Model 835-3 User`s Manual - Berkeley Nucleonics Corporation
Contents
1. Start the sweep by pressing the RF On Off button The submenu can always been exited without starting the sweep by pressing the menu key Number of Points per Sweep On dwell time Off time Repetition ALC on off Figure 19 Displays shown for the power sweep configuration 28 List Sweep Submenu After accessing the List Sweep submenu the first of total two displays allow to enter start and stop power by using the gt lt keys to select the digits and using the rotary knob to increase and decrease their values Use the 4 7 arrow to move between the several displays that contain settable sweep parameters On the first display the number of repetitions of the list can be entered and the ALC can be set on or off On the second display a particular list can be selected from the flash memory of the device Start the sweep by pressing the RF On Off button The submenu can always been exited without starting the sweep by pressing the menu key Repetition ALC on off Figure 20 Displays shown for the list sweep configuration 29 Important note All sweeps must be started with the RF on off button on green light illuminated otherwise no signal will be output during the sweep Modulation Submenu After accessing the Modulation menu use the arrow keys to select the desired submenu entry Press the menu key to enter the selected submenu Choose EXIT to return to the main menu Pulse Modulation Am2. Model 835 3 User s Manual Fast Switching Low Noise Signal Generator Berkeley Nucleonics Corporation Tel 415 453 9955 info berkeleynucleonics com Fax 415 453 9956 www berkeleynucleonics com Contents Ls Introduction EOCENG G3 9 3 ita Vi IAS 4 General Features and FUNCtiOonS an 4 OBUON Srs ae Rn ae 4 Front Panel Overview NON HC version ccce cece cece an 5 Rear Panel Connect ea RAR be aa biak EN RENA SBL e io 6 2 GENO Se nan 7 System Reguler henti see arc 7 UNPACKING ENG Oo rada oia TN Gea adan Don kaan add 7 Pa ae dra ia 7 MaN NE 559 3 in 7 ADDIVINO POW en as 8 Connect WAN SE RA A A err 8 Connecting to Pe Without LAN anne dna AA AAA ANISA isis 8 Installing the 835 3 Remote CliehE coooo o o tardara dira i raniweninantars 8 Troubleshooting the LAN Interconnection rr rnnnnnnnannnnnns 9 SHEE DOWN TNE G33 Kasie nisan Kanan A Man Aa Kana RAKUS dans 9 3 Using the Graphical User Interface GUI 9 Stall the 83543 GU tone mane a Ren Dan Ao Rea 9 Controlling Multiple Signal Generators from ONE PC 10 NetWork COMM GQUFAUON tt 10 Perform Firmware UDG Ades oat ade ras 11 Store and Revoke Instrument States occccccccccccccccncncncnccncnnnnnnnn rra narrar narrar 11 USINO FOODS sarria ti ld da nara 12 Basic EW ODeratiO Nai dais 13 AA 14 Freduiency SWeep FOUE Tia A AA ENG 14 Frequency near SW CCD vis here ah re One hee aa one Heri Pin arah Bath 15 Freguency Lod S Weeb misseri tensori on raras
3. N times where N is the number of list points The input file must be a 4 column CSV file with the following syntax on each line frequency in Hz power in dBm dwell time in us off time in us Note the four entries in each line must be separated by a semicolon Figure 10 shows a valid list file with four points displayed in Microsoft Excel Each line describes one list point The first line must contain all for entries in any other line entries may be omitted Lists may contain up to 3 501 lines The dwell time must be at least 50 us The off time may be set to zero if the output is not to be disabled during transients The sum of dwell time and off time must at least 17 1 0 ms Transient times depend on the frequency steps and are typically less than 10 us for a 100 MHz step The number of repetitions determines how many times the lists will be executed A Figure 9 LIST SWEEP tab FA Microsoft Excel list_4entries 264 E Fie Edit view Insert Format Tools Data Window Help DENSA t Ba n AQUDODOCION 10 2500 SU 2420000000 6 8 2800 500 440000000 10 2500 SUL 460000000 15 5 2500 SUL Figure 10 CSV file with four points 1 column frequency in Hz 2 power in dBm 18 3 dwell time in us 4 off time in us Values must be separated by semicolon Modulation Control The 835 3 provides various modulation capabilities that can be accessed by the MODULATION tab Figure 11 On the left t
4. When auto is selected the off time is automatically adjusted such that during switching transients the output is disabled and the sum of dwell and off time are at least 400 us Select if the sweep should be run a predefined number of times enter desired number or infinite times selecting infinite Select ALC settings Start and stop the sweep by pressing the ON OFF button 15 Figure 7 FREQENCY SWEEP tab List Sweeps Figure 9 List sweeps allow to set frequency output power dwell time and off time for each entry individually To start a list sweep the following steps are required 16 a select sweep parameter select indexing upload list file from computer CSV file select number of repetition e select the ALC mode on hold or off Generally ALC on is used If very short dwell times 1 2 ms are needed the ALC can be set to hold This way the ALC loop is disabled during the sweep The ALC voltages are calibrated before the sweep to maintain high level accuracy during the sweep start sweep with on off button Figure 8 POWER SWEEP tab You can select if you want frequency output power or both to be swept If only one of the two parameters is selected the second parameter is held constant during the sweep The value is set to the value in line 1 of the CSV file You can choose the indexing of the list to go up down or be random If you select random indexing the index is randomly chosen for
5. e trigger type single point complete sweep or gated Confirm settings and arm trigger by pressing the Apply button 21 As soon as a sweep is programmed the output is disabled while the trigger is expected Upon arrival of the trigger the sweep is executed after given trigger delay Any trigger signal arriving during execution of the sweep will be ignored If single sweep has been selected the sweep will be executed only once as soon as first trigger signal arrives As soon as the sweep is completed the frequency will return to the preset CW frequency If repeat sweep is selected the sweep will be executed every time the trigger signal arrives After the sweep is completed the frequency the RF output is disabled until next trigger arrives With trigger type the user can select the trigger either to execute only a single point from the sweep or the complete sweep When gated is selected the sweep is only executed while the trigger signal is high E IE o Tao File Controller View Info QUAN a CONTROL cw SWEEP MODULATION REFERENCE TRIGGER LF OUT Trigger Mode Trigger Parameter C Single INIT CONT OFF Arm pee lete ist TRIG TYPE NORM Repeat INIT CONT ON Execute single entry TRIG TYPE POIN C Gated TRIG TYPE GATE Trigger Source Off IMMediate Use every fi 1 255 event RF on off pushbutton KEY delay trigger by 0 us LAN Trigger BUS Trigger awy C Extemal Trigger EX
