Home

2013 - Berkeley Nucleonics Corporation

1. Command Parameters Unit default SYSTem COMMunicate LAN CONFig DHCP MANual AUTO DHCP SYSTem COMMunicate LAN DEFaults V0 5 0 SYSTem COMMunicate LAN DHCP TI Meout N A 30 sec SYSTem COMMunicate LAN GATeway lt ipstring gt 0 0 0 0 SYSTem COMMunicate LAN IP lt ipstring gt SYSTem COMMunicate LAN RESTart SYSTem COMMunicate LAN SUBNet lt ipstring gt 255 255 255 0 SYSTem COMMunicate SOCKet ECHO ON OFF 1 0 OFF LAN CONFig SYSTem COMMunicate LAN CONFig DHCP MANual AUTO SYSTem COMMunicate LAN CONFig This command sets the signal generator s internet protocol IP address MANual The user assigns an IP address to the signal generator DHCP The network assigns an IP address to the signal generator If DHCP fails manual configuration will be used AUTO The network assigns an IP address to the signal generator with a fallback to Auto IP if DHCP fails If both DHCP and Auto IP fail manual configuration will be used LAN DEFaults SYSTem COMMunicate LAN DEFaults This command restores the instrument s LAN settings to their factory default values LAN DESCription not implemented SYSTem COMMunicate LAN DESCription lt string gt SYSTem COMMunicate LAN DESCription This command defines the instrument s web description The query returns the current saved setting LAN DHCP TI Meout not implemented SYSTem COMMunicate LAN DHCP TI Meout 130 60 90 120s
2. Command Parameters Unit Remark default ABORt V0 5 0 ABORt ABORt This command causes the List or Step sweep in progress to abort Even if INIT CONT ALL is set to ON the sweep will not immediately re initiate Berkeley Nucleonics 4 SCPI Commands 18 Model 845 835 6 Programmer s Manual V1 3 2013 DISPlay Subsystem The DISPlay subsystem controls the display of the front panel data display Command Parameters Unit Remark default DISPlay WI NDow TEXT STATe ON OFF 1 0 V0 5 0 DISPlay REMote ONJOFF 1 0 V0 5 0 DI SPlay WI NDow TEST ON OFF 1 0 DISPlay WI NDow TEXT STATe ONJOFF 1 0 DISPlay WI NDow TEXT STATe Turns on off the parameter display of the BNC UNIT front panel data display DI SPlay REMote ON OFF 1 0 DISPlay REMote ON OFF 1 0 DISPlay REMote Turns on off the display update of the BNC UNIT front panel data display N Berkeley Nucleonics 4 SCPI Commands N Model 845 835 6 Programmer s Manual V1 3 2013 I NI Tiate Subsystem The INITiate subsystem controls the state of the BNC UNIT trigger system The subsystem commands and parameters are described below The INITiate commands along with the ABORt and TRIGger commands comprise the Trigger Group of commands I NI Tiate I MMediate Sets BNC UNIT trigger to the armed state I NI Tiate CONTinuous ON OFF 1 0 Continuously rearms the BNC U
3. RST The preset value is 0 ATTenuation SOURce POWer ATTenuation lt value gt SOURce POWer ATTenuation Devices with option PE only This command sets the power range extension attenuator This command will also turn off automatic attenuation setting Refer to SOURce POWer ATTenuation AUTO OFF for details Attenuator input RF power shall be 30 10 dBm e g using a SOURce POWer ATTenuation value of 50 dB the output RF power range is 80 40 dBm RST The preset value is 0 ATTenuation AUTO SOURce POWer ATTenuation AUTO ONJOFF 1 O SOURce POWer ATTenuation AUTO Devices with option PE only This command turns the power range extension on or off Turning it off allows fast power sweeps for devices featuring an extended output power range RST The preset value is 0 ATTenuation LI ST SOURce POWer ATTenuation AUTO Devices with option PE only This query returns a comma separated list of available attenuation settings These can be set using the SOURce POWer ATTenuation command Available settings are 0 35 70 dB for option PE2A 0 10 20 70 dB for option PE3 0 10 20 110 dB for option PE4 0 35 70 105 dB for option PE5 0 Berkeley Nucleonics 4 SCPI Commands 26 Model 845 835 6 Programmer s Manual V1 3 2013 SOURce CORRection Subsystem Command Parameters Unit default SOURce CORRection FLATness PAIR lt value
4. unit SOURce POWer LEVel IMMediate AMPLitude This command sets the RF output power MODE SOURce POWer MODE CW LIST SWEep SOURce POWer MODE This command sets the signal generator power mode to fixed or swept FIX This choice stops a power sweep allowing the signal generator to operate at a fixed power level Refer to LEVel MMediate AMPLitude command for setting the output power level LIST or SWEep This choice selects the swept power mode If sweep triggering is set to immediate along with continuous sweep mode executing the command starts the LIST or STEP power sweep STARt SOURce POWer STARt value unit SOURce POWer STARt This command sets the first amplitude point in a step sweep Range STOP SOURce POWer STOP value unit SOURce POWer STOP This command sets the last amplitude point in a step sweep Range STEP SOURce POWer STEP LI Near This query returns the step size in dB for a linear step sweep ALC SOURce POWer ALC ON OFF 1 0 0 Berkeley Nucleonics 4 SCPI Commands 25 Model 845 835 6 Programmer s Manual V1 3 2013 SOURce POWer ALC This command turns the automatic power level control on and off RST The preset value is 1 ALC HOLD SOURce POWer ALC HOLD ON OFF 1 0 SOURce POWer ALC Devices with option PE only This command sets the automatic level control into hold mode The amplitude level control loop is open
5. SOURce PM SOURce EXTernal INTernal EXT SOURce PM STATe ONJOFF 1 O OFF PM DEViation SOURce PM SENSitivity value SOURce PM SENSitivity This command sets the phase modulation deviation This setting will be used if PM SOURce is set to LFGenerator The variable value is expressed in units of radians RST 2 4048 PM SENSitivity SOURce FM SENSitivity lt value gt SOURce FM SENSitivity This command sets the phase modulation deviation per one volt peak amplitude signal input This setting will be used if PM SOURce is set to EXTernal The variable value is expressed in units of radians per Volt RST 2 4048 PM I NTernal FREQuency SOURce PM INTernal FREQuency value SOURce PM I NTernal FREQuency This command sets the phase modulation rate in Hz This setting will be used if PM SOURce is set to INTernal The variable value is expressed in Hertz RST 400 PM SOURce SOURce PM SOURce EXTernal INTernal SOURce PM SOURce This command selects the PM modulation signal source If INTernal is selected an internal modulation source is applied If EXTernal is selected the device s bM input at the rear panel is activated RST EXT PM STATe SOURce PM STATe ON OFF 1 0 SOURce PM STATe This command turns the phase modulation on or off RST OFF 00 Berkeley Nucleonics 4 SCPI Commands 40 Model 845 835 6 Programmer s Manual V1 3 2013 SOURce PULM
6. Subsystem Pulse Modulation This additional functionality provides pulse modulation of the RF output signal delivered to the load by an internal or external modulation signal The INTernal selection accesses the internally generated modulation input while EXTernal selects the external pulse rear panel connector input Command Parameters Unit default SOURce PULM POLarity NORMal INVerted NORMal SOURce PULM I NTernal FREQuency frequency Hz SOURce PULM I NTernal PERiod period S SOURce PULM I NTernal PWI Dth num S SOURce PULM SOURce INTernal EXTernal Bl INT TStream SOURce PULM STATe ON OFF 1 0 OFF SOURce PULM MODE FIXed LIST FIXed SOURce PULM BI TStream hex data 5h SOURce PULM BI TStream BITS value 4 SOURce PULM BITStream DIRection MSBFirst LSBFirst MSBFirst SOURce PULM BITStream RATE lt frequency gt Hz SOURce PULM BITStream STARtbit lt value gt 0 SOURce PULM BI TStream TI ME time S PULM POLarity SOURce PULM POLarity NORMal INVerted SOURce PULM POLarity This command selects the polarity of the pulse modulation regardless if the internal or external modulation source is used RST Normal PULM I NTernal FREQuency SOURce PULM INTernal FREQuency frequency SOURce PULM I NTernal FREQuency This command sets the pulse rate for the internally generated square wave using the variable frequency
7. and negative filters True allows an event to be reported anytime the condition changes Transition filters are read write Transition filters are unaffected by queries or CLS clear status and RST commands The command STATus PRESet sets all negative transition filters to all 0 s and sets all positive transition filters to all 1 s Event Register The event register latches transition events from the condition register as specified by the transition filter Bits in the event register are latched and once set they remain set until cleared by a query or a CLS command Event registers are read only Enable Register The enable register specifies the bits in the event register that can produce a summary bit The BNC UNIT logically ANDs corresponding bits in the event and enable registers and ORs all the resulting bits to obtain a summary bit Summary bits are recorded in the Summary Status Byte Enable registers are read write Querying an enable register does not affect it The command STATus PRESet sets the Operation Status Enable register and the Questionable Status Enable register to all 0 s Status Group Reporting The state of certain BNC UNIT hardware and operational events and conditions can be determined by programming the status system Three lower status groups provide status information to the Summary Status Byte group The Summary Status Byte group is used to determine the general nature of an event or condition and the other statu
