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1. 47 4080 series Arbitrary Function Generator with Counter Instruction Manual CREATING AND EDITING WAVEFORMS Create waveforms by loading waveform data from a text file or by using the graphical tools of this Software Working with text files Waveforms can be imported to or exported from a text file with the following format The first line contains the number of data points the consecutive lines the Y axis value of the sampling points Example wave l txt 8 Line 1 length of the waveform 0 666 Line 2 waveform value of point 0 0 555 Line 3 waveform value of point 1 0 111 Line 4 waveform value of point 2 0 001 Line 5 waveform value of point 3 0 123 Line 6 waveform value of point 4 0 235 Line 7 waveform value of point 5 0 378 Line 8 waveform value of point 6 0 654 Line 9 waveform value of point 7 Only use text editors such as NOTEPAD to create or edit this file Saving and opening text files To save the current waveform as a text file Select File gt Save to and enter a filename To import waveform data select Open from the File menu The waveform data will be automatically displayed in the editing window it Arbitrary Waveform Module of DDS Series Signal Gen Wee Oscilloscop ES2S2 Set Standard Waveform Math Waveform View Other renos Current Position Ctrl 5 Dave ox 54 Y 0 99 4080 series Arbitrary Function Generator with Counter Instruction Man
2. 1 4 3 Display areas 1 Waveform Indication 2 Main Alphanumeric Display 3 Frequency Measurement Totalize Settings 4 Instrument states 12 4080 series Arbitrary Function Generator with Counter Instruction Manual Waveform states Ay Sine waveform is enabled main waveform L Square waveform is enabled main waveform xy Triangle waveform is enabled y Ramp waveform is enabled Arb Arbitrary waveform mode is enabled Frequency Measurement Totalize states Filter Low Pass Filter is enabled ATT Input Attenuator is enabled GATE Gate received trigger Function Generator states Adrs The instrument is in remote state Trig Function Generator 1s waiting for a single trigger or external trigger FM FM modulation is enabled AM AM modulation is enabled Sweep Sweep mode is enabled Ext Generator is configured for external signal input Freq Frequency measurement function is enabled Count Totalize function is enabled FSK FSK frequency shift keying modulation is enabled 4FSK PSK modulation is enabled Burst Burst mode enabled Offset DC offset of output signal is not 0 Shift Shift key has been pressed Shift mode is active Rmt The instrument is in remote state 3 13 Description of front panel keys shift key Access secondary functions or to enter units seconds Vpp and N Numerical key pad Keys are used for direct entry of numerical values Keys 0 e 1 are assigned
3. AM Characteristics Carrier Waveforms sine or square Carrier Frequency Range same as main waveforms Modulation Source internal or external Modulating Waveform 5 internal waveforms sine square triangle rising falling ramp Frequency of modulating signal 100u Hz 20kHz Distortion lt 2 Modulation Depth 1 120 1 80 frequency gt 40MHz Ampl gt 2Vpp into open circuit Modulation Error 5 0 2 100uHz lt frequency lt 10kHz 10 2 10kHz lt frequency lt 20kHz Amplitude of ext input signal 3Vp p 1 5V 1 5V FM Characteristics Carrier Waveforms sine or square Carrier Frequency Range same as main waveforms Modulation Source internal or external Modulating Waveform 5 internal waveforms sine square triangle rising falling ramp Frequency of modulating signal 100uHz 10kHz Peak Frequency Deviation Max 50 of carrier frequency for internal FM Max 100kHz carrier frequency gt 5MHz for external FM with input signal voltage 3Vp p 1 5V 1 5V FSK Characteristics Carrier Waveform sine or square Carrier Frequency Range same as main waveforms Control Mode internal or external trigger external TTL level low level Fl high level F2 FSK Rate 0 lms 800s PSK Characteristics Waveform sine or square Frequency Range same as main waveforms PSK Phase 1 P1 and Phase 2 P2 range 0 0 360 0 Resolution 0 1 PSK rate 0 1ms 800s 4080 series Arbitrary Function Generato
4. Modulation Pulse and Sweep Mode In this mode the generator operates like a conventional function generator and the Arb annunciator is turned off The user can select one of the modulation modes AM FM FSK PSK Burst or sweep mode The 2 main waveforms sine and square can be used as carrier signal There is a close reciprocal relationship between the modulation sweep mode and the standard 18 4080 series Arbitrary Function Generator with Counter Instruction Manual waveform mode used to set the sine or square wave parameters When one of the modulation modes is active the parameters of the carrier wave are carried over from the Standard Waveform Settings for sine or square Press shift SW to toggle between any of the modulation sweep modes to set the modulation parameters and the standard waveform mode to define the carrier settings for frequency amplitude and DC offset On the other hand the carrier frequency can also be set in the modulation sweep menus and if changed will overwrite the standard waveform frequency setting Example When transitioning from standard waveform mode to FM modulation mode by pressing the FM button the parameters set previously in SW mode carry over to the FM mode and are now defining the FM carrier If the FM carrier frequency in the FM modulation menu is changed it will also overwrite the frequency setting of the standard waveform settings To adjust the d
5. gt FM FREQ gt FM WAVE gt FM SOURCE FM DEVIA Peak frequency deviation FM FREQ Frequency of modulating signal FM WAVE Waveform of modulating signal FM SOURCE Toggle between internal or external modulating signal Each time you press the menu key the parameter will flash for 1 second followed by the value of that parameter FM modulation parameters can be entered directly or via the knob Once the parameter is set press menu to advance to the next parameter Peak frequency deviation FM DEVIA Explanation The variation in frequency of the modulating waveform from the carrier frequency center frequency Range of deviation For internal FM modulation the maximum value should not exceed 50 of the carrier frequency In external FM mode the maximum deviation is 10 of the carrier frequency Additionally the frequency deviation plus carrier frequency should not exceed the maximum operating frequency of the instrument F Fa lt Emax 100 kHz For Fmax refer to the specifications for main waveforms This parameter applies only when FM SOURCE is set to INTernal Modulating signal frequency FM FREQ The frequency range of the modulating signal is 100uHz 10kHz This parameter applies only when FM SOURCE is set to INTernal Modulating signal waveform FM WAVE Waveform of the modulating signal Waveforms sine square triangle rising and falling ramp can be used as the modula
6. modulating signal frequency 5kHz modulation depth 50 Press AM activate AM modulation Press frequency then 1 MHz set carrier frequency Press amplitude then 2 V set carrier amplitude Press shift then square set carrier waveform Press menu select AM LEVEL press 5 0 EN set modulation depth Press menu select AM FREQ press 5 kHz set modulating signal frequency Press menu select AM WAVE press 1 IN set AM wave as sine Press menu select AM SOURCE press 1 IN set AM source to internal 4 6 4 Burst modulation You can configure the function generator to output a waveform with a specified number of cycles called a burst You can output the burst at a rate determined by the internal rate generator or an external signal applied to the rear panel connector The function generator can produce a burst using sine or square waveforms Press Burst to enter into burst mode The carrier frequency and the Burst annunciator are displayed Frequency amplitude waveform and DC offset of the carrier signal can be set as 28 4080 series Arbitrary Function Generator with Counter Instruction Manual described in the previous section of this chapter The parameters carry over from the parameter settings of the main waveforms sine and square Press the menu key repeatedly to cycle through the burst menu parameters listed below TRIG COUNT T
7. Direct entry using the numerical key pad Use the numerical keypad to enter a number with the appropriate unit Enter numbers from left to right Use the e key to enter a decimal point Enter for negative numbers Repeatedly pressing this key will toggle between positive no sign visible and negative numbers Numerical entries do not update the output signal until a unit key has been pressed Once you entered the correct numerical value press the appropriate unit key to assign a unit and to make the entry effective The instrument will now output a signal according to the displayed data For entries not associated with a unit press the shift key N no unit to make the entry effective Note Numerical values entered via the keypad are not effective until a valid unit key or shift N has been pressed 20 4080 series Arbitrary Function Generator with Counter Instruction Manual Entry of invalid key presses or invalid values If the entered value exceeds the rated range a beep sound will be heard If the entered value 1s below the lower limit the instrument will automatically change the entry to the lowest possible value If the entered value exceeds the upper limit the instrument will automatically revert to the maximum value Example When trying to entering 90MHz in a model 4086 80 MHz max a beep will be heard and the value will be forced to 80 MHz Invalid keys A beep sound will inform the user tha
8. TRANSFERING WAVEFORM DATA TO THE 408XAWG RS232 communication setup 1 Connect the computer to the 4084AWG or 4086AWG using the RS232 cable included 2 Set the RS232 parameters of the Arbitrary Waveform Creation Tool 3 Set the RS232 parameters in the Systems menu of the 4080 series generator Make sure the COM port Baud rate and parity and Flow control parameters match that of the Software settings bitrary Waveform Module of DDS Series Signal Generator Oscilloscop MAs a Standard Waveform Math Waveform View Other J o o if E COM a Waveforms Mumber Baud d 1 J Hone amp Bits X 50 Y 9 969 hd Odd T Bits Flow Control set Address Even Y Bits O Start 10 xo O 0 Y 10 S 0 O i iO 10 l 20 9 40 8 60 7 0 6 100 4 120 4 140 5 160 2 130 1 200 Select a memory location Models 4084AWG and 4086AWG offer 8 memory locations for storing user defined arbitrary waveforms Numbers 8 in the waveform number field of the software correspond to ARB1 ARB8 on the instrument side which are located at positions 28 to 35 on the Arblist see chapter 4 section 3 Arblist location Press lt Shift gt Display Name ARB2 ARB4 ARBA O Transfer of waveform in current editing area Initiate a waveform transfer to the 4080 series generator by clicking the Send Data button or Selecting Other gt Send Data from the menu A pop up window will indic
9. The display name for these waveforms is ARB1 ARB8 These memory locations can be accessed in one of 2 ways a Enter the ArbList then use the knob or the numeric keypad to enable waveforms ARB1 ARB8 b Press Shift followed by any number between 1 8 Example Press Shift 2 to enable waveform stored in memory location ARB2 19 4080 series Arbitrary Function Generator with Counter Instruction Manual Table of stored waveforms ArbList and their memory locations 6 Noise NOISE 20 Exponential function EXP 8 Positive pulse P PULSE 22__ SINX X function SINXXX 9 Negative pulse N PULSE 23 Square root function SQU ROOT ie e COMMUT_FU 28 35 Yser Programmable pp A Rpg rectified a Arbitrary waveforms Note No 28 35 memory location for user programmable waveforms models 4084AWG and 4086AWG only Refer to chapter 7 for more details 4 4 Data entry Using the arrow keys and the knob Use the knob and arrow keys to modify the displayed number KAN 2 Use the 4 keys to move the flashing digits left or right then adjust the value with the knob Using this method of entry the output signal will be updated immediately Move the arrow keys left for coarse adjustment and right for fine adjustment To disable the knob use the 4 gt key to move the cursor all the way to the left or right until the digits stop flashing Now data entry via the knob 1s disabled
