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WF1973/WF1974 Instruction Manual

1. REF OUT REF OUT Use REF OUT to unify the frequency and phase for multiple WF1973 WF1974 units Connect the frequency reference output of the master unit when multiple units are combined in synchronous connection or the master WF1973 or WF1974 to the external 10 MHz frequency reference input of the WF 1973 or WF 1974 A SYNCHRONIZING MULTIPLE UNITS in the Application Instruction Manual NW Output Characteristics Y Check Do not connect any equipment other than the WF1973 and WF1974 not specified by NF Corporation to the frequency reference output The special signal that is output from this terminal during synchronization may make the operation of such connected equipment unstable 3 2 7 Multi 1 O MULTI I O WF1973 WF1974 OR AN eee OE O MODEL SERIAL NO NF CorPoration MADE IN JAPAN NF CorPoration MADE IN JAPAN 10MHz REF IN MULTI I O MULTI I O MULTI I O can be used for sweep control and sequence control It outputs the step synchronization code for the sequence KO MULTIFUNCTION GENERATOR 3 2 I O Terminals E Control input for sweep oscillation mode The following types of control for sweep oscillation can be done with 3 bit logic input Sp 94 Start Start the sweep from the start through fall input ORed with external trigger input Stop
2. 54 4 4 12 Setting the load mpedance 55 4 4 13 Adding external egonal 57 4 4 14 Setting the square wa vedutv 59 4 4 15 Setting the pulse width and leading trailing edge time of a pulse wave 61 4 4 16 Setting the ramp wave symmetry sonnennennennennennenerrnrrnererrrrrrererrrernne 64 4 5 Using Parameter Variable Wavetorms 65 4 6 Using Arbitrary Waveforms c cccccscccsecceeecececeeececeteeeteeeteeeeeeenseetseetseeeeenaes 67 4 7 Modulation Setting and Manpulatnon 69 Aft Modulation Ty e 69 4 7 2 Screen for modulation setting and manipulation a neaneannnannnnnnennennnn 70 4 7 3 Common modulation settings and manipulations 0aneannannnennennnaenennn 72 AT Ae OSNO AE 75 ATO SENO EE 76 4T O Seting A 77 A A 78 ARS SEUA AV aries 79 4 7 9 Setting AM DSR SCH 80 4 7 10 Setting DC offset modulation a naannnannannennnennennnnnnnnnnnnnnnrnnrnnnrnrrnennnne 81 AAT due H GA 82 4 8 Sweep Setting and Manipulation anneneonnennennonnennsnnsrrerrnrrsresrrerrerrsrrerrsrrrrrne 83 4 8 1 Gweenpntvpes 83 4 8 2 Screen for sweep setting and Manipulation ooccccccccnccconncconnccnninonnss 83 KIM MULTIFUNCTION GENERATOR 4 8 3 Common sweep settings and manpulatons 86 4 8 4 Setting frequency SwWeen 95 4 8 5 Setting phase ween 97 4 8 6 Setting amplitude oween 99 4 8 7 Setting DC offset oween 101 4 8 8 Setting duty SWEEP cccesssscsssccssscssscuscusscnssccusensecn
3. COL RER SOF Ve fe 0 e firra Oo Oo O Oo CH 9 OEF St N O vr LL CA we O k LL RACK MOUNTING DIMENSIONS E Millimeter rack mounting dimensions for 2 units OSE oT S ZOE 1G Ge MOr Luet y Bua 2 yeyoesg Bunosuuog ER Elle Buyoauuog N E TEZ 000000000000000000 o j 000000000000000000 8 UONCJBPISUOD ojul Uaye aq ISNW sjey9eJq Bunosuuos y jo sseuyxoluy 9y Sales yym pun ayy Bununou USA yun urew ay DIOU 0 198 1 ay Ul SAAJSUS JO SIOADEIQ BSN O SINS ag sJajdepe JUNOW OR ayy yum juO y DIOU JOU Op 498 ay ul yun y junou O uonnes 10 2 6gd9 Isun Aeb 1yB1 e11n ul payuled Jajdepe junow Joey JUSLUJe9J soeuns Bursnoy jo apis woyoq 7 suoisu wip jemelq HuloeuUu0D 9 OEP D O E st X m Z L O Z O E O Z D D E BT NIC ee IV 19 A AC DC limitation oo cece eee 49 50 51 accessorles Check oocccnncnnccnncononoccnccnnncnnnonons 4 active channel ooocccnccncnccnnccnncononcconononocnnanos 38 adding external signal ooconnnnnnnnccinccincnns 57 amplitude range occocccnccnnccnocnncconccanonos 52 54 amplitude setting occocccncccncccncnnocnnccnnccancnns 48 ANETO E erae alicia 48 APPLICA O MEN I arbitrary waveforms USE ocooccccccnnccnccnncconionos 67 AUTO UNS morte isis 106 mar
4. 001000n00aaaaana 20 Table 3 1 Signals Selectable for GvpnclSub Output 13 Table 3 2 Multi 1 O Connector Function Allocation 18 MIN MULTIFUNCTION GENERATOR 1 a OVERVIEW The WF1973 and WF1974 are multifunctional generators based on direct digital synthesizers DDS The WF1973 is a 1 channel generator while the WF1974 is a two channel generator Highest frequency 30 MHz sine wave 15 MHz square wave pulse e Frequency accuracy 3 ppm 2 pHz high resolution of 0 01 uHz 10 MHz external frequency reference can be used e Maximum output voltage 20 Vp p open 10 Vp p 50 Q e Large number of standard parameter variable waveforms Sine wave square wave variable duty pulse variable pulse width duty leading edge time trailing edge time ramp wave variable symmetry CF controlled sine wave variable crest factor staircase sine wave variable number of steps Gaussian pulse variable o Sin x x variable number of zero crossings exponential rise fall variable time constant damped oscillation variable oscillation frequency damping time constant pulse surge variable rising and duration times trapezoid variable rise fall and upper base width and so on e Large capacity arbitrary waveform memory 512 K words max saving capacity 128 waveforms 4 M words e Phase and waveform remain continuous even when frequency is changed or during frequency sweep Square wave pulse with variable duty an
5. Modulation source Internal modulation waveform Internal modulation frequency ko Sync output Modulation type Typel Indicates that the 2nd page is displayed Modulation type ee Press the NEXT Key to display the 1st page D ai i Set be Zen ee eg J This is the type of modulation FM FSK PM PSK AM AM DSB SC DC offset modulation and PWM can be chosen from ep 72 Modulation width Deviation Depth HopF req This is the modulation width The name of this item differs according to the modulation type p 72 70 MULTIFUNCTION GENERATOR 4 7 Modulation Setting and Manipulation Modulation source Source Either an internal or external modulation source can be selected p 72 Internal modulation waveform ModFctn This is the internal modulation source waveform Sine square triangular rising ramp falling ramp noise and arbitrary can be chosen from ep 72 Internal modulation frequency ModFreq This is the frequency of the internal modulation source ep 72 Sync output SyncOut This is the output signal from the sync sub output terminal Waveform basic phase sync internal modulation sync and internal modulation waveform can be chosen from Sp 74 WF1973 WF 1974 7 A 4 BASIC OPERATION 4 7 3 Common modulation settings and manipulations This subsection describes the settings and manipulations that are common to all types of modulation a To set the osci
6. IS Sweep Oscillation Option Cable Color and Mode Mode Marking EJ a gt poo Bright green Red mt II on O O AS BI on ay Re AAA PA O Ion hive Ret 14 Input Sweep start Sequence start or state Yellow Red MM branch aa eae LA A ee Note 5 V 1s output for testing purposes during production to pin No 9 This pin is not designed for use by users Leave this pin unconnected as its use may cause the operation of the equipment to become unstable I O characteristics TTL level low 0 8 V or lower high 2 6 V or higher Maximum allowed input 0 5 V to 5 5 V TTL level low 0 4 V or lower high 2 7 V or higher Signal GND Same potential as housing The connection cable is an option Contact NF Corporation or an NF distributor for details 18 MULTIFUNCTION GENERATOR 3 3 Cautions on Floating Ground Connection 3 3 Cautions on Floating Ground Connection The signal ground of the BNC terminals for waveform output sync sub output and external modulation addition input is shared but since it is insulated from the housing ground potential it can be connected to equipment that have a different potential Moreover the potential has no influence even when the equipment is mounted in a rack In the WF1974 the above mentioned BNC terminals are also insulated between channels Further the signal ground of the external 10 MHz frequency reference input is also insulated from the housing Therefore noise caused by ground loo
7. ooccncccnccnncnncconononeso 87 DC offset sweep setting cc eee ee 101 duty sweep Setting ooccocccnccnccnncccnccnncnno 103 external logic control oc oonccnccinnnnncco 94 frequency sweep setting coocccncccnccncconos 95 EEN tege 86 87 gated single shot sweep ccceeeeeeeeees 89 o BEE 91 item to be swept selecting ccecce 86 manual th lora 90 MOJO nadaa 87 88 89 ONE WAY SWEEP eoccoconncnononncncnonacoccnnncncnnonons 86 oscillation stop unit ccooccccccnccnnccnncnnncnno 89 output the waveform only during sweep EXCMO eebe 89 PAUSE SWEEP oo cccecececcecsceecececseceeecsceeceees 91 phase sweep setting cooccocccnccnoccncconoconeso 97 rising falling direction oocccnncinncnnncnc 87 Sawtooth Wave sweep occocccoccnoconcccncnnncnnn 86 screen for sweep setting and Manipulation cocccccccnccnccnnnconcconcnnncnnos 83 shuttle sweep coocccccccnccncccncnnnccnacanonancnns 87 single shot SWEEP occooccccccnccnncnncccnccnninns 88 start SWeep una 91 start sweep in synchronization with a O ee 88 start value output cccoccccccnccnncnnnccncnnninns 91 start stop phase coocccncccccnncnnncnnncnnacononns 89 stop level dsc oda iii 89 StOp SW CCD iconos 91 stop value output cooccncccccnnccnnccnocininoninos 92 substitute center value to marker EE 94 substitute marker value to center VAIS rr 94 SWEEP FUNCTION cooccccccnnncncnonnnnnnnninnns 86 87 sweep marker signal oo o oconn
8. 10 MAINTENANCE Explains the operational inspection and performance test H MULTIFUNCTION GENERATOR Safety Precautions To ensure safe use be sure to observe the following warnings and cautions NF Corporation shall not be held liable for damages that arise from a failure to observe these warnings and cautions This product is a Class I product with protective conductor terminal that conforms to the JIS and IEC insulation standards O Be sure to observe the contents of this instruction manual This instruction manual contains information for the safe operation and use of this product Be sure to read this information first before using this product All the warnings in the instruction manual must be heeded to prevent hazards that may cause major accidents Be sure to ground the product This product uses a line filter and must be grounded to avoid the risk of electric shock To prevent electric shock be sure to safely implement grounding such that ground resis tance is 100 Q or lower The WF1973 WF1974 is automatically grounded when the 3 prong power plug is connected to a 3 prong power outlet with a protective grounding contact This product does not come with a 3 prong to 2 prong conversion adapter When using a separately sold 3 prong to 2 prong conversion adapter be sure to connect the green grounding wire of the adapter to the grounding terminal next to the outlet Check the power supply voltage This produc
9. 3rd page of setting screen p 92 ER MULTIFUNCTION GENERATOR 4 8 Sweep Setting and Manipulation 4 8 6 Setting amplitude sweep For the manipulation methods that are common with the sweep setting screen refer to pp 88 and 86 a Amplitude sweep example The following is an example of continuous linear shuttle sweep Shuttle sweep Stop value Sweep value Stallion ne Output signal b Selecting amplitude sweep Freq When Mode oscillation mode is set to Sweep Sweep set Type Sweep type Dhan Select Amptd in y pel and then on the 2nd page of the setting screen to press the ENTER Amptd amplitude TUTTE key c Waveforms for which amplitude sweep is not possible Amplitude sweep is not possible for DC d Setting items required for amplitude sweep Set the following items on the 2nd page of the setting screen The amplitude settings on the lst page of the setting screen are disabled Start amplitude Start Stop amplitude Stop e Sweep time Time This is the transition time from the start amplitude to the stop amplitude ep 87 Sweep mode SwpModel Continuous single shot and gated single shot can be chosen from ep 87 e Sweep function SwpFctn One way shuttle can be chosen from ep 86 Setting with Center center amplitude and Span span amplitude instead of the start amplitude and stop amplitude is also possible ep 86 When the sweep mode is single shot or g
10. 5 V 50 Q Setting resolution 499 9 mV or lower 4 digits or 0 1 mV 0 5 V or higher 5 digits or 1 mV KEN MULTIFUNCTION GENERATOR 7 5 Signal Characteristics 7 4 3 7 4 4 7 4 5 Accuracy Load impedance setting Functions Setting range Waveform output Output on off control Output impedance Short circuit protection Output connector Sync sub output Output signal Reference phase sync output waveform Output voltage Output impedance Load impedance Output connector 1 of DC offset setting V 5mV 0 5 of amplitude setting Vp p open Condition Sine wave output of 10 MHz or lower 20 C to 30 C Outside 20 C to 30 C temperature range 1 mV C typ is added Setting and display of the amplitude and DC offset for the output termination voltage under the specified load condition 1 Q to 10 KQ 1 Q resolution 50 Q High Z load open On Off selectable When Off output pin open state 50 Q unbalanced Protection against short circuit to signal GND Front panel BNC receptacle Reference phase sync internal modulation sync burst sync sweep sync sequence step sync internal modulation signal sweep X drive selectable Square waveform with 50 duty that rises at zero phase position of reference phase DDS oscillation phase of waveform output Sync signals TTL level low level 0 4 V open or lower high level 2 7 V open or higher Internal modulation signal 3 V t
11. Gated single shot one way sweep Trigger Stop value Sweep value Start value Zi gt Start value Sweep time Frequency sweep example Gated single shot shuttle sweep Trigger Stop value Sweep value Start value c y AA aa a Sweep time Sweep time Frequency sweep example Y Check In the case of phase sweep the start phase setting is the oscillation start phase and the stop phase setting is the oscillation stop phase k To set trigger condition for single shot sweep and gated single shot sweep The trigger can be selected from internal trigger oscillator external signal manual trigger manipulation and remote trigger manipulation Upon receipt of a trigger the TRIG D lamp next to the MAN TRIG key lights The trigger condition is set with Trig trigger on the 2nd page of the setting screen E Trigger source setting The trigger source can be chosen from Int internal and Ext external When the trigger source is Int internal the trigger period can be set When the trigger source is Ext external the trigger polarity can be set If the trigger source is set to Ext external a TTL level trigger signal is input to the external trigger input terminal TRIG IN Sweeping can be started and stopped independently of the trigger source setting through input of a logic signal to the multi I O connector ep 94 E Usage of manual trigger and remote trigger Manual trigger
12. If the power was switched off the previous time by cutting off the power supply The output is off This is the case when the equipment is mounted along with other devices on a rack and the power supply to all the units is switched on off at the same time The operation is done on the Utility screen In the top menu Oscillator de Sequence select Utility and pDD Eqj then press the ENTER key E Memory Recall Memory a Disable Yalid On the Utility screen select Power On Output and then press the ENTER key The power on output setting window is displayed Set the output setting condition a Disable Yalid Select OK and then press the ENTER key 1 2 3 Press the MENU key to display the top menu window In this window select Utility and then press the ENTER key to display the Utility screen On the Utility screen select the Power On Output field and then press the ENTER key The power on output setting window is displayed so select the desired item and then press the ENTER key The output setting condition choice list is displayed so select the desired item and then press the ENTER key Once the desired power on output setting has been completed select OK in the lower part of the window and then press the ENTER key The power on output setting change is applied and the window closes To not apply the power on output setting change select Cancel in the
13. K If the CANCEL key is pressed instead of the ENTER key the value changed with the modify knob is discarded and the status of step 1 pre change setting is returned to Changing a value with the 0 C9 numeric keypad 1 Select the desired item with the arrow keys or the modify knob In the example on the left the Freq frequency field is selected Item selection or 2 Press a key of the numeric keypad The input field under the selected item opens and the numeric value is input In the example on the left 2 is input During numeric input the left arrow key serves as the delete key and the right arrow key as the zero input key Numeric input OOO OOO Q OQO 3 Press the ENTER key or the unit key soft key to set the input value and reflect it to the output The input field closes If the ENTER key is pressed the setting is performed in a unit without the k or m prefix tf J L r OO a O x the CANCEL key is pressed instead of the ENTER y key the input value is discarded and the setting remains unchanged During numeric input the left arrow key serves as the delete key and the right arrow key as the zero input key WF1973 WF 1974 4 BASIC OPERATION Y Check If a setting item is displayed on a soft key the input field for that item can be opened by pressing that soft key EN MULTIFUNCTION GENERATOR Continuous 1 000 000 000 OVWHz
14. Trigger Oscillation is executed upon reception of a trigger if the internal gate signal is on The trigger can be selected from internal trigger oscillator external signal manual trigger manipulation and remote trigger manipulation h To output the burst sync signal Sync output setting This setting is done with SyncOut sync output on the 2nd page of the setting screen One of the following two settings can be selected Signal synchronized with the reference phase of the waveform Sync Signal synchronized with burst oscillation BrstSyncl E When Sync is selected A TTL level signal that rises at the reference phase of the waveform is output from the sync sub output terminal E When BrstSync is selected A TTL level signal synchronized with the gate oscillation is output from the sync sub output terminal As shown in the following figure this signal is low during oscillation and high during oscillation stop Note that this differs from the gate signal When the signal during burst is observed with an oscilloscope it can be used as the trigger 120 MULTIFUNCTION GENERATOR 4 9 Burst Setting and Manipulation signal for the oscilloscope Trigger signal Internal gate signal Gate on Gate off Gate on Gate off Burst sync signal Oscillation Stop Oscillation Stop Output signal i To execute oscillation in half cycle units Set oscillation stop unit to half cycle To stop oscillation in half c
15. 0 100 Vp p H k The waveform is 0 000 Y selected 0 000 deg The current waveform is displayed Phase Continuous 1 000 000 000 OF 0 100 Vp p it 0 000 Y 0 000 deg opens Phase Continuous 0 000 deg selected Phase Continuous 1 000 000 000 00 H 0 100 Vp p HE Wes _ The setting is 0 000 Y changed and the 0 000 deg 50 00 choice list closes 1 2 3 4 4 3 Basic Settings and Operations 4 3 2 Changing the waveform and oscillation mode Select the desired item with the arrow keys or the modify knob In the example on the left the Fctn waveform field is selected Item selection Press the ENTER key to open the list of choices Scroll the choice list with the up down arrow keys or the modify knob In this state the desired item can also be selected by inputting a number from the numeric keypad Item selection gt Q Press the ENTER key to set the selected item and reflect it to the output The list of choices closes If the CANCEL key is pressed instead of the ENTER key the setting remains unchanged and the status of step 1 is returned to WF1973 WF 1974 ES 4 BASIC OPERATION 4 3 3 Manipulating shortcut keys for changing basic parameters The choice list or input field for waveform frequency amplitude and DC offset can be immediately opened with the corresponding basic parameter shortcut key E Waveform p 44 The w
16. 2 to 100 Multi cycle Waveform obtained by continuing sine for several cycles sine AN Number of cycles 0 01 to 50 00 gt Start phase 360 00 to 360 009 WF1973 WF1974 EX 7 SPECIFICATIONS b Transient sine group Waveform Waveform Description and Variable Parameters Name Example On phase controlled sine controlled sine Chattering on sine Chattering off sine Gaussian pulse Lorentz pulse Haversine Half sine pulse Trapezoid pulse Sin x x Sine wave with slope into on state Complete on phase 0 00 to 360 00 On slope time 0 00 to 50 00 of basic period Sine wave with slope into off state Off phase 0 00 to 360 00 Off slope time 0 00 to 50 00 of basic period Sine wave with chattering into on state On phase 0 00 to 360 009 Number of chatterings 0 to 3 On state time 0 00 to 20 00 of basic period Off state time 0 00 to 20 00 of basic period Sine wave with chattering into off state Off phase 0 00 to 360 00 Number of chattering 0 to 3 On state time 0 00 to 20 00 of basic period Off state time 0 00 to 20 00 of basic period Gaussian distribution waveform Standard deviation 0 01 to 100 00 of basic period Lorentz waveform Half value of width 0 01 to 100 00 of basic period Sin pulse Width 0 01 to 100 00 of basic period Half sine cycle pulse
17. N CAUTION _ If a difference in potential exists between the grounds of the BNC connectors do not short circuit these BNC connector grounds as this may damage the equipment 3 2 1 Waveform output FCTN OUT WF1973 WF1974 WAVE FACTOR 30MHz MULTIFUN CTION GENERAT OR WF1973 9000 0000 Cal 0006 FCTN OUT CH1 Insulated from housing FCTN OUT FCTN OUT Insulated from housing Insulated from housing This is the main output NW Output characteristics Output voltage Maximum 10 V open Output impedance 50 Q Load impedance 0 Q or higher short circuit protection provided Signal GND Insulation from the housing 42 Vpk max WF1974 Insulation also between channels 42 Vpk max MULTIFUNCTION GENERATOR 3 2 I O Terminals 3 2 2 Sync sub output SYNC SUB OUT WF1973 WF 1974 WAVE FACTORY 30MHz MULTIFUNCTION GENERATOR WF1973 LTIFUNCTION GENERATOR WF1974 8 E 0006 0006 0000 gt 0000 o 00000 T SYN ma UT MOD ADD IN TRIG IN SYNC SUB CH1 CH2 OUT SYNC SUB SYNC SUB Insulated from housing OUT OUT Insulated from Insulated from housing housing A sync signal is output according to the waveform or oscillation status This signal can be used as the oscilloscope synchronization signal As shown in the following table the output signal can be selected according to the oscillation mode Table 3 1 Signals S
18. PANELS AND I O TERMINALS NW Cautions on Floating Ground Connection for WF1973 FCTN OUT SYNC SUB OUT MOD ADD IN RK y Use with potential Use with potential difference of 42 Vpk difference of 42 Vpk 7 K or less l SKS FA Housing ground 10 MHz REF IN S A Use with potential MO difference of 42 Vpk or less A Housing ground Figure 3 6 Cautions on Floating Ground Connection for WF1973 NW Cautions on Floating Ground Connection for WF1974 SYNC SUB OUT MOD ADD IN x Use with potential difference of 42 Vpk or less Use with potential A difference of 42 Vpk or less a Use with potential 4 mo difference of Housing ground y 42Vpk Use with potential mars Use with potential difference of 42 Vpk difference of 42 Vpk Housing ground or less sv o orless d y 10 MHz REF IN I Use with potential 14 yo difference of 42 Vpk or less Housing ground Figure 3 7 Cautions on Floating Ground Connection for WF1974 MULTIFUNCTION GENERATOR 4 BASIC OPERATION 4 1 Power on off Switching and Restoration of Settings 4 1 1 Power on off switching method L mu lao Press the power switch MW Power on procedure The startup screen is displayed Power off state The power is switched on standby state Once the power is switched on a self check test is automatically executed and the unit be
19. and then press the EE the top menu and 7 PER press the ENTER ENTER key to display the Utility key screen e Memory Recall Memory b Utility screen configuration External 10 MHz frequency Setting initialization es reference enable disable External addition setting N External 10 MHz frequency Power on output setting Ae reference input status display RE SE Phase synchronization isplay setting Remote setting Operation sound setin gt Veit direction setting Internal information display gt aaa Self check Channel mode setting gt gt Inter chen WF1974 only parameter copy 2 channel same value setting On Off WF1974 only WF1974 only Setting initialization Reset Initializes the settings The initial settings are continuous oscillation sine wave 1 kHz 0 1 Vp p open and output off p 41 External 10 MHz frequency reference enable disable Ext Reference Enables disables the external 10 MHz frequency reference 5 USING EXTERNAL FREQUENCY REFERENCE in the Application Instruction Manual External addition setting Ext Add Sets external addition gain The setting can be selected from off x2 and x10 ep 57 External 10 MHz frequency reference input status display 10 MHz Ref In Displays whether a valid signal for external 10 MHz frequency reference input is available 5 USING EXTERNAL FREQUENCY REFERENCE in the Application Instruction Manual Power on output sett
20. c Trigger burst setting screen MW 1st page Screen for the basic parameters These are the common setting items that are common to all the oscillation modes Indicates that the 1st page DA the 2nd page Ve es AE eet Ge 4 Set the oscillation Sine is displayed mode to Burst 1 000 000 000 00 Hz 0 100 Vp p ate igh z 0 000 Y Press the NEXT Oscillation start stop 0 000 des key to display phase setting Oscillation start stop phase Phasel This is the phase at which oscillation starts and stops NW 2nd page Screen for the trigger burst settings Indicates that the 2nd page is displayed Trig Wait Burst Set burst mode to Mark wave number Trigger Trigger delay Stop level eo oS l Press the NEXT key to display Sync output 4 the 1st page i BrstMode Mark TrigDly StpLwl SyncOut JONA Mark wave number Mark This is the wave number for oscillation each time a trigger is received It can be set in 0 5 cycle units Stop level StpLvl This is the signal level during oscillation stop The level can be set to elther off or on Normally it is set to off p 112 Trigger Trig This 1s the trigger condition Internal and external can be chosen as the trigger source ep 111 Trigger delay TrigDly This is the trigger delay time Upon receipt of a trigger oscillation starts following the lapse of the specified time ep 111 Sync out
21. external modulation addition input terminal In the case of 1 V input the prescribed peak frequency deviation results WF1973 WF 1974 KO 4 BASIC OPERATION 4 7 5 Setting FSK This 1s binary frequency shift modulation by which the output frequency switches between the carrier frequency and hop frequency according to the modulation signal For the manipulation methods that are common with the modulation setting screen refer to pp 70 and 72 a FSK example The frequency changes suddenly but the phase continuity of the output signal is maintained Modulation sync signal during internal modulation Modulation signal during external modulation positive polarity Hop Carrier Hop frequency frequency frequency EENEG AS Aa Output signal b Selecting FSK When Mode oscillation mode is set to ERR al Modulation modulation set Type W STR Dy Select FSK in modulation type on the 2nd page of the pd Type and then setting screen to FSK FSK press the ENTER key c Waveforms for which FSK is not possible FSK is not possible for noise pulse wave and DC d Setting items required for FSK Set Freq carrier frequency on the 1st page of the setting screen Set HopFrea hop frequency on the 2nd page of the setting screen The output frequency alternates between the carrier frequency and the hop frequency If Source modulation source is Int internal set ModFreq
22. sequence control sync code output ep 16 Frequency reference output terminal ep 16 External 10 MHz frequency reference input terminal ep 15 CH2 external modulation addition input terminal p 14 CH1 external modulation addition input terminal p 14 Figure 3 4 Rear Panel of WF1974 WF1973 WF 1974 KIM 3 PANELS AND I O TERMINALS 3 2 I O Terminals To prevent electric shocks do not apply a voltage exceeding 42 Vpk DC AC peak between the ground of the BNC connectors insulated from the housing and the housing Also do not apply a voltage exceeding 42 Vpk DC AC peak between the grounds of the BNC connector groups insulated from the housing BNC connector group as used here refers to multiple BNC connectors that are connected to a common ground If such a voltage were to be applied the internal voltage limiting elements will try to curb the working voltage but if the voltage is too large equipment burnout may result ep 19 A CAUTION Do not apply a voltage from external to the output terminal as this may damage the equipment N CAUTION Do not apply a voltage exceeding the maximum input level to the input terminal as this may damage the equipment N CAUTION H there is a difference in potential between the ground of a BNC connector insulated from the housing and the housing do not short circuit the hot side of that BNC connector and the housing as this may damage the equipment
23. 0000 to 49 9900 0 0001 resolution WF1973 WF1974 E 37 7 SPECIFICATIONS Extended variable duty range 0 0000 to 50 0000 0 0001 resolution Pulse wave 0 0000 to 49 9000 0 0001 resolution 7 7 Sweep Oscillation Mode 7 7 1 General Sweep types Frequency phase amplitude DC offset duty Sweep functions One way ramp waveform shape shuttle triangular waveform shape selectable Linear log frequency sweep only selectable Sweep range setting Start value and stop value specification Center value and span value specification Sweep time setting range 0 1 ms to 10 000s 4 digits or 0 1 ms resolution Sweep mode Continuous single shot gated single shot selectable During gated single shot oscillation occurs only during sweep execution Operation Start stop hold resume start value output stop value output Trigger source used for single shot sweep and gated single shot sweep Internal external selectable Trigger delay setting is invalid Manual trigger possible Internal trigger oscillator for sweep used for single shot sweep and gated single shot sweep Period setting range 100 0 us to 10 000 s 5 digits or 0 1 us resolution Stop level setting used for gated single shot sweep Function Specification of signal level while oscillation is stopped during gated single shot sweep Setting range 100 00 to 100 00 of amplitude full scale 0 01 resolution or off Oscillation stop unit during g