8. gt lt value gt V0 5 0 SOURce CORRection FLATness POI Nts V0 5 0 SOURce CORRection FLATness PRESet V0 5 0 SOURce CORRection STATe ON OFF 1 0 V0 5 0 MEMory FILE CORRection FLATness LOAD lt file name gt V0 5 0 MEMory FI LE CORRection FLATness STORe file name V0 5 0 MEMory FI LE CORRection FLATness READ file name V0 5 0 MEMory FI LE CORRection FLATness WRITe file name V0 5 0 FLATness PAI R SOURce CORRection FLATness PAIR lt freq gt lt freq suffix gt corr corr suffix SOURce CORRection FLATness PAIR point This command form adds or changes a frequency and amplitude correction pair The maximum number of points that can be entered is 3201 The query form returns the frequency and amplitude correction pair at the given point Range Frequency range varies and is model dependent Please refer to the instrument s Data Sheet FLATness POI Nts SOURce CORRection FLATness POI Nts This query returns the number of points in the user flatness correction file FLATness PRESet CAUTI ON The current correction data will be overwritten once this command is executed Save the current data if needed Refer to FLATness STORe command for storing user flatness files SOURce CORRection FLATness PRESet This command presets the user flatness correction to a factory defined setting that consists of one point STATe SOURce CORRection STATe ON OFF 1 0 SOURce COR
9. link setup The IP address device name is part of the visa resource string used by the programs for identification and control of the instrument The visa resource string has the form TCPI P ipaddr instO l NSTR ipaddr has to be replaced by the IP address or the computer name of the instrument For instance if the instrument has the IP address 192 168 1 50 7CP P 192 168 1 50 inst0 NSTR is the valid resource name Specification of instO in the resource name is optional In this example also Berkeley Nucleonics 2 Programming the MODEL 845 835 6 5 Model 845 835 6 Programmer s Manual V1 3 2013 TCPIP 192 168 1 50 NSTR is therefore a valid resource name TCPI P designates the network protocol used and INSTR indicates that the VXI 11 protocol is used If several instruments are connected to the network each instrument has its own IP address and associated resource name The controller identifies these instruments by means of the resource name Using Sockets LAN Sockets LAN is a method used to communicate with the signal generator over the LAN interface using the Transmission Control Protocol I nternet 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 bidirectional communication with a network computer can be esta
10. played after triggering a list sweep If set to INFinite the list sweep will be repeated until a SOURce FREQuency MODE or SOURce POWer MODE command is issued RST INFinite Range NFinite or 2 65535 LIST DI Rection SOURce LIST DIRection UP DOWN RANDom SOURce LI ST DI Rection This command sets the direction of a list or step sweep UP This choice enables a sweep in an ascending order first to last point for a list sweep start to stop for a step sweep DOWN This choice reverses the direction of the sweep RST UP LI ST DWELI SOURce LI ST DWELI value 1 value SOURce LI ST DWELI POINts This command sets the dwell time for the current list sweep points Dwell time is used when IMMediate is the trigger source The dwell time is the amount of time the sweep is guaranteed to pause after setting the frequency and or power for the current point The setting enabled by this command is not affected by signal generator power on preset or RST The variable value is expressed in units of seconds LIST DELay SOURce LIST DELay lt value gt lt value gt SOURce LI ST DELay POI Nts 0 Berkeley Nucleonics 4 SCPI Commands 307 Model 845 835 6 Programmer s Manual V1 3 2013 This command sets the off time for the current list sweep points Off time is used when IMMediate is the trigger source The off time is the amount of time the output is guaranteed to be blanked after set
11. 845 835 6 Programmer s Manual V1 3 2013 SYSTem Subsystem Command Parameters Unit Remark default SYSTem ERRor NEXT SYSTem ERRor ALL SYSTem PRESet V0 5 0 SYSTem VERSion V0 5 0 SYSTem LOCK V0 5 0 SYSTem LOCK RELease V0 5 0 ERRor SYSTem ERRor NEXT Return Parameters Integer error number Query command is a request for the next entry in the instrument s error queue Error messages in the queue contain an integer in the range 32768 32768 denoting an error code and associated descriptive text ERRor ALL SYSTem ERRor ALL Return Parameters List of integer error number Query command is a request for the all entries in the instrument s error queue Error messages in the queue contain an integer in the range 32768 32768 denoting an error code and associated descriptive text This query clears the instrument s error queue PRESet SYSTem PRESet Resets most signal generator functions to factory defined conditions This command is similar to the RST command VERSion SYSTem VERSion Returns the SCPI version number that the instrument software complies with 1999 0 LOCK SYSTem LOCK Locks disables front panel control LOCK RELease SYSTem LOCK RELease Unlocks enables front panel control 0 Berkeley Nucleonics 4 SCPI Commands 507 Model 845 835 6 Programmer s Manual V1 3 2013 SYSTem COMMunicate Subsystem
12. B I nterface Connection and Setup This documentation is available in an updated version of this programmer s manual Using SCPI for BNC UNIT 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 IEEE 488 2 Standard Codes and Formats It requires conformance to IEEE 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 USB TMC GPIB RS 232 VXIbus or LAN networks Please see the chapter 4 for detailed description of supported SCPI commands Berkeley Nucleonics 2 Programming the MODEL 845 835 6 8 Model 845 835 6 Programmer s Manual V1 3 2013 3 IEEE 488 Interface Commands I EEE Mandated Commands The required common commands are I EEE 488 2 mandated commands that are defined in the EEE 488 2 standard and must be implemented by all SCPI compatible instruments These commands are identified by the asterisk at the beginning of the command keyword These commands are used to control instrument status registers status reporting synchron
13. EriDHOR PP 18 E eM 18 AE EI ET ET N BEP REL e EE EHE VERE 19 ILICE 20 SOURCE FREQUCNCY Subsystem sae Gie in a a RR RE Y PERRA EE FE MEER RYE REFER FRE se A REG Pod 22 SOURCE PHASE SubsVstef ui i rer AE rr RR LR Fe EAR FR RR RE RE UE ee RR ER LE 24 SOURCE PO Wer SUDsSVstelri i ieri DE cts RR d e cuta ua ER ERE T DU RF We ARR cM AE ER RE RE ge de dS 25 SOURce CORRection Subsystem sse nnne nnne ee Ge ee asa Re aa sensa ana ee nant 27 SOURce ROSCillator Subsystem urrira rinrin nnn reat enira na ee ee nana nnn 29 SOURCE LIST Subsystem ui e name esken cesi Rd a ak aen eu D ak c RR rl da 30 ISOURcel LFO tput Subsystem ss ee ees Ns ia vor oi HEES Ge d ax rg Fa Ma RA o ku vh pi P ee p ds 33 SQURce 5SWEep S bsystem iR le PARE V EAR REA ERE RR ERE EAE ERR RR RE LER kes 35 SOURce AM Subsystem Amplitude Modulation sssss eene nnn 37 SOURce FM Subsystem Frequency Modulation eene nnne nnns 38 SOURce PM Subsystem Phase Modulation iiir nnn nn 40 SOURce PULM Subsystem Pulse Modulation seen nnne nnn nnn 41 SOURCETILS Subsystem ii teet f sua oan poe RR a a obti ca XR Fea Ta MR ERR ELE EM p SV RARE FERRE os 43 SQURce VOR eu OO rd a ER niende 44 TFRIGGEr OM EO EE EE EE M 45 STATUS SUDSYSLOM So aseo seti utro OR ee 48 SYSTEM SUDSYSLEM cu di Dre ie aes petted ected peau ek edo ew ceded Slate cone 50 SYSTem COMMunicate Subsystem ss
14. LFOutput STATe ONJOFF 1 0 OFF SOURce LFOutput SHAPe SINE TRI angle SQUare SINE SOURce LFOutput SOURce LFGenerator PULM TRI Gger LFG LFOutput AMPLitude SOURce LFOutput AMPLitude value SOURce LFOutput AMPLitude This command sets the low frequency generator amplitude This setting does only take effect if LFOutput SOURce is set to LFGenerator and LFOutput SHAPe is either set to SINE or TRlangle Using any other setting the output amplitude is fixed 2 5 V The variable value is expressed in units of Volt Range 0 2 5 RST 1 LFOutput FREQuency SOURce LFOutput FREQuency value SOURce LFOutput FREQuency This command sets the low frequency generator frequency This setting does only take effect if LFOutput SOURce is set to LFGenerator The variable value is expressed in units of Hertz Range 10 5000000 RST 400 LFOutput STATe SOURce LFOutput STATe ON OFF 1 0 SOURce LFOutput STATe This command sets the function output low frequency generator state RST OFF LFOutput SHAPe SOURce LFOutput SHAPe SI NE TRIangle SQUare SOURce LFOutput SHAPe This command sets the low frequency generator waveform This setting does only take effect if LFOutput SOURCe is set to LFGenerator SINE Sine wave output amplitude is selectable by the LFOutput AMPLitude setting TRlangle Triangle wave output amplitude is selectable by the LFOutput AMPLitude setting SOUare Square wave o
15. Model 845 835 6 Programmer s Manual V1 31 2013 BNC Version 1 31 Jan 2013 Copyright This manual is copyright by Berkeley Nucleonics and all rights are reserved No portion of this document may be reproduced copied transmitted transcribed stored is a retrieval system or translated in any form or by any means Electronic mechanical magnetic optical chemical manual or otherwise without written permission of Berkeley Nucleonics Berkeley Nucleonics and the Berkeley Nucleonics logo are internationally registered trademarks of Berkeley Nucleonics Berkeley Nucleonics acknowledges the following product names as trademarks of their respective owners Microsoft Windows LabVIEW MATLAB Disclaimer Berkeley Nucleonics makes no representation or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability for any particular purpose Berkeley Nucleonics reserves the right to revise this publication and to make changes from time to time in the content thereof without obligation of Berkeley Nucleonics to notify any person of such revision or change Berkeley Nucleonics Introduction 1 Model 845 835 6 Programmer s Manual V1 31 2013 Contents 1 Bier eunte E 3 2 Programming the MODEL 845 835 6 ee ee ee eene nennen nnne nnns nnn nnns 4 LAWN 4 Ethernet Interface Connection and SeFUP iii ie