10. avoid electrical shock hazard disconnect power cord before removing covers Refer servicing to qualified personnel CAUTION Before connecting the line cord to the AC mains check the rear panel AC line voltage indicator Applying a line voltage other than the indicated voltage can destroy the AC line fuses For continued fire protection replace fuses only with those of the specified voltage and current ratings 4080 series Arbitrary Function Generator with Counter Instruction Manual Table of Contents ls PRODUCTIIIN PRODUCTION a ai srl 5 Be TSS CUD FOIA A an O e PERE EE EOI A n eee eae ee 5 A O senate ends tant aa 5 2 SPECIFICATIONS a a cas 6 ZN WIIG COT int 6 22 MIES C Ni dial cid 9 SEA ds 10 Ja PANEL DES CRIP TION adsl 11 A A adnate 11 Jlr Overview OL o ode io al 11 31 2 DIPAYANA OLS id 12 3 1 3 Description of front panel keyS oooocccccccnnnnncnnnnnnnnononononnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnns 13 Lo Description of menu parameters sisend aa i a a iaa 14 DZ EAE Panek mosen O 17 ACRE RATING INSTRUCTIONS 20d a cimeneesal ceed 18 AA SMa CACO title tall S iat an ete fy 18 4 2 Waite O PETAL O Modest lor 18 ALO WWE LOLAS ce CHO td ctricos 19 AA Data A A a anthem siden ds 20 AS Output Coni CUP AON ipsa eel he a O do dd o de a 21 A Ser RreGuency and Pernod onson olas 21 ES AO A O A O A 21 SAA a A 22 AeA UST Ady Cy Erne A E acenan ee cetrenecaes 2 A a A M E Eae a T E it tio 23 A oS enal Sorc ale Reca gran dani di 23
11. carrier frequency Press amplitude then 2 V set carrier amplitude Press Shift and square set carrier waveform Press menu select FM DEVIA enter 2 0 0 kHz set FM deviation Press menu select FM FREQ press 51 kHz set FM frequency Press menu select FM WAVE press 1 N set FM waveform as sine Press menu select FM SOURCE press 1 N set FM source as internal 4 6 3 AM modulation AM stands for amplitude modulation Press AM to enable AM modulation The carrier frequency and the AM annunciator is displayed Frequency amplitude waveform and DC offset of the carrier signal can be set as described in the previous section of this chapter The parameters carry over from the parameter settings of the main waveforms sine and square In AM only sine and square waves can be selected for carrier Press the menu key repeatedly to cycle through the AM modulation parameters listed below AM LEVEL gt AM FREQ gt AM WAVE gt AM SOURCE AM LEVEL Modulation depth AM FREQ Frequency of modulating signal AM WAVE Waveform of modulating signal AM SOURCE internal or external modulating signal In AM mode to ensure normal signal output at 100 modulation depth the instrument reduces the peak to peak value of the carrier by 50 Only sine and square waves can be selected as AM carrier 27 4080 series Arbitrary Function Generator with Counter Instru
12. knob Once the parameter is set press menu to advance to the next parameter Sweep mode MODE parameter Select LINear No 1 or LOGarthimic No 2 In linear sweep mode the output frequency changes in a linear fashion during a sweep whereas in LOG mode the frequency changes exponentially The spacing is calculated automatically based on start frequencies stop frequencies and sweep time Start frequency START F The frequency where the sweep starts 1s the start frequency After displaying START F for 1 second the current start frequency 1s displayed automatically and can be modified via knob or direct data entry By default the start frequency will carry over from the setting for the main wave form Stop frequency STOP F The sweep stops at the frequency STOP F When the start frequency 1s lower than the stop frequency the frequency sweep increases gradually from start frequency low frequency to stop frequency high frequency When the start frequency is higher than stop frequency the frequency sweep decreases gradually from the start frequency high frequency to stop frequency low frequency 24 4080 series Arbitrary Function Generator with Counter Instruction Manual The frequency range from start frequency to stop frequency is lu Hz Fmax in linear sweep mode and 1mHz Fmax in log sweep mode Fmax see specification section for main waveform Sweep time TIME The time need
13. of output using APPLy or FUNCtion FREQuency VOLTage VOLTAGE OFFSet instructions 2 To set modulating waveform of FM using FM INTernal FUNCtion SINusoid SQUare TRIangle instructions To set modulating frequency of FM using instruction FM INTernal FREQuency lt frequency gt To set the modulating deviation of FM using instruction FM DEViation lt peak deviation in Hz gt To set modulating source of FM using the FM SOURce INTernal EXTernal instruction To start FM using FM STATe ON instruction Nn Bu FM DEViation lt peak deviation in Hz gt Set the modulating deviation of FM The maximum value should be half of carrier frequency in internal modulating source and 10 of carrier frequency in external modulating frequency Should also satisfy the following equation F Fa lt EFmax 100khz FM DEViation Read the current modulating deviation of FM FM INTernal FUNCtion SINusoid SQUare TRIangle Set the modulating waveform of FM using SIN SQU TRI UP RAMP or DOWN_RAMP waveforms FM INTernal FUNCtion Read the current modulating waveform of FM The returned data are SIN SQU TRT UP RAMP DOWN RAMP 41 4080 series Arbitrary Function Generator with Counter Instruction Manual FM INTernal FREQuency lt frequency gt Set the frequency of modulating signal of FM The modulating frequency should be lt 10KHz when internal modulating source is selected FM INTernal FREQu
14. pass filter before being passed onto the counter circuit The word Filter appears on the right display field to indicate that the Low Pass Filter is active Attenuation Press Shift ATT to activate the attenuator which attenuates the input signal by a factor 10 1 ATT is displayed on the right to indicate that the input attenuator is active 34 4080 series Arbitrary Function Generator with Counter Instruction Manual 5 REMOTE INTERFACE REFERENCE 5 1 Introduction An Introduction to the SCPI Language SCPI Standard Commands for Programmable Instruments is an ASCII based instrument command language designed for test and measurement instruments SCPI commands are based on a hierarchical structure also known as a tree system In this system associated commands are grouped together under a common node or root thus forming subsystems A portion of the SOURCE subsystem is shown below to illustrate the tree system SOURCce FREQuency STARt lt frequency gt MINimum MA Ximum FREQuency STARt MINimum MA Ximun FREQuency STOP lt frequency gt MINimum MA Ximum FREQuency STOP MINimum MA Ximum SOURce is the root keyword of the command FREQuency is the second level keywords and STARt and STOP are third level keywords A colon separates a command keyword from a lower level keyword Preparations for Remote Operation The Arbitrary Function Generator series 4080 can be remotely controlled fr
15. phase of the burst FSK modulation START F Primary frequency same as carrier wave STOP F the second frequency hop frequency SPACE T FSK rate TRIG Select trigger source external or internal PSK modulation P1 gt P PACE T gt TRIG PI phase value 1 pa phase value 2 15 4080 series Arbitrary Function Generator with Counter Instruction Manual SPACE T PSK rate TRIG trigger mode internal or external System Function Mode POWER ON gt ADDRESS gt OUT Z gt INTERFACE gt POWER ON Power on state ADDRESS set GPIB address option OUT Z Configure amplitude display value for 500 or high impedance load termination INTERFACE Select RS232 or GP IB IEEE 488 interface option BAUD Baud rate for the RS232 interface PARITY Parity and Data Bits configuration for RS232 16 4080 series Arbitrary Function Generator with Counter Instruction Manual 3 2 REAR PANEL Ext Trig ce Meas Add OT CAUTION Line 47Hz 53Hz 35VA MAX FSK Burst SOO FOR CONTINUED PROTECTION SES AGAINST FIRE HAZARD REPLACE o O A gir FUSE ONLY WITH SAME TYPE 1 0 AND RATING dl 65122851 3 NANJING SAMPLE INSTRUME TECHNOLOGIES CO LTD RS232C ical 110V 99 121V Fuse 1AT 198 242V Fuse 500mAT Ext Trig FSK Burst Input Terminal for external trigger signals for FSK PSK Burst modulation and sweep mode MOD In Apply modulating signal for AM and FM
16. the software to check the communications link between software and oscilloscope A pop up window will indicate successful communication otherwise the operation will result in an error message This operation will also automatically populate the waveform length field based on the oscilloscope s internal storage memory 5 Select the Source of the data to be read from the oscilloscope 6 Select the desired data source from oscilloscope menu gt Source Refer to your oscilloscope s user manual for data sources available ik Arbitrary Waveform Module of DDS Series eee Reese Set Standard Waveform Math Wavefo EOL String Go smor q C Set Link 1 00 Read Data CHE 0 50 0 60 0 40 0 0 0 00 0 20 7 Read the oscilloscope data from the source selected Click on read data in sub menu oscilloscope A pop up window will appear to display the current status of the transfer The pop up window will automatically disappear once transmission was completed successfully and the downloaded data will automatically be displayed in the Software s editing window 4080 series Arbitrary Function Generator with Counter Instruction Manual Requirement for RS232 cable connecting the TEKTRONIX oscilloscope and 408xAWG Refer to the oscilloscope s instruction manual For the TEKTRONIX series digital storage oscilloscopes a null modem cross over using 2 handshake lines is recommended Oo 0 10D Ur BW N VO 0 1
17. this Software The data can originate from the oscilloscope s screen display channel 1 or channel 2 or internal memory where the reference waveform from channel 1 or 2 is stored The Software is compatible with TDS1000 TDS2000 TPS2000 and TDS3000 series oscilloscopes equipped with a RS232 interface Download instructions 1 Connect the computer and digital storage oscilloscope DSO using an RS232 cable 2 Set the communications parameters for the DSO Refer to the oscilloscope s manual for setup instructions Make sure that the RS232 parameters under menu RS232 set match that of the Arbitrary waveform Creation Software Additionally set the EOL or End of Line string in the oscilloscopes menu Supported termination strings are lt CR gt LF or a combination of the two lt CR gt lt LF gt or lt LF gt lt CR gt 3 Set the RS232 parameters and EOL string on the Software side Make sure parameters communications address Baud rate parity flow control and EOF character string matches that of the oscilloscope settings 54 4080 series Arbitrary Function Generator with Counter Instruction Manual ft Arbitrary Waveform Module of DDS Series S standard Waveform Math Wawerform lure Set Link Source k LF CR J Eead Data CRLF s0 0 60 0 40 0 0 0 00 0 20 0 40 0 60 O 60 1 00 4 Click Set Link in the oscilloscope menu of
18. 0D Ur E U Ny 4080 series Arbitrary Function Generator with Counter Instruction Manual 7 APPENDIX BK PRECISION Declaration of CE Conformity according to EEC directives and NF EN 45014 norm Responsible Party Alternate Manufacturing Site i B8K Precision Corporation B amp K China 1364 Manufacture s Address 22820 Savi Ranch Pkwy Yorba Linda CA 92887 4610 USA Declares that the below mentioned product Product Name Function Arbitrary Generator with Counter Part Numbers 4084 4084AWG 4085 4086 4086AWG 4087 complies with the essential requirements of the following applicable European Directives Low Voltage Directive 73 23 EEC 19 02 73 amended by 93 68 EEC 22 07 93 Electromagnetic Compatibility EMC 89 336 EEC 03 05 88 amended by 92 68 EEC 22 07 93 and conforms with the following product standards LVD EN61010 1 2001 EN61010 031 2002 EMC EN61326 1997 A1 1998 A2 2001 A3 2003 EN55022 1998 A1 2000 A2 EN61000 3 2 2000 EN61000 3 3 1995 A1 2001 EN55024 1998 A1 2001 A2 2003 This Declaration of Conformity applies to above listed products place on the EU market after F ada FO haga January 31 2007 pira Pat a Date Victor Tolan President gt 4080 series Arbitrary Function Generator with Counter Instruction Manual Service Information Warranty Service Please return the product in the original packaging with proof of purchase to the address below Clearly state in writing the