24. 20 V Since external addition is done at the last stage of waveform output p 2 the addition gain is closely related to the output voltage range When the maximum output voltage of the range is 20 V and 4 V the addition gain is fixed to X10 and X2 respectively Other addition gain values cannot be selected ep 54 Conversely when external addition is used the maximum output voltage of the range is fixed according to the addition gain It should be noted in particular that when the addition gain is X10 the maximum output voltage is fixed to 20 V so that the amplitude accuracy and waveform quality may decline when the amplitude is made smaller EN MULTIFUNCTION GENERATOR 4 4 Setting Methods for Main Items 4 4 14 Setting the square wave duty The waveform is assumed to be set to Square For the waveform setting method ep 44 The duty setting unit is only Setting and display using time is not possible a Duty setting method 1 Select the Duty field and then press the Continuous Square P ENTER key to open the duty input 1 000 000 000 00 Hz field 0 100 Vp p mua mz Even if there are several setting screens 0 000 Y the Duty field is always displayed on the 0 000 deg first page Of f en ann n Y FOCA Y LAA Duty input field 2 Select the digit to be changed with the D gt left right arrow keys and increment decrement the value with the up down arrow keys or the modify knob The change is instant
25. Cancel Continuous Sine 1 000 000 000 00 Hz Output Load Variable 6000 Select OK and then press the ENTER key High Z variable b Conversion formula w Conversion is done with the following formula Load impedance setting value Roag Q Load open output voltage Vopen 1 Select the load impedance icon on the right of the range icon and then press the ENTER key 2 The load impedance setting window opens so press the ENTER key again The load impedance condition choice list opens Select the desired load impedance and then press the ENTER key When Variable is selected the load impedance value can be set 3 Once the load impedance setting has been completed select OK in the lower part of the window and then press the ENTER key to apply the load impedance setting change and close the window To not change the load impedance setting select Cancel in the lower part of the window and then press the ENTER key or press the CANCEL key Output voltage setting value load end voltage Vigag y 8 Riva load 50 Rioad y open WF1973 WF1974 ECH 4 BASIC OPERATION Y Check The output impedance is constant at 50 Q The output impedance error and output voltage error are not corrected The output voltage accuracy specification is the load open value EN MULTIFUNCTION GENERATOR 4 4 Setting Methods for Main Items 4 4 13 Adding external signal An external signal can be added
26. DC d Setting items required for AM Set Amptd carrier amplitude on the 1st page of the setting screen Set Depth modulation depth on the 2nd page of the setting screen The output amplitude varies in the range of carrier amplitude setting value Vp p 2x 1 modulation depth 100 When the modulation depth is 0 or the modulation is stopped the output amplitude is 1 2 of that during continuous oscillation When the modulation depth is 100 the maximum output amplitude envelope value is equal to the carrier amplitude setting value If Source modulation source is set to Int internal set ModFctn modulation waveform and ModFreq modulation frequency If Source modulation source is set to Ext external input the modulation signal to the external modulation addition input terminal In the case of 1 V input the prescribed modulation depth results WF1973 WF 1974 79 4 BASIC OPERATION 4 7 9 Setting AM DSB SC The output amplitude varies according to the instantaneous value of the modulation signal This is AM without the carrier frequency component DSB SC stands for Double Side Band Suppressed Carrier For the manipulation methods that are common with the modulation setting screen refer to pp 70 and 72 a AM DSB SC example When the absolute value of the modulation signal amplitude is large the amplitude of the output signal is also large When the value of the modulat
27. Graph tabis Ex 0 000 selected Ki 0 000 deg 3 Con tinuous 2 000 000 00 Hz 0 100 p p A 0 000 The Graph tab 0 000 deg screen is displayed Sei E Y Check In the example on the left the Text tab screen is displayed On this screen the settings are displayed in text form Select the Graph tab with the arrow keys or the modify knob Tab selection The Graph tab screen display is switched to by pressing the ENTER key The settings can be done while checking the image of the output waveform on this screen In the WF1974 display can be switched between 1 channel display and 2 channel simultaneous display EN MULTIFUNCTION GENERATOR 4 2 Screen Configuration and Operation 4 2 3 Top menu Sequence oscillation arbitrary waveform editing system settings saving and recalling settings and other actions are done by selecting the desired item from the top menu a Displaying the top menu Press the menu key to display the following top menu window The top menu window opens Oscillator Sequence ARB Edit Utility Store Memory Recall Memory Select the desired menu item using the up down arrow keys or the modify knob and then press the ENTER key to display the menu item setting screen With the top menu window open the desired menu item can also be specified by inputting a number using the 0 C9 numeric keypad b Actions possible using the t
28. Safety EN61010 1 2001 EMC EN61326 1997 A1 1998 A2 2001 A3 2003 KE MULTIFUNCTION GENERATOR 7 17 General Characteristics WE External dimensions WF1973 QUO Jounpol z 1 9 g49 J esun 1 auo sayjea Aeb 1yBI7 susAOD Z 0 9Z4adS 8 IJesun A aued Jeay LL OI 6gdg9 asung Aesp DI Sun 9ySe d eued zuo ju3u1 e9a 1 SOBLINS OSE cer ZEE Met OPIS joued Jeay BOS noz CT GAL VIZ aq 100434 NI 438 ZHWOL y Head NI 20 U0 840ds09 4N ON qY 183S J730OW XWN YAOS 7HO9 2HOS AOEZ AOOL ANI I OLc joued uo14 St N O vr LL CA we O k LL 7 SPECIFICATIONS E External dimensions WF1974 QUO Jounpol z 1 9 g49 J esun 1 auo sayjea Aeb 1yBI7 susAOD Z 0 9Z4adS 8 IJesun A aued Jeay LL OI 6gdg9 asung Aesp DI Sun 9ySe d eued zuo ju3u1 e9a 1 SOBLINS OSE cer ZEE Met PIS joued Jeay XVN VAS ZH0O97 ZHOS A0EZ A00L ANI I vos noz CT oiuz CC BIOLUIZ CT UNOLUIZ NIE 10AZV AF KEN Als NVdvf NI SOWA U0 840dd09 4N ON IVIY3S TS0OWN OLc joued uo14 D O E st X m Z L O Z O E O Z D D E RACK MOUNTING DIMENSIONS W Inch rack mounting dimensions for 1 unit COSE 000000000000000000 C
29. SyncOut This is the output signal from the sync sub output terminal Waveform reference phase synchronization and burst synchronization can be chosen from ep 111 d Waveforms for which trigger burst is not possible Trigger burst is not possible for noise and DC e Setting items required for trigger burst On the 1st page of the setting screen set Phase oscillation start stop phase On the 2nd page of the setting screen set Mark mark wave number Normally the wave KO MULTIFUNCTION GENERATOR 4 9 Burst Setting and Manipulation number is set to an integer value StpLvl stop level on the 2nd page of the setting screen is normally set to Off off ep 112 A trigger is required for trigger burst Refer to the following item f Trigger settings for trigger burst The trigger can be selected from internal trigger oscillator external signal manual trigger key manipulation and remote trigger manipulation Upon receipt of a trigger the TRIG D lamp next to the MAN TRIG key lights The trigger source is set with Trig trigger on the 2nd page of the setting screen E Trigger source setting The trigger source can be chosen from Int internal and Ext external When the trigger source is Int internal the trigger period can be set When the trigger source is Ext external the trigger polarity can be set If the trigger source is set to Ext external a TTL level trigger signal is input to the ex
30. TTL level logic input to the multi I O connector on the rear panel can be done This applies in common to CH1 and CH2 To prevent malfunction due to external noise it is recommended to set Disable disable when not using control with an external signal For the pin number allocation p 18 The following manipulations can be done E Sweep start If sweep operation is currently stopped the sweep operation starts from the beginning upon input of a falling edge During sweep execution the sweep operation is resumed from the beginning upon input of a falling edge During single shot sweep and gated single shot sweep the sweep operation starts from the beginning if a trigger other than this signal is received ORing with the set trigger source is done E Sweep stop The sweep operation stops upon input of a falling edge during sweep execution and the state becomes the sweep start value output state However during single sweep and gated single sweep the sweep operation starts again from the beginning upon receipt of a new trigger WE Sweep hold resume The sweep operation 1s held upon input of a falling edge during sweep execution The sweep operation resumes from where it was held upon input of a rising edge during hold However during single shot sweep and gated single shot sweep the sweep operation starts again from the beginning upon receipt of a new trigger during hold ER MULTIFUNCTION GENERATOR 4 8 Sweep Set
31. also be set ModFctn internal modulation waveform can be selected from the following seven choices e Sine Sine Falling ramp DnRamp e Square 50 duty Square e Noise Noise Triangle 50 symmetry Triangle Arbitrary ARB Rising ramp UpRamp OH MULTIFUNCTION GENERATOR 4 7 Modulation Setting and Manipulation The internal modulation frequency cannot be set if the internal modulation waveform is noise If the modulation type is FSK or PSK the internal modulation waveform is fixed to a 50 duty square wave and the internal modulation waveform cannot be selected When an arbitrary waveform is selected for the internal modulation waveform waveform data simply decimated to 4096 points from the start is used as the modulation waveform in case of the array format When RAW is shown in the Type field in the arbitrary waveform selection screen the arbitrary waveform is in the array format If the value in the Sizel field is 17 KB or more the original waveform size is larger than 4096 points On the other hand when Point is shown in the Type field the arbitrary waveform is in the control point format The arbitrary waveform in this format the waveform is developed using 4096 points to maintain the waveform characteristics as much as possible For details on the arbitrary waveforms 2 CREATING ARBITRARY WAVEFORMS in the Application Instruction Manual f To perform modulation with an external signal
32. field is not open press the FREQ shortcut key twice to open the period input field When either the frequency or period input field is open the frequency display and period display are toggled each time the FREQ key is pressed Once the period input field is opened the Continuous setting procedure is the same as for the 1 000 000_s frequency When a value is input with the numeric E NJ o keypad the unit key for period setting is tes th ee displayed as a soft key When period display is changed to the display changes as follows Item name Freq Period Unit display Hz eet Soft key Period Freq 4 4 6 Setting the phase a Setting method 1 Select the Phase field and then press the Continuous Sine ES ENTER key to open the phase input 1 000 000 000 00 Hz field 0 100 Vp p mua mz Even if there are several setting screens the Phase field is always displayed on A NNN dea the first page lt 8 000 de x Phase input field 2 Select the digit to be changed with the GD left right arrow keys and increment decrement the value with the U up down arrow keys or the modify knob The change is instantly reflected to the output Alternatively enter a numeric value using the O C9 numeric keypad Then press the ENTER key or the deg unit key soft key to set the input value and reflect it to the output If the ENTER key is used the unit is also set to deg WF1973 WF 1974 5 4 BASIC OPERATION b I
33. impedance follow the external trigger input specifications Standard waveform other than noise pulse wave and DC and arbitrary waveform 0 01 uHz to 30 MHz 0 01 uHz resolution Standard waveform other than noise and DC and arbitrary waveform 1800 000 to 1800 000 0 001 resolution Standard waveform other than DC and arbitrary waveform O Vp p to 20 Vp p open Standard waveform and arbitrary waveform 10 V to 10 V open Square wave pulse wave 0 0100 to 99 9900 0 0001 resolution 0 0000 to 100 0000 0 0001 resolution 0 0170 to 99 9830 0 0001 resolution 7 8 Burst Oscillation Mode Burst mode Auto burst Trigger burst Gate Triggered gate Target waveforms Auto trigger burst Gate triggered gate Repeats oscillation of mark wave number and oscillation stop of space wave number Trigger invalid Performs oscillation of mark wave number in sync with trigger Performs oscillations in cycles of integers or integer multiples of half cycles in sync with the gate signal However if the waveform is noise oscillation on off operation is done through the gate signal Gate oscillation switched on off by gate upon trigger Standard waveform other than noise and DC and arbitrary waveform Standard waveform other than DC and arbitrary waveform WF1973 WF 1974 E EN 7 SPECIFICATIONS Setting range of mark wave number 0 5 cycles to 999 999 5 cycles in 0 5 cycle units Setting r
34. instead of the start frequency and stop frequency is also possible ep 86 When the sweep mode is single shot or gated single shot Trig trigger condition must be set 7 p 90 WF1973 WF 1974 EN 4 BASIC OPERATION Set the following items as needed e Marker frequency Marker 2nd page of setting screen p 92 e Stop level StpLvl 3rd page of setting screen e p 89 This setting can be used only for gated single shot sweep External control with multi I O connector ExtCtrl 8rd page of setting screen p 94 e Oscillation stop unit for gated single shot sweep OscStop 3rd page of setting screen p 89 This setting can be used only for gated single shot sweep e Sync output SyncOut 3rd page of setting screen p 92 EN MULTIFUNCTION GENERATOR 4 8 Sweep Setting and Manipulation 4 8 5 Setting phase sweep For the manipulation methods that are common with the sweep setting screen refer to pp 88 and 86 a Phase sweep example The following is an example of continuous linear shuttle sweep Shuttle sweep Stop value Sweep value Siaitvallig ie eee Output signal As the phase increases the frequency rises by the value below and as the phase decreases the frequency drops by the value below Stop phase deg Start phase deg 1 360 Sweep time s b Selecting phase sweep When Mode oscillation mode is set to Sweep Sweep set Type Sweep type on the 2
35. key Select Memory No in the top left of the screen and 2 In the Recall Memory screen select the then press the ENTER key to open the field for inputting Memory No field in the top left part of the the number of the setting memory to be recalled screen and then press the ENTER Recall a An outline of the key to open the field for inputting the setting in the number of the setting memory to be specified setting r lled memory number SE Ee Sine is displayed A Dien 3 Increment decrement the setting memory 0 000 0 Y number with the up down arrow keys or the modify knob The specified setting memory number and setting name are displayed in highlight in the left part of the screen An outline of the setting saved to the setting memory of the specified number is displayed in the right part of the screen The specified setting memory number and the setting name are displayed in highlight Recall Memory Press the Recall 4 Select the number of the setting memory soft key to open to be recalled and then press the the dialog box for ENTER k t th tti eae cho de ey o close the setting memory Ready recall operation number input field 5 Press the Recall soft key to open the Select OK and dialog box for checking the recall then press the ti ENTER key to RES execute recall To execute recall select OK and then press the ENTER key Recall is executed and the current setting contents are replac
36. lower part of the window and then press the ENTER key or press the CANCEL key 42 MULTIFUNCTION GENERATOR 4 4 Setting Methods for Main Items 4 4 Setting Methods for Main Items This section describes the setting methods for the main items mainly done on the Oscillator setting screen Oscillator is displayed at the top left of the Oscillator setting screen When another screen is displayed pressing the MENU key displays the top menu so select Oscillator and then press the ENTER key The following explanation uses the text display screen 1 channel display in the continuous oscillation mode The setting screen consists of one page only Configuration of text display screen in continuous oscillation mode This screen is where the basic settings for the output waveform are done Waveform oe a Oscillation mode in Squa Polarity and amplitude Frequency _ a range of waveform q depending on the Amplitude waveform additional DC offset selection buttons may Phase ___ be displayed Waveform specific parameters Mode Phase Duty 1 Select the Mode field and then press the ENTER key to display the oscillation mode choice list Even if there are several setting screens the Mode field is displayed at the top left of each page Oscillation mode choice list 2 Select the desired oscillation mode from the choice list and then press the ENTER key to apply the setting and reflect it t
37. manual trigger manipulation and remote trigger manipulation as the trigger set the trigger source to Ext external Also to prevent malfunction due to external noise at this time it is recommended to set the polarity to Off g To start gate oscillation Trigger gate signal Oscillation is executed upon reception of gate signal on The trigger can be selected from internal trigger oscillator external signal manual trigger manipulation and remote trigger manipulation h To output the burst sync signal Sync output setting This setting is done with SyncOut sync output on the 2nd page of the setting screen One of the following two settings can be selected e Signal synchronized with the reference phase of the waveform Sync e Signal synchronized with burst oscillation BrstSync WE When Sync is selected A TTL level signal that rises at the reference phase of the waveform 1s output from the sync sub output terminal WF1973 WF1974 KO 4 BASIC OPERATION E When BrstSync is selected A TTL level signal synchronized with the gate oscillation is output from the sync sub output terminal As shown in the following figure this signal is low during oscillation and high during oscillation stop Note that this differs from the gate signal When the signal during burst is observed with an oscilloscope it can be used as the trigger signal for the oscilloscope Gate signal Gate on Gate off Gate on Gate off
38. modify KOOD ME 30 steel DAC D e ME 69 AM DSB SC setting ccccconoocccncccnnonannnnss 80 A A 79 carrier condition setting esce 12 common modulation settings and manipulations ooccocccnccnncnnocnnccnnccninonos 12 DC offset modulation setting 81 PINE SCL d stas abla 75 FSK setting 92 76 modulation sync signal modulation waveform signal oooo connccccnnccnnccnncnnos 74 modulation type selecting c cc 12 modulation types occcocccnccnccnnoconoconcnancnnss 69 modulation waveform signal 74 modulation width setting eccess 72 modulation with an external signal SOUTO asias 73 modulation with arbitrary waveform 73 modulation with the internal signal BOUT CC riada 12 Ud ES EE TT EEN sein oleo 78 PWM Setting occooccncccncccnccnnconccnnccnaconaconess 82 screen for modulation setting and manipulation cocccncccnccnccnnncnncconcnnncnno 70 start modulation ooccoccncncnnnonnnocnnononnnoso 73 stop modulation ooccooccncccncnnnccncconccnninns 73 LTD ri 12 MUTTLLO susana ctas 16 N MERTE oeae EE EE 26 normal waveform polarity c cccceceeeeee 52 numeric INPUE cococccncnnccnnccnncnnccnncnnnccnacanaconinns 31 numeric keypad occocccncccncnnccnncnnncnnacinacininns 31 O OTE ME 50 operating principles oooccocccnccnccnnccnncnnncnnoso 2 OPUS Zeen 5 oscillation mode setting ccocccncccccnncnnncnnicnno 43 JULE ui 41 OUtpUt ON OLf ocooccncccnccnncnnccn
39. off A LINE Power supply connected Setting change procedure 1 Power on state The settings are set to the contents of setting memory 1 LINE 8 e LINE Power supply disconnected Power supply reconnected 7 S o Z omn ene ad ed CW REH The power is switched off yy E SON re 333 QA S The power is switched on The settings are set to the contents of setting memory 1 The settings before the power is switched off cannot be restored The contents of setting memory number 1 are set ep 122 The output on off settings at power on can be set on the Utility screen ep 41 Y Check Since the settings before the power supply is cut off are not restored specify the contents of setting memory number 1 beforehand if required ep 122 EN MULTIFUNCTION GENERATOR 4 2 Screen Configuration and Operation 4 2 Screen Configuration and Operation 4 2 1 Screen configuration The screen consists of three areas as shown in the following figure Oscillator Status display area Sine 1 000 000 000 00 Hz 0 100 p p me m Setting area 0000 Y 0 000 deg Display format switching tabs Mode Phase _ Soft key display area NW Status display area Displays the status of the equipment The following items are displayed Uncalibrated status Displayed when the calibration information of the equipment is lost due to a problem and the prescribed pe
40. rear panels for this purpose To allow for ample air flow be sure to maintain a gap of at least 10 cm between the sides and rear of this product and walls or other obstructions e Install this product in a location that meets the following conditions for temperature and humidity ranges Operating conditions 0 to 40 C 5 to 85 RH Storage conditions 10 to 50 C 5 to 95 RH Further a condensation free environment must be ensured For limitations related to absolute humidity refer to the specifications in this manual e Do not install the WF1973 WF1974 in the following locations e Location with flammable gas An explosion may occur Never install and use this product in such a location Outdoors or location exposed to direct sunlight or near a fire or heat source The full performance of this product may not be obtained or failure may occur Location with corrosive gas moisture dust or high humidity This product may become corroded or fail Location near an electromagnetic field source high voltage device or power line This product may malfunction Location exposed to excessive vibration This product may malfunction or fail WF1973 WF 1974 5 2 PREPARATIONS BEFORE USE c Panel and case cleaning Use a soft cloth to wipe dust from the panel and case If soiling is severe moisten the cloth with a neutral detergent and wring it out well Do not use volatile substances such as thinners and benzene or commercial wip
41. shuttle can be chosen from ep 86 Setting with Center center duty and Span span duty instead of the start duty and stop duty is also possible ep 86 WF1973 WF 1974 103 4 BASIC OPERATION When the sweep mode is single shot or gated single shot Trig trigger condition must be set 7 p 90 Set the following items as needed e Marker duty Marker 2nd page of setting screen e p 92 Stop level StpLvl 8rd page of setting screen e p 89 This setting can be used only for gated single shot sweep e External control with multi I O connector ExtCtrll 8rd page of setting screen 7 p 94 e Oscillation stop unit for gated single shot sweep lOscStop 3rd page of setting screen Sp 89 This setting can be used only for gated single shot sweep e Sync output SyncOut 3rd page of setting screen p 92 104 MULTIFUNCTION GENERATOR 4 9 Burst Setting and Manipulation 4 9 Burst Setting and Manipulation 4 9 1 Burst oscillation types The following four types of burst oscillation can be done e Auto burst Oscillation and stop are automatically repeated with the respectively specified wave number No trigger signal is required ep 106 Trigger burst Oscillation with the specified wave number is done each time a trigger is recelved p 109 Gate oscillation Oscillation is done in integer cycles or half cycles while the gate is on p 113 Triggered gate oscillation This is gate oscillation that sw
42. signal level is 3 V open ModFctn cannot be selected when the modulation type is FSK or PSK 4 MULTIFUNCTION GENERATOR 4 7 Modulation Setting and Manipulation 4 7 4 Setting FM The output frequency varies according to the instantaneous value of the modulation signal For the manipulation methods that are common with the modulation setting screen refer to pp 70 and 72 a FM example Frequency shifting of the output signal grows larger when the modulation signal swings to the positive side Modulation sync signal during internal modulation Modulation signal Output signal b Selecting FM When Mode oscillation mode is set to Fh EJ Modulation set Type modulation type f Yo Select FM in Ss Ge on the 2nd page of the setting screen to ypej an en 3 PM press the ENTER FM FM key c Waveforms for which FM is not possible FM is not possible for noise pulse wave and DC d Setting items required for FM Set Freq carrier frequency on the 1st page of the setting screen Set Deviation peak frequency deviation on the 2nd page of the setting screen The output frequency varies according to the range of carrier frequency peak frequency deviation If Source modulation source is set to Int internal set ModFctn modulation waveform and ModFreq modulation frequency If Source modulation source is set to Ext external input the modulation signal to the
43. source Set Source modulation source on the 2nd page of the setting screen to Ext external The external modulation signal input terminal differs as follows according to the modulation type E When the modulation type is FM PM AM AM SC OSFM or PWM Input the modulation signal to the external modulation addition input terminal The modulation width setting is the value when the signal level is 1 V If the input level is lower than 1 V keep it mind that the modulation width may become below the specified modulation width When the external modulation addition input terminal is used for external addition input the external modulation function cannot be used E When the modulation type is FSK or PSK Input the modulation signal TTL level to the external trigger input terminal The polarity can be set on the screen g To start modulation Modulation starts automatically Resume with the Start soft key When the modulated oscillation mode is set modulated oscillation starts automatically However if the modulation setting is improper modulated oscillation will not start Conflict is displayed in the top right part of the screen in this case When the soft key appearing at the left end 1s pressed a message about the inappropriate setting 1s displayed Once the setting has been changed to an appropriate setting modulated oscillation starts When modulation has been paused it can be resumed by pressing t
44. sweep Sweep we i 7 g To change the rising falling direction of the sweep Magnitude relation of start and stop values When sweeping is done with a sawtooth wave one way sweep sweeping is done from the start value to the stop value If start value lt stop value the value increases during sweep execution Reversely if start value gt stop value the value decreases during sweep execution When the Stt Stp soft key included in the second stage of the soft key set on the 2nd page of the setting screen W 2 2 is displayed on the right most soft key is pressed the start value and stop value can be swapped h To continuously repeat sweep Continuous sweep Set SwpMode sweep mode on the 2nd page of the setting screen to Cont continuous No trigger signal is required The transition time from the start value to the stop value is set with Time sweep time on the 2nd page WF1973 WF 1974 Ka 4 BASIC OPERATION Since the sweep time is the transition time from the start value to the stop value when the sweep function is shuttle the repeat period is twice the length of the sweep time setting as shown in the following figure Continuous one way sweep Stop value Sweep value Start value e g Sweep time Frequency sweep example Continuous shuttle sweep Stop value Sweep value Start value ee SAA e gt Sweep time Sweep time Frequency sweep example i To start sweep in synchroniz
45. the following figure For details on sync oscillation and 2 phase oscillation 3 3 Phase Synchronization Between Channels and 3 4 Maintaining Both Channels to Same Frequency 2 Channel Ganged Operation 2 Phase in the Application Instruction Manual CH1 waveform output CH2 waveform output lt gt CH2 phase setting CH1 phase setting WF1973 WF1974 E 7 4 BASIC OPERATION 4 4 7 Setting the amplitude a Setting method 1 Press the AMPTD shortcut key to Continuous Sine EN open the amplitude input field 1 000 000 000 00 Hz Alternatively select the Amptd field and NINN Vo p LAE then press the ENTER key to open Amplitude input the amplitude input field 0 000 deg ES Even if there are several setting screens the Amptd field is always displayed on the first page If High is displayed in the Amptd field and the high level instead of the amplitude is displayed press the AMPTD key once more to switch to the amplitude display 2 Select the digit to be changed with the D gt left right arrow keys and increment decrement the value with the OU up down arrow keys or the modify knob The change is instantly reflected to the output Alternatively enter a numeric value using the O C9 numeric keypad Then press the ENTER key or one of the unit keys soft keys to set the input value and reflect it to the output b Changing the unit
46. the sweep object Moreover when DC is selected as the waveform gated single shot sweep cannot be done d Setting items required for DC offset sweep Set the following items on the 2nd page of the setting screen The DC offset settings on the 1st page of the setting screen are invalid e Start DC offset Start Stop DC offset Stop Sweep time Time This is the transition time from start DC offset to stop DC offset ep 87 Sweep mode SwpModel Continuous single shot and gated single shot can be chosen from ep 87 e Sweep function SwpFctn One way shuttle can be chosen from ep 86 Setting with Center center DC offset and Span span DC offset instead of start DC offset and stop DC offset is also possible p 86 When the sweep mode is single shot or gated single shot Trig trigger condition must be set 7 p 90 WF1973 WF1974 101 4 BASIC OPERATION Set the following items as needed e Marker DC offset Marker 2nd page of setting screen ep 92 e Stop level StpLvl 8rd page of setting screen e p 89 This setting can be used only for gated single shot sweep e External control with multi I O connector ExtCtrl 8rd page of setting screen p 94 e Oscillation stop unit for gated single sweep lOscStop 3rd page of setting screen p 89 This setting can be used only for gated single shot sweep e Sync output SyncOut 3rd page of setting screen p 92 102 MULTIFUNCTION GENERATOR 4 8 Sweep