16. NIT trigger system after completion of a triggered sweep Command Parameters Unit Remark default INI Tiate IMMediate ON INI Tiate CONTinuous ON OFF 1 0 OFF 0 Berkeley Nucleonics 4 SCPI Commands 207 Model 845 835 6 Programmer s Manual V1 3 2013 OUTPut Subsystem Command Parameters Unit Remark default OUTPut STATe ON OFF 1 0 OFF OUTPut BLANking ON OFF 1 0 OFF V0 5 0 STATe ON OFF 1 0 OUTPut STATe ON OFF 1 0 Turns BNC UNIT RF output power on off BLANking STATe ON OFF 1 0 OUTPut BLANking STATe ON OFF 1 0 OUTPut BLANking STATe ON causes the RF output to be turned off blanked during frequency changes OFF leaves RF output turned on unblanked 0 Berkeley Nucleonics 4 SCPI Commands 21 Model 845 835 6 Programmer s Manual V1 3 2013 SOURce FREQuency Subsystem Command Unit default Remark Parameters SOURce FREQuency FIXed CW fmin to fmax Hz SOURce FREQuency STARt FIX CW SWEep LIST fmin to fmax FI Xed Hz SOURce FREQuency MODE SOURce FREQuency STOP fmin to fmax Hz SOURce FREQuency STEP LI Near Hz SOURce FREQuency STEP LOGarithmic FREQuency CW SOURce FREQuency CW value unit SOURce FREQuency CW This command sets the signal generator output frequency for the CW frequency mode RST 100 MHz Range
17. Please refer to the Data Sheet FREQuency MODE SOURce FREQuency MODE FI X CW SWEep LIST SOURce FREQuency MODE This command sets the frequency mode of the signal generator to CW or swept FIX CW Stops a frequency sweep SWEep or LIST This choice selects the swept frequency mode If sweep triggering is set to immediate along with continuous sweep mode executing the command starts the LIST or SWEep frequency sweep In SWEep mode frequency will be determined by programmed values for the STARt and STOP FREQuency subsystem commands In LIST mode frequency is determined by programmed values for LIST FREQuency FREQuency STARt SOURce FREQuency STARt value unit SOURce FREQuency STARt This command sets the first frequency point in a step sweep RST The preset value is 1 GHz Please refer to the Data Sheet Range Please refer to the Data Sheet FREQuency STOP SOURce FREQuency STOP value unit SOURce FREQuency STOP This command sets the last frequency point in a step sweep RST The preset value is 2 GHz Range Please refer to the Data Sheet SOURce FREQuency STEP SOURce FREQuency STEP LI Near This query returns the step sizein Hz for a linear step sweep SOURce FREQuency STEP LOGarithmic SOURce FREQuency STEP LOGarithmic 0 Berkeley Nucleonics 4 SCPI Commands 22 Model 845 835 6 Programmer s Manual V1 3 2013 This query returns the step size step
18. RST 400 Hz Range INT 0 1 Hz 100 kHz EXT 0 1 Hz 10 MHz PULM I NTernal PERiod SOURce PULM INTernal PERiod period SOURce PULM INTernal PERiod This command sets the pulse period for the internally generated pulse modulation using the variables lt value gt If the entered value for the pulse period is equal to or less than the value for the pulse width the pulse width changes to a value that is less than the pulse period RST 2 5 ms Range 200 ns 10s PULM I NTernal PWI Dth SOURce PULM INTernal PWIDth num 0 Berkeley Nucleonics 4 SCPI Commands 41 Model 845 835 6 Programmer s Manual V1 3 2013 SOURce PULM I NTernal PWI Dth This command sets the pulse width for the internally generated pulse signal This command sets the pulse width for the internally generated pulse modulation using the variable num If the entered value for the pulse width is equal to or greater than the value for the pulse period the pulse width changes to a value that is less than the pulse period RST 1 25 ms Range 50 nS to PERiod PULM SOURce SOURce PULM SOURce INTernal EXTernal BI TStream SOURce PULM SOURce If set RST INTernal PULM STATe SOURce PULM STATe ON OFF 1 0 SOURce PULM STATe This command enables or disables pulse modulation for the selected path RSTO PULM MODE SOURce PULM MODE Fl Xed LIST SOURce PULM MODE This command sets the modulation mode Wit
19. Rection STATe This command enables or disables the user flatness corrections RST 0 FLATness LOAD MEMory FILE CORRection FLATness LOAD lt file name gt This command loads a user flatness correction file The lt file name gt variable is the name of the file located in the directory USERFLAT The directory path is implied in the command and need not be specified in the variable name FLATness STORe MEMory FILE CORRection FLATness STORe lt file name gt 0 Berkeley Nucleonics 4 SCPI Commands 27 Model 845 835 6 Programmer s Manual V1 3 2013 This command stores the current user flatness correction data to a file named by the FLATness STORe command CORRection FLATness STORe command The directory path is implied in the command and need not be specified in the lt file name gt variable 0 Berkeley Nucleonics 4 SCPI Commands 28 Model 845 835 6 Programmer s Manual V1 3 2013 SOURce ROSCillator Subsystem Command Parameters Unit default SOURce ROSCillator EXTernal FREQuency lt val gt 10 MHz SOURce ROSCillator LOCKed SOURce ROSCillator OUTPut STATe ON OFF 1 0 OFF SOURce ROSCillator SOURce INTernal INT EXTernal SOURce ROSCillator NTernal TUNing val V0 5 0 EXTernal FREQuency SOURce ROSCillator EXTernal FREQuency val SOURce ROSCillator EXTernal FREQuency This command conveys the expected reference freque
20. SOURce TRI Gger SEQuence SOURce IMMediate KEY EXTernal BUS TRI Gger SEQuence SOURce This command sets the trigger source IMMediate No waiting for a trigger event occurrs KEY This choice enables manual triggering by pressing the front panel RFon off EXTernal This choice enables the triggering of a sweep event by an externally applied signal at the MOD IN connector BUS This choice enables triggering over the LAN using the TRG or GET commands RST IMM TRI Gger SEQuence DELay TRI Gger SEQuence DELay value TRI Gger SEQuence DELay This command sets the amount of time to delay the BNC UNIT response to an external trigger The delay is a path time delay between when the BNC UNIT receives the trigger and when it responds to the trigger The delay does not occur until you turn it on You can set the delay value either before or after turning it on TRI Gger SEQuence SLOPe TRI Gger SEQuence SLOPe POSitive NEGative TRI Gger SEQuence EXTernal SLOPe This command sets the polarity for an external trigger signal while using the continuous single triggering mode The POSitive and NEGative selections correspond to the high positive and low negative states of the external trigger signal For example when you select POSitive the waveform responds plays during the high state of the trigger signal When the BNC UNIT receives multiple trigger occurrences when only one is required the signal generator uses t
21. T POWer W V DBM DB DBM UNI T POWer UNIT POWer W V DBM DB RST DBM UNIT FREQuency UNIT FREQuency HZ MHZ GHZ RST HZ 0 Berkeley Nucleonics 4 SCPI Commands 54 __ Model 845 835 6 Programmer s Manual V1 3 2013 Company Details Address Berkeley Nucleonics 2955 Kerner Blvd San Rafael CA 94901 Phone 415 453 9955 Fax 415 453 9956 Email info berkeleynucleonics com Web site www BerkeleyNucleonics com N IE SIN Company Details 55
22. T us OPERation CONDition This query returns the contents of the operation status condition register OPERation ENABle STAT us OPERation ENABle This command sets the enable mask of the operation status event register OPERation PTR STATus OPERation PTR This command sets the positive transition filter of the operation status event register OPERation NTR STATus OPERation NTR This command sets the negative transition filter of the operation status event register PRESet STAT us PRESet Disables all status events clears all negative transition filters and sets all positive transition filters QUEStionable STATus QUEStionable EVENt This query returns the contents of the questionable status event register and clears it QUEStionable CONDition Berkeley Nucleonics 4 SCPI Commands 48 Model 845 835 6 Programmer s Manual V1 3 2013 STAT us QUEStionable CONDition This query returns the contents of the questionable status condition register QUEStionable ENABle STATus QUEStionable ENABle This command sets the enable mask of the questionable status event register QUEStionable PTR STATus QUEStionable PTR This command sets the positive transition filter of the questionable status event register QUEStionable NTR STATus QUEStionable NTR This command sets the negative transition filter of the questionable status event register 0 Berkeley Nucleonics 4 SCPI Commands 49 Model
23. TCP IP data from one network to the other A single LAN that is not connected to other LANs requires a default gateway setting of 0 0 0 0 If you have a gateway then the default gateway would be set to the appropriate value of your gateway MAC Address A MAC address is a unique 48 bit value that identifies a network interface card to the rest of the network Every network card has a unique MAC address permanently stored into its memory Interface between the signal generator and other devices on the network is via a category five CAT 5 interface cable connected to a network This cable uses four twisted pairs of copper insulators terminated into an RJ45 connector CAT 5 cabling is capable of supporting frequencies up to 100 MHz and data transfer speeds up to 1 Gbps which accommodates 1000Base T 100Base T and 10Base T networks The instrument can be remotely programmed using the VXI 11 protocol A VISA I O library like NI VISA is used on the server side to facilitate the communications A VISA installation on the controller is a prerequisite for remote control over LAN interface VISA is a standardized software interface library providing input and output functions to communicate with instruments For more information about VISA refer to the VISA library supplier s documentation The SCPI command set listed in the BNC 845 835 6 programmer s manual applies to LAN programming as well Only the IP address or the device name is required for