19. 4 6 Set Modulation and Sweep Parameters isitici a 24 A Oy SWEEP MOUS Se A N Aa 24 AO Z FNI OGU AMON tes sss ir is 26 AOSAN MOda oN aea Sg eee doth are osha detice dalle Aa et eet dat 27 A OA Burst O e de O 28 AOS FS IMO GU ALTO Mi A A e a 30 B60 BS MO GU ALON skates catia is 31 AF SEU SYSLEML Parameters cn a a 32 eo Unversal Cb a lt 3 eee tee Benne ERR Ui Re ne Re ee ee teen RICE ree Oren er ne eer ee 34 REMOTE INTERFACE REPE RENO Bruni dl 35 Sl OO dC ros 35 5 2 Overview and syntax of SCPI INStructiODS oocccccnocccncnnnnnnenennnnnnnnnnnnnninnnnnncnannannnannnos 35 5 3 Detailed description of SCPI Instructions ooooooooooooooocnnnnnnnnnnnnnnnnnnonononnnnnnnnononnnnnnnnnnnnnnnnos 39 6 USER PROGRAMMABLE ARBITRARY WAVEFORM MODULE cccccnnnccnoconnnnnnnnnnnnnnnnns 47 T APPEND IDX a O coa 57 A Declaration OCIO eeen a a n A E E EAER 58 B Service and Warranty Informations oen e Si le eee 57 4080 series Arbitrary Function Generator with Counter Instruction Manual Intentionally left blank 4080 series Arbitrary Function Generator with Counter Instruction Manual 1 PRODUCT INTRODUCTION 1 1 Description The B K Precision 4080 Series are laboratory grade synthesized function generators with a wide frequency range of up to 120 MHz Direct digital synthesis DDS techniques are used to create stable accurate output signals for clean low distortion sine waves and an extensive selection of built in standard and arbitrary wavefo
20. Direct Digital Synthesis DDS architecture e Wide frequency range of 1uHz 120MHz model 4087 sine wave only e Clean and stable output of very small signals down to ImV 50Q e 27 build in standard and complex waveforms e Eight downloadable 16000 point memories for custom arbitrary waveforms models 4084AWG and 4086AWG only e Graphical Arbitrary Waveform Generation Software tool for Microsoft Windows models 4084AWG and 4086AWG only e Convenient data input via knob or numerical keypad e Bright easy to read display using VFD Visible Vacuum Fluorescent technology e Fully programmable via SCPI compatible command set e 100 MHz Universal Counter with frequency measurement and totalize function 4080 series Arbitrary Function Generator with Counter Instruction Manual 2 SPECIFICATIONS 2 1 Function Generator Waveform Characteristics Main Waveforms Sine square Waveform Amplitude resolution 12 bits Sample Rate 200MSa s 4084 4084AWG 4085 4086 4086AWG 300MSa s 4087 Sine Harmonic Distortion of Sine Wave lt 50dBc frequency lt 5MHz 45dBc frequency lt 1OMHz 40dBc frequency lt 20MHz lt 35dBc frequency lt 40MHz lt 30dBc frequency gt 40MHz Total Harmonic distortion 0 1 20Hz 100kHz Square Rise and Fall Time of Square Wave lt 15ns A IAIA I Note Test conditions for harmonic distortion sine distortion rise fall time Output Amplitude 2Vp p Environmental t
21. INSTRUCTION BK IANA MANUAL ECIS J FUEL YG 4080 Series Functi nction and Arbitrary Function Generators Mod el 4084AWG 4086AWG 4084 4085 4086 4087 TTT E fy TORE ECG y P T iE 4080 series Arbitrary Function Generator with Counter Instruction Manual Safety Summary The following safety precautions apply to both operating and maintenance personnel and must be observed during all phases of operation service and repair of this instrument Before applying power follow the installation instructions and become familiar with the operating instructions for this instrument Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design manufacture and intended use of the instrument B amp K Precision Corporation assumes no liability for a customer s failure to comply with these requirements This is a Safety Class I instrument GROUND THE INSTRUMENT To minimize shock hazard the instrument chassis and cabinet must be connected to an electrical ground This instrument is grounded through the ground conductor of the supplied three conductor ac power cable The power cable must be plugged into an approved three conductor electrical outlet Do not alter the ground connection Without the protective ground connection all accessible conductive parts including control knobs can render an electric shock The power jack and mating plug of the power cabl
22. ME SWEep SOURce INTernal EXTernal SWEep SOURce SWEep STATe ON OFF SWEep STATe COUNT instructions SOURce FUNCtion TOTal INITial FUNCtion TOTal STARt FUNCtion TOTal STOP FUNCtion TOTal CLEAr FUNCtion TOTal FREQUENCY MEASUREMENT instructions SOURce FUNCtion FREQuency MEASure FUNCtion FREQuency FUNCtion FREQuency GATE lt time gt FUNCtion FREQuency GATE TRIGGER instructions TRIGger SOURce IMMediate EXTernal BUS TRIGger SOURce SYSTEM instructions 4080 series Arbitrary Function Generator with Counter Instruction Manual IDN RST SAV 0 1 213 4 5 6 7 8 9 107 RCL 0 1 2131415 6 7 8 9 10 RS232 specific instructions SYSTem LOCAL SYSTem REMOTE 5 3 Detailed description of SCPI Instructions APPLy instructions APPLy instructions are used to directly set the output of the function generator through the remote interface including waveform frequency and offset For example to output a sine wave of 5kHz 3Vp p with 2 5V DC offset the following commands need to be sent APPL SIN 5 KHZ 3 0 VPP 2 5 V APPL SIN 5 0E 3 3 0 2 5 Instructions of lower level can also be used FUNC SHAPE SIN to output a sine wave FREQ 5 0 KHZ to set frequency as 5kHz VOLT 3 0 to set voltage as 3 VPP VOLT OFFSET 2 5 to set output offset as 2 5 V APPLy Queries the waveform frequency amplitude and offset of current function output The returned data format i
23. Move arrow key to Select Arblist right waveform e ane eee Select pulse Direct number entry Press this key to clear the least significant bit of the displayed number Useful for correcting number entry before entry is confirmed with unit key External totalize mode Press this key to stop counting and display present counting value Press again to resume counting 11 4080 series Arbitrary Function Generator with Counter Instruction Manual External totalize mode Press this key to reset and resume event counter models 4084AWG and 4086AWG only Function Mode Keys aa Secondary Key name Main Function y Function for Unit Entry Function Counter Mode Toggle between Freq Period Frequency amp Enable Sine Wave Not Available Not Available Period AMD E ulse Amplitude Select IA Not Available Not Available width Wave FSK PSK ee E Not Available Not Available Function Select Wave FM Enable EM mode Enter Storage Attenuation pa menu Selection AM Enable AM mode Enter Recall menu Low Pass Select Enable Sweep Enter Counter Freq Meas Other Keys Other Function Output Main OUTPUT signal On Off Generate single trigger in sweep and burst mode Select secondary function Enter units in s Vpp N 3 1 2 Display Annunciators o Arb in a 1G Kt PK i M M M i MG Mat CN AN UN ZN UN ZN ZN UN ZN VIN ZN UN Zi qi
24. OFF or 1 ON It returns to fixed frequency mode in off state PSK Mode instructions 1 To set the output waveform amplitude DC offset and frequency using APPLy instructions or FUNCtion FREQuency VOLTage VOLTAGE OFEFSet instructions To set phase lof PSK using PSKey PHASel lt degrees gt instruction To set phase 2 of PSK using PSKey PHASe2 lt degrees gt instruction To set time interval of phase switching using PSKey INTernal SPACe lt time gt instruction To set trigger source of PSK using PSKey SOURce INTernal EXTernal instructions To turn on PSK using PSKey STATe ON instruction A ee FSKey PHASel lt degrees gt Set phase of PSK in 0 360 PSKey PHASel Check phase lof PSK PSKey PHASe2 lt degrees gt Set phase 2 of PSK in 0 360 PSKey PHASe2 Check phase 2 of PSK 43 4080 series Arbitrary Function Generator with Counter Instruction Manual PSKey INTernal SPACe lt time gt Set time interval of phase switching PSKey INTernal SPACe Check time interval of phase switching PSKey SOURce INTernal EXTernal Set trigger source of PSK as internal INTernal or external EXTernal PSKey SOURce Check current trigger source of PSK PSKey STATe ON OFF Turn on PSK mode ON or turn of f PSK mode OFF PSKey STATe Check the on off state of PSK mode The returned data are 0 OFF or 1 ON It returns to fixed frequency mode in off state Sweep M
25. RIG Trigger source COUNT Number of cycles SPACE T Burst time spacing PHASE The starting phase of the burst Select trigger source TRIG Three trigger sources are available Internal trigger and 2 types of external triggers sources external gated and single The corresponding menu parameters are 1 INT 2 EXT and 3 SINGLE The default is internal triggering a Internal trigger When the internal trigger source is selected the frequency at which the burst is generated depends on parameter SPACE T burst count and the burst carrier frequency b Single trigger mode Generate a single trigger event by pushing the output key once or by applying a single TTL pulse at the Ext Trig input terminal in the rear panel A single burst with predefined parameters will be generated c External gated burst mode The TTL signal applied to Ext Trig input terminal in the rear panel will enable or disable the output of the generator When the TTL level of the gate signal is high the generated will generate burst pulses according to the parameters of the set carrier frequency Burst parameters COUNT and SPACE T are ignored in this mode Anunciators Trig and Ext turn on when this mode is active Burst count COUNT Definition The number of cycles to be output per burst Range 1 10000 cycles in 1 cycle increments Additionally the minimum number of cycles must also satisfy F 50khz 1 Parameter does not
26. SOURce INTernal EXTernal AM SOURce AM STATe ONJOFF AM STATe SOURce FM DEViation lt peak deviation in Hz gt FM DEViation FM INTernal FUNCtion SINusoid SQUare TRlanglelUP_ RAMP DOWN_ RAMP FM INTernal FUNCtion FM INTernal FREQuency lt frequency gt FM INTernal FREQuency FM SOURce INTernal EXTernal FM SOURce FM STATe ON OFF FM STATe SOURce BM NCYCles lt cycles gt BM NCYCles BM PHASe lt degrees gt BM PHASe BM INTernal Space lt time in second gt BM INTernal Space BM SOURce INTernal EXTernal SINGle BM SOURce BM STATe ON OFF BM STATe FSK instructions SOURce FSKey FREQuency lt frequency gt FSKey FREQuency FSKey INTernal Space lt time in second gt FSKey INTernal Space FSKey SOURce INTernal EXTernal FSKey SOURce FSKey STATe ON OFF FSKey STATe PSK instructions SOURce PSKey PHASel lt degrees gt PSKey PHASel1 PSKey PHASe2 lt degrees gt PSKey PHASe2 PSKey INTernal Space lt time in second gt PSKey INTernal Space 37 4080 series Arbitrary Function Generator with Counter Instruction Manual PSKey SOURce INTernal EXTernal PSKey SOURce PSKey STATe ONJOFF PSKey STATe SWEEP instructions SOURce FREQuency STARt lt frequency gt FREQuency STARt FREQuency STOP lt frequency gt FREQuency STOP SOURce SWEep SPACing LINear LOGarithmic SWEep SPACing SWEep TIME lt time in second gt SWEep TI
27. a Clearing the waveform To clear all waveforms in the editing area click the Clear waveform button Zoom function To enlarge an area of the waveform click on the zoom in symbol then use the scroll bar below the editing window to view the desired area You can also use View gt Zoom in To zoom out click on the zoom out symbol on the tool bar or select use View gt Zoom Click the 1 1 symbol to restore the default view Direct waveform entry Accurate input of point values Define a point by entering the X and Y coordinates in the start point field then click Set point to complete the entry The value of this point will be recorded and displayed in the drawing area Accurate input of line segments To define a straight line segment enter the corresponding X and Y coordinates of the starting point of this line segment in the start point field Enter the X and Y coordinates for the stop point of the line in the stop point field Click set line The value of this line segment will be automatically calculated and displayed in the drawing area Generating standard waveform 6 standard waveforms can be generated square sine cosine triangle rising and falling ramp Select a waveform from the standard waveforms menu The waveform will be displayed immediately in the editing window 50 4080 series Arbitrary Function Generator with Counter Instruction Manual i
28. a comparator configured as a Schmitt Trigger The TTL signal will transition to high or low once the main output signal exceeds a certain threshold value which causes a time delay between the main output signal and the TTL signal 4 5 6 Signal Store and Recall Up to 10 different instrument states can be stored in non volatile memory This enables you to recall the entire instrument configuration with a single command from the remote interface or with just a few key presses from the front panel The state storage feature remembers the function including arbitrary waveforms frequency amplitude DC offset duty cycle as well as any modulation parameters To recall a stored state you must use the same memory location used previously to store the state The last state of the instrument before power off is automatically stored in location 0 therefore a total of 11 groups locations ranging from 0 10 can be recalled Example Store the current output signal in group location 1 Shift Store 1 N The following prompt will be displayed for a few seconds STORE 1 Previously stored signal configurations will be overwritten To recall group location 1 and make it the active output signal Press Shift recall 1 N The following prompt will be displayed for a few seconds RECALL 1 The stored signals can be continuously recalled and reproduced by scrolling through each location using the knob 23 4080