47. triggered gate oscillation The trigger can be selected from internal trigger oscillator external signal manual trigger key manipulation and remote trigger manipulation Upon receipt of a trigger the TRIG D lamp next to the MAN TRIG key lights The trigger source is set with Trig trigger on the 2nd page of the setting screen The trigger delay is fixed to minimum E Trigger source setting The trigger source can be chosen from Int internal and Ext external When the trigger source is Int internal the trigger period can be set When the trigger source is Ext external the trigger polarity can be set If the trigger source is set to Ext external a TTL level trigger signal is input to the external trigger input terminal TRIG IN NW Usage of manual trigger and remote trigger Manual trigger manipulation and remote trigger manipulation are always valid regardless of the trigger source setting MAN TRIG The gt MAN TRIG key can be used for manual trigger manipulation However in the case of the WF1974 the MAN TRIG key works for the channel whose display is active For details on the channel whose display is active p 38 To use only manual trigger manipulation and remote trigger manipulation as the trigger set the trigger source to Ext external Also to prevent malfunction due to external noise at this time it is recommended to set the polarity to Off g To start triggered gate oscillation
48. 1 Continuous Modulation Next set BrstMode burst mode to Auto auto on the 2nd page of the burst er select Auto in oscillation mode BrstMode and 4 TrigGate then press the ENTER key 106 MULTIFUNCTION GENERATOR 4 9 Burst Setting and Manipulation c Auto burst setting screen MW 1st page Screen for the basic parameters These are the common setting items that are common to all the oscillation modes E Indicates that the 1st page Om Set the oscillation is displayed mode to Burst 1 000 000 000 00 Hz 0 100 Yp p Ma m 0 000 Y ee D phase setting EE the 2nd page Oscillation start stop gt was did l l Oscillation start stop phase Phase This is the phase at which oscillation starts and stops NW 2nd page Screen for the auto burst settings Indicates that the 2nd page is displayed AA i Set burst mode to Mark wave number Auto Space wave number fe e Se Hs ae el E e Press the NEXT Sync output a key to display d the 1st page BrstMode Mark Space StpLwl SyncOut y Mark wave number Mark This is the wave number for oscillation It can be set in 0 5 cycle units Normally it is set in 1 cycle units Space wave number Space This is the wave number for oscillation stop It can be set in 0 5 cycle units Normally it is set in 1 cycle units Stop level StpLvl This is the signal level during oscillation stop The level can be set
49. 6 unit of amplitude changing c000 48 user defined unt 31 Utility screen function 0ocoocccnccnccnnccnncnninanas 39 V YOE E 48 53 e A PPP E 48 53 A 48 W 5 fe el 2 EN 157 Waste disposal secarse IV waveform amplitude range cccceeeee eee 52 waveform polarity ooccconccncccnccnccnncnnncnnacnnoso 52 waveform polarity and amplitude range AA E A 52 waveform setting ooccocccncccncccncnncccncnnnccnianoness 44 156 MULTIFUNCTION GENERATOR _ WARRANTY NF CORPORATION certifies that this instrument was thoroughly tested and inspected and found to meet its published specifications when 1t was shipped from our factory All NF products are warranted against defects in materials and workmanship for a period of one year from the date of shipment During the warranty period of NF will at its option either will repair the defective product without any charge for the parts and labor or either repair or replace products which prove to be defective For repair service under warranty the product must be returned to a service center designated by NF Purchaser shall prepay all shipping cost duties and taxes for the product to NF from another country and NF shall pay shipping charge to return the product to purchaser This warranty shall not apply to any defect failure or damage caused by improper use improper or Inadequate maintenance and care or modified by purchaser or personnel o
50. 73 WF1974 ranging from installation to connection of the power supply 3 PANELS AND I O TERMINALS Describes the functions and operations of the switches and I O terminals of the panel controls 4 BASIC OPERATION Describes how to use basic functions 5 SAVING AND RECALLING SETTINGS Describes how to store and retrieve the settings 6 LIST OF INITIAL SETTINGS Describes initial settings 7 SPECIFICATIONS Lists the specifications functions and performance of the WF1973 WF1974 Application 1 DETAILS OF PARAMETER VARIABLE WAVEFORMS Explains the meanings of each parameter of parameter variable waveforms and waveform examples 2 CREATING ARBITRARY WAVEFORMS Explains how to input and edit arbitrary waveforms from the panel control WF1973 WF 1974 D 3 HANDY USE OF 2 CHANNEL DEVICE WF1974 ONLY Explains how to operate two channels at the same time 4 SYNCHRONIZING MULTIPLE UNITS Describes how to configure a multi phase oscillator by connecting multiple units of this product 5 USING EXTERNAL FREQUENCY REFERENCE Describes how to use external frequency reference 6 USING SEQUENCE OSCILLATION Describes how to set and operate sequence oscillation 7 USING USER DEFINED UNITS Explains the units that can be optionally set by users 8 OTHER UTILITY SETTINGS Explains how to set display and operational details 9 TROUBLESHOOTING Explains error messages and how to respond to cases where a failure is suspected
51. Burst sync signal Oscillation Stop Oscillation Stop Output signal i To execute oscillation in half cycle units Set oscillation stop unit to half cycle To stop oscillation in half cycle units set OscStop oscillation stop unit on the 2nd page of the setting screen to HalfCycle half cycle Normally Cycle 1 cycle is set When Cycle 1 cycle is set oscillation is done in integer cycles The next figure compares oscillation done using 1 cycle and half cycle as the oscillation stop unit under the following conditions oscillation start stop phase 30 stop level off In the case of 1 cycle units following gate off oscillation stops once the oscillation start stop phase is reached In the case of the half cycle unit following gate off the oscillation stops once the oscillation start stop phase or oscillation start stop phase 180 or 180 is reached and then the oscillation start stop phase is transited to Gate signal Gate on Gate off Gate on Gate off Oscillation in 1 cycle units Oscillation start stop 7 phase 30 Oscillation stop at 210 Oscillation in 3 half cycle units E j Usage of stop level The level when oscillation is stopped is normally set with the oscillation start stop phase but 1t can also be set independently from that with a proportion of the amplitude full scale Set StpLvl stop level on the 2nd page of the setting screen to On on and set the lev
52. CH2 switching key and active channel WF1974 only The channel to be set is switched each time the CH1 CH2 switching key is pressed This key is invalid in setting screens that are channel independent a The channel that is to be set is called the active channel in this be MAN TRIG DTO product In the burst oscillation mode etc the CO MAN TRIG key CH1 CH2 works for the active channel Even if the screen is changed to a switching key channel independent screen the channel that was active up to that point is saved CH1 active CH2 active CH1 channel to be set CH2 channel to be set Oscillator Continuous Sine 1 000 000 000 00 Hz 0 100 Yp p 0 000 Y 0 000 deg Con tinuous Sine 1 000 000 000 00 Hz 0 100 Yp p Auto Hab 0 000 Y 0 000 deg Continuous Square 2 000 000 000 00 Hz 1 000 Yp p ute Highz 0 000 Y 0 000 deg 50 000 0 4 Phase Duty CH 1 CH 2 Continuous Square 000 000 000 00 Hz 1 000 Yp p 0 000 Y 0 000 deg 50 000 0 Continuous Sine E 1 000 000 000 00 Hz Square 2 000 000 000 00 Hz 1 000 Yp p ee mp 0 000 Y 0 100 p p H 0 000 0 000 deg CH 1 CH 2 Q 0 000 deg 50 000 0 Phase Duty EN MULTIFUNCTION GENERATOR 4 3 Basic Settings and Operations 4 3 7 Actions possible in the Utility screen a Displaying the Utility screen The top menu window is displayed by pressing the MENU key In this Oscillator Geier ae window select Utility
53. CIFICATIONS 7 11 Other I Os External 10 MHz frequency reference input Frequency reference selection External reference enable disable selectable Input voltage Maximum allowed input Input impedance Input frequency Input waveform Input connector Output voltage Output impedance Output frequency Output connector External addition input Addition gain Input voltage Maximum allowed input Input frequency Input impedance Input connector Multi I O Applications Input voltage Maximum allowed input Output voltage Connector 0 5 Vp p to 5 Vp p 10 Vp p 1 kQ unbalanced AC coupled 10 MHz 40 5 450 kHz Sine wave or square wave 50 5 duty Rear panel BNC receptacle Frequency reference output for synchronizing multiple WF1973 WF1974 units 1 Vp p 50 Q square wave 50 Q AC coupled 10 MHz Real panel BNC receptacle x2 x10 off selectable During x2 the maximum output voltage range is fixed to 4 Vp p and during x10 20 Vp p Off during sequence oscillation 1 V to 1 V t2 Y DC to 10 MHz 3 dB 10 kQ unbalanced Front panel WF1973 rear panel WF1974 BNC receptacle Shared with external modulation input cannot be used during external modulation Sweep control sequence control TTL level low level of 0 8 V or lower high level of 2 6 V or higher Pulled up to 5 V through 10 kQ 0 5 V to 5 5 V TTL level low level of 0 4 V open or lower high level
54. CTION GENERATOR 4 4 Setting Methods for Main Items 4 4 9 Setting the output level with high level low level The output level can be set by specifying the high level and low level of the waveform instead of setting the amplitude and DC offset a Changing the amplitude DC offset display to high low display There are three methods for changing the amplitude DC offset display to high low display described below O Changing to high low display with the High or Low soft key When the amplitude or DC offset input field is open and the current value is displayed the High or Low soft key is displayed By pressing this key the high level or low level input field opens and the item displays change from Amptd and Offset to High and Low respectively The High or Low soft key changes to Amptd or Offset When the Amptd or Offset soft key is pressed at this time the amplitude or DC offset input field opens O Changing to high low display by pressing the AMPTD key twice While the amplitude input field is not opened press the AMPTD shortcut key twice to open the high level input field If the high level input field is open the amplitude DC offset display and high low display are toggled each time the AMPTD key is pressed O Changing to high low display by pressing the OFFSET key twice While the DC offset input field is not open press the OFFSET shortcut key twice to open the low level input field If the low le
55. E Crean 141 A o o Eee 142 7 12 2 channel ganged operation WF1974 only 143 7 13 Synchronous Operation of Multiple Units ccocccoccconnconnconnconnconnno 144 114 User Defined UNS censor isc 144 TAS Oner FUNCION Sesenta 145 TAO ONIO EE 145 7 17 General Characteristics coocccconncccncoonnoconnccnnonannnnanocnnnonannonanonnnnnnaninanoss 145 E External dimensions WF1973 oocccocnccccncconncconocononnnnnonononanocnnnonannonanicnnnonanons 147 E External dimensions WE 1974 oocccoccccccnccccncconncocnnonnncnononnnononnnnnnnonnnnnnanonanons 148 RACK MOUNTING DIMENGIONG oo ccc ceec cece eeeneee eee eeeeeeeeeeeeaeeeenees 149 W Inch rack mounting dimensions for 1 unt 149 W Inch rack mounting dimensions for 2 unttel 150 E Millimeter rack mounting dimensions for 1 ont 151 E Millimeter rack mounting dimensions for 2 unt 152 Figures and Tables Figure 3 1 Front Panel of WEIO H 8 Figure 3 2 Rear Panel Of WE1973 ccccccccceccceeeeceeeceeeeceeeseaeeseeeseeeseeseeessueeseees 9 Figure 3 3 Front Panel Of WF1974 0 00 0 cccccccsseceseeceeeeseeeseeeeeaeesegeeseeeeeeseeesees 10 Figure 3 4 Rear Panel Of WF1974 ooccocccncccccccccccnconcncocnconnnnncnononononnnnnnnnnnnnonononnnnnos 11 Figure 3 5 Multi 1 O Connector Pin Aesignment 17 Figure 3 6 Cautions on Floating Ground Connection for WE 1973 cccoccnccnccco 20 Figure 3 7 Cautions on Floating Ground Connection for WF1974
56. F1973 WF1974 the user should read the following sections of this instruction manual before using the WF1973 WF1974 e Safety Precautions provided at the beginning of this instruction manual e 2 3 Grounding and Power Supply Connection b Appearance and accessories check If an abnormality such as a flaw or dent is found on the outside surface of the corrugated box carefully check if the product is adversely affected when removing the product from the corrugated box After opening the corrugated box check the items contained in the box If an abnormality such as a flaw or dent is found on the product or an accessory 1s missing contact NF Corporation or its representative e Appearance check Check that no abnormalities such as a flaw and dent are found on the panel controls connectors and so forth e Configuration and accessory check The accessories of this product are listed below Check that there are no missing items and no flaws are found Main unit Instruction Manual Basics CD PDF instruction manuals application software PDF instruction manuals Basics Application Remote Control Arbitrary Waveform Editing Software Sequence Editing Software LabVIEW Driver Application software Arbitrary Waveform Editing Software Sequence Editing Software LabVIEW Driver Power cord set 2 m with 3 prong plug ANA INN INES This product contains high voltage parts Never remove the cover All internal inspections of
57. FSK PSK 0 1 mHz to 100 kHz 5 digits or 0 1 mHz resolution FSK PSK 0 1 mHz to 1 MHz 5 digits or 0 1 mHz resolution Internal modulation sync output Output waveform Square wave with 50 duty that rises at zero phase position of internal modulation waveform Fixed to low level while internal modulation waveform is noise Output connector Shared with sync sub output connector Internal modulation signal output Output voltage 3 V to 3 V open Output connector Shared with sync sub output connector External modulation input other than FSK PSK Input voltage range 1 V full scale Maximum allowed input 2 V Input impedance 10 kQ unbalanced Input frequency DC to 25 kHz Input connector Front panel WF1973 rear panel WF1974 BNC receptacle Shared with external addition input cannot be used simultaneously with adding operation External modulation input FSK PSK Polarity Positive negative selectable Input frequency DC to 1 MHz KEN MULTIFUNCTION GENERATOR 7 6 Modulated Oscillation Mode Input connector 7 6 2 Modulation conditions E FM Carrier waveform Peak deviation setting range E FSK Carrier waveform Hop frequency setting range E PM Carrier waveform Peak deviation setting range E PSK Carrier waveform Deviation setting range Remark E AM non DSB SC Carrier waveform Modulation depth setting range Remark Use of external trigger input Input voltage and input impedance fol
58. LATION SOVA ob i i TTL 3Vi a SYNC SUB OUT V i 100V 230V LINE 3 lt 0 10MHz REF IN fo REF OUT for ANALOG 3 2 SYSTEM CONTROLLER POWER for SYSTEM SUPPLY Co TRIG IN CONTROLLER gt USB GPIB MULTI I O EM Analog block The DDS digital direct synthesizer uses a 120 MHz clock to generate various types of oscillation and waveforms Modulation sweep burst and sequence are also processed within the DDS The digital waveforms generated by the DDS are controlled to the specified polarity normal inversed in the amplitude range FS 0 FS 0 FS and following digital amplitude adjustment the signal is input into the digital to analog D A converter The waveform converted into an analog signal by the D A is then smoothed by the lowpass filter LFP and the amplitude is controlled in 10 dB steps by the programmable gain amplifier PGA The external addition signal and DC offset are added to the PGA output When an output voltage exceeding 2V open is required output is done via the x5 amplifier The maximum output voltage of the product is either 20 Vp p or 4 Vp p depending on whether or not the X5 amplifier is used Also depending on this the external addition gain is either x10 or x2 After passing through the LPF the external modulation signal undergoes A D conversion and is then input to the DDS NES MULTIFUNCTION GENERATOR 1 2 Operating Principles MW WF1974 block diagr
59. Low from start value to marker value Sweep X drive signal X Drive Sweep time Sweep time Sweep time Single shot sweep gated single shot sweep One way Shuttle A Stop value A Stop value Marker value Marker value Sweep value eee Ee e A eS E Start value Start value 3 Low during the 1st half of interval 1 Sweep sync orietan Low from start signal SwpSync value to value to stop marker disabled stop value value Sweep sync signal Low from p i j Lowfrom SwpSync Mkr start value to start value to marker enabled marker value marker value 3 V emm Ae Sweep X drive signal X Drive Sweep time Sweep time Sweep time Bee d EE ee d WF1973 WF 1974 93 4 BASIC OPERATION r To substitute center value to marker value or substitute marker value to center value When the Ctr gt Mkr soft key on the 2nd page of the setting screen is pressed the center value is substituted to the marker value When the Mkr gt Ctr soft key is pressed the marker value is substituted to the center value When these soft keys are not displayed on the 2nd page of the setting screen press the w 1 2 soft key on the right end to switch the soft key sets s To control sweep start stop and pause with external logic signal When ExtCtrl external control on the 3rd page of the setting screen is set to Enable sweep manipulation through
60. OL yun urew ay DIOU 0 198 ay ul seajays JO s ax9e q 7 BSN o Bins ag slajdepe JUNOW OR ay yum juo y DIOU JOU Op 498 ay ul yun ay junou O uonnes 10 2 6gd9 asung Aes6 1yB1 e111n ul payuled Jajdepe junow Joey uauu e3 1 soeuns 9 Gi S9 PLLLPA 0 of Oo Oo 9 OEF St N O LL CA we O LL W Inch rack mounting dimensions for 2 units RACK MOUNTING DIMENSIONS UONCJBPISUOD ojul Uaye aq ISNW sjey9eJq Bunosuuos y jo sseuyxoluy 9y Sales yym pun ayy Bununou USA yun urew ay DIOU 0 198 1 ay Ul SAAJSUS JO SIOADEIQ BSN O SINS ag sJajdepe JUNOW OR ayy yum juO y DIOU JOU Op 498 ay ul yun y junou O uonnes 10 2 6gd9 Isun Aeb 1yB1 e11n ul payuled Jajdepe junow Joey uau e3 soeuns D O E st X m Z L O Z O E O Z D D E fue yeyoesg Bunoauuo fue joy9e1q Bunoauuo Buisnoy jo apis woyoq 7 SUOISUBWIP jeyOeIG HuNdsUUOD 9 ZEY RACK MOUNTING DIMENSIONS E Millimeter rack mounting dimensions for 1 unit COSE yun urew ay DIOU 0 198 y ul seajays JO s ax9e q 7 BSN 0 Bins ag sJojdepe JUNOW OR y YIM juo y DIOU JOU op yoe y ul yun y JUNOW O uonnes 10 2 6gd9 asung Aes6 1yB1 e111n ul payuled Jajdepe junow Joey uauu e3 1 soeuns
61. Setting and Manipulation 4 8 8 Setting duty sweep For the manipulation methods that are common with the sweep setting screen refer to pp 88 and 86 a Duty sweep example The following is an example of continuous linear shuttle sweep Shuttle sweep Stop value Sweep value Start value Seep time Sweep time Output signal b Selecting duty sweep Freq When Mode oscillation mode is set to Sweep sweep set Type sweep type Amp td on the 2nd page of the setting screen to Select Duty in e we Type and then Duty duty press the ENTER key c Waveforms for which duty sweep is not possible Duty sweep is possible only for square and pulse waves d Setting items required for duty sweep Set the following items on the 2nd page of the setting screen The duty settings on the Let page of the setting screen are disabled Start duty Start The duty range depends on the frequency In the case of a pulse wave it also depends on the leading edge time and the trailing edge time pp 60 63 e Stop duty Stop The duty range depends on the frequency In the case of a pulse wave it also depends on the leading edge time and the trailing edge time pp 60 63 Sweep time Time This is the transition time from the start duty to the stop duty ep 87 Sweep mode SwpModel Continuous single shot and gated single shot can be chosen from ep 87 Sweep function SwpFctn One way
62. TOR F SPECIFICATIONS The values of items marked with 1 are guaranteed values All other values are either nominal values or typical typ values and are not guaranteed Conditions unless otherwise mentioned are as follows Continuous oscillation 50 load 10 Vp p 50 Q amplitude setting O V DC offset setting auto range FS waveform amplitude range external addition off AC voltage RMS value measurement 7 1 7 2 1 Oscillation Modes Continuous modulated sweep burst sequence 7 2 Waveforms Standard waveforms Types Polarity Amplitude range Arbitrary waveforms Waveform length Total waveform saving capacity Waveform data amplitude resolution Sampling rate Polarity Amplitude range Output bandwidth Sine square pulse ramp parameter variable waveform noise Gaussian distribution DC Normal inverted selectable excluding DC FS O FS 0 FS selectable excluding DC 4 K to 512 K words 2 n 12 to 19 or 2 to 10 000 control points linear interpolation between control points Up to 128 waveforms or 4 M words combined total for channels 1 and 2 Saved to non volatile memory 16 bits 120 MS s Normal inverted selectable FS O FS 0 FS selectable 25 MHz 3 dB WF1973 WF 1974 KE 7 SPECIFICATIONS 7 3 Frequency Phase Frequency setting range Oscillation Mode Continuous Modulated Sweep Gated Single Sequence Sweep Continuous Sho
63. The pulse width can be set either with time or duty The leading and trailing edge times can be set only with time a Pulse width time setting method 1 Select the Width field and then press the Continuous Pulse P ENTER key to open the pulse width 10 000 000 000 000 OOMHz time input field 0 100 Vp p Im HES Even if there are several setting screens 0 000 Y the Width field is always displayed on the 0 000 deg first page If Duty is displayed in the Width field and the pulse width duty and not the pulse width time is displayed press the Width soft key if the duty input field is open to switch to the pulse width time display Pulse width time input field 2 Select the digit to be changed with the lt J gt left right arrow keys and increment decrement the value with the U up down arrow keys or the modify knob The change is instantly reflected to the output Alternatively enter a numeric value using the O C9 numeric keypad Then press the ENTER key or the unit key soft key to set the input value and reflect it to the output If the ENTER key is used the unit is set to s b Pulse width duty setting method 1 Select the Duty field and then press the Continuous Pulse P ENTER key to open the pulse width 10 000 000 000 000 rs duty input field 0 100 Vp p mua mz Even if there are several setting screens 0 000 Y the Duty field is always displayed on the 0 000 deg first page If Width is disp
64. Vp p Vpk Vrms dBV dBm user defined unit 1 When the amplitude input field is open Continuous Sine press the Unit soft key and move the 1 000 000 000 00 Hz cursor to the unit position on the right end 0 100 Yo o NT Place cursoron 2 The unit can be changed with the QU 0 000 deg ae up down arrow keys or the modify knob Units that cannot be used are not displayed Even if the display unit is changed the actual output value remains unchanged c The units that can be used differ according to the waveform Vp p Vpk Vrms dBV dBm and user defined units can be used as the amplitude units However the applicable waveforms are limited as follows not applicable to DC Sine wave and noise 1 Vrms 0 dBV Example In the case of a load impedance setting of 50 Q 0 dBm 223 6 mVrms 50 Q Not usable when the load impedance setting is High Z dBm Sine wave and noise Voltage of 1 mW set as 0 dBm for the specified load impedance p 55 User defined All waveforms unit For details on user defined waveforms 7 USING USER DEFINED UNITS in the Application Instruction Manual MULTIFUNCTION GENERATOR 4 4 Setting Methods for Main Items d AC DC limitation The maximum value for AC amplitude DC offset is limited to 10 V open For example if the AC amplitude is 5 Vp p open the DC offset range is limited to the range from 7 5 V open to 7 5 V open The maximum value varies accord
65. WEIO 9 3 1 3 Front panel Of WF1974 ocoooconcccccccocccocccoccconoconcconocnnnonnncnnonanonanncanonanonanos 10 3 1 4 Rear panel of WF1974 00 cccecccscceseeseeeee eet eeeeeeseeeeeeeeeeeeeeaeeeaeetenees 11 3 2 VO TE MINS unen eine 12 3 2 1 Waveform output FOTN OUT 12 3 2 2 Sync sub output GrNCOGSUROUT 13 3 2 3 External modulation addition input MOD ADD IN 14 3 2 4 External trigger input TRIG IN oocccccncnccnccccccccncoccncnccconcnconcnconncnncncnons 14 3 2 5 External 10 MHz frequency reference input 10 MHz REF IN 15 3 2 6 Frequency reference output REF OUT 16 3 2 7 Multi l O MULTI 6 D 16 3 3 Cautions on Floating Ground Connechon 19 Be BA C OPERATION rss tries 21 4 1 Power on off Switching and Restoration of Settings 00 00n00nn01naannannnennn 21 4 1 1 Power on off switching method 21 4 1 2 Restoration of settings at power on cooccccccncccnccccnconcnconnnoncnnnnnnonnnnonnnnonons 22 4 2 Screen Configuration and Operation aaannannennennannnnnnnnnnnnnnnnennnnnnenrnnnnnne 25 4 2 1 Screen configuration noannaanneneannennnaneonennnrrnronrnerrnnrrnrrnnennnrnnernrrenernne 25 4 2 2 Switching display format with tabs displaying waveform graph 2 He db ele E E EE 29 4 3 Basic Settings and Operations occccccccccncccnnccccnconnnnnnnnnnnnnnnnnnnnnnnnnnonnnonaninnnons 30 WF1973 WF1974 NA 4 3 1 Changing the frequency amplitude and other v
66. WF 1974 WAVE FACTORY w b N MODEL SERIAL NO NF Corporation MADE IN JAPAN 0000 0000 MOD ADD CH1 CH2 IN MOD ADD MOD ADD Insulated from housing IN IN Insulated from Insulated from housing housing When the modulation source is external except for FSK and PSK an external modulation signal is input In the case of the FSK and PSK the external trigger input is used as external modulation signal input When not used as external modulation signal input MOD ADD IN may be used as the external addition signal input The gain during external addition is either x2 or x10 External modulation input ep 73 External addition input ep 57 E Input Specifications Input voltage 1 V full scale Input impedance 10 kQ Input frequency During modulation DC to 25 kHz During addition DC to 10 MHz 3 dB Signal GND Same potential as same channel waveform output insulated from housing 42 Vpk max WF 1974 Insulation also between channels 42 Vpk max 3 2 4 External trigger input TRIG IN WF1973 WF1974 8 D z IFUNCTION GENERATOR WF1973 MODEL SERIAL NO NF Corporation MADE IN JAPAN 0000 0000 CH2 CH1 TRIG TRIG IN IN TRIG IN may be used as external trigger input in the following cases The polarity setting can be changed Single shot sweep st
67. Width 0 01 to 100 00 of basic period Trapezoid pulse Slope width 0 00 to 50 00 of basic period Upper base width 0 00 to 100 00 of basic period Sin x x waveform Number of zero crossings 1 to 50 MULTIFUNCTION GENERATOR 7 5 Signal Characteristics d Transient response group Waveform Waveform Description and Variable Parameters Name Example Exponential rise Exponential fall Second Second order LPF step response waveform order LPF LPF natural frequency 1 00 to 50 00 times basic frequency step t LPF Q 0 50 to 50 00 response Damped Oscillation waveform with an amplitude that decreases exponentially oscillation Oscillation frequency 0 01 to 50 00 times basic frequency Damping time constant 100 00 to 100 00 of basic period Remark In the case of a negative damping time constant oscillation waveform with an amplitude that increases exponentially e Surge group Waveform Waveform Description and Variable Parameters Name Example Oscillation Surge waveform with damped oscillation PUSE Oscillation frequency 0 01 to 50 00 times basic frequency Damping time constant 0 01 to 100 00 of basic period Trailing time constant 0 01 to 100 00 of basic period Pulse surge Pulsed surge waveform Rising time 0 01 to 100 00 of basic period Duration time 0 01 to 100 00 of basic period Remark The rising time represents the time from the 10
68. alues 30 4 3 2 Changing the waveform and oscillation mode sonnonnennennennsnrernnrnennn 33 4 3 3 Manipulating shortcut keys for changing basic parameters 34 4 3 4 Operations of ENTER key CANCEL key and UNDO key 35 4 3 5 Changing the display unt 36 4 3 6 CH1 CH2 switching key and active channel WF1974 only 38 4 3 7 Actions possible in the Utility screen 39 4 3 8 Restoring the initial settings 0nn0nnannnnannnnennnnnnnnnnnnnnrnnnnrnnrnrnnrerrnrenne 41 to WE TE n WEE 41 4 4 Setting Methods for Main ltemS 00nn0annnnnannnannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnrnnernnnnnee 43 4 4 1 Configuration of text display screen in continuous oscillation mode 43 4 4 2 Setting the oscillation mode 43 4 4 3 Setting the waveform ccooccccccccconncccnncocnoconnonononannnnnnnnnnnonnnnnnnnonannnnaninaninns 44 4 4 4 Setting the frequency ccooccccccccconccocnoconnocononannnnnnnnnnnonannonnnnnannnnaninnnnnnanons 44 4 4 5 Performing setting With Derod 45 A ES e An 45 4 4 7 Setting the amplitude noenennoenennonnonnonnsnnonnsrrenrsnrsrrsnrerrerrerrerrerrsrrerenrrnne 48 AS A A e PA 50 4 4 9 Setting the output level with high level low level nnunnonnnnnnnnnnnnnnnnnnnnns 51 4 4 10 Setting the waveform polarity and amplitude range 0 n0nnoanonnoen0ennn 52 4 4 11 How to use auto range range hold for the output voltage
69. am ANALOG CH2 EXTERNAL 1V MODULATION MOD ADD i i IN l l 7 FCTN ME OUT ISOLATION i gt l E i SYNC SUB OUT l Y CLOCK GENERATOR l 100V 230V LINE 3 lt 0 10MHz REF IN o REF OUT for ANALOG CH1 SYSTEM 3 m CONTROLLER Co TRIG IN CH1 for ANALOG CH2 lt SUPPLY Co TRIG IN CH2 for SYSTEM CONTROLLER USB GPIB MULTI I O e The analog block is insulated from the system controller block located in the housing potential In the WF 1974 the analog block comprises two channels each individually isolated from the housing potential NW System controller block e This block performs control of the analog block including the display panel key processing remote control GPIB USB processing trigger input processing frequency reference control DDS control amplitude and DC offset e A 20 MHz crystal oscillator is used as the basic oscillation of the DDS The signal to synchronize multiple units is sent to REF OUT frequency reference output and the inter channel sync WF1974 only is sent to the analog block of each channel MW Power supply block The AC DC directly connected to the power supply input is in a constantly powered state e Control of each power supply circuit is done through power switch manipulation WF1973 WF 1974 ER 2 PREPARATIONS BEFORE USE 2 1 Checking Before Use a Safety check To ensure safety in using the W