6. 1 Place the 835 3 on the intended workbench and connect the appropriate DC power supply to the receptacle on the rear of the unit Make sure you use the included DC power supply The 835 3 requires 6 V DC at 3 A maximum Using other supplies may lead to malfunction and damage of the Model 835 3 2 Press the Line on off switch on the rear panel The front panel display will illuminate The instrument will initialize and momentarily display the model number firmware revision and product serial number The display will then switch to the factory default display setting showing preset frequency 100 MHz and power 0 0 dBm phase lock status internal reference and instrument IP number 0 0 0 0 Connecting to LAN Connect the 835 3 to your local area network LAN or directly to your PC Labtop using the Ethernet cable The instrument is configured to accept its dynamic IP number from the DHCP server of your network If configured properly your network router will assign a dynamic IP number to the instrument which automatically will be displayed on the screen Your instrument is now ready to be controlled Connecting to PC without LAN If you want to connect the instrument directly to your computer without router in the LAN you must use an Ethernet cable with crossover not required if your computer has Gigabit Ethernet To work properly the network card NIC of your computer must be configured to use DHCP If your computer runs on a fi
7. 15 Frequency Random SWeeP Jan 15 Power Sweep FIQUE O ea man a A Pane aa 15 LISE SWeCDS CPIGUIC Ga SA 16 Modulation CONTO anda 19 Rere Pe un ena bb Ren Arun AR 20 Using the Trigger options Figure 14 o oo aan 21 LE OU CON PO ti Bean AN Ne a UR Ata 23 Combined Modul ae ibn anna ARO KAA 24 4 Local Operation HG Option senen anta mana aan ANN ea Oa ARE 24 Displayed Parameter Formats o nn rr rr 25 CVV Bia an Na BNN aa na Rn Na an piers NN SN NN NAN an Sa 25 Maln MENU DS ay ne anda 26 Fred ency Sweep eh AA AAN ASAS 27 Power SWEEP Sub Men Uas et bet oi 28 List Sweep SU Ki bea ane 29 Modulation SUDMENU ra an ANN eni Der bb apa 30 PUISe Moa SU MN a ia di 30 Ambplitude MOG Sub Menu enamel borane inai kamen ia BR Pen Dena pa ena 31 Frequency Mod SUDMENU Kao coat card an ka Ra da Ken Daan akan YAN Ta LAN SMA KAA RANK 31 Rererencs SUDMen aia noah 32 Male ls sign ee ea UAN Na 32 EE Oo Sup en As 33 LPAN Contigurati n SUb Men wa ba ana SAS 34 Display Settings SUDIMNGNU aa Kn aa 35 0 Programming MS SIS ana 35 USING SOCKEES LAN carac air cas 36 Usina and Configuring VAI Errata AAA is 36 USING SCP ho O IIR riadas 37 Using Tenet AN otra A na 37 Te Battery Operation BIO DUDO aaa ion 38 8 Extended Power Range PE PE2 Options ccccccccccccccccccnnnncnca an 40 9 Maintenance and Warranty INforMati0N ccccocccccccnnnnnccncnccnnnnnnnnnnnnnn an 40 Adjustments and Callbra OA riada deidad 40 ROD ai tor i
8. Bm option PE PE2 150 0 to 25 dBm Resolution 0 1 dB Phase lock External reference disabled not locked or locked to integer multiple of 1 MHz Range 1 to 100 MHz LAN The current IP address of the instrument Rear Panel Connections Figure 2 835 3 Rear Panel View 1 Power switch The power switch disconnects the signal generator from the DC input completely including the internal high stability reference After switching on this switch the signal generator enters into standby with the OCXO warming up and RF out switched off The red power LED option HC only on the front panel is turned on 2 DC IN power receptacle The power receptacle accepts a two pin plug from the external 6 V DC power adapter 3 RJ 45 host connector Used for connecting with a controller such as a PC or Labtop 4 FM PM MOD IN connector This BNC input connector accepts a O to 2 V peak signal for FM modulation The damage level is 4 Vrms 5 REF IN connector Female BNC connector accepts a TTL or 5 to 15 dBm sine signal from an external reference oscillator that is within 1 ppm of the programmed reference frequency The nominal input impedance is 50 ohm 6 TRIG IN connector Female BNC connector accepts a TTL signal from an external trigger source The input impedance is 1Mohm 7 PULSE MOD IN connector This BNC input connector accepts TTL signal for pulse modulation The damage level is 3 Vrms 8 REF OUT connector Female BNC connector is for an outpu
9. Rand will sweep the frequencies in a random manner until terminated by user In all cases the frequency returns to the CW frequency as soon as the sweep is terminated Start and stop the sweep by pressing the ON OFF button The switching transient between frequency steps depends on the step size and if internal bands of the synthesizer are crossed Typical switching transients are lt 10 us for a lt 100 MHz step no band crossing and lt 50 us for arbitrary steps at output frequencies gt 143 MHz Transients of 100 us can be noticed for arbitrary steps at output frequencies lt 143 MHz Transients of 400 us occur only when switching from above 400 MHz to a frequency below 400 MHz 14 Frequency Linear Sweep Sweeps linearly from start to stop frequency in constant steps Frequency step size is f stop f start number_of points If start lt stop then negative frequency steps are performed Frequency Log Sweep Sweeps logarithmically from start to stop frequency in a given number of points per decade Frequency Random Sweep The output frequency is selected randomly between start and stop frequency The number of different output frequencies is determined by the number of points selected by the user Power Sweep Figure 8 To run a power sweep enter start and stop power in dBm unit the number of steps dwell and off time in milliseconds Dwell time is at least 50 us the sum of the dwell and off time must be at least 400 us