29. an configure the function generator to shift its output phase between two preset values using PSK modulation The rate at which the output shifts between the two phases is determined by the internal rate generator or the signal level applied to the trigger input terminal on the rear panel Press FSK PSK twice to enter phase shift keying PSK mode The carrier frequency will be displayed along with the symbol and FSK Frequency amplitude waveform and DC offset of the carrier signal can be set as described in the previous section of this chapter The parameters carry over from the parameter settings of the main waveforms sine and square If FSK mode was already active press this key only once this key toggles the modulation between FSK and PSK mode In FSK mode only sine and square waves can be selected as a carrier signal Press the menu key repeatedly to cycle through the burst menu parameters listed below PACE T gt TRIG P1 Phase value 1 31 4080 series Arbitrary Function Generator with Counter Instruction Manual P2 phase value 2 SPACE T PSK rate TRIG Trigger source for PSK Trigger source TRIG Select internal signal and external input signal 1 INT or 2 EXT The default of the instrument is internal In internal mode the phase of the output signal shifts according to the PSK rate parameter In external trigger mode the trigger signal is applied to the Ext Trig Input terminal o
30. an open circuit Incorrect impedance matching between the function generator and your load will result in amplitude or offset which does not match the specified signal level Select 1 HIGH Z or 2 50 OHM according to your load configuration INTERFACE selection Select RS232 2 RS232 GPIB 1 GP IB or USB 3 USB The default is RS232 BAUD rate setting Set the baud rate for the RS232 interface Possible baud rates are 9600 4800 2400 1200 600 and 300 The default rate is 9600 1 9600 PARITY setting Set parameters parity bit and number of data bits Possible configurations are None 8 data bits 1 NONE 8 BITS Odd 7 data bits 2 ODD 7 BITS Even 7 data bits 3 EVEN 7 BITS The default setting is None 8 data bits Example for system function setting Configuration Set power on state POWER ON to default and output impedance to 50Q Press Shift system enter systems menu Press menu POWER ON press 11 N set power on state to default 33 4080 series Arbitrary Function Generator with Counter Instruction Manual Press menu select OUT Z press 2 N configure for load impedance of 50Q 4 8 Universal Counter Overview of Counter functions This instrument contains a counter with frequency measurement and totalize functionality which 1s completely independent from the Arbitrary function generator section The range of t
31. apply when TRIG is set to EXTernal Burst spacing time SPACE T Definition Time interval between the 2 consecutive groups of bursts time interval during which there is no burst signal present Parameter does not apply when TRIG is set to EXTernal or SINGle Range 0 1ms 800s Starting phase of the burst PHASE Burst phase 0 0 360 0 in 0 1 increments 29 4080 series Arbitrary Function Generator with Counter Instruction Manual Enabling disabling the burst signal The generator outputs a burst as soon as the burst key is pressed The instrument will automatically output a signal according to the preset parameters If you do not want to output the burst signal simply press the output key to disable the signal output LED above Output button is OFF Once all the parameters are set you can make the burst signal available at the output by pressing the Output button again Note that the output on off function does not apply when single trigger mode is selected Burst example Configuration Burst is sine wave with frequency 20kHz amplitude 2V 10 cycles per group spacing time between each group 10 ms start phase 90 0 Press burst enter into burst mode Press frequency press 2 0 kHz set wave form frequency Press amplitude press 2 V set waveform amplitude Press shift and sine set waveform Press menu select TRIG press 111 IN s
32. ate the progress of the data transfer The window will automatically disappear once the data was downloaded successfully If 53 4080 series Arbitrary Function Generator with Counter Instruction Manual the download was unsuccessful due to communication problems a pop message will appear prompting the user to verify the setup and settings of the communication link bof DDS Series Signal Generator reform Math Waveform View Midas 3 al eforms Number Length Clear Send Data l y Daa 200 dl Exit Start Print Example Draw a waveform with a 1024 point length and transfer the data to memory location ARB1 1 Connect the computer and the instrument using the supplied RS232 cable and configure the RS232 parameters on the instrument and software side Make sure the parameters match 2 Set waveform length as 1024 points 3 Create a waveform 4 Set Waveform Number to 1 5 Click on the Send Data button 6 After the transfer completed successfully press Shift Shift 1 on the instrument to select and enable waveform ARB1 the first Shift key press puts the instrument into Local mode Note If ARB1 was already enabled the output of the generator will be updated immediately with the new waveform data as soon as the download is complete READING DATA FROM A TEKTRONIX DIGITAL STORAGE OSCILLOSCOPE This tool allows the direct transfer of waveform data from a Tektronix digital storage oscilloscope to
33. ction Manual Modulation depth AM LEVEL The range of modulation depth is 1 120 Modulating frequency AM FREQ Frequency of the modulating signal Range is 100uHz 20kHz Parameter does not apply when AM SOURCE is set to EXTernal Modulating signal waveform AM WAVE Waveforms sine square triangle rising and falling ramp can be used as the modulating signal Waveforms are selected by entering the corresponding number numbers 1 5 Parameter does not apply when AM SOURCE is set to EXTernal Modulating signal source AM SOURCE Select internal signal and external input signal The number and prompt symbols are 1 INT 2 EXT The default of the instrument is internal signal The external modulating signal is input through the rear panel Modulation Input terminal with a maximum signal amplitude of 3 Vp p Enabling and disabling the AM signal An AM signal is generated once AM modulation is selected The instrument will automatically output a signal according to the preset parameters If you do not want to output the AM signal simply press the output key to disable the signal output LED above Output button is OFF Once all the parameters are set you can make the AM signal available at the output by pressing the Output button again AM example Configuration carrier signal is square wave frequency 1MHz amplitude 2V internal signal modulating waveform sine wave No 1
34. e meet IEC safety standards DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE Do not operate the instrument in the presence of flammable gases or fumes Operation of any electrical instrument in such an environment constitutes a definite safety hazard KEEP AWAY FROM LIVE CIRCUITS Instrument covers must not be removed by operating personnel Component replacement and internal adjustments must be made by qualified maintenance personnel Disconnect the power cord before removing the instrument covers and replacing components Under certain conditions even with the power cable removed dangerous voltages may exist To avoid injuries always disconnect power and discharge circuits before touching them WARNINGS AND CAUTIONS WARNING and CAUTION statements denote a hazard Follow all instructions contained in these Statements A WARNING statement calls attention to an operating procedure practice or condition which if not followed correctly could result in injury or death to personnel A CAUTION statement calls attention to an operating procedure practice or condition which if not followed correctly could result in damage to or destruction of part or all of the product WARNING Do not alter the ground connection Without the protective ground connection all accessible conductive parts including control knobs can render an electric shock The power jack and mating plug of the power cable meet IEC safety standards WARNING To
35. e without notice Please visit www bkprecision com for the most current product information 10 4080 series Arbitrary Function Generator with Counter Instruction Manual 3 PANEL DESCRIPTION 3 1 Front Panel BK PRECISION 4086AWG 80MHzArbitrary Function Generator with Counter EA FUNCTION MODE de TL a mo SES Arb List Freq Ampl FSK Period Duty PSK cI a ci Offset Gate O POWER c zJ kHz mVrms Hz dBm 3 1 1 Overview of Keys Summary Most keys have multiple functions Primary functions are written on the key Simply press the respective key to enable a primary functions All Function Mode keys and some of the numerical entry keys have associated secondary functions indicated above each key in blue To activate a secondary function press the shift key followed by the desired key The bottom row of the Function Mode keys can be used to enter units directly The unit is indicated below each key To enter a unit enter a numerical value via the numerical keypad then press the corresponding unit key The unit key also serves as Enter function Data entry keys Main Secondary nace Function Function Input Digit 0 Enter SW mode e Enable ARB1 Input Digit 1 waveform a Enable ARB2 Input Digit 2 waveform Ley Main function nte Name Function A Enable ARB7 a Enable ARB8 NS Input Digit 9 Not available a Input decimal point Reset Unit Input negative Enter system menu symbol Move arrow key to left
36. ed from any source of 99V to 242V AC and frequency of 48Hz to 63Hz The maximum power consumption is 35 VA Replace fuses with the same type according to the rating indicated on the rear panel of the instrument The instrument power fuse is located in a fuse compartment below the AC input receptacle To access the fuse first disconnect the power cord and then remove the fuse cartridge Power on procedure Turn on the instrument by pressing the power key on the front panel of the unit The display should be flashing BK PRECISION for 2 seconds followed by the model number e g 4084AWG for 1 second By default the instrument will enter the standard waveform SW mode with the frequency set to 10 00000000 kHz and the waveform annunciator displaying the symbol If the Power ON configuration in the systems menu was modified the parameters of the last operation before power down will be displayed 4 2 Main operating modes SW standard waveform mode In this mode the generator outputs any of the 27 build in waveforms including the 2 main waveforms sine and square This also includes the 8 user programmable arbitrary waveforms models 4084AWG and 4086AWG only For most waveforms you can set frequency amplitude and DC offset In this mode modulation and sweep is not active and all annunciators in status area 4 are turned off When modulation or sweep is enabled press shift SW to return to this mode
37. ed to complete one sweep from start to stop frequency is called sweep time The sweep time range is Ims 800s in linear sweep mode or 100ms 800s in LOG sweep mode Trigger mode TRIG A sweep can be triggered internally or externally The corresponding display values are 1 INT and 2 EXT The default value is INTernal trigger In internal trigger mode the instrument will continuously sweeps from the start frequency to the stop frequency according to the Sweep parameters An external trigger signal can be generated in one of two ways a Press the output key to trigger a single sweep The signal frequency will in decrease from start frequency to stop frequency then sweep will stop b Apply an input trigger signal to the EXT Trig terminal on the rear panel A rising edge will trigger a single sweep In external trigger mode symbols Trig and Ext are displayed in the status field Start and stop of sweep The sweep will start automatically once sweep mode is selected If you don t want to output the sweep signal simply press the output key to disable the signal output LED above Output button is OFF Once all the parameters are set you can make the sweep signal available at the output by pressing the Output button again In external trigger mode the Output key functions only as a single pulse trigger key the Output On Off functionality is now disabled and the output LED will alway