70. and set the level with a value The following examples are for mark wave number 3 oscillation start stop phase 30 stop level off and 50 when on Note that the oscillation start stop phase remains valid Oscillation start stop phase 30 A Stop level off Oscillation start stop phase 30 Stop level 50 dB Stop level on When the stop level is applied to a square waveform a 3 value square waveform can be output as shown in the following figure In the example presented in this figure the stop level is set to 0 and the oscillation start stop phase to 0 Either the normal or extended variable duty range may be used If the stop level is not applied the level of the square waveform during oscillation stop is either to low level or high level 112 MULTIFUNCTION GENERATOR 4 9 Burst Setting and Manipulation 4 9 4 Gate oscillation Oscillation is done in integer cycles or half cycles while the gate is on The settings and manipulations are done on the Oscillator setting screen Oscillator is displayed at the top left of the Oscillator setting screen When another screen is displayed pressing the MENU key displays the top menu so select Oscillator and then press the ENTER key a Gate oscillation example The following example is for oscillation start stop phase 30 oscillation stop unit 1 cycle stop level off After the gate signal becomes off oscillation stops once the o
71. ange of space wave number 0 5 cycles to 999 999 5 cycles in 0 5 cycle units Oscillation stop unit during gate 1 cycle 0 5 cycles selectable Oscillation start stop phase setting range 1800 000 to 1800 000 0 001 resolution Remark Same setting value as phase setting in section 7 3 Stop level setting range Function Specification of signal level when oscillation is stopped Setting range 100 00 to 100 00 of amplitude full scale 0 01 resolution or off When the stop level is set to off stop occurs at the set oscillation start stop phase Trigger source used during other than auto burst Internal external selectable Manual trigger possible Internal trigger oscillator for burst used during other than auto burst Period setting range 1 0 us to 1 000 s 5 digits or 0 1 us resolution Trigger delay setting range 0 00 us to 100 00 s 5 digits or 0 01 us resolution Latent delay of 0 55 us Only valid for trigger burst not valid for gate triggered gate Valid for both internal and external trigger sources Not valid for manual trigger Trigger jitter 1 ns rms or less typ Burst sync output Polarity Low level during oscillation High level at all other times Output connector Shared with sync sub output connector 7 9 Triggers External trigger input Applications Used for single shot sweep gated single shot sweep trigger burst gate triggered gate and sequence Input voltage TTL level low level of 0 8 V or lo
72. anipulation 4 9 3 Trigger burst Oscillation with the specified wave number is done each time a trigger 1s received Settings and manipulations are done on the Oscillator setting screen Oscillator is displayed at the top left of the oscillator setting screen When another screen is displayed pressing the MENU key displays the top menu so select Oscillator and then press the ENTER key a Trigger burst example The following example is for mark wave number oscillation wave number 4 oscillation start stop phase 80 stop level off Oscillation start stop phase 30 Trigger signal Output signal Trigger delay time de ee eee gt No new trigger accepted in this interval b Setting the oscillation mode to trigger burst 1 Continuous Zod Select Burst in Mode and then press the ENTER key Note Trigger_ i CE ke Select Trigger in 4 TrigGate BrstMode and then press the ENTER key Trigger delay time Set Mode oscillation mode to Burst on the Oscillator setting screen The oscilla tion mode is switched to the burst oscilla tion mode as a result In the burst oscillation mode the setting screen consists of two pages which can be toggled with the NEXT key Next set BrstMode burst mode on the 2nd page of the burst oscillation mode setting screen to Trigger trigger burst WF1973 WF 1974 109 4 BASIC OPERATION
73. art trigger p 90 Gated single shot sweep start trigger p 90 Trigger burst oscillation start trigger p 111 MULTIFUNCTION GENERATOR 3 2 I O Terminals Gate of gated oscillation sp 115 Triggered gate oscillation trigger ep 120 e Sequence oscillation start trigger 6 2 Basics in the Application Instruction Manual TRIG IN can also be used as the external modulation input for FSK and PSK p 73 W Input Characteristics TTL level ow 0 8 V or lower high 2 6 V or higher Maximum allowed input 0 5 V to 5 5 V Signal GND Same potential as housing 3 2 5 External 10 MHz frequency reference input 10 MHz REF IN WF1973 WF1974 10MHz REF IN 10MHz REF IN Insulated from housing Insulated from housing 10 MHz REF IN can be used for the following purposes NW When frequency accuracy higher than the frequency accuracy specification of the equipment is required or when the frequency reference of a different signal generator is desired Input the 10 MHz reference signal output from an external frequency standard or another signal generator Enable external frequency reference setting 5 USING EXTERNAL FREQUENCY REFERENCE in the Application Instruction Manual E To unify the frequency and phase for mult
74. ated single shot Trig trigger condition must be set 7 p 90 WF1973 WF 1974 99 4 BASIC OPERATION Set the following items as needed e Marker amplitude Marker 2nd page of setting screen p 92 e Stop level StpLvll 3rd page of setting screen e p 89 This setting can be used only for gated single shot sweep e External control with multi I O connector ExtCtrl 3rd page of setting screen p 94 e Oscillation stop unit for gated single sweep lOscStop 3rd page of setting screen p 89 This setting can be used only for gated single shot sweep e Sync output SyncOut 3rd page of setting screen p 92 100 MULTIFUNCTION GENERATOR 4 8 Sweep Setting and Manipulation 4 8 7 Setting DC offset sweep For the manipulation methods that are common with the sweep setting screen refer to pp 88 and 86 a DC offset sweep example The following is an example of continuous linear shuttle sweep Shuttle sweep Stop value Sweep value Start value zg Sweep time o GEET gt Output signal b Selecting DC offset sweep Pe When Mode oscillation mode is set to 9 Phase Sweep sweep set Type sweep type e pe rd on the 2nd page of the setting screen to press the ENTER Offset DC offset key c Waveforms for which DC offset sweep is not possible None DC offset sweep 1s possible for all waveforms However when DC is selected as the waveform the DC level itself becomes
75. ated single shot 1 cycle 0 5 cycles selectable Sweep sync marker output Marker off one way sweep Low level from sweep start value to half of sweep time High level at any other time Marker off shuttle sweep Low level from sweep start value to sweep stop value High level at any other time Marker on Low level from sweep start value until marker value High level at any other time Output connector Shared with sync sub output connector Sweep X drive output Output voltage O V to 3 V open 0 V 3 V during sweep value rise 3 V 0 V during sweep value fall Output connector Shared with sync sub output connector Sweep external control input Input connector Use of 3 bits of multi I O connector Control items Start stop hold resume KE MULTIFUNCTION GENERATOR 7 8 Burst Oscillation Mode Sweep external trigger input used for single shot sweep and gated single shot sweep Polarity Input connector 7 7 2 Sweep conditions E Frequency sweep Waveform Start stop frequency setting range E Phase sweep Waveform Start stop phase setting range E Amplitude sweep Waveform Start stop amplitude setting range E DC offset sweep Waveform Start stop DC offset setting range E Duty sweep Waveform Start stop duty setting range Square wave Normal variable duty range Extended variable duty range Pulse wave Positive negative off selectable Use of external trigger input Input voltage and input
76. ation with a trigger Single shot sweep Set SwpModel sweep mode on the 2nd page of the setting screen to Single single Since a trigger signal is required set the trigger signal with Trig trigger on the 2nd page For the trigger setting procedure ep 90 The transition time from the start value to the stop value is set with Timel sweep time on the 2nd page In the case of single shot sweep one sweep 1s executed upon reception of a trigger The change sequence differs depending on whether the sweep function 1s one way or shuttle as shown in the following figure In the case of one way sweep the start value is immediately returned to upon sweep completion In the case of shuttle sweep execution enters standby in the sweep completion state Single shot one way sweep Trigger i 1 Stop value Sweep value Start value Zi gt Start value Sweep time Frequency sweep example MULTIFUNCTION GENERATOR 4 8 Sweep Setting and Manipulation Single shot shuttle sweep Trigger Stop value Sweep value Star value Teese e EE Sweep time Sweep time Frequency sweep example j To output the waveform only during sweep execution Gated single shot sweep Set SwpMode sweep mode on the 2nd page of the setting screen to Gated gated single shot This operation combines gated oscillation and sweep with sweep execution in synchronization with a trigger Since a trigger signal is
77. aveform choice list Oscillator 0 000 deg E Frequency p 44 The frequency input field opens Continuous 1 OO OO AYA NN Hz FREQ 1 008 000 000 00 hz L NO 0 000 Y dees 0 000 deg Unit MW Amplitude Sp 48 The amplitude input field opens er Con jnuous 1 G 0 000 000 00 Hz MW DC offset p 50 The DC offset input field opens Oscillator Unit EN MULTIFUNCTION GENERATOR 4 3 Basic Settings and Operations 4 3 4 Operations of ENTER key CANCEL key and UNDO key MW ENTER key operation The ENTER key can be used to perform the following actions Open the input field or choice list for the selected item e Set the value input from the numeric keypad Perform the function of the button displayed on the screen MW CANCEL key operation The CANCEL key can be used to perform the following cancellation actions However once a setting has been changed the original setting cannot be returned to this can be done with the UNDO key Sl E gt described next O Close an input field or choice list IN Discard a value input from the numeric keypad e Return a changed value to the original value with the modify knob Close the setting window or dialog box Mm UNDO key operation The UNDO key can be used to restore the settings changed by using the ENTER key or the modify knob Changes to settings that have been automatically executed as the result of the user s manipulatio
78. ble Duty can be changed in range with little jitter and no pulse loss The higher the frequency the narrower the duty setting range With 2 5 ns rms or less typ jitter duty can be changed always in maximum range In the case of a pulse width of 8 4 ns or less loss may occur on average it 1s equal to the set duty 0 0100 to 99 9900 0 0001 resolution Upper limit 100 frequency Hz 300 000 Lower limit frequency Hz 300 000 0 0000 to 100 0000 0 0001 resolution 0 1 of period duty setting 1 to 99 1 of period duty setting 5 to 95 3 of period duty setting 40 to 60 17 ns or less However approx 20 ns in the case of burst oscillation with stop level setting gated single shot sweep with stop level setting and sequence oscillation 5 or less typ Normal variable duty range 300 ps rms or less typ 100 Hz or higher Extended variable duty range 2 5 ns rms or less typ 0 0170 to 99 9830 0 0001 resolution 25 50 ns to 99 9830 Ms 0 001 or less of period or 0 01 ns resolution 132 MULTIFUNCTION GENERATOR 7 5 Signal Characteristics Leading edge time trailing edge time Setting range 15 0 ns to 58 8 Ms 3 digits or 0 1 ns resolution Leading edge time and trailing edge time independently settable Minimum setting value Largest of either 0 01 of period or 15 ns Pulse width leading edge time trailing edge time limits The pulse width time leading edge time
79. changed is the 1 kHz digit Prefix Unit Oscillator Continuous Sine 1 000 000 000 00 Hz 00 000 000 00 Hz 0 Y Jh0d_das The value of the changed digit is now 2 Prefix Unit 1 Select the desired item with the arrow keys or the modify knob In the example on the left the Freq frequency field is selected Item selection 2 Press the ENTER key The input field below the selected item opens and the selected item status changes so that the current value can be changed In this state a value can also be input by using the numeric keypad K 3 Press the left right arrow keys to move the cursor to the digit of the value to be changed In the example on the left the cursor is moved to the 1 kHz digit Cursor movement lt gt 4 increment or decrement the value of the digit to be changed with the up down arrow keys or the modify knob In the example on the left the value is changed to 2 kHz The change is instantly reflected to the output Value incrementing A decrementing MULTIFUNCTION GENERATOR 4 3 Basic Settings and Operations 0 000 deg has closed Mode Phase b w selected The current frequency is displayed Mode Phase Continuous Sine 1 000 000 000 00 Hz 0 000 Y 0 000 deg opens and a value is input Continuous changed and the Mode Phase Y Check input field closes 5 Press the ENTER key to close the input field
80. comes operable E Power off procedure The display goes off L QQQ QQG man ne Press the power switch The power is switched off standby state Power on state WF1973 WF1974 a A 4 BASIC OPERATION 4 1 2 Restoration of settings at power on When the power is switched on off with the power switch the settings before the previous time the power was switched off are restored when the power is switched on again The output on off settings at power on can be set on the Utility screen ep 41 However if the power supply to the equipment is directly cut off while the equipment s power is on the settings are set to the contents of setting memory 1 when the equipment is powered on again a Restoration of settings when power switch is switched on off while power supply is connected The most general case is illustrated below LINE LINE Power supply connected Power supply connected gt Press the power switch Power on state The power is switched off standby state US LINE gt 3 LINE Power supply reconnected EF Power supply disconnected Even if the power supply is disconnected in the power off state this has no influence on the next restore The power remains off The power remains off operation standby state sy LINE Power supply connected L ST gt Press the power switch The power is switched on former se
81. d high resolution of 0 0001 e Pulse with variable leading edge time and trailing edge time e Various oscillation modes e Continuous oscillation e Modulation FM FSK PM PSK AM DC offset modulation PWM e Sweep Frequency phase amplitude DC offset duty e Burst oscillation Auto burst trigger burst gate oscillation triggered gate oscillation e Sequence oscillation Variable waveform frequency phase amplitude DC offset square wave duty constant value linear interpolation jump repeat hold branch e Sequence function for easy test waveform creation and adjustment Flexible waveform creation possible through combination with standard parameter variable waveforms Frequency phase amplitude etc can be rapidly changed and swept Intuitive user interface through use of high resolution QVGA TFT color LCD e Two channel ganged function with 2 phases constant frequency difference constant frequency ratio and differential output only WF1974 Floated from housing for each channel to reduce effect of ground loop e Multiple phase oscillator can be configured by synchronizing multiple units e USB and GPIB interfaces provided Thin and lightweight Height of approx 9 cm weight of approx 2 1 kg WF1973 WF 1974 E a 1 OVERVIEW 1 2 Operating Principles MW WF1973 block diagram ANALOG O CO EXTERNAL HiV MODULATION A i MOD ADD i IN EXTERNAL l i l i a FCTN o0 OUT ISO
82. dge time definitions and limitations The pulse width leading edge time and trailing edge time are defined as shown in the following figure l l Leading edge Trailing edge time time Period gt gt However the setting ranges of the pulse width leading edge time trailing edge time and frequency are mutually limited as follows If the following limitations are not met by the frequency or pulse width setting the leading edge time and trailing edge time are adjusted first and the pulse width is adjusted next WE Leading edge time and trailing edge time limitations The ranges of the leading edge time trailing edge time and frequency or cycle are limited as follows Largest of 0 01 of period or 15 ns lt Leading edge time Largest of 0 01 of period or 15 ns lt Trailing edge time For example the leading edge time and trailing edge time at 1 kHz are limited to 100 ns or more WE Pulse width leading edge time and trailing edge time limitations The ranges of the pulse width time leading edge time trailing edge time and frequency or cycle are limited as follows If the pulse width is set with duty the value converted to time is used as the pulse width time Leading edge time Leading edge time x 0 85 lt ge lt Period x 0 85 trailing edge time time trailing edge time For example when the leading edge time and the trailing edge time are each set to 100 ns at 1 kHz the pulse width t
83. dition WF1973 WF1974 4 BASIC OPERATION 4 Once the external addition settings have teal been completed select OK in the lower Valid part of the window and then press the ENTER key to apply the external addition setting change and close the window Select OK and To not change the external addition then press the setting select Cancel in the lower part of ENTER key the window and then press the ENTER key or press the CANCEL key c When the desired external addition condition cannot be selected NW When the external addition cannot be set on x2 x10 setting External modulation is used To use external addition change the modulation source to the internal source The external addition input terminal is shared with the external modulation input terminal Therefore when an external modulation source is specified for modulated oscillation except FSK and PSK external addition cannot be used The external addition setting is always Off at such time Similarly when external addition is used external modulation cannot be used except FSK PSK E When the external addition gain cannot be set to the desired value The external addition gain is determined by the output voltage range To set the external addition gain to X2 set the amplitude and DC offset so that the output voltage range is 4 V To set the external addition gain to X10 set the amplitude and DC offset so that the output voltage range is
84. e is set to Ext external input the modulation signal to the external modulation addition input terminal In the case of 1 V input the prescribed peak duty deviation results EN MULTIFUNCTION GENERATOR 4 8 Sweep Setting and Manipulation 4 8 Sweep Setting and Manipulation 4 8 1 Sweep types The following five types of sweep can be done e Frequency sweep p 95 e Phase sweep ep 97 e Amplitude sweep p 99 DC offset sweep ep 101 e Duty sweep ep 108 4 8 2 Screen for sweep setting and manipulation This subsection describes the screen configuration used in common for the sweep oscillation mode The settings and manipulations are done on the Oscillator setting screen The Oscillator setting screen is displayed as Oscillator in the top left part of the screen When another screen is displayed press the MENU key to display the top menu then select Oscillator and press the ENTER key a Setting the oscillation mode to sweep Set Mode oscillation mode to Sweep on the Oscillator setting screen The Select Sweep in oscillation mode is switched to sweep as a Mode and then press the ENTER result key In the sweep oscillation mode the setting screen consists of three pages which can be switched with the NEXT key b 1st page of setting screen Screen for setting the basic parameters These are the common setting items that are common to all the oscillation modes Some of the settings may be inva
85. e ENTER button to display en pararme valle the parameter variable waveform selec waveform name is displayed tion screen 2 The parameter variable waveform setting and various parameter settings can be done in the parameter variable waveform selection screen Oscillator gt PWF Select is displayed in the top left part of the parameter variable waveform selection screen Waveform polarity amplitude range Waveform Variable parameters of waveform LN Waveform graph Applies the changes and exits the selection screen Returns the variable A E 2 parameter values to Discards the changes and the initial values exits the selection screen Due to the large number of parameter variable waveforms they are categorized into a number of different groups First select the desired group in the Group field Next in the Waveform field set the desired waveform from the various waveforms listed within the selected group Set the polarity and amplitude range of the waveform with the polarity amplitude range icon These settings are done independently for each waveform and can be changed even when the selection screen has been exited Each waveform has up to 5 specific parameters Set the desired value for each one of these parameters WF1973 WF 1974 65 4 BASIC OPERATION To return the variable parameter values to their initial value press the Reset soft key The change is instantly reflected to the output waveform and th
86. e prescribed peak DC offset deviation results WF1973 WF 1974 8 A 4 BASIC OPERATION 4 7 11 Setting PWM The duty of square waves and pulse waves varies according to the instantaneous value of the modulation signal For the manipulation methods that are common with the modulation setting screen refer to pp 70 and 72 a PWM example The duty of the output signal grows larger when the modulation signal swings to the positive side Modulation sync signal during internal modulation Modulation signal Output signal b Selecting PWM When Mode modulation mode is set to Modulation modulation set Type Select PWM in modulation type on the 2nd page of the p Type and then setting screen to PWM PWM press the ENTER key c Waveforms for which PWM is not possible PWM is possible only for square waves and pulse waves PWM is not possible for other waveforms d Setting items required for PWM Set Duty carrier duty on the 1st page of the setting screen Set Deviation peak duty deviation on the 2nd page of the setting screen The output duty varies in the range of carrier duty peak duty deviation When the pulse wave is used the pulse width of the carrier is fixed to the duty setting and cannot be set with time If Source modulation source is set to Int internal set ModFctn modulation waveform and ModFreq modulation frequency If Source modulation sourc
87. e shape of the set waveform is displayed in graph form For details on the variable parameters 1 DETAILS OF PARAMETER VARIABLE WAVEFORMS in the Application Instruction Manual 3 To apply the changes and quit the selection screen press the OK soft key To discard the changes and quit the selection screen press the Cancel soft key The changes can also be applied and the selection screen exited by pressing a basic parameter shortcut key Y Check The waveform may disappear according to the parameter settings If you do not know how to restore the waveform display press the Reset soft key This will return each parameter value to the factory default The polarity and amplitude range remain unchanged 66 MULTIFUNCTION GENERATOR 4 6 Using Arbitrary Waveforms 4 6 Using Arbitrary Waveforms a Outputting an arbitrary waveform Select ARB arbitrary waveform in the Continuous Sine a Fctn field and then press the 1 000 000 00 Hz Ayr ENTER key 0 100 Vp p mg 2 The currently set arbitrary waveform is 0 000 Y output 0 000 deg Like for other waveforms the polarity and Select ARB and then press the amplitude range of the waveform can also ENTER key be changed b Changing the waveform of an arbitrary waveform Set the waveform Polarity amplitude 1 When the waveform is set to ARB to ARB range icon arbitrary waveform the Select button is Select the Select displayed to the righ
88. ed to a 3 prong power supply outlet this product is grounded automatically This product does not come with a 3 prong to 2 prong conversion adapter When using a separately sold 3 prong to 2 prong conversion adapter be sure to connect the grounding wire of the adapter to the grounding terminal next to the outlet b Power supply conditions Voltage range 100 V AC to 230 V AC 10 250 V or lower Frequency range 50 Hz 60 Hz Power consumption WF1973 50 VA or lower WF 1974 75 VA or lower 6 MULTIFUNCTION GENERATOR 2 4 Calibration c Power supply connection procedure 1 Check that the commercial power supply voltage to be connected is within the voltage range specified for the equipment 2 Connect the power cord to the power supply inlet on the rear panel of the equipment 3 Connect the power cord plug to the 3 prong power supply outlet The withstand voltage of the main unit proper is 1500 Vrms AC N CAUTION The power cord supplied with this equipment is designed to be used for this equipment only Do not use this power cord for other equipment or purposes 2 4 Calibration This equipment should undergo performance testing about once a year as a guideline although this depends on the usage environment and usage frequency Moreover when using this equipment to perform important measurements and tests the execution of a performance test immediately before 1s recommended Performance testing of this equipment should be
89. ed with the recalled setting contents 124 MULTIFUNCTION GENERATOR 5 2 Recalling Settings b Changing the setting memory name Recall Memory Press the 1 Similarly to the saving operation after Rename soft setting the setting memory number press KEY eS one the Rename soft key to open the setting setting memory name input field memory name input field 1 000 000 000 Hz 0 100 0 p p 0 000 0 Y 2 The name input method is the same as in the case of the Store Memory screen p 123 Delete Insert WF1973 WF1974 E 25 6 LIST OF INITIAL SETTINGS The following initial settings are restored by executing Reset setting initialization on the Utility screen These items are also the targets to be saved in the setting memory except for the output on off setting The arbitrary waveform memory setting memory sequence memory user defined unit definition output setting at power on panel operation setting and remote setting are not initialized Although the user defined unit definition is not initialized it is the target to be saved in the setting memory E Output setting Oscillation mode Waveform Polarity and amplitude range Frequency Amplitude DC offset Range Load impedance Phase Output Sync sub output E Waveform Square wave duty Pulse wave duty Pulse wave leading edge time trailing edge time Ramp wave symmetry Parameter variable waveform E Modulation Modulatio
90. either 1 32 768 of the sweep time or 8 33 ns whichever is longer Therefore even if the marker value is changed finely the time width may not always change E When X Drive is selected A signal of 0 to 3 V open corresponding to the sweep value is output from the sync sub output terminal The voltage changes linearly proportionally to the elapsed sweep time Even if Log OneWay or Log Shuttle is selected as the log for the sweep function during frequency sweep the voltage changes linearly proportionally to the elapsed sweep time When the signal during sweep execution is observed with an X Y display oscilloscope or X Y recorder it can be used as the X axis signal 92 MULTIFUNCTION GENERATOR 4 8 Sweep Setting and Manipulation The relationships between the sweep values and the various signals are shown in the following figure When stop value lt start value the slope of the sweep X drive output is the opposite of that in the figure Continuous sweep One way Shuttle A Stop value d y Stop value Marker value Marker value Sweep valie Tee del EA t Ten WEE Start value Start value Y Low during the 1st half Of interval Sweep sync Tomstar Low from start value to stop value signal SwpSync marker disabled value to stop value Sweep sync signal Low from p Lowfom m SwpSync Mkr start value to start value to marker enabled marker value marker value CH i
91. el with a value p 112 116 MULTIFUNCTION GENERATOR 4 9 Burst Setting and Manipulation k Noise gate oscillation Noise having no cycle the gate on period is the oscillation period and the gate off period is the oscillation stop period Further since noise has no phase the stop level setting 1s always enabled The next figure is an example of noise gate oscillation when the stop level is 0 Gate signal Gate on Gate off Gate on Burst sync signal Oscillation Stop Oscillation Signal output Stop level 0 WF1973 WF1974 117 4 BASIC OPERATION 4 9 5 Triggered gate oscillation Triggered gate oscillation is gate oscillation that switches the gate on off each time a trigger is received The settings and manipulations are done on the Oscillator setting screen Oscillator is displayed at the top left of the Oscillator setting screen When another screen is displayed press the MENU key to display the top menu then select Oscillator and press the ENTER key a Triggered gate oscillation example The following example is for oscillation start stop phase 30 oscillation stop unit 1 cycle stop level off After the gate signal becomes off oscillation stops once the oscillation start stop phase is reached Trigger signal Internal gate signal Gate on Gate off Gate on Gate off Output signal 7 d Oscillation start stop phase 30 b Setting the oscillatio
92. electable for Sync Sub Output Oscillation Mode Selectable Output Signal 50 duty TTL level logic signal that rises at zero phase position of reference phase of waveform output hereafter reference phase sync signal The phase relationship with waveform output can be changed p 45 Modulation mode with Reference phase sync signal internal modulation Internal modulation signal 3 V to 3 V open source TTL level logic signal synchronized with internal modulation signal ep 74 Sweep oscillation mode Reference phase sync signal p 92 Sweep X drive signal 0 V to 3 V open e TTL level logic signal synchronized with sweep marker signal mixing possible Burst oscillation mode Reference phase sync signal pp 108 111 115 120 TTL level logic signal synchronized with burst oscillation Sequence oscillation Reference phase sync signal mode 6 2 Basics in the Application Instruction Manual TTL level logic signal synchronized with sequence step NW Output characteristics Output voltage TTL level low 0 4 or lower high 2 7 V or higher 3 V to 3 V open O V to 3 V open Load impedance 50 Q or higher recommended Signal GND Same potential as same channel waveform output insulated from housing 42 Vpk max WF 1974 Insulation also between channels 42 Vpk max WF1973 WF 1974 3 PANELS AND I O TERMINALS 3 2 3 External modulation addition input MOD ADD IN WF1973