10. Ternal P Connection established to 192 168 1 39 Figure 14 TRIGGER tab 22 LF OUT Control The 835 3 rear panel output FUNCT OUT can be programmed using the LF OUT tab Figure 15 The FUNCT OUT output can be used as e Video output of the internal pulse modulation signal e Trigger output e Output of the low frequency generator In the GUI select which output to be used and enable it by pressing the ON OFF button The low frequency generator can output sine wave triangle or a square wave The frequency can be set from 1 Hz to 5 MHz The amplitude of the sine wave and triangle can be set for the sine wave and the triangle If square wave ist selected the output is not affected by the amplitude settings and gives a constant 5 Volts peak peak amplitude The output impedance for sine and triangle wave output is 50 ohms for square wave trigger and pulse modulation video it is high impedance CMOS and TTL logic compatible LF Generator Frequency A A A A A A A goo AMBANG ANK AWB ARK AR 4 Amplitude A A A A 4 000 MA AI A Shape Sine Triangle C Square 5 Vpp Connection established to 192 168 1 45 Figure 15 LF OUT tab 23 Combined Modulation The table below shows what modulation types can be active simultaneously The LF output can be used independently of all modulation types Table 1 Possible combinations of internal and external modulation and the internal LF gene
11. and controlled by a LAN based computer LAN and its associated interface operations are defined in the IEEE 802 2 standard The 835 3 support the following LAN interface protocols 1 Socket based LAN proprietary function calls defined in the dynamic link library DLL provided with the instrument used for general programming using the LAN interface under Windows operating system 2 VXI 11 SCPI version 1999 commands firmware 2 0 upwards 35 3 Telephone Network TELNET TELNET is used for interactive one command at a time instrument control For LAN operation the signal generator must be connected to the LAN and an IP address must be assigned to the signal generator either manually or by using DHCP client service Your system administrator can tell you which method to use Most current LAN networks use DHCP DHCP Configuration If the DHCP server uses dynamic DNS to link the hostname with the assigned IP address the hostname may be used in place of the IP address Otherwise the hostname is not usable Using Sockets LAN Sockets LAN is a method used to communicate with the signal generator over the LAN interface using the Transmission Control Protocol Internet Protocol TCP IP A socket is a fundamental technology used for computer networking and allows applications to communicate using standard mechanisms built into network hardware and operating systems The method accesses a port on the signal generator from which bidirectio
12. ble the pulse video output If LFG is selected use the Y arrow to proceed to the second display Select waveform between sine triangle or square Then enter the desired output frequency and voltage amplitude 33 Figure 27 Displays shown in the LF OUTPUT submenu LAN Configuration Submenu After accessing the LAN Configuration menu use the 4 arrow keys to move cursor between IP address and submask address Use the rotary knob to change selected digit The display shows up as follows Figure 28 LAN configuration submenu display 1 Once you have done changes as required press the menu key to continue the configuration to the second display The display shows up as shown below 34 Figure 29 LAN configuration submenu display 2 Use the rotary knob either enable x or disable DHCP Finally press the RF key to save the configuration don t if you want to discard your changes Press the menu key to exit the LAN submenu Display Settings Submenu After accessing the Display Configuration menu use the rotary knob to change the display contrast as required Press the menu key to save and exit the Display Settings submenu Figure 30 Display settings submenu 6 Programming the 835 3 The signal generator can be remotely programmed via a 10 100 1000Base T LAN interface and LAN connected computer using one of several LAN interface protocols The LAN allows instruments to be connected together
13. ctly via the GUI Make sure you are connected to the right device and have the correct binary ready Then go to Controller gt Update Firmware and select the appropriate binary that you have received from BNC or downloaded from the BNC website The update will take a few seconds and after completion the device will reboot Reconnect to the device and continue using the device Store and Revoke Instrument States Ten different memory states are available to store the Frequency Power pairs By clicking on the Memory Settings button the currently saved memory settings are displayed and can be modified as shown in Figure 5 To modify or enter a state click on the appropriate line and enter Frequency in Hz and Power in dBm Memory 1 is used as default state when the 835 3 is powered up The 10 memory states can be accessed via the RF on off button on the front panel Press the RF on off button for about three seconds until the memory setting is displayed on the screen Release the button and browse through the ten memory states by pressing the RF on off button quickly To select the currently displayed memory state press the RF on off button and hold it for another three seconds The instrument settings are updated from memory and the display now shows the CW parameters 11 Memory Organisation Ay MEMORY Frequency Hz 1 2200000000 0000 Frequency 2200000000 0000 Hz Power 0 5 dBm Figure 5 Memory Settings Subme
14. e desired menu position and press the menu key 26 Frequency Sweep Submenu After accessing the Frequency Sweep menu first of three displays allows to enter the start and stop frequency by using the gt lt keys to select the digits and using the rotary knob to increase and decrease their values Use the 4 arrow to move between the several displays that contain settable sweep parameters On the second display the number of points and the on and off time can be entered On the third screen select the sweep mode between LI Near LOGarithmic and RANDom Also select the repetition mode between INFinite and 1 single repetition Start the sweep by pressing the RF On Off button The submenus can always been exited without starting the sweep by pressing the menu key Number of Points per Sweep On dwell time Off time Sweep Mode Repetition ALC on off Figure 18 Displays shown for the frequency sweep configuration 27 Power Sweep Submenu After accessing the Power Sweep menu the first of total three displays allow to enter start and stop power by using the gt lt keys to select the digits and using the rotary knob to increase and decrease their values Use the 4 T arrow to move between the several displays that contain settable sweep parameters On the second display the number of points and the on and off time can be entered On the third display select the repetition mode between INFinite and 1 single repetition