38. emperature 25 C 5C Build in standard and complex arbitrary waveforms 27 build in standard and complex waveforms Sine Square Triangle Positive Ramp Falling Ramp Noise Positive Pulse Negative Pulse Positive DC Negative DC Stair wave Coded Pulse Full wave rectified Half wave rectified Sine transverse cut Sine vertical cut Sine phase modulation Logarithmic Exponential Half round SINX X Square root Tangent Cardiac Earthquake Combination Wavetorm Length 4096 dots Amplitude Resolution 10 bits Pulse Wave Duty Cycle 0 1 99 9 below 10kHz 1 99 10kHz 100kHz Rise Fall Time lt 100ns Duty cycle 20 DC signal characteristics DC range lt 10mV 10V high impedance DC Accuracy lt 5 of setting 10mV high impedance Module for user defined arbitrary waveform generation models 4084AWG and 4086AWG only Number of memory locations for arbitrary waveforms 8 Length of waveforms 8 16000 points Resolution of waveform amplitude 10 bits Frequency range 100uHz 100kHz Sample rate 200MSa s 4080 series Arbitrary Function Generator with Counter Instruction Manual Frequency Characteristics Frequency Range Main waveforms sine square Model 4084 4084AWG 1uHz 20MHz Model 4085 lu Hz 40MHz Model 4086 4086AWG 1uHz 80MHz sine wave lu Hz 40MHz square wave Model 4087 lu Hz 120MHz sine wave lu Hz 40MHz square wave All other waveforms All models lu Hz 100kHz Freq
39. ency Read the frequency of current modulating signal of FM FM SOURce INTernal EXTernal Set modulating source of FM signal as internal INTernal or external EXTernal FM SOURce Read the current modulating source of FM FM STATe ON OFF Turn on FM mode ON turn off FM mode OFF FM STATe Check the on off state of FM mode The returned data are 0 OFF or 1 ON It returns to fixed frequency mode in off state Burst Mode instructions 1 Set the carrier using APPLy instructions or FUNCtion FREQuency VOLTage VOLTAGE OFFSet instruction 2 Set number of burst using BM NCYCles lt cycles gt instruction 3 Set start phase of burst using BM PHASe lt degrees gt instruction 4 Set time interval between two bursts using BM INTernal SPACe lt time gt instruction 5 Set trigger source of burst using BM SOURce INTernal EXTernal SINGle instruction 6 To turn on burst use the BM STATe ON instruction BM NCYCles lt cycles gt Set waveform numbers of burst MAX lt 10000 BM NCYCles Check number of bursts BM PHASe lt degrees gt Set start phase of burst in 0 360 in step of 0 1 BM PHASe Check the start phase of burst BM INTernal SPACe lt time gt Set time interval between two bursts BM INTernal SPACe Check time interval between two bursts BM SOURce INTernal EXTernal SINGle Set trigger source of burst as internal INTernal external EXTernal or sin
40. ent Among the 11 states state O is used to automatically store the power off setting of the instrument States 1 10 are user defined 45 4080 series Arbitrary Function Generator with Counter Instruction Manual RCL 0 1 2 3 4 5 6 7 8 9 103 Recall on of the states 0 10 Special instructions for RS232 SYSTem LOCAL This instruction causes the instrument to enter into local state After receipt of this command all front panel keys are enabled SYSTem REMOTE This instruction causes the instrument enter remote state from local state After receipt of this command all front panel keys are disabled except of the local key shift key which can be used to manually revert to local state NOTE All command strings send to the instrument must terminate with a lt new line gt character Ox0A or n Wiring diagram of RS232 cable required for remote control null modem configuration i 2 3 4 5 6 7 8 9 VO 0 10D UU Ny DB9 connector DB9 connector 46 4080 series Arbitrary Function Generator with Counter Instruction Manual 6 USER PROGRAMMABLE ARBITRARY WAVEFORM MODULE Product Overview In addition to the 27 build in waveforms models 4084AWG and 4086AWG also provide the capability to generate and store up to 8 user defined waveforms in non volatile memory This Windows based software tool offers a graphical user interface that you can use to create edit and transfer custom waveforms to the in
41. enuator disabled 50mVrms f 10Hz 50MHz 100mVrms f 1Hz 100MHz Input attenuator enabled 0 5Vrms f 10Hz 50MHz 1 Vrms f 1Hz 100MHz Max Input Voltage Allowed 100Vp p f lt 100kHz 20Vp p 1Hz 100MHz Input Impedance R gt 500kQ C lt 30pF Coupling AC Waveform sine or square Low Pass Filter cut off frequency about 100kHz with internal attenuation lt 3dB with external attenuation gt 30 dB f gt 1MHz Gate Time Setting 10ms 10s continuously adjustable Display Bits 8 for gate Time gt 5s Totalize Capacity lt 4 29x10 Control Mode manual or external gate control Accuracy time base error trigger error when signal SNR gt 40dB trigger error lt 0 3 Time base Type small TCXO Frequency lOMHz Stability 1 x 10 22 C 5 C 2 3 General Power Supply 198 242V or 99 121V Frequency 47 63Hz Power Consumption lt 35VA Operating Temperature 0 to 40 C Operating Humidity 80 R H Storage Temperature 40 C to 70 C Dimensions WxHxD 255 mmx 100mm x 370 mm 10 0 x 3 93 x 14 56 inch Weight 3 kg 6 6 lbs models 4084 4084AWG 4085 4086 4086AWG 3 5 kg 7 7 lbs model 4087 Remote Interface RS232 Accessories included BNC to alligator cable BNC to BNC cable RS232 communication cable Power line cord Test report Spare fuse Installation disk for Arbitrary Waveform Creation Software models 4084AWG or 4086AWG only NOTE Specifications and information are subject to chang
42. et trigger mode as internal Press menu select COUNT press 1 0 N set number of bursts cycles Press menu select SPACE T press 1 0 ms set space time Press menu select PHASE press 91 0 IN set the start phase of burst 4 6 5 FSK modulation You can configure the function generator to shift its output frequency between two preset values using FSK modulation The rate at which the output shifts between the two frequencies carrier frequency and hop frequency is determined by the internal rate generator or the signal level on the rear panel ext Trig FSK Burst terminal Press FSK PSK to enable FSK modulation A preset frequency and the FSK annunciator is displayed The preset frequency is identical to the START F parameter Any changes automatically update START F and vice versa Frequency amplitude waveform and DC offset of the carrier signal can be set as described in the previous section of this chapter In FSK PSK only sine and square waves can be selected as carrier wave Press the menu key repeatedly to cycle through the FSK menu parameters listed below TART F gt STOP F gt SPACE T gt TRIG START F First frequency or carrier frequency STOP F Second frequency hop frequency SPACE T FSK rate TRIG Trigger source Trigger source TRIG Select internal signal and external input signal 1 INT or 2 EXT The default of
43. gle SINGle BM SOURce Check current trigger source of burst BM STATe ON OFF Turn on burst mode ON or turn off burst mode OFF BM STATe 42 4080 series Arbitrary Function Generator with Counter Instruction Manual Check on off state of burst mode The returned data are 0 OFF or 1 ON The instrument reverts back to fixed frequency mode in off state FSK Mode instructions 1 To set the output waveform amplitude DC offset and frequency 1 using APPLy instructions or FUNCtion FREQuency VOLTage VOLTAGE OFFSet instructions set frequency 2 of FSK using FSKey FREQuency lt frequency gt instruction set time interval of frequency switching using FSKey INTernal SPACe lt time gt instruction set trigger source of FSK using FSKey SOURce INTernal EXTernal instructions turn on FSK using FSKey STATe ON instruction Ma E UN FSKey FREQuency lt frequency gt Set frequency 2 of FSK FSKey FREQuency Check frequency 2 of FSK FSKey INTernal SPACe lt time gt Set time interval of frequency switching FSKey INTernal SPACe Check time interval of frequency switching FSKey SOURce INTernal EXTernal Set trigger source of FSK as internal INTernal or external EXTernal FSKey SOURce Check current trigger source of FSK FSKey STATe ON OFF Turn on FSK mode ON or turn off FSK mode OFF FSKey STATe Check the on off state of FSK mode The returned data are 0
44. he frequency measurement function is 1Hz 100MHz Repeatedly pressing Shift Count will toggle between Frequency measurement and Totalize mode Press Shift and F C TOT once to activate the frequency measurement mode Symbols Ext and Freq will be displayed in the state field and WAITING will flash on the main display The unit is now ready to measure and display the frequency of a signal applied to the input terminal Meas Freq TOT IN in the rear panel When totalize mode is active symbols Ext and Count will be displayed on the status field along with the result for the count on the main display 0 is displayed until a valid signal is detected The unit is now ready to totalize events represented by the signal applied to input terminal Meas Freq TOT IN in the rear panel In event counting mode press the lt key to start and stop the event counter When stopped the current count will be displayed Press gt 1 key to reset the event counter to zero and resume counting Gate time Only applies to frequency measurement mode Press Shift gate to enter a gate time setting Either the numerical keypad or the knob can be used to enter a gate time value If the gate is open the symbol GATE is displayed in the counter state field on the right The range of gate times is 10ms 10s Low pass filter By pressing Shift LPF the input signal will be passed through a low
45. manual VOLTage Check the output amplitude of current main function output VOLTage OFFSet lt offset gt Set the DC offset For the relationship between the DC offset and output amplitude refer to section 4 5 3 VOLTage OFFSet Check the DC offset of main function output OUTPut LOAD 50 INFinity Configure the amplitude display value for 50Q or high impedance INFinity load termination The output amplitude should be consistent with the technical specifications OUTPut LOAD Read the current load impedance setting of the function generator INPUT FILTER ON OFF Enable disable the low pass filter for the counter INPUT FILTER Read the current on off state of the low pass filter INPUT ATTenuator ONJOFF Enable disable Set the input attenuator of the counter INPUT ATTenuator Read the state of the input attenuator on off SAV 0 1 2 3 4 5 6 7 8 9 10 Save as many as 11 input states of the instrument Among the 11 states state 0 is used to automatically store the power off setting of the instrument States 1 10 are user defined RCL 0 1 2 3 4 5 6 7 8 9 103 Recall one of the states 0 10 AM instructions 1 To set the carrier of output using APPLy instructions or FUNCtion FREQuency VOLTage VOLTAGE OFFSet instructions 2 To set modulating waveform of AM using AM INTernal FUNCtion SINusoid SQUare TRIangle instructions To set modulating frequency of AM using AM INTernal FREQuency lt fre
46. n the rear panel In external trigger mode the trigger signal applied to the trigger input terminal on the rear panel determines the PSK rate Logical high of the trigger signal is associated with phase value 2 while the Low level of the trigger signal is associated with phase value 1 Phase 1 P1 The first start phase value of the PSK output signal Input range of phase 1 and phase 2 1s 0 0 360 0 Phase 2 P2 The second start phase value of the PSK output signal Input range of phase 1 and phase 2 is 0 0 360 0 Spacing time SPACE T PSK rate Range is 0 1ms 800s PSK example Configuration Sine signals with 600 kHz output frequency 2V amplitude phase alternating between 90 0 and 180 0 PSK rate is 10ms Press FSK PSK 2 times if necessary to enter PSK mode Press Freq Period1 enter 61 0 0 kHz set waveform frequency Press Ampl Duty1 enter 2 V set waveform amplitude Press shift sine set waveform Press menu select TRIG enter 1 N set trigger mode as internal Press menu select P1 enter 9 0 N set phase 1 Press menu key select P2 enter 1 8 0 IN set phase 2 Press menu select SPACE T enter 1 0 ms set PSK rate 4 7 Set System Parameters Press Shift and system to enter the Systems menu SYSTEM will flash on the display Repeatedly press menu to cycle through the system parameter