93. ert the user to potential danger and refer him her to the instruction manual Electric Shock Danger Symbol This symbol indicates locations that present a risk of electric shock under specific conditions Warning Symbol This symbol indicates information for avoiding danger to human life or bodily injury while handling this product Caution Symbol This symbol indicates information for preventing damage to the product when handling it This symbol indicates that the external conductor of the connector is connected to the case This symbol shows that the external conductor of the connector is insulated from the case It shows however that the potential difference from the grounding potential is restricted to 42 Vpk or lower for safety Since this product is grounded when used the potential of the case equals the grounding potential To help ensure environmental protection use a professional industrial waste contractor to dispose of this product A battery is not used for this product SIV MULTIFUNCTION GENERATOR e Salely o AA II CONTO ET V FIQuUres and Ee UE VIII Ll OVERVIEW erronea EE EE E E EE E 1 kT FCM CS coires E E E E 1 1 2 Operating PRINCI ISS ER 2 2 PREPARATIONS BEFORE USE manera 4 21 Checking Before EE 4 ZZ ET e E 5 2 3 Grounding and Power Supply Copnnechon 6 2A E e een EE 7 3 PANELS AND I O TERMINAL 8 3 1 Panel Components and COperatons 8 Orel FRONT PANEL VV UOT E 8 3 1 2 Rear panel Of
94. es as these may deform or peel the finish d Rack mounting method When provided with a rack mount adapter option this equipment can be mounted on a 19 inch IEC EIA standard rack or JIS standard rack Either one unit or two side by side units can be mounted First attach the rack mount adapter to the main unit and then mount the main unit into the rack For the rack mount adapter handling method refer to the manual included with the adapter When rack mounting the main unit observe the following cautions e Be sure to install rails in the rack to support the equipment e Mounting the equipment into a fully enclosed rack may cause it to fail due to rising temperature Be sure to provide sufficient ventilation openings and forcibly cool the inside of the rack with fans For external dimensions for rack mounting refer to Inch rack mounting dimensions for 1 unit ep 149 Inch rack mounting dimensions for 2 units ep 150 Millimeter rack mounting dimensions for 1 unit ep 151 Millimeter rack mounting dimensions for 2 units ep 152 2 3 Grounding and Power Supply Connection a Grounding Be sure to ground the equipment This product uses a line filter Be sure to ground this product Otherwise an electric shock may occur To prevent electric shock be sure to safely implement grounding such that ground resistance is 100 2 or lower When a 3 prong power plug that includes a protective ground contact is connect
95. f the waveform WF1973 WF 1974 53 4 BASIC OPERATION 4 4 11 How to use auto range range hold for the output voltage Since auto range is set as part of the initial settings the optimum range is automatically selected according to the amplitude and DC offset including settings with high level and low level A transient voltage is generated when the range is changed but control is performed so that overvoltage does not result If the transient voltage generated as the result of range switching is not desirable the range can be fixed However reducing the amplitude while the range is fixed lowers the amplitude accuracy and waveform quality a Setting method Select the range A Select the range icon on the right of the Continuous icon Se Se D amplitude display to display the current 1 000 000 000 ON E en range under that icon The current range 20 000 a CO is displayed as a combination of maximum 0 000 Y SA i output voltage Vp p and the amplitude 0 000 deg The current attenuator oe Press the ENTER key to open the displayed when the range icon is range processing choice list B ss selected 2 Auto range is selected when Auto is Continuous Sine EN selected from the choice list and when 1 000 000 000 00 Hz Hold is selected the range is fixed to the 20 000 Vp p range at that time The respective range 0000 Y Gaia icons are displayed as Auto and Hold 0 000 deg Z processing Select the desi
96. ffset varies according to the instantaneous value of the modulation signal For the manipulation methods that are common with the modulation setting screen refer to pp 70 and 72 a DC offset modulation example DC offset of the output signal grows larger when the modulation signal swings to the positive side Modulation sync signal during internal modulation Modulation signal a EE EE EE z e HIT AN NWT Tt Output signal Me TALE EEE it DC offset setting peak DC offset deviation When Mode oscillation mode is set to Modulation modulation set Type Select OFSM in Er e aer WEEN type on the 2nd page of the CE BD press the ENTER setting screen to OFSM DC offset key modulation c Waveforms for which DC offset modulation is not possible None DC offset modulation 1s possible for all waveforms d Setting items required for DC offset modulation Set lOffset carrier DC offset on the 1st page of the setting screen Set Deviation peak DC offset deviation on the 2nd page of the setting screen The output DC offset varies in the range of carrier DC offset setting peak DC offset deviation If Source modulation source is set to Int internal set ModFctn modulation waveform and ModFreq modulation frequency If Source modulation source is set to Ext external input the modulation signal to the external modulation addition input terminal In the case of 1 V input th
97. for the output Note that the phase does not vary in the phase deviation range If Source modulation source is set to Int internal set ModFreq modulation frequency If Source modulation source is Ext external set the trigger polarity and input the modulation signal TTL level to the external trigger input terminal If the polarity is set to High positive the phase deviation is zero during low level input and the specified phase deviation is output during high level input and vice versa if the polarity is set to Low OH MULTIFUNCTION GENERATOR 4 7 Modulation Setting and Manipulation 4 7 8 Setting AM The output amplitude changes according to the instantaneous value of the modulation signal For the manipulation methods that are common with the modulation setting screen refer to pp 70 and 72 a AM example The amplitude of the output signal grows larger when the modulation signal swings to the positive side Modulation sync signal during internal modulation Modulation signal Output signal Amplitude setting value Vp p 2 x Amplitude setting value Vp p 2 x 1 modulation depth 100 1 modulation depth 100 b Selecting AM When Mode oscillation mode is set to Modulation modulation set Type Ge e modulation type on the 2nd page of the l T d th ae da ENTER O eco AA key c Waveforms for which AM is not possible AM is not possible for
98. ge is FS for sine wave Amplitude change When the amplitude is changed the waveform amplitude changes in a symmetric manner with the DC offset position as reference Normally in the case of a waveform that oscillates between the two polarities with zero as the center 1t is convenient to set the amplitude range to FS Amplitude E Example of Gaussian pulse with amplitude range of 0 FS change When the amplitude is changed only the waveform amplitude is changed at the peak on the positive side using the DC offset position as reference The amplitude is changed using the bottom of the waveform as reference Normally in the case of a unipolar DC offset waveform it is convenient to set the amplitude range to 0 FS or FS O If the amplitude range is set to FS 0 the amplitude changes using the top of the waveform as reference Gaussian pulse is a waveform that is included in parameter variable waveforms d Limitation through amplitude range If the amplitude range is FS 0 or 0 FS the maximum amplitude is one half of FS If the amplitude range is FS 0 or 0 FS this is equivalent to only the lower half or the upper half of the waveform memory being used Therefore the amplitude resolution is reduced by 1 bit compared to FS e The amplitude setting when the amplitude setting is FS is Vp p and in the case of FS O or O FS it is Vpk In either case the amplitude refers to the peak to peak size o
99. hase Phase zero position zero position zero position zero position zero position If it 1s preferable for the phase zero position to be at the bottom of the waveform use the bottom referenced ramp wave of a parameter variable waveform 1 2 7 Other waveform group in the Application Instruction Manual Example of 20 and 80 symmetry for bottom referenced ramp wave Phase zero position 64 MULTIFUNCTION GENERATOR 4 5 Using Parameter Variable Waveforms 4 5 Using Parameter Variable Waveforms a Outputting a parameter variable waveform Select the PWF parameter variable waveform in the Fctn field and then press the ENTER key The waveform that is currently set as the Continuous Sine 1 000 000 000 00 2t 0 100 Vp p mi ad dl parameter variable waveform is output id Like for other waveforms the polarity and Select PWF and then press amplitude range of the waveform can also Ce the ENTER key be changed b w Changing the waveform of a parameter variable waveform 1 When the waveform is set to PWF Set the waveform Polarity amplitude to PWF range icon parameter variable waveform the Select button is displayed to the right of B EE the polarity amplitude range icon Sciect aa When this button is selected th t ZS press the ENTER en this button is selected the currently key selected parameter variable waveform name is displayed When the Select button is selected Press th
100. he Start soft key h To stop modulation Stop soft key Modulation can be paused When the Stop soft key is pressed during modulation modulation stops and the carrier signal is output without being modulated The oscillation mode remains the modulated oscillation mode WF1973 WF 1974 73 4 BASIC OPERATION i To output modulation sync signal modulation waveform signal Sync output setting Perform the sync output setting with SyncOut sync output on the 2nd page of the setting screen The sync output setting can be chosen from the following three Signal synchronized with reference phase of waveform Syncl Signal synchronized with internal modulation waveform ModSyncl Internal modulation waveform ModFctn WE When Sync is selected A TTL level signal that rises at the reference phase of the waveform 1s output from the sync sub output terminal E When ModSync is selected A TTL level signal synchronized with the internal modulation waveform is output from the sync sub output terminal This is a 50 duty square wave that rises at the zero phase position of the internal modulation waveform If the internal modulation waveform is noise it is fixed to low level When the signal being modulated is observed with an oscilloscope it can be used as the trigger signal for the oscilloscope E When ModFctn is selected The internal modulation waveform is output from the sync sub output terminal The
101. he setting screen One of the following four settings can be chosen e Signal synchronized with reference phase of the waveform Sync e Signal synchronized with sweep SwpSync e Signal combining marker signal with signal synchronized with sweep SwpSync Mkr e X drive signal of sweep X Drivel E When Sync is selected A TTL level signal that rises at the reference phase of the waveform 1s output from the sync sub output terminal E When SwpSync is selected A TTL level signal synchronized with sweep is output from the sync sub output terminal This signal changes from high to low at sweep start When the signal being swept is observed with an oscilloscope it can be used as the trigger signal for the oscilloscope E When SwpSync Mkr is selected The leading edge of the sweep sync output is used as the marker signal During the interval from the sweep start value to the marker value the sweep sync output 1s low The sweep sync output does not change over the shuttle sweep course It is possible to know the timing at which the signal during sweep execution passes the marker value Note that the time width when the sweep sync output 1s low is limited as follows The time width is limited to about 0 05 to 99 95 of the sweep time Therefore when the marker value is close to the start value or the stop value the time width will not change even if the marker value is changed The resolution of the time width is limited to
102. ime can vary in the range of 170 ns to 999 83 us WF1973 WF1974 63 4 BASIC OPERATION 4 4 16 Setting the ramp wave symmetry The waveform is assumed to be set to Ramp ramp wave For the waveform setting method ep 44 The symmetry setting unit is only Setting and display with time is not possible a Symmetry setting method 1 Select the Symm field and then press the Continuous Ramp ENTER key to open the symmetry 1 000 000 000 00 Hz input field 0 100 Vp p Re HEES Even if there are several setting screens 0 000 Y the Symm field is always displayed on 0 000 deg the first page oe GO CT Symmetry input w SE field 2 Select the digit to be changed with the GD left right arrow keys and increment decrement the value with the U up down arrow keys or the modify knob The change is instantly reflected to the output Alternatively enter a numeric value using the O C9 numeric keypad Then press the ENTER key or the unit key soft key to set the input value and reflect it to the output If the ENTER key is used the unit is set to b Relationship between symmetry and waveform One waveform cycle changes as follows according to the symmetry setting A symmetry is expressed by the amount of the ratios of the first and second rises Except in the case of 0 symmetry the phase zero position is fixed to the 0 amplitude center position 0 20 50 80 100 4 AC LON Phase Phase Phase P
103. ined unit etc Amplitude is used as an example below The frequency and pulse width can be changed in a similar manner 1 Select amplitude and then press the Continuous Sine ENTER key to open the input field 1 000 000 000 00 Hz 2 228 Vo pi T E ie enren C828 TEDS O Le 8 deg The input field opens 2 Press the Unit soft key and the cursor will Continuous sine move to Vp p 1 000 000 000 00 Hz The right arrow key can also be used to 2 828 Yoo move the cursor to Vp p moves to Vp p when Unit is pressed OOO OC 3 The unit can be changed to Vrms dBV or a user Unit change defined unit with the up down arrow keys or the modify knob in the case of sine wave load impedance High Z Even when the display unit is changed the output value remains unchanged D or Oscillator Continuous Sine 1 000 000 000 00 Hz Continuous Sine M 1 000 000 000 00 Hz 0 999 8 VR J 1 0 999 UB 0 00 2 Auto High Z S Eet a 0 000 deg Vrms display dBV display 0 000 deg Also refer to the following sections e Changing the frequency and period settings p 45 e Changing the amplitude unit Vp p Vpk Vrms dBm dBV p 48 e Changing the pulse width time and duty settings p 61 Setting the user defined unit 7 USING USER DEFINED UNITS in the Application Instruction Manual WF1973 WF 1974 Ea 4 BASIC OPERATION 4 3 6 CH1
104. ing Power On Output Sets the output on off setting at power on p 41 Phase synchronizationld Sync Performs inter unit synchronization during multiple unit synchronization connection and inter channel synchronization of the WF1974 3 3 Phase Synchronization Between Channels and 4 SYNCHRONIZING MULTIPLE UNITS in the Application Instruction Manual User defined unit setting User Unit Sets user defined units 7 USING USER DEFINED UNITS in the Application Instruction Manual WF1973 WF 1974 EN 4 BASIC OPERATION Remote setting Remote Selects GPIB USB and sets the GPIB address The USB ID is also displayed e 8 1 Selecting Remote Interface Remote in the Application Instruction Manual Display setting Display Sets the backlight of the display 8 2 Display Settings Display in the Application Instruction Manual Modify direction setting Modify Direction Sets the movement direction when the modify knob is turned e 8 3 Modify Knob and Modify Direction Setting Modify Direction in the Application Instruction Manual Operation sound setting Sound Sets the operation sound e 8 4 Operation Sound Setting Sound in the Application Instruction Manual Self check Self Check Performs internal status check 8 5 Self Check Self Check in the Application Instruction Manual Internal information display Information Displays the firmware version and latest calibrat
105. ing other than Auto auto and then set so that no trigger or gate signal is input ep 111 To set continuous oscillation change Mode oscillation mode to Continuous h To output burst sync signal Sync output setting Set burst sync signal with SyncOut sync output on the 2nd page of the setting screen One of the following two settings can be selected e Signal synchronized with the reference phase of the waveform Sync e Signal synchronized with burst oscillation BrstSync E When Sync is selected A TTL level signal that rises at the reference phase of the waveform is output from the sync sub output terminal E When BrstSync is selected A TTL level signal synchronized with the burst oscillation is output from the sync sub output terminal As shown in the following figure this signal is low during oscillation and high during oscillation stop When the signal during burst is observed with an oscilloscope it can be used as the trigger signal for the oscilloscope Burst sync signal S 9 Oscillation Stop Oscillation Stop Output signal i Usage of stop level The level when oscillation is stopped is normally set with the oscillation start stop phase but 1t can also be set independently from that with a proportion of the amplitude full scale Set StpLvl stop level on the 2nd page of the setting screen to On and set the level with a value ep 112 KO MULTIFUNCTION GENERATOR 4 9 Burst Setting and M
106. ing to the output voltage range setting and the external addition input setting Sp 04 p 57 WF1973 WF 1974 49 4 BASIC OPERATION 4 4 8 Setting DC offset a Setting method 1 Press the OFFSET shortcut key to Continuous Sine ES open the DC offset input field 1 000 000 000 00 Hz Alternatively select the Offset field and 0 100 Vp p Aut mmz then press the ENTER key to open ann the DC offset input field Even if there are several setting screens the Offset field is always displayed on the first page If Low is displayed in the Offset field and the low level instead of the offset is displayed press the OFFSET key once more to switch to the DC offset display 2 Select the digit to be changed with the D gt left right arrow keys and increment decrement the value with the U up down arrow keys or the modify knob The change is instantly reflected to the output Alternatively enter a numeric value using the O C9 numeric keypad Then press the ENTER key or one of the unit keys soft keys to set the input value and reflect it to the output b AC DC limitation The maximum value for AC amplitude DC offset is limited to 10 V open For example if the AC amplitude is 5 Vp p open the DC offset range is limited to the range from 7 5 V open to 7 5 V open The maximum value varies according to the output voltage range setting and the external addition input setting Sp 54 p 57 EN MULTIFUN
107. ingle shot sweep Internal and external can be chosen as the trigger source p 90 Sweep function SwpFctn This 1s the sweep form One way and shuttle can be chosen from Linear and log are also possible if the sweep type is frequency p 86 Sweep marker value Marker This is the sweep marker value ep 92 EN MULTIFUNCTION GENERATOR 4 8 Sweep Setting and Manipulation d 3rd page of setting screen Screen for complementary settings for sweep The figure is an example that shows frequency selection as the sweep type Stop level of gated single shot sweep Oscillator Indicates that the mm 3rd page is Sweep control with displayed multi 1 O connector Gated sweep oscillation stop unit PATA oe ar a ee wo l Press the NEXT key to display l the 1st page Stop level StpLvl This is the signal level when gated single shot sweep oscillation is stopped It can be set either to Off or On for setting the level Normally Off is set p 89 External control with multi I O connector ExtCtrl Enables disables external control with the multi I O connector ep 94 Oscillation stop unit for gated single shot sweep OscStop This is the oscillation stop unit for gated single shot sweep The unit can be selected from 1 cycle and 1 2 cycle Normally the unit is set to 1 cycle ep 89 Sync output SyncOut This is the output signal from the sync sub output terminal Waveform reference phase sync sweep sync s
108. input field top left of the first page When Period is displayed in the Freq field and the period and not the frequency is displayed either press the FREQ key or press the Freq soft key to switch to the frequency display 2 Select the digit to be changed with the D gt left right arrow keys and increment decrement the value with the U up down arrow keys or the modify knob The change is instantly reflected to the output Alternatively enter a numeric value using the O C9 numeric keypad Then press the ENTER key or one of the unit keys soft keys uHz mHz Hz kHz MHz to set the input value and reflect it to the output If the ENTER key is used the unit is set to Hz 44 MULTIFUNCTION GENERATOR 4 4 Setting Methods for Main Items 4 4 5 Performing setting with period Settings can be performed using the period instead of the frequency The frequency display can be changed to the period display with one of the following two methods O Changing to period display with Freq Period soft key When the frequency input field 1s open and the current frequency is displayed the Period soft key is displayed Press this key to open the period input field and change the item display from Freq to Period The Period soft key changes to Freq When the Freq key is pressed the frequency input field opens again O Changing to period display by pressing the FREQ key twice While the frequency input
109. ion date 8 6 Product Information Display Information in the Application Instruction Manual Channel mode setting Channel Mode WF1974 only Sets the type of 2 channel ganged operation Independent 2 phase constant frequency difference constant frequency ratio and differential output can be selected from 3 4 Maintaining Both Channels to Same Frequency 2 Channel Ganged Operation 2 Phase 3 5 Keeping Frequency Difference Constant 2 Channel Ganged Operation 2 Tone 3 6 Keeping Frequency Ratio Constant 2 Channel Ganged Operation Ratio and 3 7 Obtaining Differential Output 2 Channel Ganged Operation Differential in the Application Instruction Manual Inter channel parameter copy Parameter Copy WF1974 only Copies the settings between channels 3 1 Copying Settings Between Channels in the Application Instruction Manual 2 channel same value setting On Off Both WF1974 only Switches on off setting of the same value for both channels 3 2 Unifying Settings of 2 Channels in the Application Instruction Manual 40 MULTIFUNCTION GENERATOR 4 3 Basic Settings and Operations 4 3 8 Restoring the initial settings The initial settings can be restored from the Utility screen The initial settings that are restored consist of continuous oscillation sine wave 1 kHz 0 1 Vp p open and output off For a list of the initial settings p 126 1 Press the MENU key to dis
110. ion mode also same modulation type during modulated oscillation and same sweep type during sweep oscillation e Applicable to standard waveform other than noise and DC and arbitrary waveform Burst gated single shot sweep not possible Same value setting same manipulation Yes Frequency difference setting range 0 00 uHz to less than 30 MHz 0 01 uHz resolution CH2 frequency CH1 frequency Frequency ratio N M setting range 1 to 9 999 999 for each of N and M N M CH2 frequency CH1 frequency Phase synchronization Automatically executed during channel mode switching Time difference between channels during 2 phase 20 ns or less 10 ns or less typ Condition Same waveform sine or square WF1973 WF1974 143 7 SPECIFICATIONS 7 13 Synchronous Operation of Multiple Units Connection Connection method 1 Master unit Slave unit Slave unit Slave unit 10MHz REF IN OUT External reference use possible T divider T divider termination resistor Connection method 2 Master unit Slave unit Slave unit External reference use possible IS Connection cable Cable type Coaxial cable with characteristic impedance of 50 Q with BNC connector RG 58A U etc Cable length limit 1 m or less between units total length of 3 m or less Maximum number of connectable units Connection method 1 6 units including master unit Connection method 2 4 units including master unit Phase synchronization operation Manua
111. ion signal is negative the polarity of the output signal is inverted Modulation sync signal during internal modulation Modulation signal Output signal Amplitude setting value Vp p x modulation depth 100 b Selecting AM DSB SC When Mode oscillation mode is set to Modulation modulation set Type a AS SEN modulation type on the 2nd page of the mural Type and then SETE gt SL press the ENTER setting screen to AM SC AM DSB key SC c Waveforms for which AM DSB SC is not possible AM DSB SC is not possible for DC d Setting items required for AM DSB SC Set Amptd carrier amplitude on the 1st page of the setting screen Set Depth modulation depth on the 2nd page of the setting screen The output amplitude varies in the range of carrier amplitude setting value Vp p x modulation depth 100 When the modulation depth is 100 the maximum output amplitude envelope value is equal to the carrier amplitude setting value If Source modulation source is set to Int internal set ModFctn modulation waveform and ModFreq modulation frequency If Source modulation source is set to Ext external input the modulation signal to the external modulation addition input terminal In the case of 1 V input the prescribed modulation depth results EN MULTIFUNCTION GENERATOR 4 7 Modulation Setting and Manipulation 4 7 10 Setting DC offset modulation DC o
112. iple WF1973 WF1974 units Connect the frequency reference output of the master unit when multiple units are combined in synchronous connection or the master WF1973 or WF1974 to the external 10 MHz frequency reference input of the WF1973 or WF1974 Set the frequency setting of each unit to the same value Also enable external frequency reference setting for the slave units and perform phase synchronization with the master unit A SYNCHRONIZING MULTIPLE UNITS in the Application Instruction Manual The frequency accuracies of the connected WF1973 and WF1974 units are all the same as that of the master unit An external frequency standard can also be used for the master unit W Input Characteristics DAA Maximum allowed input Input impedance 1kQ AC coupled WF1973 WF1974 E DR 3 PANELS AND I O TERMINALS 10 MHz 0 5 50 kHz Sine or square 50 5 duty Insulated from housing and each channel waveform output 42 Vpk max 3 2 6 Frequency reference output REF OUT WF1973 WF1974 S0H2 60Hz 50VA MAX MODEL SERIAL NO NF Corporation MADE IN JAPAN s E Cen A A O D RY USB cH CH2 A GPIB u RIRS em gt MN NES FS lS d a 1 WM ieee LON BEER EOS Y y V J A J WY Y A SZ ua y ES N J 8 eS Y ii Uj o AN Am El agvox 05 5Vo gt aer 1VP Jon Zin 10kQ L Zin 10kQ Zin 1kQ L Zou Poo MODEL SERIAL NO NF CorPoration MADE IN JAPAN
113. itches the gate on off each time a trigger is received Sp 118 WF1973 WF1974 105 4 BASIC OPERATION 4 9 2 Auto burst Oscillation and stop are automatically repeated with the respectively specified wave number No trigger signal is required Settings and manipulations are done on the Oscillator setting screen Oscillator is displayed at the top left of the Oscillator setting screen When another screen is displayed pressing the MENU key displays the top menu so select Oscillator and then press the ENTER key a Auto burst example The following example is for mark wave number oscillation wave number 3 space wave number oscillation stop wave number 2 oscillation start stop phase 30 stop level off Oscillation start stop phase 30 Oscillation phase continues even during stop my ri Y an my 4 ri D I 1 h Au E L p ZE Foto 1 H 1 li 1 Vo wem en wem wen em wem en wem wes ve I 1 I I 1 I I 1 I I Von I Uni I LI 1 a VI i 1 Mark wave Space wave number 3 number 2 Oscillation Stop b Setting the oscillation mode to auto burst Set Mode oscillation mode to Burst on the Oscillator setting screen The oscilla Select Burst in tion mode is switched to the burst ar Model and then oscillation mode as a result y AE In the burst oscillation mode the setting screen consists of two pages which can be toggled with the NEXT key
114. k phase deviation If Source modulation source is set to Int internal set ModFctn modulation waveform and ModFreq modulation frequency If Source modulation source is set to Ext external input the modulation signal to the external modulation addition input terminal In the case of 1 V input the prescribed peak frequency deviation results WF1973 WF 1974 Ria 4 BASIC OPERATION 4 7 7 Setting PSK This is binary phase shift modulation by which the output phase is offset according to the modulation signal For the manipulation methods that are common with the modulation setting screen refer to pp 70 and 72 a PSK example Since the phase changes suddenly the output signal waveform is non continuous Modulation sync signal during internal modulation Modulation signal during external modulation positive polarity Phase Phase deviation Phase deviation addition deviationzero addition enn Proc Kan e Output signal b Selecting PSK When Mode oscillation mode is set to Modulation set Type modulation type si ed on the 2nd page of the setting screen to press the ENTER PSK PSK key c Waveforms for which PSK is not possible PSK is not possible for noise and DC d Setting items required for PSK Set Deviation phase deviation on the 2nd page of the setting screen The phase deviation zero state and the specified phase deviation state alternate
115. k wave number 006 106 107 space wave number c 000 106 107 start auto burst occoocccnccnnncnnncnnnocnnonnnoss 108 start stop phase coocccoccncccncconcnoncnncnonoso 107 Stop auto burst oocoocccnccnccnnccnncnnncnncnonoso 108 stop level oooconnccnnincnincnoninoncnnnnnnnoninos 108 sync output setting occocccnccnncnnncnniccnneso 108 auto range range hold ee cecc eee eeeeeees 54 B IS I block diagram WE1973 aeee 2 block diagram WF1974 ooonnnnncccncccnnnnannnnncnns 3 A A E EE 25 40 ler sure 105 Ee VE 106 burst mode 006 106 109 113 118 gate oscillation occooccconncnccnncnncccnccnncnno 113 mode sepia cirscis 106 109 113 118 trigger burst o occcccccncnnccnncnnncnnccnncnnnnnnos 109 triggered gate oscillation 118 WIC A e 105 C cn rE T CANCEL key occoncccononcnonccnnnccnnanononicnonacinanaso 35 CHAO KOy uri 38 CONTI sarria 73 91 108 D e E E REA 48 AS AAE A 48 DC offset setting mensa 50 display format switching occcoccnnccncccnccnnos 28 E ENTERRO sisas does 35 external dimensions WF1973 0006 147 external dimensions WF1974 unn 148 external frequency reference 25 39 F FOTN lt lt lt re 44 POTN OUT stent sais 12 features occ cece ceccceeccscceccesccenceeneceseceenceeneeees 1 floating ground connection cccceec eee e ees 19 EREQ KOY A 44 frequency setting coocccncccnc