15. e set in the SWEEP tab Figure 7 Select frequency power or list sweep by clicking on the FREQ SWEEP POWER SWEEP or LIST SWEEP tab respectively Frequency Sweep Figure 7 To start a frequency sweep a enter start and stop frequency in Hz unit enter the number of points or points per decade c enter the dwell time in milliseconds min dwell time is 50 microseconds enter the off time in microseconds select the sweep mode as linear or log additionally click random if random sequence is desired f select the repetition mode enter number of repetitions or choose infinite g select the ALC mode on hold or off Generally ALC on is used If very short dwell times 1 2 ms are needed the ALC can be set to hold This way the ALC loop is disabled during the sweep The ALC voltages are calibrated before the sweep to maintain high level accuracy during the sweep h press the on off button The time resolution is 200 ns Note that the sum of the dwell time and the off time must be greater or equal 1 0 ms The dwell time must be at least 50 us the off time can be also be O no off time When auto is selected the off time is automatically adjusted such that during switching transients the output is disabled and the sum of dwell and off time are at least 1 0 ms Under repetition mode you can select how many times the sweep should be executed by entering 1 to N times or select infinite Selecting
16. g 835 3 instruments In the CONTROL tab see Figure 3 the detected Devices are displayed Clicking on one of the devices will instantly establish connection Clicking on a different device will disconnect the old device and connect to the selected device By clicking on the Refresh button a scan for new devices is started File Controler View Info LEQ094 9 a CONTROL cw SWEEP MODULATION REFERENCE TRIGGER LF OUT Detected Devices 5 ID DeviceNeme IP INSTRO 192 168 1 100 INSTRO 192 168 1 45 INSTRO 192 166 1 38 INSTRO 192 168 1 39 LAN Configuration amp Memory Settings Network Configuration Memory Settings Figure 3 CONTROL tab Controlling Multiple Signal Generators from one PC You can easily control multiple 835 3 from a single computer over the LAN connection but you need to start a separate GUI for every instrument Network Configuration The Network Configuration button allows configuring the LAN settings as shown in Figure 4 Using a DHCP server can be enabled or a static IP can be entered by user The device name can be modified as desired The unit serial number and firmware revision are displayed on the bottom 10 Network Configuration V use DHCP IPAdress 192168141 Netmask Gateway 192 168 1 1 7 Device Name INSTRO Serial Firmware se Figure 4 Network Configuration Submenu Perform Firmware Upgrade A firmware upgrade of the 835 3 can be done dire
17. g Telnet LAN Telnet provides a means of communicating with the signal generator over the LAN The Telnet client run on a LAN connected computer will create a login session on the signal generator A connection established between computer and signal generator generates a user interface display screen with gt prompts on the command line Using the Telnet protocol to send commands to the signal generator is similar to communicating with the signal generator over LAN You establish a connection with the Signal generator and then send or receive information using predefined commands SCPI commands are supported from firmware version 2 0 Communication is interactive one command at a time The telnet service is available on port 18 Please see the 835 3 Programmer s Manual for further details 37 7 Battery Operation B3 Option If your 835 3 is equipped with an internal rechargeable battery B3 option it can be operated without the external power supply Fully charged the battery is good for up to three hours of operation at full RF output power The same external power adaptor 6 V 3 A is used for the battery version as for the standard 835 3 for both normal operation and charging of the battery There are four operating modes that are also summarized in Table 2 below normal operation the external power supply is connected to the 835 3 and the device is turned ON with the power switch on the rear panel turned ON In thi
18. g the VXI 11 interface The program is used to configure the LAN 36 client Once the computer is configured for a LAN client you can use the VXI 11 protocol and the VISA library to send SCPI commands to the signal generator over the LAN interface Example programs are available on request VISA is an 10 library used to develop IO applications and instrument drivers that comply with industry standards It is recommended that the VISA library be used for programming the signal generator The NI VISA and Agilent VISA libraries are similar implementations of VISA and have the same commands syntax and functions Using SCPI for 835 3 The Standard Commands for Programmable Instrumentation SCPI provides a uniform and consistent language to control programmable test and measurement devices in instrumentation systems The SCPI Standard is built on the foundation of EEE 488 2 Standard Codes and Formats It requires conformance to EEE 488 2 but is pure software standard SCPI syntax is ASCII text and therefore can be attached to any computer test language such as BASIC C or C It can also be used with Test Application Environments such as LabWindows CVI LabVIEW or Matlab SCPI is hardware independent SCPI strings can be sent over any instrument interface It works equally well over GPIB RS 232 VXI bus or LAN networks Please see the 835 3 Programmer s Manual V 1 2 for detailed description of Supported SCPI commands Usin