47. ngth is taken as the length of the new waveform Subtract Subtract waveform data stored in a text file from the current waveform displayed on the screen The resulting new waveform is automatically normalized by dividing the new waveform by 2 To look at it differently each amplitude value is weighted by a factor 0 5 before the subtract operation is performed If the lengths of the two waveforms differ the longer length is taken as the length of the new waveform Symmetry of waveform X axis Flip the current image around the X axis to create a mirror image of the previous waveform Symmetry of waveform Y axis Flip the current image around the vertical center line which divides the editing screen in half Amplitude Divide Divide the amplitude of the current waveform by an integer value The value can be positive or negative but not zero Amplitude multiply Multiply the amplitude of the current waveform by an integer value The value can be positive or negative but not zero Frequency multiply Multiply the timebase value of the current waveform by an integer value The value must be positive but not zero An integer value of 2 will double the frequency Formula of sine add Add 2 sine waves according to the predefined formula 1 sin x a sin b x Choose parameters a and b The first sine wave in the equation cannot be edited a2 4080 series Arbitrary Function Generator with Counter Instruction Manual
48. ode instructions 1 To set the output waveform amplitude DC offset and frequency using APPLy instructions or FUNCtion FREQuency VOLTage VOLTAGE OFEFSet instructions To set start frequency of sweep using FREQuency STARt lt frequency gt instruction To set stop frequency of sweep using P FREQuency STOP lt frequency gt instruction To set sweep mode using SWEep SPACing LINear LOGarithmic instruction To set sweep time using SWEep TIME lt time gt instructions To set trigger source of sweep using SWEep SOURce INTernal EXTernal instructions To turn on sweep using SWEep STATe ON instruction ee ee E ai FREQuency STARt lt frequency gt Set start frequency of sweep FREQuency STARt Check startting frequency of sweep FREQuency STOP lt frequency gt Set stop frequency of sweep FREQuency STOP Check stop frequency of sweep SWEep SPACing LINear LOGarithmic Set sweep mode as linear LINear or logarithmic LOGarithmic SWEep SPACing Check sweep mode SWEep TIME lt time gt Set sweep time SWEep TIME Check the sweep time SWEep SOURce INTernal EXTernal Set trigger source of sweep as internal INTernal or external EXTernal SWEep SOURce 44 4080 series Arbitrary Function Generator with Counter Instruction Manual Check current trigger source SWEep STATe ONJOFF Turn on sweep mode ON or turn off sweep mode OFF SWEep STATe Check the on off state of sweep mode The
49. om a PC via the standard RS232 interface Make sure to configure the RS232 interface to match the settings on your PC by setting the parameters in the Systems menu accordingly The instrument enters the remote state after any remote command is received at which time all keys except of the Local key Shift are locked When in Remote mode the instrument can be returned to Local mode by pressing the Local key or by sending a LOCAL instruction via the RS232 interface 5 2 Overview and syntax of SCPI instructions This section summarizes the SCPI commands available to program the function generator over the remote interface Refer to the later sections in this chapter for more details on each command Throughout this manual the following conventions are used for SCPI command syntax e Square brackets indicate optional keywords or parameters e Braces enclose parameters within a command string e Triangle brackets lt gt indicate that you must substitute a value for the enclosed parameter e A vertical bar separates multiple parameter choices Command Summary APPLY instruction 35 4080 series Arbitrary Function Generator with Counter Instruction Manual APPLy SINusoid lt frequency gt lt amplitude gt lt offset gt APPLy SQUare lt frequency gt lt amplitude gt lt offset gt APPLy TRlangle lt frequency gt lt amplitude gt lt offset gt APPLy UP_RAMP lt frequency gt lt amplitude gt l
50. orresponding relationship between the Vp p value of the amplitude and the absolute DC offset value at high impedance Vp p value of AC signal Absolute value of DC offset 1 001 V 20 00 V 0 10 000 Vpp 2 V 316 1 mV 1 000 V 0 2 000 V 100 1 mV 316 0 mV 0 632 9 mV 31 01 mV 100 0 mV 0 200 9 mV 2 000 mV 31 00 mV 0 62 99 mV 4 5 4 Adjustment of duty cycle If the current waveform is pulse and the current display value is amplitude use the Ampl Duty 1 button to toggle between Amplitude and Duty cycle display When the pulse width is displayed enter a value via the numeric keypad or the knob The valid range is 0 1 99 9 for frequencies below 10kHz with a maximum resolution of 0 1 For frequencies between 10kHz 100kHz the range 1s 1 99 and the maximum resolution is 1 Example Enter a duty cycle value of 60 5 Press Pulse 61 01 e 5 N or use the knob and arrow keys 22 4080 series Arbitrary Function Generator with Counter Instruction Manual 4 5 5 Syne TTL Signal A TTL signal output is provided on the front panel SYNC terminal All signals including modulated signals and arbitrary waveforms except DC and noise have an associated TTL signal This signal is a TTL high when the waveform s output on the main terminal is positive relative to zero volts The signal is a TTL low when the output 1s negative The TTL signal is generated by passing the main output signal through
51. owed by the currently active value of that parameter Use the knob or numerical keys to enter a new value Once the parameter is set press menu to advance to the next parameter Continue pressing the menu key to cycle through all parameters Press Shift SW to return to the main waveform mode and to set the carrier waveform parameters Sweep Mode MODE gt START F gt STOP F gt TIME 14 4080 series Arbitrary Function Generator with Counter Instruction Manual MODE Select LINEAR or LOGarithmic sweep START F Sweep start frequency STOP F Sweep stop frequency TIME Sweep time TRIG Select trigger source INTernal or EXTernal FM modulation FM DEVIA gt FM FREQ gt FM WAVE gt FM SOURCE FM DEVIA Peak frequency deviation FM FREQ Modulating signal frequency FM WAVE Modulating signal waveform sine square triangle rising or falling ramp FM SOURCE Toggle between internal and external modulating signal AM modulation AM LEVEL gt AM FREQ gt AM WAVE gt AM SOURCE AM LEVEL Modulation depth AM FREQ Frequency of modulating signal AM WAVE Modulating signal waveform sine square triangle rising or falling ramp AM SOURCE Select internal or external modulating signal Burst modulation TRIG gt COUNT gt SPACE T gt PHASE TRIG Select trigger source internal or external COUNT Number of burst cycles SPACE T Burst time spacing PHASE starting
52. performance problem and return any leads probes connectors and accessories that you are using with the device Non Warranty Service Return the product in the original packaging to the address below Clearly state in writing the performance problem and return any leads probes connectors and accessories that you are using with the device Customers not on open account must include payment in the form of a money order or credit card For the most current repair charges please visit www bkprecision com and click on service repair Return all merchandise to B amp K Precision Corp with pre paid shipping The flat rate repair charge for Non Warranty Service does not include return shipping Return shipping to locations in North American is included for Warranty Service For overnight shipments and non North American shipping fees please contact B amp K Precision Corp B amp K Precision Corp 22820 Savi Ranch Parkway Yorba Linda CA 92887 www bkprecision com 714 921 9095 Include with the returned instrument your complete return shipping address contact name phone number and description of problem Limited One Year Warranty B amp K Precision Corp warrants to the original purchaser that its products and the component parts thereof will be free from defects in workmanship and materials for a period of one year from date of purchase B amp K Precision Corp will without charge repair or replace at its option defective product or componen
53. quency gt instructions To set the modulation depth of AM using AM DEPTh depth in percent instructions To set modulating source of AM using AM SOURce INTernal EXTernal instructions To start AM using AM STATE ON instructions Nn Bu AM DEPTh depth in percent Set modulation depth of AM MIN 1 MAX 120 AM DEPTh 40 4080 series Arbitrary Function Generator with Counter Instruction Manual Read the current modulation depth of AM AM INTernal FUNCtion SINusoid SQUare TRIangle Set the modulating waveform for AM using modulating waveforms SIN SQU TRI UP RAMP and DOWN_RAMP AM INTernal FUNCtion Check current modulating waveform of AM Return parameters are SIN SQU TRI UP RAMP DOWN RAMP AM INTernal FREQuency lt frequency gt Set frequency of modulating signal of AM When internal modulating source is selected the modulating frequency should be 10kHz AM INTernal FREQuency Read the frequency of the current modulating signal for AM AM SOURce INTernal EXTernal Set modulating source of modulating signal of AM as internal INTernal or external EXTernal AM SOURce Read the current modulating source of AM AM STATe ON OFF Turn AM mode on off AM STATe Check the on off state of AM mode The returned data are 0 OFF or 1 ON In off state the instrument reverts back to fixed frequency mode FM instructions 1 To set the carrier
54. r with Counter Instruction Manual Control Mode internal or external trigger external TTL level low level P1 high level P2 Burst Characteristics Waveform sine or square Frequency Range same as main waveforms Burst Counts 1 10000 cycles Time interval between bursts 0 1ms 800s Control Mode internal single or external gated trigger Frequency Sweep Characteristics Waveform sine or square Start Stop Freq same as main waveforms Sweep Time Ims 800s linear 100ms 800s log Sweep Mode Linear or Logarithmic External trigger signal frequency DC 1kHz linear DC 10Hz log Control Mode internal or external trigger Rear Panel Terminals for modulation and sweep Output MOD OUT Frequency 100uHz 20kHz Waveform sine square triangle rising falling ramp Amplitude SVp p 5 Output Impedance 6000 Modulation IN 3 Vpp 100 Modulation External Input Trig FSK Burst Level TTL Main OUTput Impedance 500 Protection Short circuit and overload protected State Storage Characteristics Storage Parameters frequency amplitude waveform DC offset values modulation parameters Storage Capacity 10 user configurable stored states Storage Time more than 10 years 2 2 Universal Counter Frequency Range Frequency Measurement 1Hz 100MHz Totalize mode SOMHz max 4080 series Arbitrary Function Generator with Counter Instruction Manual Input Characteristics Sensitivity Input att
55. rbitrary Waveform Module of DDS Series Signal Generator e scilloscop Esz32 set Peteco Math Waveform View Other BO o lemel A Waveforms F Current Position Sine 1 Xx 92 Y 0 987 Cosine 00 Triangle Positive Ramp Negative Ramp 00 Modifying existing waveforms with mathematical Functions Waveforms can be modified by applying one of the following mathematical functions Addition subtraction of waveforms symmetry of Y axis and X axis division and multiplication by a constant Waveform Module of DDS Series Signal Generator op R5232 Set Standard Waveform Mieti Moa View Other H e 900 P Add Waveforms Number Length of Waveform E 201 Points Subtract symmetry of Waveform X axis pai Symmetry of Waveform Y axis a Amplitude Multiply fff Amplitude Normalize ae ADA YO fT Xj xf O Formula of Sine Add OI AOS O O A E SN II Set Point Set I op Frequency Multiply ce 5 20 9 40 8 60 7 80 6 100 5 120 4 140 3 160 2 180 1 200 Add Add waveform data stored in a text file to the current waveform displayed on the screen The 51 4080 series Arbitrary Function Generator with Counter Instruction Manual resulting new waveform is automatically normalized by dividing the new waveform by 2 To look at it differently each amplitude value 1s weighted by a factor 0 5 before the add operation is performed If the lengths of the two waveforms differ the longer le
56. returned data are 0 OFF or 1 ON It returns to fixed frequency mode in off state Counting instructions FUNCtion TOTal INITial Initialize the counter FUNCtion TOTal STARt Set the counter to start counting FUNCtion TOTal STOP Set the counter to stop counting FUNCtion TOTal CLEAr Clear the counted value of the counter FUNCtion TOTal Record the current value of the counter Frequency Measurement instructions FUNCtion FREQuency MEASure Enable frequency measurement function for the instrument to start a new frequency measurement FUNCtion FREQuency Record last frequency value after frequency measurement is finished FUNCtion FREQuency GATE lt time gt Set gate time in the range of 10ms to 10s for frequency measurement FUNCtion FREQuency GATE Check current gate time for frequency meadurement Trigger instructions TRIGger SOURce IMMediate EXTernal BUS Set trigger source or modulating source for available functions as internal IMMediate external EXTernal or single BUS TRIGger SOURce Check trigger source or modulating source of current function as internal IMM external EXT or single BUS System related instructions IDN This query will return the instrument s manufacturer model number and firmware version Example B K Precision 4084AWG V1 00 RST Reset instrument to the default state SAV 0 1 2 3 4 5 6 7 8 9 10 Save as many as 11 input states of the instrum