116. l operation Time difference between units Delay of each channel of nth slave unit in relation to each channel of the master unit 1 lt N Connection method 1 31 ns N 1 x 6 ns 25 ns or less typ Connection method 2 31ns N 1 x31ns 25 ns or less typ Condition Same frequency same phase same wave form sine or square length of connection cable between frequency reference output and external frequency reference input 1 m RG 58A U 7 14 User Defined Units Function Setting and display in arbitrary unit according to the specified conversion expression Setting target Frequency Hz period s amplitude Vp p Vpk DC offset V phase deg duty Conversion expression Setting target value n x m or Togo setting target value n x m Specification of conversion expression and values of n and m Unit character string Up to 4 characters can be set 144 MULTIFUNCTION GENERATOR 7 15 Other Functions 7 15 Other Functions Setting saving capacity 10 settings saved to non volatile memory Remote control GPIB USBTMC SCPI 1999 IEEE 488 2 7 16 Options PA 001 1318 multi I O cable Cable with connector on one end for connection to multi I O connector on rear panel 2 m length Cut off at one end 7 17 General Characteristics Display unit 3 5 inch TFT color LCD I O ground The signal grounds for waveform output FCTN OUT sync sub output SYNC SUB OUT and external modulation addition inpu
117. layed when the polarity Phase amplitude range icon is selected 2 Select the desired polarity and amplitude range from the choice list and then press Continuous N A 1 Norm the ENTER key to set the input 2 Norm 0 FS 0 100 Vp p Wl mes zen rem Al values and reflect them to the output 0 000 Y EN 4 inv FS Alternatively input the numbers 0 000 deg corresponding to the desired polarity and Polarity and l DEET amplitude range displayed in the choice choice list list from the numeric keypad to set these fib values and reflect them to the output b What are the polarity and amplitude range The polarity can be inverted and the amplitude range can be changed to a single polarity for each waveform Examples for a sine wave are shown below Amplitude Range FS OFFS Polarity Normal Norm Inverted Inv In the case of polarity inversion only the waveform is inverted and the DC offset sign of the output remains unchanged Y Check The polarity and amplitude range settings are done independently for each waveform 52 MULTIFUNCTION GENERATOR 4 4 Setting Methods for Main Items c Amplitude range determination method Determine the amplitude range by observing how the waveform changes when the amplitude is changed Under the initial settings the waveform oscillating between the two polarities is set to FS while the unipolar waveform is set to 0 FS E Example when amplitude ran
118. layed in the Duty field CTA ee Geen ES and the pulse width time and not the pulse dout gi width duty is displayed press the Duty soft key if the time input field is open to switch to the pulse width duty display 2 Select the digit to be changed with the JD left right arrow keys and increment decrement the value with the up down arrow keys or the modify knob The change is instantly reflected to the output Alternatively enter a numeric value using the O C9 numeric keypad Then press the ENTER key or the unit key soft key to set the input value and reflect it to the output If the ENTER key is used the unit is set to c Switching the pulse width time and pulse width duty O Pulse width time Pulse width duty When the pulse width time input field 1s open and the current pulse width time is displayed the Duty soft key is displayed Press this key to open the pulse width duty input field and change the item display from Width to Duty The Duty soft key changes to Width WF1973 WF 1974 ei 4 BASIC OPERATION O Pulse width duty Pulse width time When the pulse width duty input field opens and the current pulse width duty 1s displayed the Width soft key is displayed Press this soft key to open the pulse width time input field and change the item display from Duty to Width The Width soft key changes to Duty d Difference between pulse width time setting and duty setting The f
119. lected display format switch tabs are displayed on the left side of the screen ep 27 Cu Switching setting screen pages with the NEXT key modulation sweep and burst oscillation the setting screen consists of two or three pages The screen pages can be switched with the NEXT key Due to the large number of setting parameters in the case of Setting screen page position When there are several setting screen pages an icon display icon indicating which page is displayed appears at the top cen ter of the screen In the example on the left there is a total of two setting screen pages and the icon indicates that the second page is currently displayed Indicates that there are several a setting screen pages which can be switched with the NEXT key NW Soft key display area Displays the functions of the soft keys allocated according to the status If five or more soft keys are allocated W n m is displayed over the right most soft key This indicates that the set of soft keys belonging to the current setting screen extends of m stages and that the set corresponding to the nth stage is currently displayed When the soft key over which W n m is displayed is pressed the next set of soft keys is displayed Indicates that the first of two stages of soft keys is ae displayed When this key is pressed the next stage of soft keys is displayed EN MULTIFUNCTION GENERATOR 4 2 Screen Configura
120. lid depending on the sweep type Set the oscillation mode to Sweep E O ET Indicates that the Nat SO cm om Lo see displayed 1 000 000 000 00 Hz 0 100 0 Vp p me Big 0 000 0 Y 0 000 deg gt TE ES ey E A A l Press the NEXT key to display the 2nd page There are two stages of soft Ml E ee S keys WF1973 WF 1974 83 4 BASIC OPERATION c 2nd page of setting screen Screen for the main sweep settings The figure is an example that shows frequency selection as the sweep type Sweep start value Indicates that the vA m Sweep stop valu gt 2nd page is displayed 1 000 000 00 Hz Sweep al 10 000 000 000 00 Hz Sweep type Single shot gated single A Sweep marker value shot sweep trigger A EE Press the NEXT Sweep key to switch to Sweep function 9 000 000 000 00 Hz 7 the 3rd page Two soft key stages a Sweep type Typel This 1s the type of sweep Frequency phase amplitude DC offset and duty can be chosen from ep 86 Sweep start value Start This 1s the sweep start value Sweep stop value Stop This 1s the sweep stop value Sweep time Time This 1s the transition time from the start value to the stop value Sweep mode SwpMode This 1s the sweep oscillation mode Continuous sweep single shot sweep and gated single shot sweep can be chosen from ep 87 Trigger Trig This is the trigger condition for single shot sweep and gated s
121. llation mode to modulation Oscillation mode setting Continuous On the Oscillator setting screen set TENA Select Mode oscillation mode to Modulation a Ae Modulation in Modulation i Model ahd then This changes the mode to the modulated WEEE press the oscillation mode Burst ENTER key In the modulated oscillation mode the setting screen consists of two pages which can be toggled with the NEXT key b To select the modulation type Modulation type setting The following eight modulation types can be selected in Type modulation type on the 2nd page of the setting screen C D e FM FM p 75 Modulation type e FSK FSK p 76 e PM PM ep 77 ePSK PSK ep 78 e AM AM p 79 AM DSB SC AM SC ep 80 e DC offset modulation OFSM ep 81 e PWM PWM p 82 c To set the carrier condition Set the various parameters of the carrier signal on the 1st page of the setting screen d To set the modulation width The modulation width setting is done on the 2nd page of the setting screen The item name that is displayed is either Deviation Depth or HopFreq depending on the modulation type For details refer to the description of each modulation type e To perform modulation with the internal signal source Set Source modulation source on the 2nd page of the setting screen to Int internal ModFctn internal modulation waveform and ModFreq internal modulation frequency must
122. low the external trigger input specifications Standard waveform other than noise pulse wave and DC and arbitrary waveform 0 00 uHz to less than 15 MHz 8 digits or 0 01 uHz resolution Standard waveform other than noise pulse wave and DC and arbitrary waveform Within settable carrier waveform frequency range 8 digits or 0 01 Hz resolution Standard waveform other than noise and DC and arbitrary waveform 0 000 to 180 000 0 001 resolution Standard waveform other than noise and DC and arbitrary waveform 1800 00 to 1800 000 0 001 resolution The sine wave amplitude frequency characteristics during PSK are limited to 25 MHz 3 dB Standard waveform other than DC and arbitrary waveform 0 0 to 100 0 0 1 resolution When the modulation depth is 0 the amplitude is 1 2 of the set value E AM DSB SC Double Side Band Suppressed Carrier Carrier waveform Modulation depth setting range Remark E DC offset modulation Carrier waveform Peak deviation setting range E PWM Carrier waveform Peak deviation setting range Square wave Normal variable duty range Standard waveform other than DC and arbitrary waveform 0 0 to 100 0 0 1 resolution When the modulation depth is 100 the maximum amplitude is equal to the set value During DSB SC the carrier frequency component is Zero Standard waveform and arbitrary waveform O V to 10 V open Square wave pulse wave 0
123. ly saved to this setting memory number KE MULTIFUNCTION GENERATOR 5 1 Saving Settings b Restoring the saved contents to the initial settings Press the Clear Similarly to the saving operation after SOI Key to open setting the setting memory number press the dialog box for Clear Henory checking the the Clear soft key This opens the dialog S initialization box for checking the initialization operation ti E fs dd ANA GE SS To perform initialization select OK and TT SC Geo then press the ENTER key This en press the a ER key to causes the setting contents previously restore the initial saved to that setting memory number to be setting overwritten with the initial setting contents c Changing the setting memory name Press the 1 Similarly to the saving operation after Rename soft setting the setting memory number press E the Rename soft key to open the setting setting memory l name input field memory name input field 1 000 000 000 Hz 0 100 0 p p 0 000 0 Y 2 Select the digit to be changed with the left right arrow keys GD and change the character with the U up down arrow keys or the modify knob Uppercase and lowercase alphabetic characters numbers and symbols can be input Numeric values can be directly input by using the O C9 numeric keypad Press the Delete soft key to delete the character at the cursor position The character string to the right of the cursor move
124. ly reflected to the output Alternatively enter a numeric value using the O C9 numeric keypad Then press the ENTER key or the unit key soft key to set the input value and reflect it to the output If the ENTER key is used the unit is set to b Variable duty range switching method Normally use lOff normal range 1 Select the Extend field and then press Continuous Square PI the ENTER key to open the variable 1 000 000 000 00 Hz duty range extension on off choice list 0 100 Vp p mua mz Even if there are several setting screens 0 000 Y the Extend field is always displayed on 0 000 deg the first page 50 000 0 Variable duty range extension choice list N Select the desired condition from the choice list and then press the ENTER key to apply the setting and reflect it to the output The desired condition can also be set and reflected to the output by inputting the number of the desired condition displayed in the choice list from the numeric keypad The desired condition can also be set by inputting a number from the numeric keypad while the Extend field is selected without the choice list displayed WF1973 WF 1974 59 4 BASIC OPERATION c Difference between normal and extended variable duty range Variable Range Characteristics Normal Setting range 0 0100 to 99 9900 e Range in which the duty can be changed with little jitter and no pulse loss The higher the frequency the narro
125. manipulation and remote trigger manipulation are always effective regardless of the trigger source setting MAN TRIG The Start soft key and the MAN TRIG key can be used for manual trigger 90 MULTIFUNCTION GENERATOR 4 8 Sweep Setting and Manipulation manipulation Note that in the case of the WF1974 the MAN TRIG key works for the channel whose display is active For details on the channel whose display is active ep 38 To use only manual trigger manipulation and remote trigger manipulation as the trigger set the trigger source to Ext external Also to prevent malfunction due to external noise it is recommended to set the polarity to Off I To start sweep Start soft key or trigger When during continuous sweep the mode is the sweep oscillation mode the sweep operation starts automatically However if the sweep setting is improper sweep oscillation will not start Conflict is displayed in the top right part of the screen When the soft key appearing at the left end is pressed a message about the inappropriate setting is displayed Once the setting has been changed to a suitable setting sweep oscillation starts If sweep operation is currently stopped press the Start soft key to start it If the Start key is not displayed press the W 2 2 soft key on the right end to switch soft key sets In the case of single shot sweep and gated single shot sweep sweeping starts upon receipt of a
126. mber of jumps step stop phase branch operation step termination control step sync code output Waveform frequency phase amplitude DC offset square wave duty Constant keep linear interpolation except waveform switching 0 1 ms to 1 000 s 4 digits or 0 01 ms resolution 1 to 999 or infinite 0 000 to 360 000 CH1 reference phase 0 001 resolution or invalid Check of state branch input from multi I O connector at step end Upon branch input detection branching to specified destination step Immediate branching to specified destination step through event branch manipulation or input Sequence end or transition to next step Output of 4 bit code specified for each step to multi I O connector LSB outputtable to sync sub output connector Sine wave square wave noise DC and arbitrary wave Ramp wave and parameter variable waveform can be used through saving as arbitrary waveforms 128 Oscillation start from reference phase 0 of each channel at next step after DC or noise excluding DC and noise Start stop hold resume event branch Use of 4 bits of multi I O connector Start or state branch stop hold resume event branch Sequence external trigger input start trigger Polarity Input connector Positive negative off selectable Use of external trigger input on CH1 side Input voltage and input impedance follow the external trigger input specifications WF1973 WF1974 E 4 41 7 SPE
127. modulation frequency If Source modulation source is Ext external set the trigger polarity and input the modulation signal TTL level to the external trigger input terminal If the polarity is set to High positive the carrier frequency is output during low level input and the hop frequency is output during high level input and vice versa if the polarity is set to Low EGM MULTIFUNCTION GENERATOR 4 7 Modulation Setting and Manipulation 4 7 6 Setting PM The output phase varies according to the instantaneous value of the modulation signal For the manipulation methods that are common with the modulation setting screen refer to pp 70 and 72 a PM example Phase shifting of the output signal grows larger when the modulation signal swings to the positive side Since the phase changes along with time the instantaneous frequency also changes simultaneously Modulation sync signal during internal modulation Modulation signal Output signal b Selecting PM When Mode oscillation mode is set to Modulation set Type modulation type Select PM in a Typa and ten on the 2nd page of the setting screen to press the ENTER PM PM 1 WE F key c Waveforms for which FM is not possible PM is not possible for noise and DC d Setting items required for PM Set Deviation peak phase deviation on the 2nd page of the setting screen The output phase changes in the range of pea
128. n mode to triggered gate oscillation Continuous Set Mode oscillation mode to Burst on the oscillator setting screen The oscilla tion mode is switched to the burst oscilla 1 Continuous Oil lation Select Burst in 2 je ocal and then tion mode as a result In the burst oscilla ese ENS tion mode the setting screen consists of two pages which can be toggled with the NEXT key Next set BrstMode burst mode on the Auto 2nd page of the burst oscillation mode Trigger Select TrigGate in setting screen to TrigGate triggered gate 4 TrigGate then press the Sa ENTER key 118 MULTIFUNCTION GENERATOR 4 9 Burst Setting and Manipulation c Triggered gate oscillation setting screen MW 1st page Screen for the basic parameters These are the common setting items that are common to all the oscillation modes Indicates that the 1st page DA Set the oscillation Sine is displayed mode to Burst 1 000 000 000 00 Hz 0 100 Vp p ate igh E WA Press the NEXT Oscillation start stop E 0 000 deg key todisplay phase setting the 2nd page E ee a et e 4 Oscillation start stop phase Phasel This is the phase at which oscillation starts and stops NW 2nd page Screen for the triggered gate oscillation settings Indicates that the 2nd page is displayed Trig Wait Set burst mode to ae TrigGate Stop level m lt 2 Trigger E EE ge Press the NEXT O
129. n the same location Hold is displayed during sweep execution and Resume is displayed when the sweep operation is paused o To output the sweep start value SttState soft key Press the SttState soft key to set the sweep start value output state The status of the equipment under test at the sweep start value can be checked The SttState soft key is displayed in the sweep start value output state or in the sweep stop value output state If the SttStatel soft key is not displayed press the W 2 2 soft key on the right end to switch the soft key sets WF1973 WF1974 oi 4 BASIC OPERATION In the case of gated single shot sweep the state is the start value oscillation state To stop oscillation press the Stop soft key p To output the sweep stop value StpState soft key Press the StpState soft key to set the sweep stop value output state The status of the equipment under test at the sweep stop value can be checked The StpState soft key is always displayed in the sweep mode If the StpStatel soft key is not displayed press the W 2 2 soft key on the right end to switch the soft key sets In the case of gated single shot sweep the state 1s the stop value oscillation state results To stop the oscillation press the Stop soft key q To output sweep sync signal sweep marker signal sweep X drive signal Sync output setting This setting is done with SyncOut sync output on the 3rd page of t
130. n type FM peak deviation FSK hop frequency PM peak deviation PSK deviation AM modulation depth DC offset modulation peak deviation PWM peak deviation Modulation source FSK PSK external modulation input polarity Sync sub output Continuous oscillation Sine Normal FS 1 kHz 0 1 Vp p OV Auto Open 0 Off Reference phase synchronization Normal range 50 50 l us 50 Steady sine group unbalanced sine FM 100 Hz 1 1 kHz 90 90 50 0 1V 10 Internal sine 100 Hz Positive Internal modulation synchronization 126 MULTIFUNCTION GENERATOR E Sweep Sweep type Frequency sweep range Phase sweep range Amplitude sweep range DC offset sweep range Duty sweep range Sweep time Sweep mode Trigger source External trigger input polarity Sweep function Mark values Stop level External control input Oscillation stop unit during gated single shot Sync sub output E Burst Burst mode Mark wave number Space wave number Trigger source External trigger input polarity Trigger delay Stop level Oscillation stop unit during gate Sync sub output E 2 channel operation WF1974 only Channel mode Frequency difference Frequency ratio Same value setting E Other Use of user defined unit External 10 MHz frequency reference External addition Frequency 1 kHz to 10 kHz 90 to 90 0 1 Vp p to 0 2 Vp p 0 1 V to 0 1 V 40 to 60 0 1s Continuous Inte
131. ncnnncnnccnncnancnnos 41 overheating occooccnccnnoncncnncnnnccnnccancnoncancnananos 25 P panel front panel of WF1973 ooccinccnnncnccnnccnnc 8 front panel of WF1974 oo ces 10 rear panel of WF1973 oo cecc cece enone 9 rear panel of WF1974 oo cece ees 11 panel and case cleaning ocoocccncccnccnccnncnnnos 6 parameter variable waveforms use 65 p riod display screen 45 period setting occooccnccnnccnncnnccnncnoncnnccnnaconinnos 45 phase difference between channels 47 phase difference setting occoncccnccnccnncnnccnnos 47 Phase setting oocconccnccnnccnncnnccnncnnncnnccnncnnncnnos 45 eler E 52 power on off switching method 21 power supply connection oocoocccnccnncnnccincnnnoso T pulse wave coocccocccncnnccnncnnnconccnncnnncnnacaninaninnos 61 leading edge time ccocccncccnccnccnnccnnccnanans 61 switching the pulse width time and pulse width duty ooccocccnccncccnccnnccnnccns 61 trailing edge time ccooccncccnccnccnnccnnccnnionns 61 width and leading trailing edge time SELLO unir coito 61 width leading edge time and trailing edge time definitions and limitations 63 R rack mounting dimensions 06ceeee 149 rack mounting method ccc ceec cece eee e eens 6 PARTO WAV susi dolce 64 symmetry setting oocooccccccnccnncnnoccnannninns 64 recall procedure setting oocccoccncccncnnncnnes 124 Bor EE 25 39 RUPOUT sa 16 reference pha
132. nd Manipulation normally ep 116 A trigger gate is required for gate oscillation Refer to the following item f Trigger gate settings for gate oscillation The trigger gate can be selected from internal trigger oscillator external signal manual trigger key manipulation and remote trigger manipulation While the gate signal is on the TRIG D lamp next to the MAN TRIG key lights The trigger source is set with Trig trigger on the 2nd page of the setting screen The trigger delay is fixed to minimum E Trigger source setting The trigger source can be chosen from Int internal and Ext external When the trigger source is Int internal the trigger period can be set At this time the gate signal is a square wave with 50 duty When the trigger source is Ext external the trigger polarity can be set If the trigger source is set to Ext external a TTL level trigger signal is input to the external trigger input terminal TRIG IN NW Usage of manual trigger and remote trigger Manual trigger manipulation and remote trigger manipulation are always valid regardless of the trigger source setting MAN TRIG The gt MAN TRIG key can be used for manual trigger manipulation The gate signal is on while the MAN TRIG key is pressed However in the case of the WF1974 the MAN TRIG key works for the channel whose display is active For details on the channel whose display is active ep 38 To use only
133. nd page of the setting screen to ech Select Phase in Phase phase Type and then press the ENTER key c Waveforms for which phase sweep is not possible Phase sweep is not possible for noise and DC d Setting items required for phase sweep Set the following items on the 2nd page of the setting screen The phase settings on the 1st page of the setting screen are disabled Start phase Start e Stop phase Stop e Sweep time Time This is the transition time from the start phase to the stop phase ep 87 e Sweep mode SwpModel Continuous single shot and gated single shot can be chosen from ep 87 WF1973 WF 1974 Ka 4 BASIC OPERATION e Sweep function SwpFctn One way shuttle can be chosen from ep 86 Setting with Center center phase and Span span phase instead of the start phase and stop phase is also possible ep 86 When the sweep mode is single shot or gated single shot Trig trigger condition must be set 7 p 90 Set the following items as needed e Marker phase Marker 2nd page of setting screen e p 92 Stop level StpLvll 8rd page of setting screen e p 89 This setting can be used only for gated single shot sweep External control with multi I O connector ExtCtrll 3rd page of setting screen 7 p 94 e Oscillation stop unit for gated single shot sweep lOscStop 8rd page of setting screen Sp 89 This setting can be used only for gated single sweep e Sync output SyncOut
134. nnncinnnnn 92 SWEEP MOE coocccncccnccnnncnnncnnncnnnnss 87 88 89 sweep range and time ccc cee eee cesses 86 sweep type cecececcecscecsecececsececseseeececseees 86 sweep types ssssesssessesesessesessereressereseesesese 83 sweep X drive signal oooocconccncccnccncccn 92 SYNC signal ooooccocccncncncnnccnncnonccnncnnncnncnns 92 sync signal marker signal X drive Siena E 92 EE eege 86 triangular WAVE sweep occooccnoccnccnccnnccnnos 87 trigger condition setting c oooccncccccnnccnn 90 LIDO renal 86 SUN EI UBA soni 13 ECH EE 21 MS A E ES 25 ODER ana 29 A W 14 trierer E emma todita 109 manual trigger sanos 111 mark wave number eccere 109 110 start trigger burst civic 111 start stop phase cooccocccnccnoccnccnnconaconoso 110 stop level seen sia 112 SYNC Sena EE 111 trigger delay setting occocccncccnccnncnncono 111 trigger settings for trigger burst 111 triggered gate oscillation oooccnnccncc 118 manual trigger initial 120 noise triggered gate oscillation 121 oscillation in half cycle units 121 start triggered gate oscillation 120 start stop Phase oooccocccoccnoccnocnnconoconoso 119 STOW level amics ies 121 WF1973 WF1974 E 55 SYNGE SIONAL asada 120 trigger settings coocccoccncccncnnnconoconinnncnnss 120 TRIG D lamp eee 90 111 115 120 U A eo EO 25 vine AAA 25 UNDO ES csi ici 35 unit ER th aa 3
135. nnncnncnnncnncconccnninnns 44 G gate oscillation ccoracausdedawsovinvennabiniowusenseswecdes 113 Manual trigger occonccnccnncnnncnnccnnconiconaso 115 noise gate oscillation oocconcincccncnn 117 oscillation in half cycle units 116 start gate oscillation c eee 115 start stop Phase cooccocccnccnoconocnnconaconoso 114 A 116 SE E 115 trigger gate settings for gate OSCIMA GION eiii 115 SOWANG siessen aniona EE 6 H high level low level setting of output WOVE rr 51 UO terminals ooocccncnnnccnnccnnocnnncnonocnnacnnaconoss 12 10 MHz frequency reference input 15 external 10 MHz frequency reference IDU Enteros iio epi 15 external addition input cooccccccncccncnniccn 14 external modulation input 0 14 external modulation addition input 14 external trigger Input ou eee ee eee 14 frequency reference Input ceees 15 frequency reference output 068 16 WF1973 WF1974 E EJ modulation addition input cc 0 14 MATO ada 16 sync sub output E 13 TVS SSP input eege 14 waveform output occocccncccnccncncnccnnnoninnnoss 12 initial settings list o o o cnoncnnncnccnnccnncnnncnns 126 WS CONIC OM eege ee 5 inverted waveform polarity eeseeeeeee 52 L EI e RE 6 load impedance setting cooccncccnccnncnncnonoconeso 55 M MAN TRIG key noii 90 111 115 120 MENU Key senora bios 29 MODADD IN evacrisa 14
136. ns can also be restored to the original settings When the UNDO key is pressed again immediately following undo manipulation the settings are restored to their state before undo It should be noted however that undo does not work for some items WF1973 WF 1974 ECH 4 BASIC OPERATION 4 3 5 Changing the display unit a Changing the prefix unit prefix k m M etc Frequency is used as an example below The amplitude and pulse width can be changed in a similar manner 1 Select frequency and then press the ENTER key to open the input field to K The input field opens 2 Press the Prefix soft key and the cursor ontinua will move to before Hz 1 000 000 000 00 Hz The right arrow key can also be used to 000 000 UU CD move the cursor to before Hz 0 000 0 000 deg La moves to before Hz when Prefix is pressed O O O QO 3 Change the unit to MHz kHz Hz mHz or uHz with the Unit change up down arrow keys or the modify knob Even when the O display unit and decimal point position are changed the value of the setting itself remains unchanged sl Continuous Sine Ee Continuous Sine f 1 000 000 000 00 Hz 1 000 000 000 00 Hz 1 000 000 000 CH 0 001 000 000 000 eg 0 000 Y GE 0 000 Y 0 000 deg o 0 000 deg kHz display MHz display EN MULTIFUNCTION GENERATOR 4 3 Basic Settings and Operations b Changing Vp p Vrms user def
137. o 3 V open Sweep X drive 0 V to 3 V open 50 unbalanced 50 Q or higher recommended Front panel BNC receptacle 7 5 Signal Characteristics 7 5 1 Sine wave Amplitude frequency characteristics 100 kHz or lower 100 kHz to 5 MHz 5 MHz to 20 MHz 20 MHz to 30 MHz Total harmonic distortion 10 Hz to 20 kHz 0 1 dB 0 15 dB 0 3 dB 0 5 dB 0 8 dB at amplitude setting of 2 8 Vp p 50 Q or higher Condition Amplitude setting 50 mVp p to 10 Vp p 50 Q reference frequency 1 kHz 0 2 or less Condition Amplitude setting of 0 5 Vp p to 10 Vp p 50 Q WF1973 WF 1974 KEN 7 SPECIFICATIONS Harmonic spurious Condition Amplitude setting 1 MHz or lower 1 MHz to 10 MHz 10 MHz to 30 MHz Non harmonic spurious 1 MHz or lower 1 MHz to 10 MHz 10 MHz to 30 MHz 7 5 2 Square wave Duty Variable range selectable Normal range Extended range Setting range Normal range Extended range Duty accuracy 100 kHz or lower 100 kHz to 1 MHz 1 MHz to 3 MHz Rising falling time Overshoot Jitter 7 5 3 Pulse wave Pulse width Duty setting range Time setting range 0 5 Vp p to 2 Vp p 50 Q 60 dBc or lower 50 dBc or lower 40 dBc or lower 2 Vp p to 10 Vp p 50 Q 60 dBc or lower 43 dBc or lower 30 dBc or lower 60 dBc or lower 50 dBc or lower 45 dBc or lower Condition Amplitude setting of 0 5 Vp p to 10 Vp p 50 Q Normal extended selecta
138. o the output The desired oscillation mode can also be set and reflected to the output by inputting the number of the desired oscillation mode displayed in the choice list from the numeric keypad The oscillation mode can also be set by inputting a number from the numeric keypad while the Mode field is selected without the choice list displayed WF1973 WF 1974 E ER 4 BASIC OPERATION 4 4 3 Setting the waveform 1 Press the FCTN shortcut key to display the waveform choice list Alternatively select the Fctn field and press the ENTER key to open the choice list choice list Even if there are several setting screens the Fctn field is always displayed at the top right of the first page 2 Select the desired waveform from the choice list and then press the ENTER key to apply the setting and reflect it to the output The desired waveform can also be set and reflected to the output by inputting the number of the desired waveform displayed in the choice list from the numeric keypad The desired waveform can also be set by inputting a number from the numeric keypad while the Fctn field is selected without the choice list displayed 4 4 4 Setting the frequency 1 Press the FREQ shortcut key to display the frequency input field or select the Freq field and then press the ENTER key to open the input field A Even if there are several setting screens 0 000 deg Frequency the Freq field is always displayed at the