24. TMC upgrades the physical layer from GPIB to USB while maintaining software compatibility with existing software such as instrument drivers and any application that uses VISA This is also what the VXI 11 protocol provides for TCP IP Berkeley Nucleonics 2 Programming the MODEL 845 835 6 7 Model 845 835 6 Programmer s Manual V1 3 2013 NI VISA 3 0 or later allows you to communicate as a controller to BNC UNIT devices NI VISA is configured to detect USBTMC compliant instruments such as the BNC UNIT To use such a device plug it in and Windows should detect the new hardware and launch the New Hardware Wizard Instruct the wizard to search for the driver which in this case is NI VISA If NI VISA is properly installed the device will be installed as a USB Test amp Measurement Class Device Open Measurement amp Automation Explorer MAX The new device will appear in MAX under Device and Interfaces USB Devices You can then use this resource name as you would use any GPIB resource USB TMC I nterface Connection and Setup using Berkeley Nucleonics API Berkeley Nucleonics API programming interface supports direct communication to BNC UNIT using Berkeley Nucleonics s proprietary DLL driver libraries The library allows setup a communication channel though USB LAN or GPIB from any programming environment Please contact Berkeley Nucleonics for more detailed documentation programming samples and updates on the DLL library GPI
25. ak amplitude signal input This setting will be used if FM SOURce is set to EXTernal The variable value is expressed in units of Hertz per Volt RST 1000 FM INT FREQuency SOURce FM I NT FREQuency value SOURce FM I NT FREQuency This command sets the frequency modulation rate in Hz This setting will be used if FM SOURce is set to INTernal The variable lt value gt is expressed in Hertz RST 400 FM SOURce SOURce FM SOURce EXTernal INTernal SOURce FM SOURce This command selects the FM modulation signal source If INTernal is selected an internal modulation source is applied If EXTernal is selected the device s M input at the rear panel is activated RST EXT FM STATe SOURce FM STATe ON OFF 1 0 SOURce FM STATe This command turns the frequency modulation on or off RST OFF FM COUPling SOURce FM COUPling DC AC 0 Berkeley Nucleonics 4 SCPI Commands 38 Model 845 835 6 Programmer s Manual V1 3 2013 SOURce FM COUPIing This command selects to signal coupling for the external FM modulation RST AC N Berkeley Nucleonics 4 SCPI Commands 39 Model 845 835 6 Programmer s Manual V1 3 2013 SOURce PM Subsystem Phase Modulation Command Parameters Unit default SOURce PM DEViation lt value gt 2 4048 rad SOURce JPM SENSitivity lt value gt 2 4048 rad V SOURce JPM INTernal FREQuency lt value gt 400 Hz
26. all tests passed 1 This shows that one or more tests failed WAI The Wait to Continue WAI command causes the signal generator to wait until all pending commands are completed before executing any other commands Berkeley Nucleonics 3 I EEE 488 Interface Commands 11 Model 845 835 6 Programmer s Manual V1 3 2013 4 SCPI Commands This chapter provides an introduction to SCPI programming that includes descriptions of the command types hierarchical command structure data parameters and notational conventions Information on BNC UNIT status system and trigger system programming is also provided Introduction Standard Commands for Programmable Instruments SCPI is the new instrument command language for controlling instruments that goes beyond EEE 488 2 to address a wide variety of instrument functions in a standard manner SCPI promotes consistency from the remote programming standpoint between instruments of the same class and between instruments with the same functional capability For a given measurement function such as frequency or voltage SCPI defines the specific command set that is available for that function Thus two oscilloscopes made by different manufacturers could be used to make frequency measurements in the same way It is also possible for a SCPI counter to make a frequency measurement using the same commands as an oscilloscope SCPI commands are easy to learn self explanatory and account for both novi
27. atus Register clears it Berkeley Nucleonics 3 I EEE 488 Interface Commands 9 Model 845 835 6 Programmer s Manual V1 3 2013 Remarks The Register is not affected by signal generator preset or RST However cycling the signal generator power will reset this register to zero IDN The Identification IDN query outputs an identifying string The response will show the following information company name model number serial number firmware revision OPC The Operation Complete OPC command sets bit 0 in the Standard Event Status Register when all pending operations have finished The Operation Complete command causes the device to set the operation complete bit bit 0 in the Standard Event Status Register when all pending operations have been finished OPC The Operation Complete OPC query returns the ASCII character 1 in the Standard Event Status Register when all pending operations have finished This query stops any new commands from being processed until the current processing is complete This command blocks the communication until a operations are complete i e the timeout setting should be longer than the longest sweep OPT The options OPT query returns a comma separated list of all of the instrument options currently installed on the signal generator RCL reg The Recall RCL command recalls the state from the specified memory register lt reg gt RST affected The Reset RST co
28. blished 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 socket 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 once the socket connection is established in your program Socket connection is available on port 18 Using and Configuring VXI 11 VI SA 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 configuring the VXI 11 interface The program is used to configure the LAN client Once the compute
29. ce and expert programmer s usage Once familiar with the organization and structure of SCPI considerable efficiency gains can be achieved during control program development independent of the control program language selected A key to consistent programming is the reduction of multiple ways to control similar instrument functions The philosophy of SCPI is for the same instrument functions to be controlled by the same SCPI commands To simplify learning SCPI uses industry standard names and terms that are manufacturer and customer supported The advantage of SCPI for the ATE system programmer is reducing the time learning how to program new SCPI instruments after programming their first SCPI instrument Programmers who use programming languages such as BASIC C FORTRAN etc to send instrument commands to instruments will benefit from SCPI Also programmers who implement instrument device drivers for ATE program generators and or software instrument front panels will benefit by SCPI s advantages SCPI defines instrument commands parameters data and status It is not an application package programming language or software intended for instrument front panel control SCPI is designed to be layered on top of the hardware independent portion of EEE 488 2 SCPI Command Types SCPI commands which are also referred to as SCPI instructions are messages to the instrument to perform specific tasks The BNC UNIT command set includes 0 Ber
30. command for setting the proper mode If the point selected is beyond the length of the longest enabled list then the point will be set to the maximum possible point and an error will be generated Range 1 3501 LIST MODE SOURce LI ST MODE AUTO MANual SOURce LI ST MODE This command sets the operating mode for the current list or step sweep AUTO This choice enables the selected sweep type to perform a sweep of all points MANual This choice enables you to select a single sweep point The selected point controls the frequency and or amplitude according to the sweep type Refer to LIST MANual command for selecting a sweep point RST AUTO LI ST POWer SOURce LI ST POWer value 1 value SOURce LIST POWer This command sets the amplitude for the current list sweep points 0 Berkeley Nucleonics 4 SCPI Commands 31 Model 845 835 6 Programmer s Manual V1 3 2013 LI ST POWer POI Nts SOURce LIST POWer POINts This command queries the number of power points in the current list sweep file LI ST PROGgress SOURce LI ST PROGgress This query returns the progress of an active list sweep 0 0 1 0 0 Berkeley Nucleonics 4 SCPI Commands 32 Model 845 835 6 Programmer s Manual V1 3 2013 SOURce LFOutput Subsystem Command Parameters Unit default SOURce LFOutput AMPLitude lt value gt 1V SOURce LFOutput FREQuency value 400 Hz SOURce
31. ec SYSTem COMMunicate LAN DHCP TI Meout This command enables the user to change the maximum length of time that the instrument will spend trying to acquire an IP address using DHCP If the LAN Config Type is set to Auto then the Auto IP protocol will be used as a fall back when time out does occur The DHCP timeout value is stored in the same non volatile ram as the other LAN configurations The query returns the current setting not the saved setting Default 30 Seconds LAN DOMain not implemented SYSTem COMMunicate LAN DOMain string SYSTem COMMunicate LAN DOMain This command defines the domain name of the signal generator s DNS server This entry defines the DNS server for the signal generator LAN connection The query returns the current setting not the saved setting N Berkeley Nucleonics 4 SCPI Commands 51 Model 845 835 6 Programmer s Manual V1 3 2013 LAN DNS DYNamic not implemented SYSTem COMMunicate LAN DNS DYNamic ON OFF 1 0 SYSTem COMMunicate LAN DNS DY Namic This command turns dynamic Domain Name System DNS on off The query returns the current setting not the saved setting LAN DNS OVERride not implemented SYSTem COMMunicate LAN DNS OVERride ON OFF 1 0 SYSTem COMMunicate LAN DNS OVERride This command enables you to override the DNS server that is returned by the DHCP server The LAN configuration type must be set to Auto or DHCP to use this feature The quer