57. rms The instrument supports AM FM FSK PSK and pulse modulation and linear and logarithmic sweep Modulation parameters can be set precisely and are adjustable over a wide range The 4080 Series supports internal and external modulation sources as well as internal external and gated trigger sources All models are capable of generating complex predefined arbitrary waveforms Additionally models 4084AWG and 4086AWG provide the flexibility to create custom waveforms The AWG module includes an intuitive graphical Windows based software tool for creating and editing custom arbitrary waveforms and transferring the waveforms to the instrument s non volatile memory The software also provides a direct interface to Tektronix TDS1000 TDS2000 TPS2000 and TDS3000 series digital storage oscilloscopes offering users a convenient means to recreate waveforms originating from the DSO s display or internal memory The 4080 Series front panel operation is straightforward Parameters can be entered using the knob or directly via the numerical keypad and unit keys The instruments are fully programmable via the standard RS232 interface The command set is SCPI standard Commands for Programmable Instruments compatible The combination of classical function and arbitrary waveform generator makes this series a versatile solution for many applications in Electronic Test and Design Sensor Simulation Education and Training 1 2 Features e
58. row keys 21 4080 series Arbitrary Function Generator with Counter Instruction Manual 99 66 99 66 99 66 In case of standard waveforms sine square triangle rising ramp and pulse numbers can be entered and displayed as Peak to peak value Vpp or mVpp root mean square value Vrms and mVrms or dBm value All other waveforms can only be edited or displayed using Vpp or mVpp units only 4 5 3 Set DC Offset Voltage Press shift offset to display the current DC offset value If the current DC offset value is not equal to zero the annunciator Offset will turn on The DC offset value can be entered directly or using the knob Example Set an offset value 1 6V peak to peak Press shift Coffset 1 1 Le 61 Vpp1 or shift offset 1 Le 61 1 1 Vpp 1 or use the knob for value entry Zero Point Adjustment For zero point adjustment of the output signal using the knob 1s more convenient than direct entry via the numerical keypad The transition of the DC offset Voltage from plus to minus sign will be automatic when passing through the zero point The input range of the signal amplitude and DC offset should satisfy the following equation Voffset Vpp 2 S Vmax with the parameters defined as followed Vpp 1s the peak to peak value of the amplitude Voffset is the absolute value of the DC offset Vmax is 10V at high impedance and 5V at 50 2 load The following table shows the c
59. s SIN 5 000000000000E 03 3 000000E 00 2 500000E 00 OUTPUT instructions FUNCtion SHAPe SINusoid SQUare TRlangle UP_ RAMPIDOWN_RAMPINOISE l Select output waveform 27 waveforms are available In fixed frequency mode each of the 27 kinds can be selected In other modes only sine and square waves can be selected FUNCtion SHAPe Check the waveform of current function output The returned data are SIN SQU TRI UP_ RAMP etc FREQuency lt frequency gt Set the frequency of function output FREQuency Check the frequency of current main function output The returned data unit is Hz PULSe DCYCle lt percent gt Set the duty cycle of pulse output Duty cycle 0 1 99 9 in step of 0 1 f lt 10 KHz 1 99 in step of 1 10 kHz lt f lt 100 kHz default value 20 PULSe DCY Cle Check the duty cycle of current pulse output The returned value is percentage VOLTage lt amplitude gt 39 4080 series Arbitrary Function Generator with Counter Instruction Manual Set the amplitude of the currently active waveform The amplitude setting should be consistent with the technical specifications The output amplitude ranges of P PULSE N PULSE P_DC and N_DC should be 2mVpp lt ampl lt 10Vpp in high impedance output setting and 1mVpp lt ampl lt SVpp in 500 setting The above value is given based on a DC offset of OV Ifa DC offset is used refer to the setting of DC offset described in Chapter 4 in this
60. s be lit Sweep configuration example Sweep parameters are as followed Frequency range 100Hz 200kHz sweep time 10s linear sweep internal trigger mode Set the carrier frequency parameters Press sweep Press menu Select MODE wait then enter 1 N linear sweep Press menu to select START F press 1 0 0 Hz Press menu to select STOP F press 2 0 0 kHz Press menu to select TIME press 1 0 s Press menu to select TRIG press 1 N Hint The frequency displayed immediately after pressing Sweep is the start frequency Any changes to that value will automatically update parameter START F 25 4080 series Arbitrary Function Generator with Counter Instruction Manual 4 6 2 FM modulation A modulated waveform consists of a carrier waveform and a modulating waveform In FM the frequency of the carrier is varied by the amplitude of the modulating waveform The function generator will accept an internal or external FM modulating signal Press the FM key to enter into FM mode The display will indicate the carrier frequency and the FM annunciator will be lit The frequency amplitude waveform and DC offset of the carrier signal can be set as described in the previous section Only the main functions sine or square wave can be selected as a carrier signal Press the menu key repeatedly to cycle through the FM modulation parameters listed below FM DEVIA
61. s indicated below POWER ON Power on state 32 4080 series Arbitrary Function Generator with Counter Instruction Manual ADDRESS set GPIB address option OUT Z Configure amplitude display for 50Q or high impedance load termination INTERFACE Select RS232 or GP IB IEEE 488 interface option BAUD Baud rate for the RS232 interface PARITY Parity and Data Bits configuration for RS232 After the selected system parameter flashes for 1 second the parameter value will be displayed and the value can be edited using the knob or via direct entry using the numerical keypad Power on state POWER ON This parameter has 2 possible values 1 DEFAULT or 2 LAST STATE In determines the initial setting of the instrument after power up The factory setting is 1 DEFAULT The default state is main waveform sine wave 10kHz 2Vpp which is identical to the state the instrument 1s in after pressing Reset When selecting 2 LAST STATE the instrument will remember the last state the unit was in before power was turned off The power on state is stored in non volatile memory location 0 see Store Recall section GPIB address ADDRESS The default of GP IB interface address is 1 It can be set within 0 30 Output impedance OUT Z The generator has a fixed output impedance of 50 ohms on the OUTPUT terminal You can specify whether you are terminating the output into a 50 ohm load or
62. secondary functions to enter the systems menu reset the unit to 1ts default values or revert to Standard Waveform SW mode lt gt arrow keys The primary function is to move the flashing digit left or right or to select the desired arbitrary waveform from the Arb List secondary function When in Counter Mode these 2 keys are used to start stop or reset resume the counter Freq Period key Toggle between frequency and period display primary function or to enable sine waveform AmplPulse Width key Display and adjust the amplitude of waveforms or when in pulse mode toggle the display 13 4080 series Arbitrary Function Generator with Counter Instruction Manual between amplitude and pulse width The secondary function activates the square waveform FSK PSK key Toggle between FSK and PSK modulation primary function Activate triangle waveform Menu key Enter modulation parameters for FSK PSK FM AM and burst modulation and for sweep mode When in standard waveform mode no modulation main waveforms enabled this key can also be used to toggle the units for the amplitude display value between Vpp Vrms and dBm Press the Amplitude key first then the Menu key to toggle between the units The secondary function enables the ramp waveform FM key Activate FM modulation primary function Enter Storage mode secondary function Enter units ms or mVpp after entering the desired value by n
63. series Arbitrary Function Generator with Counter Instruction Manual 4 6 Set Modulation and Sweep Parameters 4 6 1 Sweep mode In the frequency sweep mode the function generator steps from the start frequency to the stop frequency at a sweep rate which you specify You can sweep up or down in frequency and with either linear or logarithmic spacing You can also configure the function generator to output a single sweep one pass from start frequency to stop frequency by applying an external trigger The function generator can produce a frequency sweep for sine or square waveforms Press Sweep to enable the frequency sweep mode The display shows a preset frequency start frequency and the Sweep symbol appears in the state display area The carrier frequency will be displayed and the frequency amplitude waveform and DC offset of the carrier signal can be set as described in previous sections of this chapter The main functions sine or square wave can be selected as a carrier signal Press the menu key repeatedly to cycle through the sweep menu parameters listed below MODE Select LINEAR or LOGarithmic sweep mode START F sweep start frequency STOP F sweep stop frequency TIME sweep time TRIG Select trigger source INTernal or EXTernal Each time you press the menu key the parameter will flash for 1 second followed by the value of that parameter Sweep mode parameters can be entered via numerical keypad or the
64. t offset gt APPLy DOWN_ RAMP lt frequency gt lt amplitude gt lt offset gt APPLy NOISe lt frequency gt lt amplitude gt lt offset gt APPLy P_DC lt frequency gt lt amplitude gt lt offset gt APPLy if waveform is Noise or DC the frequency data contained in the command is not invalid OUTPUT instructions SOURce FUNCtion SHAPe SINusoid SQUare TRIangle UP_ RAMPIDOWN_RAMP NOISe PULSe P_ PULSE N PULSE P DC N DC STAIR C PULSECOMMUT FU COMMUT HA SINE_ TRA SINE VER SINE PM LOG EXP ROUND_ HAL SINX X SQU_ ROOT TANGent CARDIO QUAKE COMBIN FUNCtion SHA Pe SOURce FREQuency lt frequency gt FREQuency SOURce PULSe DCY Cle lt percent gt PULSe DCY Cle SOURce VOLTage lt amplitude gt VOLTage VOLTage OFFSet lt offset gt VOLTage OFFSet SOURce OUTPut LOAD 50 INFinity OUTPut LOAD INPUT FILTER lt onjoff gt INPUT FILTER INPUT ATTenuator lt on off gt INPUT ATTenuator SAV 0 1 2 3 4 516 7 8 9 10 State 0 is the working state of the instrument before power off RCL 0 1 2 3 4 516 718 9 10 States 1 10 are user defined working states MODULATION instructions SOURce AM DEPTh lt depth in percent gt AM DEPTh AM INTernal FUNCtion SINusoid SQUare TRIangle UP_RAMP DOWN_ RAMP AM INTernal FUNCtion 36 4080 series Arbitrary Function Generator with Counter Instruction Manual AM INTernal FREQuency lt frequency gt AM INTernal FREQuency AM
65. t parts Returned product must be accompanied by proof of the purchase date in the form of a sales receipt To obtain warranty coverage in the U S A this product must be registered by completing a warranty registration form on www bkprecision com within fifteen 15 days of purchase Exclusions This warranty does not apply in the event of misuse or abuse of the product or as a result of unauthorized alterations or repairs The warranty is void if the serial number is altered defaced or removed B amp K Precision Corp shall not be liable for any consequential damages including without limitation damages resulting from loss ofuse Some states do not allow limitations of incidental or consequential damages So the above limitation or exclusion may not apply to you This warranty gives you specific rights and you may have other rights which vary from state to state B amp K Precision Corp 22820 Savi Ranch Parkway Yorba Linda CA 92887 www bkprecision com 714 921 9095 58 4080 series Arbitrary Function Generator with Counter Instruction Manual Intentionally left blank 59 4080 series Arbitrary Function Generator with Counter Instruction Manual BK PRECISION 22820 Savi Ranch Parkway Yorba Linda CA 92887 www bkprecision com 2007 B amp K Precision Corp Printed in China Edition 1 0 60