19. he internal pulse modulation can be preset and started with the ON OFF button Enter pulse width and modulation period in milliseconds as required Note that pulse width accuracy is approx 0 1 us When external pulse modulation is used the ext Pulse Enable must be checked Invert the polarity of the external video signal by checking Inverse Polarity The internal AM can be enabled by pressing the ON OFF button in the AM portion of the Submenu Modulation depth can be selected from 1 to 99 AM modulation rate can be set from 1 Hz to 10 kHz The frequency and phase modulation settings can be accessed by selecting tab FM PM Figure 12 Enter the desired sensitivity per Volt for either frequency or phase modulation and press the ON OFF button The BNC connector FM PM on the rear panel is now activated Connecting the FM PM input to the FUNCT OUT output by a50 Q BNC cable generates internal modulation The internal low frequency generator is used to provide the modulation signal see the chapter about the LF OUT control Figure 11 MODULATION tab for pulse and AM modulation 19 Figure 12 MODULATION tab for frequency and phase modulation Reference The 835 3 can be locked to an external frequency reference by connecting to the external reference input in the rear panel To enable the external reference go to the REFERENCE tab Figure 13 Click Use ext reference and enter the reference frequency The reference frequency must be an intege
20. i ea ion cola EN TA 40 SO aii NASA aan 41 Waranty AT iat lol sistas asa eG anid SAA Add 41 EQUIPMent Re aa A A as 41 COMPANY Detall unidad A aa A ARAN 42 1 Introduction to the 835 3 Your Model 835 3 Series Signal generator kit contains the following items 835 3 mainframe Universal power adaptor AC 100 240V with UK US EU plugs Ethernet Cable 835 3 software CD 835 3 Get Started Manual It is strongly recommended to use the original power adaptor as supplied with the device to guarantee save and reliable operation of the 835 3 General Features and Functions The BNC Model 835 3 RF Signal Generator provides 9 kHz to 3300 MHz frequency range settable to 3400 MHz 30 to 13 dBm power levelled range option PE 100 to 13dBm option PE2 135 to 13 dBm Modulation capabilities for FM PM AM and pulse modulation Fast frequency power and list sweeps Light weight optinal internal rechargeable batteries 3 inch status LCD e Long term support Software upgrades firmware and PC based are available to download You can also call our technical specialists for support You can continue to use both of these services free of charge for the lifetime of the product Universal LAN interface 18 months calibration cycle Options B3 internal rechargeable battery 3 hours operation HC front panel user interface with rotary knob PE extended power range 100 to 13 dBm PE2 extended power range 135 to 13 dB
21. ining functions of the 835 3 HC in local mode CW Display The Main or CW Display is shown after the instrument has successfully booted and is ready The four line display has the following format Frequency Power Ref Frequency IP Address The currently active display position is shown by the cursor underline symbol The cursor does not move beyond the field of the currently selected parameter Rotate the front panel knob to modify the value Clockwise rotation increases the parameter and counter clockwise rotation decreases the parameter The parameter value will continue to increase or decrease by the amount of the selected resolution until it reaches the maximum or minimum limit of the parameter Use the up and down keys 4 7 on the front panel to switch between frequency and power Use the left and right arrow keys gt lt to select the active digit The resolution step size is selected by positioning the cursor at the appropriate digit and then turning the front panel rotary knob 25 Main Menu Display The Main Menu Display is invoked my pressing the menu key The main menu contains eleven submenus as shown below Figure 17 Overview of the submenus available on the display Use the up and down arrow keys 4 7 or the rotary knob on the front panel to scroll the main menu The arrow on the left displays the selected position To enter a submenu move the arrow displayed at the left of the menu points to th
22. l number can be found on the rear of the 835 3 unit next to the power plug You will get a Return Mechandise Authorization RMA number from BNC please put it on the outside of the package Instruments that are eligible for in warranty repair will be returned prepaid to the customer For all other situations the customer is responsible for all shipping charges An evaluation fee may be charged for processing units that are found to have no functional or performance defects For out of warranty instruments BNC will provide an estimate for the cost of repair Customer approval of the charges will be required before repairs can be made For units deemed to be beyond repair or in situations where the customer declines to authorize repair an evaluation charge may be assessed by Berkeley Nucleonics Company Contact Information Berkeley Nucleonics Corp 2955 Kerner Blvd San Rafael CA 94901 Tel 415 453 9955 Fax 415 453 9956 info berkeleynucleonics com www berkeleynucleonics com 42
23. l reach its best performance after the first few charge discharge cycles 2 Always use the external power adaptor supplied with the 835 3 for normal operation and charging This will make sure that the charging circuits work as specified 3 Fully charge the 835 3 after running it from the battery for an extended period of time 4 Ifan 835 3 with internal battery will be stored for a long period of time fully charge it before storage then remove the power adaptor and make sure that the power switch is in the OFF position After storage first charge the unit for 4 6 hours To replace the battery at the end of its lifetime please contact BNC or one of its distributors Before using the 835 3 in battery mode for the first time the battery must be fully charged Batteries must be disposed off according to the local environmental regulations 8 Extended Power Range PE PE2 Options The 835 3 is available with options extending the power range towards lower power levels With these options installed the minimum settable power level in CW operation is extended down to 150 dBm For the guaranteed minimum power level please consult the respective datasheet In POWER SWEEP Mode the user shall avoid running sweeps over large power ranges gt 30 dB for extended periods of time as this will result in continuous switching of the mechanical attenuators and thus reduce the lifetime In sweeps where the mechanical attenuator is