32. epeatedly starts and stops the waveform s playback The time duration for playback depends on the duty period of the trigger signal and the gate polarity selection The waveform plays during the 00 Berkeley Nucleonics 4 SCPI Commands 45 Model 845 835 6 Programmer s Manual V1 3 2013 inactive state and stops during the active polarity selection state The active state can be set high or low The gate mode works only with an external trigger source POINt Upon triggering only a single point of the sweep list is played RST NORM TRI Gger SEQuence TYPE GATE TRI Gger SEQuence TYPE GATE LOW HI GH TRI Gger SEQuence TYPE GATE This command selects the active state gate polarity of the gate while using the gating trigger mode The LOW and HIGH selections correspond to the low and high states of an external trigger signal For example when you select HIGH the active state occurs during the high of the trigger signal When the active state occurs the BNC UNITX000 starts the waveform playback at the last played sample point then stops the playback at the next sample point when the inactive state occurs LOW The waveform playback starts when the trigger signal goes low active state and stops when the trigger signal goes high inactive state HIGH The waveform playback starts when the trigger signal goes high active state and stops when the trigger signal goes low inactive state RST HIGH TRI Gger SEQuence
33. factor for a logarithmic step sweep 0 Berkeley Nucleonics 4 SCPI Commands 23 Model 845 835 6 Programmer s Manual V1 3 2013 SOURce PHASe Subsystem Command Parameters Unit Remark default SOURce PHASe REFerence SOURce PHASe AD ust lt value gt 0 radians PHASe REFerence SOURce PHASe REFerence This command sets the current output phase as a zero reference Subsequent phase adjustments are set relative to the new reference PHASel AD ust SOURce PHASe ADJ ust value unit SOURce PHASe ADJ ust This command adjusts the phase of the signal The query will only return values in radians RST The preset value is 0 0 Berkeley Nucleonics 4 SCPI Commands 24 7 Model 845 835 6 Programmer s Manual V1 3 2013 SOURce POWer Subsystem Command T Parmetes Unt Remark default SOURce POWer LEVel I MMediate AMPLitude value dBm SOURce POWer MODE FIXed LI ST SWEep FI Xed SOURce POWer STARt lt value gt dBm SOURce POWer STOP lt value gt dBm SOURce POWer STEP dB SOURce POWer ALC ON OFF 1 0 ON SOURce POWer ALC HOLD ON OFF 1 0 OFF SOURce POWer ATTenuation lt value gt dB V0 5 0 SOURce POWer ATTenuation AUTO ON OFF 1 0 ON V0 5 0 SOURce POWer ATTenuation Ll ST V0 5 0 LEVel I MMediate AMPLitude SOURce POWer LEVel MMediate AMPLitude value
34. h VOR STATe SOURce ILS GS STATe ON OFF 1 0 SOURce ILS GS STATe This command enables or disables the VOR modulation RSTOFF VOR STATe SOURce VOR BEARing value RAD DEG SOURce VOR BEARing This command sets the VOR bearing in radians Append DEG to set the bearing in degrees RST OFF VOR TEST SOURce I LS GS TEST NORTh SOUTh EAST WEST 1 2 This command selects a predefined VOR test setting RST NORTh 0 Berkeley Nucleonics 4 SCPI Commands 44 Model 845 835 6 Programmer s Manual V1 3 2013 TRI Gger Subsystem Triggers control the playback by telling the BNC UNITX000 when to play the signal Depending on the trigger settings for the BNC UNITX000 the waveform playback can occur once continuously or the BNC UNITX000 may start and stop playing the waveform repeatedly GATE mode A trigger signal comprises both positive and negative signal transitions states which are also called high and low periods You can configure the BNC UNITX000 to trigger on either state of the trigger signal It is common to have multiple triggers also referred to as trigger occurrences or events occur when the signal generator requires only a single trigger In this situation the BNC UNITX000 recognizes the first trigger and ignores the rest When you select a trigger mode you may lose the signal from the RF output until you trigger the waveform There are four parts to configuring the trigge
35. h FI Xed the normal ON OFF modulation can be performed With LIST an arbitrary bit pattern can be loaded that will be used to modulate the carrier LIST mode is available with pulse train option RST FI Xed Berkeley Nucleonics 4 SCPI Commands 42 Model 845 835 6 Programmer s Manual V1 3 2013 SOURce I LS Subsystem Command Parameters Unit default SOURce ILS GS STATe ON OFF 1 0 OFF SOURce ILS GS TEST DDMO UP DOWN FLAG DDMO SOURce ILS LOCalizer STATe ONJOFF 1J0 OFF SOURce ILS LOCalizer TEST DDMO LEFT RIGHT FLAG DDMO ILS GS STATe SOURcel ILS GS STATe ON OFF 1 0 SOURce ILS GS STATe This command enables or disables the ILS glide slope modulation RSTOFF 1LS GS TEST SOURce I LS GS TEST DDMO UP DOWN FLAG This command selects a predefined ILS glide slope test setting RST DDMO TLS LOC STATe SOURce ILS LOC STATe ON OFF 1 0 SOURce ILS LOC STATe This command enables or disables the ILS localizer modulation RSTOFF ILS LOC TEST SOURce ILS LOC TEST DDMO LEFT RIGHT FLAG This command selects a predefined ILS localizer test setting RST DDMO 0 Berkeley Nucleonics 4 SCPI Commands 43 Model 845 835 6 Programmer s Manual V1 3 2013 SOURce VOR Subsystem Command Parameters Unit default SOURce VOR STATe ON OFF 1 0 OFF SOURce VOR BEARing value 0 rad SOURce VOR TEST NORTh SOUTh EAST WEST 1 2 NORT
36. he first trigger and ignores the rest RST POS TRI GGer SEQuence RETRigger TRI GGer SEQuence RETRigger ON OFF IMMediate 0 Berkeley Nucleonics 4 SCPI Commands 46 _ Model 845 835 6 Programmer s Manual V1 3 2013 TRI GGer SEQuence RETRigger This command enables or disables the ARB retriggering mode the retrigger mode controls how the retriggering function performs while a waveform is playing ON 1 This choice specifies that if a trigger occurs while a waveform is playing the waveform will retrigger at the end of the current waveform sequence and play once more OFF 0 This choice specifies that if a trigger occurs while a waveform is playing the trigger will be ignored IMMediate This choice specifies that if a trigger occurs while a waveform is playing the waveform will reset and replay from the start immediately upon receiving a trigger RST ON TRI Gger SEQuence ECOunt TRI GGer SEQuence ECOunt value TRI GGer SEQuence ECOunt This command sets a modulo on consecutive trigger events Setting the value to N means that only every Nth trigger event will be considered Setting it to one means will use every trigger event that does not occur during a running sweep RST 1 Range 1 to 255 TRI Gger SEQuence OUTPut POLarity TRI GGer SEQuence OUTPut POLarity NORMal I NVerted TRI GGer SEQuence OUTPut POLarity This command sets the trigger output signal polarity Note that the trigger out
37. i enano hahahaha aa oa eek ee ke ke ee ee ee ee ee do ee 4 Using Sockets LAN MI EE ER EPARRRECER RD ALEE EE LEIRE AEA sions 6 Using and Configuring VXI 11 VISA ee ek teen teen ee kk ee ek ek ee ee teen nh ee ee ek ek ek aaa do d ee 6 Using Telnet LAN Port 18 ie ise rti e RA e AER aa RE ERR E RE RT TRA RR EE Ra 7 USB USBTMO Em 7 USB TMC Interface Connection and Setup using VISA iii kk ke a 7 USB TMC Interface Connection and Setup using Berkeley NUCICONICS API iii nnne 8 GPIB Interface Connection and Setup rerererererererererererererererererererererererererererererererererererererererererererenen 8 This documentation is available in an updated version of this programmer s manual ee 8 USING SCPI for BNG UNIT mensa d ond rela ee Risa Ruta Ba etos FREU EE edi be trinnet 8 3 IEEE 488 Interface CommandS esse se sesse ee ee se ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee 9 IEEE Mandated ad UP ON NE RE EE EE PER aait 9 4 SCP COMMAM AS isi fa issie oed evutadae naaa Ge ee ert Ge WEEG ee d dea Ras vil GR ER de ee veda ee dae ee be 12 INEOQUCHON AO ER ER N EE EEA 12 SCPI Command TYDES GEE GEE GER GEGEE RE SEGE GEES GE GER GR GE GER GR GE GEE GR oe GEREG VER VEE GER SEGE KERR VEE GEE WEER 12 SCPI Command SYMAX RR OE EE NS 13 Hierarchical Command Structure se Ee ke Ne Re GE EE ee renn anna ee ek ee ee Re iieii aa nana aaa 14 Status System dele EE OE bre 15 SCPI Command Des
38. indicate that an execution error has occurred Execution errors have SCPI error codes from 299 to 200 5 Set to indicate that a command error has occurred Command errors have SCPI error codes from 199 to 100 6 User request 7 Power on Standard Event Status Enable register ESE commands Operation Status Group The Operation Status group consisting of the Operation Condition register the Operation Positive Transition register the Operation Negative Transition register the Operation Event register and the Operation Event Enable register is used to determine the specific condition that set bit 7 in the Summary Status Byte The bits in the Operation Event register provide the following Questionable Status Group The Questionable Status group consisting of the Questionable Condition register the Questionable Positive Transition register the Questionable Negative Transition register the Questionable Event register and the Questionable Event Enable register is used to determine the specific condition that set bit 3 in the Summary Status Byte 0 Berkeley Nucleonics 4 SCPI Commands 17 Model 845 835 6 Programmer s Manual V1 3 2013 SCPI Command Description ABORt Subsystem The ABORt command is a single command subsystem There are no subcommands or associated data parameters as shown below The ABORt command along with the TRIGger and INITiate commands comprise the Trigger group of commands