66. t the key entry 1s invalid The instrument will simply ignore the key pressed Example Key is pressed when trying to enter a frequency value The instrument will ignore the entry and respond with a beep sound 4 5 Output Configuration 4 5 1 Set Frequency and Period The frequency period key is used to toggle between Frequency and Period display of the standard waveform or the carrier waveform Frequency Press the frequency key to display the current frequency value The value can be modified using the numerical keypad or the knob Example To set a frequency value of 5 8 kHz enter the following key sequence frequency 5 e kHz or frequency 5 8 01 0 Hz or use the knob and lt gt keys The display will be 5 80000000 kHz Period Setting The signal frequency can also be displayed or entered as a period value If the current display is frequency press the frequency period key to display the current period value Values can be entered with the numerical key pad or using the knob Example To set a period value of 10ms enter the following sequence of keys Period 1 0 ms Or use the knob and 41 gt keys 4 5 2 Set Amplitude Press the Amplitude key to display the current amplitude value Modify the value using the knob or the numerical keypad Example Set amplitude to 4 6V peak to peak Press Amplitude 41 e 6 Vpp or modify values using the knob and ar
67. ternal memory of the 4084AWG or 4086AWG Function Arbitrary Generator Waveforms can be created in several ways Users can draw new waveforms with a mouse edit one of the predefined waveforms read in waveform parameters from a text file or download waveforms from a TEKTRONIX digital storage oscilloscope Once completed the waveform can be transmitted to the generator and stored in non volatile memory Software Installation This section describes how to install the Arbitrary Waveform Creation Software using the Install Shield Wizard 1 Insert the Installation CD into the CD ROM drive 2 Locate setup exe on the CD ROM and double click it 3 Follow the instructions given by the Install Shield wizard Launching the Software To start the Software you can do one of the following a Run the application from the Windows Start menu Select Start gt Programs gt BK Precision gt 4080 Series Arbitrary Waveform SoftwarelArb Process exe b Go to the folder where you have installed the Arbitrary Waveform Creation Software and double click on Arb_process exe To exit the application select File gt Exit from the pull down menu Arbitrary Waveform Module of DDS Series Signal Generator File Oscilloscop RS232 Set Standard Waveform Math Waveform View Other a AO oO 11 P OO pane E Waveforms ei Length of Waveform X 97Y 0 673 1 S 201 Points Start Point Stop Point X 0 X 0 W 0 000 Y 0 000 Set Point Set Line
68. the instrument is 30 4080 series Arbitrary Function Generator with Counter Instruction Manual internal In internal mode the rate at which the signal shifts between the carrier and hop frequency is determined by the FSK rate In external trigger mode the trigger signal applied to the trigger input terminal on the rear panel determines the FSK rate Logical high of the trigger signal is associated with frequency 2 while the Low level of the trigger signal 1s associated with frequency 1 Frequency 1 START F The first frequency or carrier frequency Frequency 2 STOP F Second frequency or hop frequency Frequency input range of frequency 1 and frequency 2 is 1 u Hz Fmax Spacing time SPACE T This parameter sets the FSK rate with a range of 1ms 800s FSK example Configuration Sine signal of 2V output amplitude carrier frequency 20kHz and hopping frequency 600 kHz FSK rate 10ms Press FSK PSK enter into FSK function mode Press AmplDuty1 press 2 V set waveform amplitude Press shift and sine set waveform Press menu select TRIG enter 11 IN set trigger mode as internal Press menu select START F enter 2 0 kHz set carrier frequency F1 Press menu select STOP F enter 61 0 01 kHz set hop frequency F2 Press menu select spacing time SPACE T press 11 0 ms set spacing time 4 6 6 PSK modulation You c
69. ting signal Waveforms are selected by entering the corresponding number numbers 5 This parameter applies only when FM SOURCE is set to INTernal Modulating signal source FM SOURCE The modulating signal could be an internal signal and external input signal The corresponding prompts are 1 INT and 2 EXT the default is INTernal signal The external modulating signal is applied to terminal Mod In on the rear panel max signal amplitude is 3Vp p When 26 4080 series Arbitrary Function Generator with Counter Instruction Manual modulating signal source external is selected the symbol Ext is displayed and parameters FM DEVIA FM FREQ and FM WAVE do not apply disabled Start and stop of FM modulation An FM signal is generated once FM function mode is selected The instrument will automatically output a signal according to the preset parameters If you do not want to output the FM signal simply press the output key to disable the signal output LED above Output button is OFF Once all the parameters are set you can turn make the FM signal available at the output by pressing the Output button again FM example Example configuration Carrier signal is square frequency is 1MHz amplitude is 2V modulating signal is generated internally Carrier waveform is sine No 1 Frequency is 5kHz Peak frequency deviation is 200kHz Press FM Press frequency 1 then 1 MHz set
70. to this Input terminal Meas Freq TOT In Input terminal for Universal Counter which operates in frequency measurement or Totalize mode MOD OUT The internally generated modulating signal when in AM mode will be available at this output RS232C RS232 interface for remote control of instrument all models or for download of custom arbitrary waveforms models 4084AWG and 4086AWG only AC Socket and fuse compartment Connect the supplied power line cord to this receptacle Make sure to install the appropriate fuse according to the selected AC voltage AC Input Selector switch Set this switch to the corresponding AC voltage in your area 17 4080 series Arbitrary Function Generator with Counter Instruction Manual 4 OPERATING INSTRUCTIONS 4 1 Installation This section contains installation information power requirements and initial inspection and signal connections for the 4080 series generators Mechanical Inspection This instrument was carefully inspected before shipment Upon receipt inspect the instrument for damage that might have occurred in transit If any sign of damage is found notify your B K Precision distributor Instrument Mounting The 4080 Series 1s intended for bench use The instrument includes a handle adjustable for optimum panel viewing angle The instrument does not require special cooling when operated within conventional temperature limits Power Requirements The 4080 Series can be operat
71. ual Working with graphical tools Waveform Parameters The waveform parameters are represented in the following format Values of the vertical axis Y are normalized to 1 000 1 000 Values of the horizontal axis X axis are 0 length of waveform minus 1 Setting the number of points The waveform length can be set as required Input the required number of points in the waveform setup area then press ENTER The X axis will be updated accordingly The minimum number of points is 8 the maximum number is 16000 gt sSerles Signal Generator ME lt Math Waveform wiew Other T Waveforms Humber Length of Waveform Current Position X 134 Y 0 987 poe Start Point Stop Point A o x T Y 0 000 wY 0 000 Set FP omt Set Line F Send Clear Data Exit Drawing waveforms Click on the left mouse key then grab and move the default center line to the desired location The coordinates of the cursor position will be displayed while drawing Release the left mouse key to stop drawing 49 4080 series Arbitrary Function Generator with Counter Instruction Manual Arbitrary Waveform Module of DDS Series Signal Generator File Oscilloscop RS232 Set Standard Waveform Math Waveform View Other wr AO S Pl 2 D0D area Desea Waveforms Number Length of Waveform 5 X 1111008 0 361 201 Points Start Point Stop Point 0 gt de 0 Ye 0 000 Y 0 000 Set Point Set Line Send Clear Dat
72. uency Stability 1x10 22C 5C Resolution lu Hz Frequency Accuracy lt 5x10 22 C 5 C Data entry Units s ms Hz kHz MHz Amplitude Characteristics Amplitude Range 4084 4084AWG 2mV 20Vpp open circuit ImV 10Vpp 500 4085 4086 4086AWG for Freq lt 40MHz 2mV 20Vpp open circuit 1ImV 10Vpp 500 for Freq gt 40MHz 2mV 4Vp p open circuit 1mV 2Vpp 509 4087 for Freq lt 40MHz 2mV 20Vpp open circuit ImV 10Vpp 500 for Freq gt 40MHz 76dBm 13 5 dBm 500 or 0 lmV 3Vpp 500 Max Resolution 2uVpp open circuit 1 uVpp 509 Amplitude Accuracy 1 0 2mV sine wave relative to 1kHz Amplitude Stability 0 5 3 hours Flatness For amplitude lt 2Vpp 3 frequency lt 5MHz 10 SMHz lt frequency lt 40MHz For amplitude gt 2Vpp 5 frequency lt SMHz 10 SMHz lt frequency lt 20MHz 20 frequency gt 20MHz Models 4086 AWG 4087 only 1dBm frequency gt 40MHz Output Impedance 500 Output Units Vpp mVpp Vrms mVrms dBm 4080 series Arbitrary Function Generator with Counter Instruction Manual DC Offset Characteristics Offset Range open circuit Freq lt 40MHz 10Vpk ac de Offset lt 2xpeak to peak amplitude Freq gt 40MHz 2Vpk ac dc Offset lt 2xpeak to peak amplitude Resolution 2uV open circuit LuV 500 Offset Error 5 of setting 10mV Ampl lt 2Vpp into open circuit 5 of setting 20mV Ampl gt 2Vpp into open circuit
73. umerical key pad In Counter Mode this key turns the input attenuator on or off AM key Activate AM modulation primary function The secondary function 1s used to recall and recreate signals stored in status memory Enter units MHz and Vrms after entering the desired value by numerical key pad Enable the low pass filter when in Counter mode Sweep key Activate sweep mode Select frequency measuring and totalize mode secondary function Enter units kHz or mVrms after entering the desired numerical value directly via the keypad Use the Shift key to toggle between frequency measurements and totalize mode Burst key Activate burst mode primary function Enter DC offset mode secondary function Enter units Hz or dBm When in frequency measurement mode press this key to enter the gate time Output key Press this key to toggle the main OUTPUT signal between the ON and OFF state By default the output is turned on indicated by the green LED and the currently active wave form is available at the OUTPUT terminal In Burst or Sweep mode this key is also used to generate a single trigger 3 14 Description of menu parameters Use this key to configure modulation parameters sweep mode parameters and system parameters Modulation and Sweep mode After enabling modulation or sweep mode press menu to configure the related parameters Each time you press the menu key the parameter will flash for 1 second foll
74. uty cycle enable pulse mode by pressing shift 4 Note that the duty cycle can only be adjusted in pulse mode 4 3 Waveform Selection Enabling common waveforms Press shift followed by the waveform key to select one of the 5 common waveforms sine square triangle ramp and pulse The corresponding waveform annunciator will be displayed in the waveform display area Note that the instrument operates in Function Generator mode when selecting sine and square and in ARB mode for the remaining functions Arb annunciator is lit Note The 5 common waveforms can also be output by selecting the corresponding number from the ArbList in this section Example Press Shift FSK PSK to enable the triangle waveform Enabling stored waveforms from the Arb List Make sure you are in SW mode All area 4 status annunciators are off If modulation or sweep is active press shift SW to return to the standard waveform mode Press shift gt to enter the ArbList Waveform 6 NOISE is enabled and appears on the display Use the knob or the numeric keypad to select one of the 27 stored waveforms from the ArbList according to the table in this section Example To select negative ramp DOWN_RAMP do the following Press shift gt enter ArbList Press 5 N enable DOWN RAMP or select waveform with the knob Models 4084AWG and 4086AWG only Locations 28 35 are reserved for the storage of user defined arbitrary waveforms

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Manual - 首頁- B&K Precision