24. lay d HBR BER HHA H GHz SA dEn internal reference LAM 192 165 143 Figure 31 CW Display with Battery Symbol Hints for maximizing the battery running time 1 Fully charge the unit before use For this toggle the power switch to ON and then OFF again while the 835 3 is powered by the external power adaptor This will initiate a new charge cycle 2 Charging time of a completely discharged battery can be up to 6 hours The battery will only be charged when the 835 3 power switch Is in the OFF position 3 Batteries should always be charged at room temperature Charging the 835 3 at very low or at elevated temperatures may result in early termination of the charging process i e the battery is not fully charged For safety reasons the charging does not start when the internal temperature of the instrument is above 50 C 4 Check the battery indicator in the upper right corner of the display it should indicate full charge when running on battery power after charging 4 segments 5 Power consumption of the 835 3 is reduced when the RF power is switched off thereby increasing overall battery run time Battery run time is maximum for ambient temperature between 15 and 25 C Self discharge of the battery is much faster at temperatures above 30 C 7 Avoid storing the 835 3 in very hot places such as behind the windshield of a car parked in the sun Hints for maximizing battery life expectancy 39 1 The battery wil
25. m RM 19 rack mount kit Unless noted otherwise this manual describes the basic version of the instrument Front Panel Overview non HC version The front panel contains a status display a RF output female N type connector and a RF on off key Figure 1 The LCD screen shows information on the current function Information includes status indicators frequency and amplitude settings current connectivity status and error messages gt a gpu A z TT gt e 0 RF 50 Q RF on off O o Figure 1 835 3 Front Panel View RF On Off button The ON OFF key toggles between RF output on and RF output off The green light is indicating whether the RF output is enabled light on or not RF 500 connector This female N type connector provides the output for RF signals The impedance is 50 ohm The damage level is 30 dBm maximum The maximum allowed DC level is 10 V Displayed Parameter Formats Main LCD display There are two parameters displayed in the main menu frequency in Hz 1 line and RF amplitude in dBm 2 line On the 3 line the lock status to an external reference source is displayed The 4 line provides IP address of the controlled source The display is updated each time a value is changed Frequency The current value for center frequency Units Hz Range 9 000 to 3 400 000 000 Hz Resolution 0 001 Hz Amplitude The current value for output power Units dBm Range 70 0 to 25 0 d
26. missions and Immunity standard The 835 3 also meets the intent of the Low Voltage Directive and have been designed to meet the IEC 61010 1 2001 safety requirements for electrical equipment control and laboratory use standard Warranty Information All BNC instruments are warranted against defects in material and workmanship for a period of one year from the date of shipment BNC will at its option repair or replace products that prove to be defective during the warranty period provided they are returned to BNC and provided the preventative maintenance procedures are followed Repairs necessitated by misuse of the product are not covered by this warranty No other warranties are expressed or implied including but not limited to implied warranties of merchantability and fitness for a particular purpose BNC is not liable for consequential damages The warranty on the internal rechargeable batteries option B3 is one year from the date of shipment Battery replacement is available through BNC and its distributors Equipment Returns For instruments requiring service either in or out of warranty contact your local distributor or the BNC Customer Service Department at the address given below for pricing and instructions before returning your instrument When you call be sure to have the following information available e Model number e Serial number 41 e Full description of the failure condition Note Model and seria
27. nal communication with a network computer can be established Sockets LAN can be described as an internet address that combines Internet Protocol IP with a device port number and represents a single connection between two pieces of software The socket can be accessed using code libraries packaged with the computer operating system Two common versions of socket libraries are the Berkeley Sockets Library for UNIX systems and Winsock for Microsoft operating systems Your signal generator implements a sockets Applications Programming Interface API that is compatible with Berkeley socket for UNIX systems and Winsock for Microsoft systems The signal generator is also compatible with other standard sockets APIs The signal generator can be controlled using predefined SCPI functions available from firmware 2 0 upwards use the socket connection established in your program Socket connection is available on port 18 Using and Configuring VXI 11 The signal generator supports the LAN interface protocol described in the VXI 11 standard VXI 11 is an instrument control protocol based on Open Network Computing Remote Procedure Call ONC RPC interfaces running over TCP IP A range of standard software such as NI VISA or Agilent 1O Config is available to setup the computer signal generator interface for the VXI 11 protocol Please refer to the applicable software user manual and documentation for information on running the program and configurin
28. nu In option HC instruments all settings are individually controlled the RF on off button does not provide this function Using Toolbars In this Software Version there are two Toolbars available Standard toolbar 24 El SS Close the Application Connect Disconnect Save to Memory Network Configuration le s Reset System Restart Controller 2 2 APSIN 3000 192 168 1 55 Network toolbar 12 2 APSIN 5000 192 165 1 55 X 2A A Rescan devices Connect Disconnect Network Configuration device selection Basic CW Operation The 835 3 is a laboratory instrument designed to generate a synthesized CW signal with good spectral purity and variable amplitude To set a desired frequency relative phase and amplitude click to the CW tab Figure 6 The desired frequency phase and power can be set by clicking on the up and down arrows above and below each digit The frequency is settable in steps of 0 001 Hz the phase is settable in steps of 0 1 deg and the power in steps of 0 1 dB The RF ON OFF button turns the RF power on and off The green LED in the RF ON button indicates that the RF output is enabled The Save to Memory button allows you to save the current frequency power pair to be stored in one of the ten internal memory states Figure 6 CW tab 13 Sweeps Besides the basic CW operation the 835 3 supports several frequency and power sweeping modes Sweep parameters can b