39. ization and other common functions Commands declared mandatory by EEE 488 2 CLS Clear Status Command ESE Standard Event Status Enable Command ESE Standard Event Status Enable Query ESR Standard Event Status Register Query DN Identification Query OPC Operation Complete Command OPC Operation Complete Query RST Reset Command SRE Service Request Enable Command SRE Service Request Enable Query STB Read Status Byte Query TST Self Test Query WAI Wait to Continue Command CLS The Clear Status CLS command clears the status byte by emptying the error queue and clearing all the event registers including the Data Questionable Event Register the Standard Event Status Register the Standard Operation Status Register and any other registers that are summarized in the status byte ESE data The Standard Event Status Enable ESE command sets the Standard Event Status Enable Register The variable lt data gt represents the sum of the bits that will be enabled Range 0 255 Remarks The setting enabled by this command is not affected by signal generator preset or RST However cycling the signal generator power will reset this register to zero ESE The Standard Event Status Enable ESE query returns the value of the Standard Event Status Enable Register ESR The Standard Event Status Register ESR query returns the value of the Standard Event Status Register NOTE Reading the Standard Event St
40. keley Nucleonics 4 SCPI Commands 12 Model 845 835 6 Programmer s Manual V1 3 2013 e Common commands IEE488 2 mandated commands e SCPI required commands e SCPI optional commands per SCPI 1999 0 e SCPI compliant commands that are unique to the BNC UNIT Not all of the commands supported by the instrument are taken from the SCPI standard however their syntax follows SCPI rules SCPI Command Syntax Typical SCPI commands consist of one or more keywords parameters and punctuation SCPI command keywords can be a mixture of upper and lower case characters Except for common commands each keyword has a long and a short form In this manual the long form is presented with the short form in upper case and the remainder in lower case Unrecognized versions of long form or short form commands or improper syntax will generate an error Structure of a Command Line A command line may consist of one or several commands It is terminated by an EOI together with the last data byte Several commands in a command line must be separated by a semicolon If the next command belongs to a different command system the semicolon is followed by a colon A colon at the beginning of a command marks the root node of the command tree If the successive commands belong to the same system having one or several levels in common the command line can be abbreviated To this end the second command after the semicolon starts with the leve
41. l that lies below the common levels The colon following the semicolon must be omitted in this Case Responses to Queries A query is defined for each setting command unless explicitly specified otherwise It is formed by adding a question mark to the associated setting command According to SCPI the responses to queries are partly subject to stricter rules than in standard IEEE 488 2 Parameters Most commands require a parameter to be specified The parameters must be separated from the header by a white space Permissible parameters are numerical values Boolean parameters text 0 Berkeley Nucleonics 4 SCPI Commands 13 Model 845 835 6 Programmer s Manual V1 3 2013 character strings and block data The type of parameter required for the respective command and the permissible range of values are specified in the command description Numerical values Numerical values can be entered in any form i e with sign decimal point and exponent Values exceeding the resolution of the instrument are rounded up or down The mantissa may comprise up to 255 characters the values must be in the value range 9 9E37 to 9 9E37 The exponent is introduced by an E or e Entry of the exponent alone is not allowed Units n the case of physical quantities the unit can be entered Permissible unit prefixes are G giga MA mega MHZ are also permissible K kilo M milli U micro and N nano If the unit is missing the ba
42. mmand resets most signal generator functions to factory defined conditions Remarks Each command shows the RST default value if the setting is affected SAV lt reg gt The Save SAV command saves signal generator settings to the specified memory register lt reg gt Remarks The save function does not save all signal generator settings Refer to the User s Guide for more information on the save function SRE data The Service Request Enable SRE command sets the value of the Service Request Enable Register The variable data is the decimal sum of the bits that will be enabled Bit 6 value 64 is ignored and cannot be set by this command Range 0 255 The setting enabled by this command is not affected by signal generator preset or RST However cycling the signal generator power will reset it to zero SRE The Service Request Enable SRE query returns the value of the Service Request Enable Register Range 0 63 amp 128 191 STB The Read Status Byte STB query returns the value of the status byte including the master summary status MSS bit Berkeley Nucleonics 3 I EEE 488 Interface Commands 10 Model 845 835 6 Programmer s Manual V1 3 2013 Range 0 255 TRG The Trigger TRG command triggers the device if LAN is the selected trigger source otherwise TRG is ignored TST The Self Test TST query initiates the internal self test and returns one of the following results 0 This shows that
43. ncy and or power for the current point The setting enabled by this command is not affected by signal generator power on preset or RST The variable value is expressed in units of seconds default 300 uS SWEep PROGgress SOURce SWEep PROGgress This query returns the progress of an active sweep 0 0 1 0 SWEep SPACing SOURce SWEep SPACing LI Near LOGarithmic SOURce SWEep SPACing This command enables the signal generator linear or logrithmic sweep modes These commands require the signal generator to be in step mode The instrument uses the specified start frequency stop frequency and number of points for both linear and log sweeps RST LIN STARt SOURce POWer STARt value unit SOURce POWer STARt This command sets the first amplitude point in a step sweep RST Range Refer to LEVel IMMediate AMPLitude command for the output power ranges STOP SOURce POWer STOP value unit SOURce POWer STOP This command sets the last amplitude point in a step sweep RST Range Refer to LEVel MMediate AMPLitude command for the output power ranges 0 Berkeley Nucleonics 4 SCPI Commands 36 Model 845 835 6 Programmer s Manual V1 3 2013 SOURce AM Subsystem Amplitude Modulation Command Parameters Unit default SOURce AM DEPTh lt value gt 0 8 80 PCT SOURce AM STATe ONJOFF 1 O SOURce AM INTernal FREQuency
44. ncy value of an externally applied reference the signal generator The variable val is expressed in units of MHz RST 10 MHz Range 1 to 250 MHz LOCKed SOURce ROSCillator LOCKed This command queries if the synthesizer is locked to the externally applied reference OUTPut STATe SOURce ROSCillator OUTPut STATe ON OFF 1 0 SOURce ROSCillator OUTPut STATe This command enables or disables the 10 MHz frequency reference output RST OFF SOURce SOURce ROSCillator SOURce INT EXT This command selects either an internal or external reference for the waveform clock RST INT 0 Berkeley Nucleonics 4 SCPI Commands 29 Model 845 835 6 Programmer s Manual V1 3 2013 SOURce LI ST Subsystem Command Parameters Unit Remark default SOURce LIST COUNt INFinite value INFinite SOURce LIST DIRection UP DOWN RANDom UP SOURce LI ST DWELI value S SOURce LI ST DELay value S SOURce LI ST DELay AUTO ON OFF 1 0 ON SOURce LI ST FREQuency POI Nts SOURce LI ST FREQuency value value Hz SOURce LI ST MANual lt value gt UP DOWN SOURce LI ST MODE AUTO MANual SOURce LIST POWer value value dBm SOURce LI ST POWer POI Nts SOURce LI ST PROGress LIST COUNt I NFinite value SOURce LIST COUNt Infinite value SOURce LIST COUNt This command sets the number of list repetitions being
45. or s front panel and returning the LAN Status indicator to display the current network state For more information refer to the Programming Guide LAN I P SYSTem COMMunicate LAN IP lt ipstring gt SYSTem COMMunicate LAN IP This command sets the signal generator s local area network LAN internet protocol IP address for your IP network connection LAN KEEP TI Meout not implemented SYSTem COMMunicate LAN KEEP TI Meout value SYSTem COMMunicate LAN KEEP TI Meout This command sets the length of time for the TCP Keep Alive setting Range 0 sec to 3600 sec 0 Berkeley Nucleonics 4 SCPI Commands 52 Model 845 835 6 Programmer s Manual V1 3 2013 LAN RESTart SYSTem COMMunicate LAN RESTart This command restarts the network to enable changes that have been made to the LAN setup LAN SUBNet SYSTem COMMunicate LAN SUBNet ipstring SYSTem COMMunicate LAN SUBNet This command sets the signal generator s local area network LAN subnet mask address for your internet protocol IP network connection SOCKet ECHO SYSTem COMMunicate SOCKet ECHO This command turns the echo from the BNC UNIT controller on or off Echo is typically turned on only for a telnet session The BNC UNIT returns a gt gt prompt when ready 0 Berkeley Nucleonics 4 SCPI Commands 53 Model 845 835 6 Programmer s Manual V1 3 2013 UNIT Subsystem Command Parameters Unit default Remark UNI