139. of 2 7 V open or higher Rear panel Mini Dsub 15 pin multiconnector 142 MULTIFUNCTION GENERATOR 7 12 2 channel ganged operation WF 1974 only 7 12 2 channel ganged operation WF1974 only Channel modes Channel Mode Operation Independent Independent setting 2 phase Holds same frequency During frequency sweep internal frequency modulation and internal FSK the same frequency 1s controlled to be held External frequency modulation and external FSK are not possible Phase independently set for each channel Constant frequency Holds the frequency difference as a constant value difference During frequency sweep internal frequency modulation and internal FSK the frequency difference is controlled to be held External frequency modulation and external FSK are not possible Constant frequency ratio Holds the frequency ratio as a constant value During frequency sweep internal frequency modulation and internal FSK the frequency ratio is controlled to be held External frequency modulation and external FSK are not possible Differential output Same frequency amplitude and DC offset Reverse phase waveform Differential output is controlled to be held during all types of sweep and internal modulation External modulation and external addition are not possible Common limiting conditions during 2 phase constant frequency difference constant frequency ratio and differential output e Oscillation in same oscillat
140. of the screen and then 2 On the Store Memory screen select the press the ENTER key to open the field for inputting the Memory No field and then press the number of the setting memory to which the setting is to be ENTER key to open the field for saved i inputting the number of the setting memory An outline of the to which the setting is to be saved A setting in the specified setting E EE 3 Increment decrement the setting memory Sine is displayed number with the Ot up down arrow personas keys or the modify knob 0 000 0 The specified setting memory number and setting name are displayed in highlight in the left part of the screen An outline of the setting saved to the setting memory of the The specified setting memory number and the setting name specified number is displayed in the right displayed in highlight are displayed In highlig part of the screen Press the Store 4 Select the number of the setting memory soft key to open to which the setting is to be saved and the dialog box for th th ENTER kev to cl Store Memory checking the SS E ey EES esch saving operation the setting memory number input field U 1UU U YA 0 000 0 5 Press the Store soft key to open the Select OK and dialog box in which the saving operation then press the be checked ENTER key to pan ano save the setting To save the setting select OK and then press the ENTER key The setting is saved overwriting any setting previous
141. ollowing operation differences exist depending on whether the pulse width is set with time or duty Pulse width set with time Pulse width set with duty The pulse width time is constant The pulse width duty is constant even if the frequency is changed even if the frequency is changed e Leading edge time and trailing edge time setting method The leading edge time LE and trailing edge time TE can be set only with time illator 1 To set the leading edge time select the Continuous Pulse P LE field and then press the ENTER 10 000 000 000 000 OOMHz key to open the leading edge time input 0 100 Yp p ae High field 0 000 Y To set the trailing edge time select the 0 000 deg TE field and then press the Leading edge ENTER key to open the trailing edge time time input field input field Even if there are several setting screens the LE and TE fields are displayed on each page 2 Select the digit to be changed with the lt J gt left right arrow keys and increment decrement the value with the U up down arrow keys or the modify knob The change is instantly reflected to the output Alternatively enter a numeric value using the O C9 numeric keypad Then press the ENTER key or a unit key soft key to set the input value and reflect it to the output If the ENTER key is used the unit is set to s 62 MULTIFUNCTION GENERATOR 4 4 Setting Methods for Main Items f Pulse width leading edge time and trailing e
142. op menu items The menu items are displayed at the top left of each setting screen Settings and operations such as those described below can be done with the various menu items E Oscillator Menu item Almost all settings other than arbitrary waveform editing y and sequence oscillation can be set and manipulated o When the power is applied the Oscillator setting screen is Continuous Sine always displayed 1 000 000 000 00 Hz III E Sequence 0 000 Y 0 000 deg Sequence oscillation setting and manipulation can be done 6 USING SEQUENCE OSCILLATON in the Application Instruction Manual Phase E ARB edit Arbitrary waveform editing can be done 2 CREATING ARBITRARY WAVEFORMS in the Application Instruction Manual E Utility Various settings and manipulations can be done ep 39 E Store memory The settings can be saved to the setting memory p 122 E Recall memory The settings can be called from the setting memory p 124 WF1973 WF1974 EN 4 BASIC OPERATION 4 3 Basic Settings and Operations 4 3 1 Changing the frequency amplitude and other values a Changing a value with the up down arrow keys or the O modify knob selected The current frequency is displayed Continuous 1 OO OT NAN NN Hz 1 008 000 000 00 Hz L 0 000 deg The input field is opened Continuous Sine 1 00 000 000 00 Hz OU 00 000 000 00 Hz Da y 0 00dan The digit to be
143. p is not a problem for connection with a frequency standard Nor 1s noise caused by ground loop a problem in the case of synchronized connection of multiple units of the WF1973 or WF1974 However in all cases the floating voltage should be limited to 42 Vpk DC AC peak or lower to prevent electric shocks The other signal grounds are all connected to the housing The housing itself is connected to a protective grounding terminal To prevent electric shocks do not apply a voltage exceeding 42 Vpk DC AC peak between the ground of the BNC connectors insulated from the housing and the housing Also do not apply a voltage exceeding 42 Vpk DC AC peak between the grounds of the BNC connector groups insulated from the housing BNC connector group as used here refers to multiple BNC connectors that are connected to a common ground If such a voltage were to be applied the internal voltage limiting elements will try to curb the working voltage but if the voltage is too large equipment burnout may result N CAUTION H there is a difference in potential between the ground of a BNC connector insulated from the housing and the housing do not short circuit the hot side of that BNC connector and the housing as this may damage the equipment N CAUTION Ifa difference in potential exists between the grounds of the BNC connectors do not short circuit these BNC connector grounds as this may damage the equipment WF1973 WF 1974 KE 3
144. page Is displayed Oscillator Si Set burst mode to Gate Trig Wait Stop level 2 Trigger AE Sync output Oscillation stop unit l key to display 1 Sync output A the tstpage BrstMode Trig OscStop StpLwl SyncOut JONA O SS SS 4 l Press the NEXT Stop level StpLvl This is the signal level during oscillation stop The level can be set to either off or on Normally it is set to off p 116 Trigger Trig This is the trigger condition gate condition Internal and external can be chosen as the trigger source p 115 Oscillation stop unit OscStop This is the oscillation stop unit One cycle and 0 5 cycles can be chosen from Normally 1 cycle is set ep 116 Sync output SyncOut This is the output signal from the sync sub output terminal Waveform reference phase synchronization and burst synchronization can be chosen from ep 115 d Waveforms for which auto burst is not possible Gate oscillation is not possible for DC Gate oscillation can be done for noise but the operation differs from that of other waveforms p 117 e Setting items required for gate oscillation On the 1st page of the setting screen set Phase oscillation start stop phase Normally set StepLvl stop level on the 2nd page of the setting screen to Off p 116 Set OscStop oscillation stop unit on the 2nd page of the setting screen to Cycle 1 cycle KEN MULTIFUNCTION GENERATOR 4 9 Burst Setting a
145. performed by a person with general knowledge of test instruments and experienced in their operation For details on performance tests 10 MAINTENANCE in the Application Instruction Manual WF1973 WF1974 7 3 PANELS AND I O TERMINALS 3 1 Panel Components and Operations This section describes the names and functions of the various components on the front and rear panels 3 1 1 Front panel of WF1973 Numeric keypad Used for numerical input p 31 UNDO key Press to undo setting changes p 35 CANCEL key Basic parameter shortcut keys Press to allow the waveform frequency amplitude and DC offset to be changed Press to cancel e p 34 ze p 35 MENU key ENTER key Displays the top menu Press to enter a setting p 29 ep 35 LCD panel Arrow keys Press to select items or increase decrease values e p 30 Modify knob Press to select items or increase decrease values e p 30 Manual trigger key Used for sweep burst trigger pp 90 111 115 120 GOlcCH CC CH Cl AP Ee S Triggered lamp S Lights when a trigger is accepted pp 90 111 115 120 S Power switch External trigger input terminal p 14 fp 21 External modulation addition input terminal Soft keys p 14 The manipulation parameter is displayed on the LCD panel ep 26 NEXT key Press to switch setting screen pages p 26 Sync sub output terminal ep 13 Wavefo
146. play the top menu window In that window select Oscillator In the top menu Utility and then press the ENTER BEE select Utility and dt A gt IN E A key to display the Utility screen ENTER key EE SE 2 On the Utility screen select the Reset li field and then press the ENTER key Valid The settings are initialized On the Utility screen select Reset and then press the ENTER Exec key 4 3 9 Output on off a Manipulation method on panel Each time the waveform output on off key is pressed the waveform output is switched on off When the output is on the lamp located to the left of the key lights Output off Output on Output on off key eun Ra Y When the output is off the output terminal is open When the output is on the output impedance is 50 Sync sub output is always on regardless of the on off setting of the waveform output b Setting at power on The waveform output on off status at power on can be specified The output setting at power on can be selected from the following three Off Off The output is off e On On The output is on WF1973 WF 1974 41 4 BASIC OPERATION Return to previous setting Last State The operation differs as follows according to the method used the previous time to set the power off If the power was switched off the previous time with the power switch on the panel The settings before the power was switched off are restored
147. receipt of a trigger oscillation of the specified wave number is performed The trigger can be selected from internal trigger oscillator external signal manual trigger manipulation and remote trigger manipulation h To output burst sync signal Sync output setting This setting is done with SyncOut sync output on the 2nd page of the setting screen One of the following two settings can be selected e Signal synchronized with the reference phase of the waveform Sync e Signal synchronized with burst oscillation BrstSync WF1973 WF 1974 KIM 4 BASIC OPERATION NW When Sync is selected A TTL level signal that rises at the reference phase of the waveform is output from the sync sub output terminal E When BrstSync is selected A TTL level signal synchronized with the burst oscillation is output from the sync sub output terminal As shown in the following figure this signal is low during oscillation and high during oscillation stop When the signal during burst is observed with an oscilloscope it can be used as the trigger signal for the oscilloscope Burst sync signal d Oscillation Stop Oscillation Stop Output signal i Usage of stop level The level when oscillation is stopped is normally set with the oscillation start stop phase but 1t can also be set independently from that with a proportion of the amplitude full scale Set StpLvll stop level on the 2nd page of the setting screen to On on
148. red range processing and SE then press the ENTER key Phase b Maximum values of amplitude and DC offset when range is fixed When the range is fixed the maximum values of the amplitude and DC offset and the external addition gain are as listed in the following table Range Maximum Maximum Value of Maximum Value of Maximum Value of External Addition Output Voltage Vp p Amplitude DC Offset AC DC Gain Amplitude Load Open Value Load Open Value Load Open Value 1 V Rating Attenuator EN MULTIFUNCTION GENERATOR 4 4 Setting Methods for Main Items 4 4 12 Setting the load impedance When the load impedance setting value is made the same as the actual load condition the amplitude and DC offset including setting with high level low level can be set with the voltage value that appears at load end The load impedance value can be set in the range of 1 Q to 10 KQ 50 Q or open High Z However even if the load impedance setting value is changed only the displayed amplitude setting value and DC offset setting value change and the load open output voltage remains unchanged a Setting method Continuous Sine 1 000 000 000 00 Hz Select the load impedance icon and then press 0 000 deg the ENTER key Phase Oscillator The load impedance Continuous Sine z setting window 1 000 000 000 00 opens Dutput Load Hiah 7 S Set the load impedance condition High 2 Variable
149. rent value is displayed the Center or Span soft key is displayed When this key is pressed the center value or span value input field opens and the item displays change from Start and Stop to Center and Span respectively The Center or Span soft key changes to Start or Stop When the Start or Stop soft key 1s pressed at this time the start value or stop value input field is displayed The center value is the average of the start value and stop value The span value is the absolute value of the difference between the start value and the stop value Even 1f frequency log sweep 1s selected the center value is the linear average of the start value and stop value Even when center value and span value display are selected the relation of magnitude between the start value and stop value 1s saved e To sweep a sawtooth wave One way sweep Set SwpFctn sweep function on the 2nd page of the setting screen to Lin OneWay In the case of frequency sweep it is also possible to set the slope to Lin OneWay linear or Log OneWay log EN MULTIFUNCTION GENERATOR 4 8 Sweep Setting and Manipulation One way sweep Sweep value LD LD f To sweep a triangular wave Shuttle sweep Set SwpFctn sweep function on the 2nd page of the setting screen to Lin Shuttle shuttle In the case of frequency sweep it is also possible to set the slope to Lin Shuttle linear or Log Shuttle log Shuttle
150. required set the trigger signal with Trig trigger on the 2nd page For the trigger setting procedure p 90 E Oscillation start stop phase The oscillation start stop phase setting is done with Phase phase on the 1st page of the setting screen However during phase sweep the start phase setting is the oscillation start phase and the stop phase setting is the oscillation stop phase WE Stop level normally set to Off To set the level while the oscillation is stopped separately from the phase set StpLvll stop level on the 3rd page of the setting screen to On on and set the level with a value using the amplitude full scale as reference Normally Off off is set When Off is selected the signal level while oscillation is stopped is determined by the phase set in Phase on the 1st page of the setting screen For details on the stop level en 112 E Oscillation stop unit normally set to Cycle 1 cycle To stop oscillation in half cycle units set OscStop oscillation stop unit on the 3rd page of the setting screen to HalfCycle half cycle Normally set to Cycle 1 cycle When Cycle 1 cycle is set whole integer cycle oscillation results When oscillation 1s stopped it always stops either in 1 cycle or half cycle units according to the OscStop oscillation stop unit setting and the oscillation time is usually longer than the sweep time setting WF1973 WF 1974 89 4 BASIC OPERATION
151. rformance cannot be maintained Since this is a malfunction notify NF Corporation or an NF distributor Overheating status Temp Displayed when the internal temperature of the equipment becomes abnormally high When this status is displayed during use at an ambient temperature of 40 C or lower this indicates a malfunction so notify NF Corporation or an NF distributor Remote status USB GPIB Displayed when the equipment is controlled via the USB or GPIB interface External frequency reference status Displays whether a valid signal is input or not when the external frequency reference is enabled Sequence status channel mode WF1974 only The status when the sequence oscillation mode is selected is displayed In the WF1974 the mode when the channel mode is other than independent 2 phase constant frequency difference constant frequency ratio and differential output 2 channel same value Both setting WF1974 only Displayed when the same setting is done for CH1 and CH2 Remote status External frequency reference status Overheating us Sequence status Uncalibrated aa LE 2 channel channel mode Y lt value WF1974 only Osc A y mr Usa WUE Ref Ab setting Sine WF1974 only 1 000 000 000 00 Hz 0 100 Yp p Hate me 0000 Y 0000 deg Mode WF1973 WF1974 EH 4 BASIC OPERATION WE Setting area This area is used to display and set the various parameters When multiple display formats can be se
152. rm output on off key Press to switch waveform output on off When on the lamp on the left is lit ep 41 Waveform output terminal p 12 Figure 3 1 Front Panel of WF1973 HEN MULTIFUNCTION GENERATOR 3 1 Panel Components and Operations 3 1 2 Rear panel of WF1973 MODEL SERIAL NO NF Corporation MADE IN JAPAI i Q amp 10MHz REF IN REF OUT GPIB Est 1 0 OO amp op Eme oe A N DE 1508 502 mn EP LINE 100V 230V As OHz 60Hz SOVA MAX E wn wW 21 Exhaust vent ep Power supply input p 6 USB connector GPIB connector Multi 1 O connector Used for sweep sequence control sync code output ep 16 Frequency reference output terminal ep 16 External 10 MHz frequency reference input terminal ep 15 Figure 3 2 Rear Panel of WF1973 WF1973 WF1974 ER 3 PANELS AND I O TERMINALS 3 1 3 Front panel of WF1974 Numeric keypad Used for numerical input ep 31 UNDO key Basic parameter Press to undo setting changes shortcut keys p 35 Press to allow the waveform frequency amplitude and DC CANCEL key offset to be changed Press to cancel e p 34 ep 35 MENU key ENTER key Displays the top menu Press to enter a setting p 29 p 35 LCD panel Arrow keys Press to select items or increase decrease values p 30 Modify knob Press to select items or increase decrease value
153. rnal 1s Negative One way linear 5 kHz 0 0 15 Vp p 0 V 50 Off 0 Disabled 1 cycle Sweep synchronization marker on Trigger burst 1 cycle 1 cycle Internal 10 ms Negative Os Off 0 1 cycle Burst synchronization Independent O Hz 1 1 Off Released Disabled Off WF1973 WF 1974 E 27 6 LIST OF INITIAL SETTINGS The following settings are factory default settings for items which do not return to their initial values even if initialization is executed once the settings are changed by the user E User defined unit definition Unit name Calculation formula m D usrl to usr6 h n m 1 0 E Output settings at power on and power operation settings Output at power on Display Modify direction Operation sound E Remote settings Interface GPIB address Off Backlight on dark color Downward through clockwise rotation On USB The following settings are initialized every time the power is switched on E Sequence Start step Trigger polarity External control input External control start state branch Sync sub output Step time Auto hold Jump destination Number of jumps Stop phase State branch Event branch Control of step termination Step code Internal step operation Channel parameters 1 Off Disabled Start Step synchronization ls Off Off Infinite Off Off Off Go to next step LLLL Constant Equal to initial settings KE MULTIFUNCTION GENERA
154. s e p 30 Manual trigger key Used for sweep burst trigger e pp 90 111 115 120 6 SI JSL Se Triggered lamp Ssss Lights when a trigger is accepted pp 90 111 115 120 DE WAVE F STORY e eg MAN TRIG o ona gt FCTN OUT SYNC SUBOUT FCTNOUT SYNC SUB OUT CH2 sync sub output terminal p 13 CH2 waveform output on off key Press to switch CH2 waveform output on off When off the lamp on the left is lit ep Ai Power switch ep 21 Soft keys The manipulation parameter is displayed on the LCD panel CH2 waveform output terminal p 26 p 12 NEXT key CH1 sync sub output terminal p 13 CH1 waveform output on off key Press to switch CH1 waveform output on off When on the lamp on the left is lit ep Ai Press to switch setting screen pages ep 26 CH1 CH2 switching key Press to switch the channel to be set on the LCD panel p 38 CH1 waveform output terminal p 12 Figure 3 3 Front Panel of WF1974 KIM MULTIFUNCTION GENERATOR 3 1 Panel Components and Operations 3 1 4 Rear panel of WF1974 CH1 external trigger input terminal p 14 CH2 external trigger input terminal p 14 Exhaust vent fp LINE 100V 230V OHz 60Hz 75VA MAX Power supply input p 6 MOD ADD IN CH 1 CH2 ACI USB connector GPIB connector Multi 1 O connector Used for sweep
155. s one place left Press the Insert soft key to insert a space at the cursor position Press the CLR soft key to delete the character string to the right of the cursor position cursor position not included Press the Clear soft key to delete all the characters The name may consist of up to 20 characters 3 Press the Apply soft key or the ENTER key to fix the changed name and close the setting memory name input field When the CANCEL key is pressed here the name remains unchanged and the setting memory name input field closes The setting memory name can also be changed on the Recall Memory screen Y Check The following characters can be used for the setting memory name ABCDEFGHIJKLMNOPQRS TUVWXYZ ij kilmnopgqrstuvwxyz a f 0 5 9 o 23 lt gt 90 Y 7 _ space WF1973 WF1974 RK 23 9 SAVING AND RECALLING SETTINGS 5 2 Recalling Settings The setting conditions saved to the setting memory can be recalled for use The setting recall operation is done on the Recall Memory screen At shipping the same contents as the initial settings are saved to all the setting memories a Setting recall procedure 1 Press the MENU key to display the top menu window In this window select Oscillator Recall Memory and then press the Sequence In the top menu ENTER key to display the Recall Memory ARB Edit select Recall Utility Memory and screen toro Memory then press the Recall Memory ENTER
156. scillation start stop phase is reached Gate signal Gate on Gate off Gate on Gate off Output signal J Oscillation start stop phase 30 b Setting the oscillation mode to gate oscillation ankle Set Mode oscillation mode to Burst 4 Con tinuous burst on the Oscillator setting screen Modulation Select Burst in The oscillation mode is switched to the Bon ees and then burst oscillation mode as a result In the ress the ENTER SC Ge burst oscillation mode the setting screen consists of two pages which can be toggled with the NEXT key Next set BrstMode burst mode on the idol 2nd page of the burst oscillation mode oe BrstMode and setting screen to Gate gate oscillation then press the ENTER key WF1973 WF 1974 113 4 BASIC OPERATION c Gate oscillation setting screen MW 1st page Screen for the basic parameters These are the common setting items that are common to all the oscillation modes Indicates that the 1st page DA the 2nd page Ve es AE eet Ge 4 Set the oscillation us gt Sine is displayed mode to Burst 1 000 000 000 00 Hz 0 100 Vp p ate igh z 0 000 Y Press the NEXT Oscillation start stop 0 000 des key to display phase setting Oscillation start stop phase Phasel This is the phase at which oscillation starts and stops NW 2nd page Screen for the gate oscillation settings Indicates that the 2nd
157. scillation stop unit key to display Sync output y4 the 1st page BrstMode Trig OscStop StpLwl SyncOut POEMA Stop level StpLvl This is the signal level during oscillation stop The level can be set to either off or on Normally it is set to off p 121 Trigger Trig This is the trigger condition Internal and external can be chosen as the trigger source p 120 Oscillation stop unit OscStop This is the oscillation stop unit A choice can be made between 1 cycle unit and 0 5 cycle units Normally 1 cycle unit is set ep 121 Sync output SyncOut This is the output signal from the sync sub output terminal Waveform reference phase synchronization and burst synchronization can be chosen from ep 120 d Waveforms for which triggered gate oscillation is not possible Gate oscillation is not possible for DC Gate oscillation can be done for noise but the operation differs from that of other waveforms p 121 e Setting items required for triggered gate oscillation Set Phase oscillation start stop phase on the 1st page of the setting screen StepLvll stop level on the 2nd page of the setting screen is set to Off normally ep 121 OscStop oscillation stop unit on the 2nd page of the setting screen is set to Cycle 1 WF1973 WF 1974 119 4 BASIC OPERATION cycle normally ep 121 A trigger is required for triggered gate oscillation Refer to the following item f Trigger settings for
158. se oococcccncccncnnccnnnnnnccnccnnacaninnos 46 remote control oocconcncncccnccnnncnnncnnncnnnononacnnoss I POAC IOS salita 5 repair Service cccccecceeceescescescessccesenseeeess 157 restoration of settings occooccncccncnnccnnccnnonon 22 154 MULTIFUNCTION GENERATOR restoring the initial settings occoocccncnn 41 restoring the saved contents to the initial settings sn va 123 S sale Check tege EE 4 safety precautions c ooconcccnccncccnccnaconaconaconcnns II safety related symbols cece ees eeee eee ee IV saving procedure Setting cooccocccncncnccnocnnes 122 screen configuration oocconccncccncnnnccncconccaninns 25 screen page SWIthching ocoocccnccnccnnccnnccnncono 26 setting memory name changing 123 125 shortcut KEYS scacsssshescrassainassmiansicancnsecesanesaeds 34 solt key display austin 26 specifications occocccnccnoconccnncnnncnnaconccancnnaconoss 129 square WaVe anio 59 difference between normal and extended variable duty range cooccncccnccnncnnccnncnns 60 duty and frequency limitations for standard variable duty range 60 d ty setting A IA 59 start stop PHASE ocoocccccccnccnccnncnnncnnccnnanananns 46 Status display area ccoocccnccnccnncnnncnncconcnoncnnss 25 OWOCU sido 83 amplitude sweep setting ccccceeeee ees 99 center and SPAN strains 86 common sweep settings and manipulations ooccocccnccnncnnnccncccninnninns 86 continuously repeat
159. secnaareusseusensrecuresues 103 4 9 Burst Setting and Manipulation 0 0an0nnaannannnnnnnnnunnnnnnnnnennnenrnnnnnrrnnrnnrennnne 105 4 9 1 Burst oscillation types occocccconcconnconcconeconononecononononononanonanenanenanes 105 E A a T 106 a TOGO DU E 109 494 Gate EE re EE 113 4 9 5 Triggered gate oscllaton 118 D SAVING AND RECALLING GEIIING 122 ES o o E EE a 122 3 2 REGCAlNd En ln Le E 124 6 LIST OF INITIAL SETTINGS ere rr eee ee 126 ls SEECIEICATION Stadt cet 129 aL CSCIC OR MOS ia incite nenita alii oracle 129 Le WAVE EE 129 7 2 41 Standard RE E e Lt EE 129 7 2 2 neu ECK A UC e E 129 fo Frequency En ee eee oa 130 7 4 Output E Ee e Eder 130 TAL AMP etanol acond a eee 130 FAZ G50 1 EE 130 7 4 3 Load impedance setting nannannanonnanonnennenenrnrnnrerrnrnrrnrrnrsrrnrnnrerrnrenne 131 44 me is Dir 0 Cane one ee ern an A 131 Pio IS MO SUD CUNO UT eii ooo pacos 131 7 3 Signal Characteristics usarse 131 ASS A 131 oe SOAS Wa adosadas 132 To EE 132 A BONNO EE 133 7 5 5 Parameter variable WaveforMS ccccccceccecceececseeeueeeeseeeeeeeueeeeeeeeneeees 133 7 6 Modulated Oscillation Mode oococconncnnccnccccnccncnnccnnnncnoninanonnnn nc nonnnnncnnannnnn 136 TO EE 136 7 6 2 Modulation conditions 137 7 7 Sweep Oscillation Mode 138 PA e e E 138 Tae SWCD CONdIUONS amonio 139 WF1973 WF 1974 MY A 7 8 Burst Oscillation Mode 139 L ER ite Let 140 TO SEQU
160. t Burst Single Shot 0 01 uHz to 30 MHz 0 01 uHz to 10 MHz 0 01 uHz to 10 MHz 0 01 uHz to 15 MHz 0 01 uHz to 10 MHz 0 01 uHz to 10 MHz 0 01 uHz to 15 MHz 0 01 uHz to 10 MHz Not usable 0 01 uHz to 5 MHz 0 01 Hz to 5 MHz Parameter variable 0 01 uHz to 5 MHz 0 01 u Hz to 5 MHz 2 waveform Fixed to 26 MHz equivalent bandwidth DC Frequency setting invalid 2 Used through conversion to arbitrary waveform Frequency setting resolution 0 01 uHz Frequency setting by period Setting equivalent to inverse number of the set period Frequency accuracy at shipping 3 ppm of setting 2 pHz Frequency aging rate 1 ppm year Phase setting range 1800 000 to 1800 000 0 001 resolution 7 4 Output Characteristics 7 4 1 Amplitude Setting range O Vp p to 20 Vp p open 0 Vp p to 10 Vp p 50 Q Peak value combining waveform amplitude and DC offset is limited to 10 V open or lower Setting resolution 999 9 mVp p or lower 4 digits or 0 1 mVp p 1 Vp p or higher 5 digits or 1 mVp p Accuracy 1 of amplitude setting Vp p 2 mVp p open Condition 1 kHz sine amplitude setting of 20 mVp p open or higher Setting units Vp p Vpk Vrms dBV dBm Range Auto hold selectable Maximum output voltage range 20 Vp p 4 Vp p Amplitude attenuator range 0 dB 10 dB 20 dB 30 dB Waveform amplitude resolution Approx 14 bits Condition Amplitude setting of 86 mVp p open or higher 7 4 2 DC offset Setting range 10 V open
161. t MOD ADD IN are insulated from the housing These signal grounds are shared within the same channel The signal ground for the external 10 MHz reference input 10 MHz REF IN is insulated from the housing Each of the signal grounds of CH1 CH2 and 10MHz REF IN are independent The withstand voltage between insulated signal grounds and between housings is 42 Vpk max DC AC peak The other signal grounds are connected to the housing Power supply Power supply voltage range 100 V AC to 230 V AC 10 250 V or lower Power supply frequency range 50 Hz 60 Hz 2 Hz Power consumption WF1973 50 VA or less WF1974 75 VA or less Overvoltage category II Ambient temperature and humidity ranges Operation guarantee 0 C to 40 C 5 RH to 85 RH Absolute humidity of 1 g m to 25 g m no condensation Temperature range limitations apply for some specifications Storage conditions 10 C to 50 C 5 RH to 95 RH Absolute humidity of 1 g m to 29 g m no condensation gt pee a eae ASNO OO NAN O E E e y WEG A G a 10 0 10 20 30 40 50 C Ambient temperature and humidity ranges WF1973 WF1974 145 7 SPECIFICATIONS Warm up time 30 minutes or more typ Pollution degree 2 External dimensions 216 W x 88 H x 332 D mm excluding projections Weight Approx 2 1 kg excluding accessories weight of main unit only Safety and EMC Applied only to models with the CE marking displayed on the rear panel