29. of the Software If no internet connection is available use the NET Framework that is available on the installation CD Software cannot detect any 835 3 e Make sure you have connected both PC and 835 3 to a common network e Ifa direct connection is used make sure you use an appropriate crossover Ethernet cable 10 and 100Mbit LAN only Note that detection of the 835 3 can take several seconds e Make sure that your software firewall enables the 835 3 software to setup a TCP IP connection within the LAN Under Windows XP you can do that like this Open Control Panel under Settings in your Start menu Then go to Windows Firewall Click on Exceptions and then add Program If the Software Is in this list choose it and click OK otherwise you have to browse for the path to BNC Software Finally close all open dialogs with OK Now your Windows Firewall is ready for 835 3 Shutting Down the Model 835 3 Press the Line on off switch on the rear panel to off 3 Using the Graphical User Interface GUI BNC s graphical user interface provides an intuitive control of the 835 3 It runs under any Windows 2000 XP or Vista operating system Make sure the software is installed properly and the computer s firewall configured properly Start the Model 835 3 GUI Double click the 835 3 shortcut that will appear on your desktop after the software has been successfully installed After start the software will automatically detect existin
30. plitude Modulation Frequency Modulation Figure 21 Modulation submenu Pulse Mod Submenu In the Pulse Mod submenu the pulse modulation can be accessed Use the 4 arrow keys to move the cursor to the parameter that you want to change Use the gt lt and rotary knob to modify the parameters On line 1 select between INT internal pulse generator and EXT external input 30 If internal modulation INT is selected go to line 2 to change pulse width to desired value and go to line 3 to change pulse modulation frequency Enable modulation by pressing the RF On Off button Exit the submenu by pressing the menu key Figure 22 Pulse Modulation submenu Amplitude Mod Submenu In the Amplitude Mod submenu the internal amplitude modulation can be accessed Use the rotary knob to set the modulation rate between 1 Hz and 10 kHz Enable modulation by pressing the RF On Off button Exit the submenu by pressing the menu key Figure 23 Amplitude Modulation submenu Frequency Mod Submenu In the Frequency Mod submenu the external frequency modulation can be accessed Enable modulation by pressing the RF On Off button Exit the submenu by pressing the menu key 31 Figure 24 Frequency Modulation submenu Reference Submenu After accessing the Reference menu use the Y 7 arrow keys to move the cursor between the ON OFF entry and the reference frequency entry Use the rotary knob to toggle between ON and OFF o
31. r multiple of 1 MHz The maximum frequency is 100 MHz Enter the reference frequency as appropriate The lock status Is shown as Locked green color or Not Locked red color Note that if phase lock is not achieved the applied external reference frequency deviates by more the 1 0 ppm from the entered reference frequency Make sure that your reference has the required accuracy 20 O uHMAY a CONTROL CW SWEEP MODULATION REFERENCE TRIGGER LF OUT M Use ext Reference Ext Reference A A A 1 MHz 1 100 Y Y Y Not Locked P Connection established to 192 168 1 39 Figure 13 REFERENCE frequency setting Using the Trigger options Figure 14 The 835 3 supports internal and external triggering for frequency power and list sweeps To set the trigger options go to the TRI GGER tab as shown in Figure 14 Various trigger sources are available a the trigger key which is the RF on off button b LAN SCPI c external input at the rear panel currently shared with the pulse modulation input The external TRI GGER input should be a TTL logic signal The following trigger parameters can be defined a trigger delay 50 us to 10 sec in 1 us resolution predefined delay after trigger signal arrives The trigger delay uncertainty is 2 us b trigger modulo N 1 to 255 defines every Nth trigger event to be used c trigger active edge positive or negative d trigger occurrence single event or repeated
32. r to change reference frequency to the desired value respectively The display shows up as follows Reference ON OFF Ref Frequency Figure 25 Reference submenu Confirm the setting by exiting the menu pressing the menu key Trigger Submenu After accessing the Trigger menu use the 4 gt lt arrow keys to move cursor between the various menu entries Use the rotary knob to toggle the selected entry value or to change selected digit The display shows up as follows Trigger Source 32 Continues Figure 26 Trigger submenu Trigger Slope Retrigger on off immediate Trigger delay Select SOURce MMediate EXTernal BUS SCPI command KEY RF on off button Select SLOPe POSitive NEGative Select CONTinuous ON OFF ON means that the trigger is re armed after each trigger occurance Select RETRigger OFF ON MMediate OFF means that any trigger event during execution of list is ignored Enter DELAY trigger delay in microseconds Press the RF On Off button to arm the trigger Exit the menu by pressing the menu key LF OUTPUT Submenu In the LF OUTPUT Submenu the FUNCT OUT output at the rear panel of the instrument can be configured Press the RF On Off button to turn the output on and off Exit the menu by pressing the menu key On the first screen the source for the FUNCT OUT can be selected Choose LFG for the low frequency generator TRIG to enable the internal trigger output and PULM to ena