46. put must be enabled by sending the SOURce LFOutput SOURce TRI Gger command RST NORM TRI Gger SEQuence OUTPut MODE TRI GGer SEQuence OUTPut MODE NORMal GATE POI Nt This command sets the trigger output signal mode NORMal The trigger output signal is pulsed once whenever playing a waveform sequence is triggered GATE The trigger output signal is set when playing a waveform sequence is triggered and reset when playing stops POINT The trigger output signal is pulsed for each point of the sweep list playing Note that the trigger output must be enabled by sending the SOURce LFOutput SOURce TRI Gger command RST NORM 0 Berkeley Nucleonics 4 SCPI Commands 47 Model 845 835 6 Programmer s Manual V1 3 2013 STATus Subsystem This subsystem controls the status reporting structures Command Parameters Unit Remark default STATus OPERation EVENt STAT us OPERation CONDition STATus OPERation ENABle value STAT us OPERation PTR lt value gt STAT us OPERation NTR lt value gt STATus PREset STATus QUEStionable EVENt STAT us QUEStionable CONDition STATus QUEStionable ENABle lt value gt STATus QUEStionable PTR lt value gt STATus QUEStionable NTR value OPERation STATus OPERation EVENt This query returns the contents of the operation status event register and clears it OPERation CONDition STA
47. r 1 Choosing the trigger type which controls the waveform s transmission e NORMal trigger edge initiates stops sweeps e GATE trigger level starts stops sweep 2 Setting the waveform s response to triggers CONTinuous reapeatedly accepts trigger events SINGIe uses only one trigger event 3 Selecting the trigger source which determines how the BNC UNITX000 receives its trigger signal internally or externally The GATE choice requires an external trigger 3 Setting the trigger polarity when using an external source Command Parameters Unit Remark default TRI Gger SEQuence TYPE NORMal GATE POI Nt N A TRI Gger SEQuence TYPE GATE LOW HI GH HIGH TRI Gger SEQuence SOURce IMMediate KEY EXT BUS IMM TRI Gger SEQuence DELay value 0s TRI Gger SEQuence SLOPe POSitive NEGative POS TRI Gger SEQuence RETRigger ONJOFF IMMediate OFF TRI Gger SEQuence ECOunt value 1 TRI GGer SEQuence OUTPut POLarity NORMal I NVerted NORM TRI GGer SEQuence OUTPut MODE NORMal GATE POI Nt TRI Gger TYPE TRI Gger SEQuence TYPE NORMal GATE POINT TRI Gger SEQuence TYPE This command sets the trigger type that controls the waveform s playback The following list describes the trigger type command choices NORMal Upon triggering the waveform sequence plays according to settlings defined by INITiate CONTinuous only once or repeatedly GATE An external trigger signal r
48. r 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 under support Berkeley Nucleonics com VISA is an IO 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 Berkeley Nucleonics 2 Programming the MODEL 845 835 6 6 Model 845 835 6 Programmer s Manual V1 3 2013 Using Telnet LAN Port 18 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 Communication is interactive one command at a time The telnet service is available on port 18 Once a telnet session to the device is established the echo can be enabled by
49. s CSMA CD stands for Carrier Sense Multiple Access Collision Detection This standard enables network devices to detect simultaneous data channel usage called a collision and provides for a contention protocol When a network device detects a collision the CSMA CD standard dictates that the data will be retransmitted after waiting a random amount of time If a second collision is detected the data is again retransmitted after waiting twice as long This is known as exponential back off The TCP IP setup requires the following Berkeley Nucleonics 2 Programming the MODEL 845 835 6 4 Model 845 835 6 Programmer s Manual V1 3 2013 e P Address Every computer electronic device in a TCP IP network requires an IP address An IP address has four numbers each between 0 and 255 separated by periods For example 192 168 1 50 is a valid IP address Subnet Mask The subnet mask distinguishes the portion of the IP address that is the network ID from the portion that is the station ID The subnet mask 255 255 0 0 when applied to the IP address given above would identify the network ID as 192 168 and the station ID as 1 50 All stations in the same local area network should have the same network ID but different station IDs Default Gateway A TCP IP network can have a gateway to communicate beyond the LAN identified by the network ID A gateway is a computer or electronic device that is connected to two different networks and can move
50. s eese ana heh esa naa daa nna n 51 NLT SUDS GOU t 54 Company Details eter estre tre d f bc ET A rete eu bled eu V bu 55 Berkeley Nucleonics Introduction 2 Model 845 835 6 Programmer s Manual V1 3 2013 1 Introduction This manual provides information for remote operation of the BNC UNIT Signal Generators using commands sent from an external controller via Ethernet It includes the following e A general description of the LAN and the bus data transfer and control functions e A general description of how to establish connection to the BNC UNIT via LAN USB or GPIB e A listing of the IEEE 488 Interface Function Messages recognized by the signal generator with a description of its response e Acomplete listing and description of all the Standard Commands for Programmable Instruments SCPI commands that can be used to control signal generator operation with examples of command usage Berkeley Nucleonics Introduction 3 Model 845 835 6 Programmer s Manual V1 3 2013 2 Programming the MODEL 845 835 6 The BNC UNIT can be accessed though LAN USB or GIPB interface All interfaces use standard SCPI command set to pass commands to the device LAN The BNC UNIT 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 and controlled by a LAN based computer LAN and its associa
51. s groups are used to determine the specific nature of the event or condition Summary Status Byte Group The Summary Status Byte group consisting of the Summary Status Byte Enable register and the Summary Status Byte is used to determine the general nature of an BNC UNIT event or condition The bits in the Summary Status Byte provide the following Operation Status Group The Operation Status group consisting of the Operation Condition register the Operation Positive Transition register the Operation Negative Transition register the Operation Event register and the Operation Event Enable register Standard Event Status Group 0 Berkeley Nucleonics 4 SCPI Commands 16 Model 845 835 6 Programmer s Manual V1 3 2013 The Standard Event Status group consisting of the Standard Event Status register an Event register and the Standard Event Status Enable register is used to determine the specific event that set bit 5 of the Summary Status Byte The bits in the Standard Event Status register provide the following Bit Description 0 Set to indicate that all pending BNC UNIT operations were completed following execution of the OPC command 1 Request control 2 Set to indicate that a query error has occurred Query errors have SCPI error codes from 499 to 400 3 Set to indicate that a device dependent error has occurred Device dependent errors have SCPI error codes from 399 to 300 and 1 to 32767 4 Set to
52. sic unit is used Boolean Parameters Boolean parameters represent two states The ON state logically true is represented by ON or a numerical value unequal to 0 The OFF state logically false is represented by OFF or the numerical value 0 ON or OFF is returned by a query Hierarchical Command Structure All SCPI commands except the common commands are organized in a hierarchical structure similar to the inverted tree file structure used in most computers The SCPI standard refers to this structure as the Command Tree The command keywords that correspond to the major instrument control functions are located at the top of the command tree The command keywords for the BNC UNIT SCPI command set are shown below ABORt DIAGnostic DISPlay INI Tiate OUTput SOURce STATus SYSTem 0 Berkeley Nucleonics 4 SCPI Commands 14 Model 845 835 6 Programmer s Manual V1 3 2013 TRI Gger UNIT All BNC UNIT SCPI commands except the ABORt command have one or more subcommands keywords associated with them to further define the instrument function to be controlled The subcommand keywords may also have one or more associated subcommands keywords Each subcommand level adds another layer to the command tree The command keyword and its associated subcommand keywords form a portion of the command tree called a command subsystem Status System Programming The BNC UNIT implements the status byte register the Service Req
53. ted interface operations are defined in the IEEE 802 2 standard The MODEL 845 835 6 support the following LAN interface protocols 1 Socket based LAN the application programming interface API provided with the instrument supports general programming using the LAN interface under Windows operating system 2 VXI 11 3 Telephone Network TELNET TELNET is used for interactive one command at a time instrument control 4 Internet protocol optionally supported 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 Ethernet I nterface Connection and Setup The MODEL 845 835 6 fully supports the IEEE 802 3 standard Most front panel functions except power on off can be remotely controlled via a network server and an Ethernet connection The BNC UNIT software supports the TCP IP network protocol Ethernet uses a bus or star topologies where all of the interfacing devices are connected to a central cable called the bus or are connected to a hub Ethernet uses the CSMA CD access method to handle simultaneous transmissions over the bu