162. t of the polarity button and then amplitude range icon EE press the ENTER When this button is selected the currently WIL emor A e SE GE selected arbitrary waveform name is When the Select button is selected ECG en the joelec utton IS Selected e the number and name of the current Press the ENTER button to display arbitrary waveform is displayed the screen for selecting currently saved arbitrary waveforms 2 Arbitrary waveform selection and name change can be done on the arbitrary waveform selection screen Oscillator gt ARB Select is displayed in the top left part of the arbitrary waveform selection screen Set the number of the waveform in the ARB No field The waveform can be selected from waveform No O saved in volatile editing memory and the waveforms No 1 to No 128 saved in non volatile memory The outline of the selected waveform can be checked with the graph display The Type field shows the arbitrary waveform data format and the Size field shows the memory size used for saving data ere wave Arbitrary waveform name orm number a EE Arbitrary waveform outline List of currently saved arbitrary waveforms Applies the changes and exits the selection screen Discards the changes and exits the selection screen The changes are not reflected to the output waveform until applied by pressing the OK soft key the operation differs from that for parameter variable waveforms Arbitrary
163. t operates on the power supply voltage shown in 2 3 Grounding and Power Supply Connection in the Basics Instruction Manual Prior to connecting the power supply check that the voltage of the power supply matches the rated power supply of the product O in case of suspected anomaly If this product emits smoke an abnormal smell or abnormal noise immediately power 1t off and stop using it If such an anomaly occurs do not use this product until it has been repaired and immediately report the problem to the location of purchase either NF Corporation or your distributor Do not use this product when gas is present An explosion or other such hazard may result Do not remove the cover This product contains high voltage parts Absolutely never remove its cover Even when the inside of this product needs to be inspected do not touch the inside All such inspections are to be performed by service technicians designated by NF Corporation Do not modify this product Absolutely never modify this product as this may cause new hazards and may disqualify this product from repair in case of failure WF1973 WF 1974 E g Safety related symbols The general definitions of the safety related symbols used on this product and in the instruction manual are provided below A N WARNING Ab CAUTION O Other symbols 7 aN N IRS AH O Waste disposal Instruction Manual Reference Symbol This symbol is displayed to al
164. tems that can be changed in the phase setting The following items can be changed with the phase setting MW The phase difference between the sync sub output s reference phase sync output and waveform output can be changed The following example assumes a phase setting of 90 At this time the waveform output s zero phase position is 90 ahead of the rise of the reference phase sync output Phase setting 90 Waveform output Waveform output s zero phase position Sync sub output reference phase sync output a 90 MW The oscillation start stop phase for burst oscillation gated single shot sweep can be changed The following example is burst oscillation with the oscillation start stop phase set to 30 At this time the oscillation starts at 30 and stops at the same 30 position Burst oscillation ep 105 gated single shot sweep p 89 Phase setting 30 Oscillation stop at 30 Oscillation start at 30 ENS MULTIFUNCTION GENERATOR 4 4 Setting Methods for Main Items MW The phase difference between channels during sync oscillation and 2 phase oscillation can be changed WF1974 only The difference between the phase setting of each channel is the phase difference between channels If CH2 phase setting CH1 phase setting is positive the waveform of CH2 is ahead of the waveform of CH1 as shown in
165. ternal trigger input terminal TRIG IN WE Usage of manual trigger and remote trigger Manual trigger manipulation and remote trigger manipulation are always effective regardless of the trigger source setting MAN TRIG The gt MAN TRIG key can be used for manual trigger manipulation Note that in the case of the WF1974 the MAN TRIG key works for the channel whose display is active For details on the channel whose display is active p 38 To use only manual trigger manipulation and remote trigger manipulation as the trigger set the trigger source to Ext external Also to prevent malfunction due to external noise at this time it is recommended to set the polarity to Off E Trigger delay setting Set the trigger delay time with TrigDly trigger delay on the 2nd page of the setting screen Upon receipt of a trigger oscillation starts following the lapse of the specified time The trigger delay time setting 1s valid both for internal and external Set the trigger delay time for the internal trigger source to 0 The trigger delay time setting is invalid for a manual trigger and a remote trigger When the trigger delay time setting is zero the delay within the unit is minimal but the waveform that is actually output contains a delay ep 140 Following receipt of a trigger no new trigger is accepted until the oscillation of the specified mark wave number has been completed g To start trigger burst Trigger Upon
166. the sweep through fall input Hold resume Hold the sweep through fall input during sweep execution The sweep is resumed from where it was held through rise input during hold W Control input for sequence oscillation mode The following types of control for sequence oscillation can be done with 4 bit logic input 6 2 Basics in the Application Instruction Manual Start or state branch Start control and state branch control can be selected During start control the sequence is started from the beginning through fall input ORed with external trigger input During state branch control the sequence is branched to the specified destination step through low level input upon step completion Stop the sequence through fall input Hold resume Hold the sequence through fall input during sequence execution The sequence is resumed from where it was held through rise input during hold Event branch The sequence is branched to the specified destination step through fall input In the sequence oscillation mode the 4 bit step synchronization code specified for each step 1s output Y Check When not using control input for multi 1 O connector it is recommended to disable control input to prevent malfunction due to external noise ep 94 EE Leege 15 11 Figure 3 5 Multi 1 O Connector Pin Assignment WF1973 WF 1974 E 7 3 PANELS AND I O TERMINALS Table 3 2 Multi l O Connector Function Allocation
167. ther than NF representatives NF CORPORATION WF1973 WF 1974 E 57 If there are any misplaced or missing pages we will replace the manual Contact the sales representative NOTES e Reproduction of the contents of this manual is forbidden by applicable laws The contents of this manual may be revised without notice Information provided in this manual is intended to be accurate and reliable However we assume no responsibility for any damage regarding the contents of this manual e We assume no responsibility for influences resulting from the operations in this manual WF1973 WF1974 Instruction Manual Basics NF CORPORATION 3 20 Tsunashima Higashi 6 chome Kohoku ku Yokohama shi 223 8508 JAPAN Phone 81 45 545 8128 Fax 81 45 545 8187 http www nfcorp co Jp Copyright 2007 NF Corporation http www nfcorp co jp hoy MEF NF Corporation 6 3 20 Tsunashima higashi Kohoku ku Yokohama 223 8508 JAPAN
168. this product are to be performed only by service technicians qualified by NF Corporation A MULTIFUNCTION GENERATOR 2 2 Installation c Repacking When repacking this equipment for transportation etc use a shipping carton of sufficient strength and capacity to safely accommodate the equipment and hold its weight d Options The following options are available and can be purchased separately e Multi 1 O cable PA 001 1318 This cable is used when using the multi I O connector on the rear panel A 2 meter multi core shielded cable is connected to the mini Dsub 15 pin connector Since the opposite side is cut off process that side according to the connection destination For the connector s pin assignment and cable differentiation ep 18 e Rack mount adapters These adapters are for mounting the equipment on a 19 inch IEC EIA standard rack or JIS standard rack Each type of adapter is available as a 1 unit and 2 unit model for side by side mounting for a total lineup of 4 models 2 2 Installation a Installation sites Do not place the equipment with the rear panel facing down because this may damage the connectors and hinder ventilation Place the equipment on a flat surface such as a desk so that the four rubber feet and stands on the bottom side rest on that surface b Installation location conditions e This product uses a fan for forced air cooling and features air intake and exhaust vents on the side and
169. threshold to the 90 threshold of the rising edge The duration time represents the time from the 10 threshold of the rising edge to the 10 threshold of the next falling edge f Other waveform group Waveform Waveform Description and Variable Parameters Name Example Trapezoid Trapezoid waveform with offset in the amplitude direction with offset Leading delay 0 00 to 100 00 of basic period Rising slope width 0 00 to 100 00 of basic period Upper base width 0 00 to 100 00 of basic period Falling slope width 0 00 to 100 00 of basic period Offset 0 00 to 100 00 WF1973 WF1974 EN 7 SPECIFICATIONS Waveform Waveform Description and Variable Parameters Name Example Half sine Pulse whose rise and fall are half sine waveform edge pulse i Leading edge time 0 00 to 100 00 of basic period Trailing edge time 0 00 to 100 00 of basic period Duty 0 00 to 100 00 Bottom Ramp waveform with bottom level as reference referenced Symmetry 0 00 to 100 00 ramp 7 6 Modulated Oscillation Mode 7 6 1 General Modulation type FM FSK PM PSK AM DC offset modulation PWM Modulation source Internal external selectable Internal modulation waveform Other than FSK PSK Sine wave square wave 50 duty triangular wave 50 symmetry rising ramp wave falling ramp wave nolse arbitrary wave FSK PSK Square wave 50 duty Internal modulation frequency Other than
170. ting and Manipulation 4 8 4 Setting frequency sweep For the manipulation methods that are common with the sweep setting screen refer to pp 88 and 86 a Frequency sweep example The following is an example of continuous linear shuttle sweep Shuttle sweep Stop value Sweep value Start value 4 Sweep time oo GE gt Output signal b Selecting frequency sweep Frea When Mode oscillation mode is set to i Frea_ Sweep sweep set Type sweep type J PISE kee Select Freq in on the 2nd page of the setting screen to IDO Of 3 Amptd Type and then Freq frequency 4 0ffset E press the ENTER key c Waveforms for which frequency sweep is not possible Frequency sweep 1s not possible for noise pulse wave and DC d Setting items required for frequency sweep Set the following items on the 2nd page of the setting screen The frequency settings on the 1st page of the setting screen are disabled Start frequency Start The frequency range depends on the waveform Stop frequency Stop The frequency range depends on the waveform e Sweep time Time This is the transition time from the start frequency to the stop frequency p 87 Sweep mode SwpMode Continuous single shot and gated single shot can be chosen from ep 87 Sweep function SwpFctn One way shuttle and linear log can be chosen from ep 86 Setting with Center center frequency and Span span frequency
171. tion and Operation 4 2 2 Switching display format with tabs displaying waveform graph When a number of display formats can be selected a display format switching tab is displayed on the left side of the screen When the Graph tab is displayed on the screen settings can be performed while checking the image of the output waveform a Display format types There are three types of display formats as follows MW Text display Text WF1973 W Graph display Graph or Single WF1974 Displays the settings of one channel in both Displays the settings of 1 channel in text and graph form allowing the image of the text form output waveform to be checked Continuous Sine F Continuous 1 000 000 000 00 Hz 2 000 000 00 Hz 0 100 p p A 0 100 p p me mip 0 000 0 000 deg 0 000 Y 0 000 deg Phase Phase 2 channel simultaneous display Dual WF1974 only Displays the settings of channel 1 and channel 2 in text form vertically superposed Sine The channel to be set can be switched with the 1 000 000 000 00 Hz 0 100 p p Aue Highz CH1 CH2 key 0 000 0 000 deg Continuous Sine 1 000 000 000 00 Hz 0 100 p p 0 000 Y ad 0 000 deg Mode Phase WF1973 WF 1974 27 4 BASIC OPERATION b Switching the display format 1 TETT TIPPA AN 2 000 000 00 Hz screen Is displayed 0 100 Yp p Ma m Ki z 0 000 0 000 deg 2 Continuous 2 000 000 00 Hz 0 100 p p Auto Highz The
172. to elther off or on Normally it is set to off ep 108 Sync output SyncOut This is the output signal from the sync sub output terminal Waveform reference phase synchronization and burst synchronization can be chosen from ep 108 d Waveforms for which auto burst is not possible Auto burst is not possible for noise and DC e Setting items required for auto burst Set Phase oscillation start stop phase on the 1st page of the setting screen Set Markl mark wave number and Space space wave number on the 2nd page of the setting screen Each wave number is normally set to an integer value StpLvl stop level on the 2nd page of the setting screen is normally set to Off off p 108 WF1973 WF 1974 KITA 4 BASIC OPERATION f To start auto burst Automatically starts When in the auto burst mode the mode is set to the burst oscillation mode burst starts automatically However if the burst setting is improper burst oscillation will not start Conflict is displayed in the top right part of the screen When the soft key appearing at the left end is pressed a message about the inappropriate setting is displayed Once the setting has been changed to an appropriate setting burst oscillation starts g Stopping auto burst Not possible Oscillation cannot be stopped in the auto burst mode as is To stop oscillation set BrstMode burst mode on the 2nd page of the setting screen to a sett
173. to the waveform output of this equipment a Connecting the addition signal Connect the addition signal to the external modulation addition input MOD ADD IN BNC terminal on the front panel and the rear panel in the WF1973 and WF 1974 respectively WF1973 WF1974 30MHz MULTIFUNCTION GENERATOR WF1973 Addition signal CH1 CH2 addition signal addition signal For the input characteristics ep 14 This BNC terminal is insulated from the housing and has the same ground potential as the waveform output of the same channel For the floating ground connection ep 19 b Enabling the addition signal The external addition setting is done on the Utility screen 1 Press the MENU key to open the top menu window There select Utility and Oscillator Select Utility in then press the ENTER key to DS the top menu and display the Utility screen a then press the ENTER key Recall Memory 2 On the Utility screen select the Ext Add gt Disable field and then press the ENTER Yalid key Select Ext Add on the Utility screen and then press the ENTER key The external 3 The external addition setting window addition setting opens so select the desired item and then MASON REIS press the ENTER key The external addition condition choice list opens so select the desired condition and then press the ENTER key x2 and edema x10 represent the addition gain addition con
174. trailing edge time and period are mutually constrained by the following equations The duty is converted from pulse width time period leading edge time trailing edge time x 0 85 lt pulse width time pulse width time lt period leading edge time trailing edge time x 0 85 Overshoot 5 or less typ Jitter 500 ps rms or less typ 10 kHz or higher 2 5 ns rms or less typ under 10 kHz 7 5 4 Ramp wave Symmetry setting range 0 00 to 100 00 0 01 resolution 7 5 5 Parameter variable waveforms a Steady sine group VWaverdim Wel Description and Variable Parameters Name Example Unbalanced Waveform for which the amplitudes of the first half cycle and second half sine a cycle of a sine wave can be changed independently First half amplitude 100 00 to 100 00 Second half amplitude 100 00 to 100 00 Clipped Waveform obtained by clipping the top and bottom of the amplitude of a sine sine wave Clip rate 0 00 to 99 99 CF Waveform obtained by extracting only the 90 and 270 neighborhood of a controlled sine wave and expanding the amplitude SE Crest factor 1 41 to 10 00 Conduction Waveform obtained by extracting only the front or back of each half cycle angle R of a sine wave controlled Conduction angle 180 00 to 180 00 Ge Remark In the case of a positive negative conduction angle back front conduction angle Staircase Staircase shaped sine wave SES Number of steps
175. trigger However if the sweep setting is improper no trigger can be received Conflict is displayed in the top right part of the screen When the soft key appearing at the left end is pressed a message about the inappropriate setting is displayed Once the setting has been changed to a suitable setting trigger reception becomes possible MAN TRIG The Start soft key and the manual trigger key on the panel operate like manual trigger regardless of the trigger source setting m To stop sweep Stop soft key When the Stop soft key is pressed during sweep execution the sweep operation stops and the sweep start value output state and not the stop value output state is entered When the Stop soft key is not displayed press the W 2 2 soft key on the right end to switch soft key sets However during single shot sweep and gated single shot sweep sweeping resumes upon receipt of a new trigger n To pause sweep Hold soft key Press the Hold soft key during sweep execution to pause the sweep operation Then when the Resume soft key is pressed the sweep operation resumes from where it was paused If the Hold or Resume soft key is not displayed press the W 2 2 soft key on the right end to switch the soft key sets However during hold for single shot sweep and gated single shot sweep sweeping starts from the start upon receipt of a new trigger The Hold and Resume soft keys are displayed i
176. tting and manipulation This subsection describes the screen configuration used in common for the modulated oscillation mode The settings and manipulations are done on the Oscillator setting screen The Oscillator setting screen is displayed as Oscillator in the top left part of the screen When another screen is displayed press the MENU key to display the top menu then select Oscillator and press the ENTER key a Setting the oscillation mode to modulations 1 Gontinuous di Modulation Select Modula Fa tion in Mode and WWPPL then press the 4 Burst ENTER key Set Mode oscillation mode to Modula tion on the Oscillator setting screen The oscillation mode is switched to modulation as a result In the modulated oscillation mode the setting screen consists of two pages which can be toggled with the NEXT key b 1st page of setting screen Screen for setting the carrier signal This is the modulation carrier signal setting screen which is common to all the oscillation modes Set the oscilla tion mode to Modulation er ER 1 000 000 000 00 Hz 0 100 Vp p Ma High 0 000 Y 0 000 deg Indicates that the 1st page is displayed es ee Press the NEXT i key to display the 2nd page E es See es ee eg l c 2nd page of setting screen Screen for setting the modulation The figure shows an example of selecting FM as the modulation type Modulation width
177. ttings are restored While the equipment power is off even if the power supply is cut off due to the disconnection of the cord or the shutoff of a connected breaker this has no influence on the restore operation the next time the equipment 1s powered on again MULTIFUNCTION GENERATOR 4 1 Power on off Switching and Restoration of Settings e The settings before the equipment was powered off last are restored The output on off settings at power on can be set on the Utility screen p 41 Y Check The previous settings can be restored only if the equipment was powered off using the power switch WF1973 WF 1974 ER 4 BASIC OPERATION b Restoration of settings during power supply on off This applies to switching the power supply on off at one time for this equipment and other embedded devices when this equipment is mounted in a rack When the power supply is cut off while the equipment power is on the equipment power automatically goes on the next time the power supply is reconnected LINE le LINE f Power supply connected Power supply disconnected amp WE FACTORY C MULTIFUNCTY 2 GENERATOR WF1974 Settings Glo ges m A O AAA OOO lt Q z Cw 6 EG CF 6 dodo OREA SER Power on state om wenoo C sameva Gel Settings MMM z 220000 Nee The power is switched on A LINE Power supply reconnected The power is switched
178. vel input field is open the amplitude DC offset display and high low display are toggled each time the OFFSET key is pressed Continuous Sine ES Continuous Sine E 1 000 000 000 00 Hz 1 000 000 000 00 Hz 1 000 VIE 1 000 HE High level input field Low level input field Once the high level or low level field is open the setting procedure is the same as for DC offset When a numeric value is input from the numeric keypad the high level low level setting unit 1s displayed on a soft key The display changes as follows when the high level low level display is switched to Item name Amptd High Offset Low Unit display Vp p Vpk Vrms dBV dBm V gt V Soft key High Amptd Low Offset b AC DC limitation The high level and low level are limited to the range of 10 V to 10 V open The maximum range varies according to the output voltage range setting and the external WF1973 WF 1974 E A 4 BASIC OPERATION addition input setting Sp 54 p 57 4 4 10 Setting the waveform polarity and amplitude range a Setting method Select the 1 Select the polarity amplitude range icon to Continuous E Polarity amplitude the right of the waveform name to display 1 000 000 000 00 Hz a e re the current polarity amplitude range 0 100 Vp p mu mz ge key settings under that icon 0 000 Y Press the ENTER key to open the 0 000 deg The current polarity amplitude range choice list polarity amplitude range is disp
179. waveforms cannot be created on this screen For how to create arbitrary waveforms data fomat and memory size 2 CREATING ARBITRARY WAVEFORMS in the Application Instruction Manual The name changing method is the same as for the setting memory Names of up to 20 characters can be set p 123 WF1973 WF1974 67 4 BASIC OPERATION 3 To apply the changes and quit the selection screen press the OK soft key To discard the changes and quit the selection screen press the Cancel soft key The changes can also be discarded and the selection screen exited by pressing a basic parameter shortcut key the operation differs from that in the parameter variable waveform selection screen 68 MULTIFUNCTION GENERATOR 4 7 Modulation Setting and Manipulation 4 7 Modulation Setting and Manipulation 4 7 1 Modulation types The following eight types of modulation can be done e FM Frequency Modulation en 75 e FSK Frequency Shift Keying This is binary frequency shift modulation p 76 e PM Phase Modulation ep 77 e PSK Phase Shift Keying This is binary phase shift modulation ep 78 e AM Amplitude Modulation ep 79 e AM DSB SC Amplitude Modulation Double Side Band Suppressed Carrier This is AM that does not include the carrier frequency component p 80 e DC offset modulation p 81 e PWM Pulse Width Modulation en 82 WF1973 WF 1974 69 4 BASIC OPERATION 4 7 2 Screen for modulation se
180. weep marker and sweep X drive can be selected from ep 92 WF1973 WF 1974 EN 4 BASIC OPERATION 4 8 3 Common sweep settings and manipulations This subsection describes the settings and manipulations that are used in common regardless of the item to be swept a To set the oscillation mode to sweep Oscillation mode setting On the Oscillator setting screen set 1 Co Mode oscillation mode to Sweep This Select Sweep in changes the mode to the sweep oscillation Mode and then press the ENTER mode key In the sweep oscillation mode the setting screen consists of three pages which can be switched with the NEXT key b To select the item to be swept Sweep type setting The following five sweep items can be selected in Type sweep type on the 2nd page of the setting screen e Frequency sweep Freq sp 95 Sweep type Phase sweep Phase p 97 e Amplitude sweep Amptd ep 99 e DC offset sweep Offset p 101 e Duty sweep Duty ep 103 4 0ffset Ba c To set the sweep range and time Set the following items on the 2nd page of the setting screen Start value Start e Stop value Stop e Sweep time Time This is the transition time from the start value to the stop value For details refer to the description of each sweep type d To set the sweep range with center and span When the start value or stop value input field is open on the 2nd page of the setting screen and the cur
181. wer high level of 2 6 V or higher Maximum allowed input 0 5 V to 5 5 V Polarity Positive negative off selectable FSK and PSK sweep sequence independently settable Minimum pulse width 50 ns Input impedance 10 kQ pulled up to 3 3 V unbalanced Input connector Front panel WF1973 rear panel WF1974 BNC receptacle Manual trigger Panel key operation Applications Used for single shot sweep gated single shot sweep trigger burst gate triggered gate Internal trigger oscillator Independent for sweep and burst Refer to internal trigger oscillator of each section 140 MULTIFUNCTION GENERATOR 7 10 Sequence Number of saved sequences Maximum number of steps Inter channel operation Step control parameters Intra step channel parameters In step operations Step time setting range Jump count setting range Step stop phase setting range Branch operation State branch Event branch Control of step termination Step sync code output Usable waveforms Maximum number of usable waveforms Step start phase Sequence manipulations Sequence external control Input connector Control items 7 10 Sequence 10 sequences saved to non volatile memory Maximum of 255 steps per sequence not including step of pre start status In sequence mode the mode of both channels is the sequence mode Step control is done in common for both channels Step time hold operation jump destination nu
182. wer the duty setting range At 15 MHz the duty is fixed to 50 Extended canis range 0 0000 to 100 0000 independent of the frequency Jitter of 2 5 ns rms or less typ duty can always be changed from 0 to 100 If the high level or low level pulse width is less than 8 4 ns the pulse may at times vanish However on average the duty is equivalent to the set duty e When 0 is set the waveform is fixed on the low level side and when 100 is set it is fixed to the high level side In either case the pulse stops being output d Duty and frequency limitations for standard variable duty range The duty setting range is limited to the following range according to the frequency Frequency Hz 300 000 lt Duty lt 100 Frequency Hz 300 000 For example the variable range at 3 MHz is limited to 10 to 90 If the above limitation according to the frequency setting is not satisfied the duty is adjusted Y Check In the case of the extended variable duty range the pulse may at times vanish and thus the frequency may become lower than the set frequency Do not use the extended variable duty range for applications that require that a constant frequency be maintained 60 MULTIFUNCTION GENERATOR 4 4 Setting Methods for Main Items 4 4 15 Setting the pulse width and leading trailing edge time of a pulse wave The waveform is assumed to be set to Pulse For the waveform setting method ep 44
183. y ME WAVE FACTORY MULTIFUNCTION GENERATOR WF1973 WF1974 Instruction Manual Basics Gy MEF NF Corporation DA00016809 001 MULTIFUNCTION GENERATOR WF1973 WF1974 Instruction Manual Basics Thank you for purchasing the WF1973 WF1974 Multifunction Generator To ensure safe and proper use of this electric equipment please read first Safety Precautions on the following pages Caution Symbols Used in This Manual The following caution symbols are used in this manual Be sure to observe these caution symbols and their contents to ensure the safety of the user and avoid damage to the equipment ANA INN INES This mark indicates information for the avoidance of a hazard such as electric shock that may endanger human life or cause injury during handling of the equipment N CAUTION This mark indicates information for the avoidance of damage to the equipment during handling This manual has the following chapter organization Instruction manuals of the WF1973 WF1974 are divided to two volumes Basics and Application Instructions for remote control GPIB and USB are provided separately If reading this manual for the first time start from 1 OVERVIEW of the Basics Instruction Manual Basics 1 OVERVIEW Briefly describes and explains the features and brief operation principles of the WF1973 WF1974 2 PREPARATIONS BEFORE USE Describes various cautions regarding preparations to be made before using the WF19
184. ycle units set OscStop oscillation stop unit on the 2nd page of the setting screen to HalfCycle half cycle Normally Cycle 1 cycle is set When Cycle 1 cycle is set oscillation is done in integer cycles ep 116 j Usage of stop level The level when oscillation is stopped is normally set with the oscillation start stop phase but 1t can also be set independently from that with a proportion of the amplitude full scale Set StpLvl stop level on the 2nd page of the setting screen to On on and set the level with a value p 112 k Noise triggered gate oscillation Noise having no cycle the gate on period is the oscillation period and the gate off period is the period stop interval Further since noise has no phase the stop level setting is always enabled ep 117 WF1973 WF 1974 121 5 SAVING AND RECALLING SETTINGS 5 1 Saving Settings The current setting conditions can be saved to the setting memory and then recalled for use The setting saving operation is done on the Store Memory screen The settings when the power supply is cut off restored are saved to setting memory No 1 p 24 a Setting saving procedure 1 Press the en MENU key to open the top menu window In this window select Oecillator In the top menu Store Memory and then press the ee select pile ENTER key to display the Store Memory ARB Edit Memory and then press the SE ENTER key Select Memory No in the top left

WF1973/WF1974 Instruction Manual

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