33. rator output NO Ext FM PM Int AM Int Pulse Mod Ext Puls Mod Int AM Int Pulse Mod Ext Puls Mod Notes 1 Always enable internal AM before the external Pulse Modulator 4 Local Operation HC Option With the HC option the instrument is controllable directly from the front panel Moreover simultaneous control via front panel and GUI is possible The HC option adds keys and a rotary knob to the front panel Figure 16 shows the front panel view of the 835 3 with HC option Figure 16 835 3 Front Panel View RF On Off button The ON OFF key toggles between RF output on and RF output off The green light is indicating whether the RF output is enabled light on or not RF 500 connector This female N type connector provides the output for RF signals The impedance is 50 ohm The damage level is 30 dBm maximum The maximum allowed DC level is 10 V 24 Rotary knob Varies the value at a cursor position maked by the _ symbol Moves the entry cursor within the various submenus Menu Key This is a multifunction key The key is used to enter and leave all the submenus displayed on the screen y lt Keys These keys are used to move cursor within the screen menus LAN LED illuminates as soon a remote connection via LAN is active Power LED illuminates when system is powered up Displayed Parameter Formats This section describes how to edit the frequency and amplitude and how to invoke the rema
34. s mode the 835 3 can be used as if no battery was present The internal battery is not used and will NOT be charged charging the external power supply is connected to the 835 3 and the device is turned OFF with the power switch on the rear panel turned OFF In this mode the 835 3 is charging the internal battery Once the battery is fully charged the 835 3 goes into standby mode The time required to complete charging is approx four hours standby the internal battery is fully charged and the 835 3 is turned OFF battery operation the external power supply is disconnected and the device is turned ON The internal battery is supplying the power until it is exhausted Table 2 Operating modes of an 835 3 equipped with internal battery External power Supplying power disconnected adaptor Power Switch Normal operation Battery operation until no charging discharged 1 Charging when fully Completely powered off charged gt standby 2 Notes 1 The 835 3 will switch off automatically when the battery is discharged It Is recommended that the power switch be turned to the OFF position when the battery is fully discharged 2 Termination of charging is automatic the unit will then enter standby mode The power adaptor can be left connected for any length of time 38 During operation the approximate remaining battery capacity is indicated by the battery symbol visible in the upper right corner of the disp
35. switched the minimum dwell time increases to 20 ms 9 Maintenance and Warranty Information Adjustments and Calibration TO maintain optimum measurement performance the 835 3 should be calibrated every 24 months It is recommended that the 835 3 be returned to BNC or to an authorized calibration facility For more information please contact our Customer Service Department at 415 453 9955 or info berkeleynucleonics com Repair The signal generator contains no user serviceable parts Repair or calibration of the Signal generator requires specialised test equipment and must be performed by BNC or its authorized repair specialists 40 Safety FCC notice This equipment has been tested and found to comply with the limits for a Class A device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area may cause harmful interference in which case the user will be required to correct the interference at his or her own expense C E notice The 835 3 Signal Generator meets the intent of the EMC directive 89 336 EEC and have been designed to EN61326 Class A E
36. t of the internal 100 MHz reference frequency which has a nominal output level greater than 8 dBm and an output impedance of 50 ohm 9 FUNCT OUT connector Female BNC connector is used as a multiple purpose output It can be programmed as trigger output as video output during pulse modulation and as output for the low frequency function generator standard on instruments with serial no above xx00100 2 Getting Started System Requirements To ensure that your Model 835 3 signal generator operates correctly with the graphical user interface you must have a computer with at least the minimum system requirements to run one of the supported operating systems Operating system Windows 2000 SP4 XP SP2 or Vista 32 bit versions only Ethernet Port 10 100 1000M LAN Unpacking the Model 835 3 Remove the 835 3 materials from the shipping containers Save the containers for future use The standard 835 3 package includes 1 Synthesized Signal Generator 1 An Ethernet Cable 1 Universal DC power adapter 1 835 3 Software amp Manual CD 1 835 3 Get Started Manual Initial Inspection Inspect the shipping container s for damage If container is damaged retain it until contents of the shipment have been verified against the packing list and instruments have been inspected for mechanical and electrical operation Starting the 835 3 This section describes installation instructions and 835 3 verification tests Applying Power
37. xed IP the connection will fail After a short time the instrument will detect that no DHCP server is present and assign itself a default IP number 169 254 5 5 The instrument now must show 169 254 5 5 on the display Should the IP not appear after more than 30 seconds leave the LAN cable in place and turn the instrument off and then on again and retry Installing the 835 3 Remote Client BNC s graphical user interface provides an intuitive control of the 835 3 It runs under any Windows 2000 XP or Vista operating system with minimum requirements The DLL is embedded in the GUI application and requires NET to be installed To install the GUI on the computer insert the Software and Manual CD into the CD DVD drive If the setup doesn t start automatically double click on the setup exe to run the auto installer The self extracting setup provides easy installation and de installation of the software The setup program guides you in a few steps though the installation process In case the NET Framework is not installed on the current Windows operating system the setup procedure automatically will assist you to install the required version For this you will need an internet connection Troubleshooting the LAN Interconnection Software does not install properly e Make sure your installation CD is not damaged e When Microsoft NET Framework is not installed make sure that your PC is to the internet connected during installation
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