54. ting the frequency and or power for the current point to suppress output transients during a frequency change The setting enabled by this command is not affected by signal generator power on preset or RST The variable value is expressed in units of seconds LIST DELay AUTO SOURce LI ST DELay AUTO ON OFF 1 0 This command enabled the automatic blanking of the output during transients between two frequency steps RST ON LIST FREQency POI Nts SOURce LIST POINts This command queries the signal generator for the number of frequency points in the current list sweep file LI ST FREQuency SOURce LIST FREQuency lt value gt lt value gt SOURce LIST FREQuency This command sets the frequency values for the current list sweep points The maximum number of list sweep points is 3 501 The variable lt value gt is expressed in units of Hertz The setting enabled by this command is not affected by signal generator power on preset or RST Range Please consult the Data Sheet LIST MANual SOURce LIST MANual lt value gt UP DOWN SOURce LI ST MANual This command sets a list or step sweep point as the current sweep point controlling the frequency and power output If list or step mode is controlling frequency or power or both then the indexed point in the respective list s will be used Entering a value with this command will have no effect unless MANual is the selected mode Refer to LIST MODE
55. typing SYST COMM SOCK ECHO ON Following this command a prompt gt gt should become visible USB USBTMC The MODEL 845 835 6 support the following USB interface protocols 1 USBTMC class device via VISA USBTMC stands for USB Test amp Measurement Class USBTMC is a protocol built on top of USB that allows GPIB like communication with USB devices From the user s point of view the USB device behaves just like a GPIB device USBTMC allows instrument manufacturers to upgrade the physical layer from GPIB to USB while maintaining software compatibility with existing software such as instrument drivers and any application that uses VISA This is also what the VXI 11 protocol provides for TCP IP 2 USBTMC with propriatery drivers the application programming interface API provided with the instrument supports general programming using the USB interface under Windows operating system Please check with Berkeley Nucleonics about the availability of the USB host drivers USB TMC I nterface Connection and Setup using VI SA USBTMC stands for USB Test amp Measurement Class USBTMC is a protocol built on top of USB that allows GPIB like communication with USB devices From the user s point of view the USB device behaves just like a GPIB device For example you can use VISA Write to send the IDN query and use VISA Read to get the response The USBTMC protocol supports service request triggers and other GPIB specific operations USB
56. uest Enable Register the Standard Event Status Register and the Standard Event Status Enable Register The BNC UNIT status system consists of the following SCPI defined status reporting structures e Thelnstrument Summary Status Byte e The Standard Event Status Group e The Operation Status Group e The Questionable Status Group The following paragraphs describe the registers that make up a status group and explain the status information that each status group provides Status Registers In general a status group consists of a condition register a transition filter an event register and an enable register Each component is briefly described in the following paragraphs Condition Register The condition register is continuously updated to reflect the current status of the BNC UNIT There is no latching or buffering for this register it is updated in real time Reading the contents of a condition register does not change its contents Transition Filter 0 Berkeley Nucleonics 4 SCPI Commands 15 Model 845 835 6 Programmer s Manual V1 3 2013 The transition filter is a special register that specifies which types of bit state changes in the condition register will set corresponding bits in the event register Negative transition filters NTR are used to detect condition changes from True 1 to False 0 positive transition filters PTR are used to detect condition changes from False 0 to True 1 Setting both positive
57. utput amplitude is fixed 2 5 V RST SINE LFOutput SOURce SOURce LFOutput SOURce LFGenerator PULM TRI Gger SOURce LFOutput SOURce 0 Berkeley Nucleonics 4 SCPI Commands 33 Model 845 835 6 Programmer s Manual V1 3 2013 This command sets the low frequency generator waveform This setting does only take effect if LFOutput SOURGCe is set to LFGenerator LFGenerator This selects the low frequency generator as the function output signal PULM This selects the pulse modulation video out as the function output signal TRI Gger This selects the trigger as the function output signal RST LFG 0 Berkeley Nucleonics 4 SCPI Commands 34 __ Model 845 835 6 Programmer s Manual V1 3 2013 SOURce SWEep Subsystem Command Parameters Unit Remark default SOURce SWEep COUNt INFinite value INFinite SOURce SWEep DI Rection UP DOWN RANDom UP SOURce SWEep POI Nts 2 to 65535 SOURce SWEep DWELI value S SOURce SWEep DELay value S SOURce SWEep DELay AUTO ONJOFF 1 0 ON V0 5 0 SOURce SWEep PROGress SOURce SWEep SPACing LI Near LOGarithmic SOURce FREQuency MODE FIXed CW SWEep LIST SOURce FREQuency STARt fmin to fmax Hz SOURce FREQuency STOP fmin to fmax Hz SOURce POWer MODE FIXed LIST SWEep SOURce POWer STARt lt value gt dBm SOURce POWer STOP value dBm SWEep COUNt I NFinite
58. value SOURce SWEep COUNt Infinite value SOURce SWEep COUNt This command sets the number of sweep repetitions being played after triggering a sweep If set to INFinite the sweep will be repeated until a SOURce FREQuency MODE or SOURce POWer MODE command is issued RST INFinite Range NFinite or 2 65535 SWEep DI Rection UP DOWN RANDom SOURce SWEep DIRection UP DOWN RANDom SWEep POI Nts SOURce SWEep POI Nts value SOURce SWEep POI Nts This command defines the number of step sweep points RST 101 Range 2 65535 SWEep DWELI SOURce SWEep DWELI value SOURce SWEep DWELI This command sets the dwell time for the current step sweep points Dwell time is used when IMMediate is the trigger source The dwell time is the amount of time the sweep is guaranteed to pause after setting the frequency and or power for the current point The setting enabled by this command is not affected by signal generator power on preset or RST The variable value is expressed in units of seconds default 1000 uS SWEep DELay 0 Berkeley Nucleonics 4 SCPI Commands 35 Model 845 835 6 Programmer s Manual V1 3 2013 SOURce SWEep DELay value SOURce SWEep DELay This command sets the off time for the current step sweep points Off time is used when MMediate is the trigger source The off time is the amount of time the sweep is guaranteed to pause after setting the freque
59. value 400 Hz SOURce AM SOURce INTernal EXTernal AM DEPTh SOURce AM DEPTh value SOURce AM DEPTh This command sets the amplitude modulation depth 0 1 RST 0 8 Range 0 0 99 AM I NT FREQuency SOURce AM INTernal FREQuency value unit UP DOWN SOURce AM INTernal FREQuency This command sets the internal amplitude modulation rate RST 400 Hz Range 10 Hz to 50 000 Hz The RF carrier is modulated when you have set the signal generator s AM modulation state to ON Whenever amplitude modulation is enabled the AM on is in the display 0 Berkeley Nucleonics 4 SCPI Commands 37 Model 845 835 6 Programmer s Manual V1 3 2013 SOURce FM Subsystem Frequency Modulation Command Parameters Unit default SOURce FM DEViation lt value gt 1000 Hz SOURce FM SENSitivity lt value gt 1000 Hz V SOURce FM INT FREQuency value 400 Hz SOURce FM SOURce INTernal EXTernal EXT SOURce FM STATe ON OFF 1 0 OFF SOURce FM COUPling DC AC AC FM DEViation SOURce FM SENSitivity value SOURce FM SENSitivity This command sets the frequency modulation deviation This setting will be used if FM SOURGCe is set to LFGenerator The variable value is expressed in units of Hertz RST 1000 FM SENSitivity SOURce FM SENSitivity lt value gt SOURce FM SENSitivity This command sets the frequency modulation deviation per one volt pe
60. y returns the current setting not the saved setting LAN DNS SERVer not implemented SYSTem COMMunicate LAN DNS SERVer lt ipstring gt SYSTem COMMunicate LAN DNS SERVer This command defines the IP address of the signal generator DNS server This entry defines the DNS server for the signal generator LAN connection The query returns the current setting not the saved setting LAN GATeway SYSTem COMMunicate LAN GATeway lt ipstring gt SYSTem COMMunicate LAN GATeway This command sets the gateway for local area network LAN access to the signal generator from outside the current sub network The query returns the current setting not the saved setting LAN HOSTname SYSTem COMMunicate LAN HOSTname lt string gt SYSTem COMMunicate LAN HOSTname This command sets the signal generator s local area network LAN connection hostname Maximum 29 characters are allowed The query returns the current setting not the saved setting LAN I DENtify not implemented SYSTem COMMunicate LAN I DENtify ON OFF 1 0 This command controls the LAN identify feature ON 1 The command enables device identification by displaying the full screen message Identify IP Address on the signal generator s front panel the LAN Status indicator will also show IDENTIFY For more information refer to the Programming Guide OFF 0 This command disables device identification by clearing the message on the signal generat

2013 - Berkeley Nucleonics Corporation

Contents

Download Pdf Manuals

Related Search

Related Contents