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VM3640A - VTI Instruments

1. Examples Command Query OUTP FILT TYP ELL OUTP FILT TYP Sets the output filter type to elliptical ELL Indicates that the output filter type is elliptical Related Commands SOURce JOUTPut FILTer LPASs STATe 82 VM3640A Command Dictionary www vtiinstruments com SOURce OUTPut STATe Purpose Enables or disables the MAIN OUT output Type Setting Command Syntax SOURce OUTPut STATe lt boolean gt HMM ere lt boolean gt 0 1 OFF ON RST Value 0 Query Syntax SOURce OUTPut STATe Query Parameters N A Query Response OI Description The Source Output State command controls the MAIN OUT output relay The default setting is disabled Examples Command Query FUNC PULS WIDT 30e 6 FUNC PULS WIDT FUNC PULS WIDT 30e 6 10e3 Sets the pulse width to 30 us 30 Indicates that the pulse width is 30 us Sets the pulse width to 30 us and the pulse frequency to 10 kHz Related Commands N A VM3640A Command Dictionary 83 VTI Instruments Corp SOURce ROSC SOURce Purpose Selects the source for the reference oscillator Type Setting Command Syntax SOURce ROSC SOURce lt rosc_sre gt AIRE lt rosc_src gt PLL EXT RST Value PLL Query Syntax SOURce ROSC SOURce Query Parameters N A Query Response PLL EXT Description The Source ROSC Source command
2. Query Parameters N A Query Response Returns the set value of the lt numeric_value gt parameter for this command Description The Calibration Data Offset Gain command directly sets the offset gain correction This setting is usually calculated by calibration Calibration commands should only be executed by qualified personnel Changing these values incorrectly can cause the instrument to perform improperly Examples Command Query CAL DATA OFFS 5 CAL DATA OFFS Response Description Sets the offset gain correction to 5 5 Returns the offset gain correction value Related Commands CALibration DATA OFFSet OFFSet CALibration SECure CODE CALibration SECure STATe CALibration STORe VM3640A Command Dictionary 47 VTI Instruments Corp CALibration DATA OFFSet OFFSet Purpose Directly set the output offset voltage control offset Type Setting Command Syntax CALibration DATA OFFSet OFFSet lt numeric_value gt nem NEITS lt numeric_value gt numeric value from 0 to 4095 RST Value N A Query Syntax CALibration DATA OFFSet OFFSet Query Parameters N A Query Response Returns the set value of the lt numeric_value gt parameter for this command Description The Calibration Data Offset Offset command directly sets the output offset voltage control offset This setting is usually calculated by calibration Calibrati
3. Example FUNC USER NAME 18wavename 4 Select the user waveform by word serial command Example OUTPUT ON FUNC USER 22 VM3640A Programming www vtiinstruments com SECTION 4 COMMAND DICTIONARY INTRODUCTION This section presents the instrument command set It begins with three alphabetical listings of all the commands supported by the VM3640A IEEE 488 2 commands the instrument specific or device dependent SCPI commands and the required SCPI commands Each listing includes a brief description of each command function The remainder of this section is devoted to describing each command one per page in detail The description is presented in a way to assist the user in the use of each command Every command entry describes the exact command and or query syntax the use and range of parameters and a description of the command s purpose ALPHABETICAL COMMAND LISTING The following tables provide an alphabetical listing of each command supported by the VM3640A along with a brief definition If an X is found in the column titled RST then the value or setting controlled by this command is possibly changed by the execution of the RST command If no X is found then RST has no effect The Reset Value column gives the value of each command s setting when the unit is powered up or when a RST command is executed The following table lists the IEEE 488 2 Common Commands See the JEEE Standar
4. Examples Command Query Response Description SWE STAT 1 Enables sweep mode Related Commands SOURce SWEep COUNt SOURce SWEep DIRection SOURce SWEep MODE SOURce SWEep POINts SOURce SWEep SPACing SOURce SWEep STARt SOURce SWEep STOP SOURce SWEep TIME 92 VM3640A Command Dictionary www vtiinstruments com SOURce SWEep TIME Purpose Sets the sweep duration time Type Setting Command Syntax SOURce SWEep TIME lt time_val gt HMM ENEE CH lt time val gt 0 0005 s to 348160 s RST Value 0 100 s Query Syntax SOURce SWEep TIME Query Parameters N A Query Response Returns the set value of the lt time_val gt parameter for this command Description The Source Sweep Time command sets the sweep duration time in seconds time depends on the number of points in the sweep time points must be gt 250e 6 Time must not exceed 348160 seconds The default setting is 0 100 seconds Examples Command Que Response Description SWE TIME 0 030 Sets the sweep time to 30 ms Related Commands SOURce SWEep COUNt SOURce SWEep DIRection SOURce SWEep MODE SOURce SWEep POINts SOURce SWEep SPACing SOURce SWEep STARt SOURce SWEep STOP SOURce SWEep STATe VM3640A Command Dictionary VTI Instruments Corp SOURce SYNC MODE Purpose Selects the sync mode Type Setting Command Syntax SOURce SYNC MO
5. 26 93 SOURce SWEep STATe 26 92 ESKESTA TO NEE 25 58 59 SOURce SYNC MODE 26 94 K SOURce SYNC STATe 26 95 SOURce TRIGger GATE 26 96 Key WOT secs civeseds scacsecs devece iii no 19 20 SOURce TRIGger POLarity 26 98 SOURce TRIGger RATE oseere 26 99 L SOURce TRIGger TTLT T 26 100 AE 17 18 Lal Ree Kleer MOD 26 97 SOURce VOLTage LEVel OFFSet ee 26 102 M SOURce VOLTage LEVel AMPLitude 26 101 STATusOPtERapon CON Dipen 27 105 IMESSAGE DASEM EE 14 19 STATuSObEBationcEN Ale 27 106 114 VM3640A Index www vtiinstruments com STATus OPERation EVENt oseese 27 107 STATus PRESet coooooocnocinccococonocononnnonnconocnnonncnnnco nono 27 108 STATus QUEStionable CONDition eee 27 109 STATusOUE nonable EN ABle 27 110 STATus QUEStionable EVENt cccceeseeseeeee 27 111 syntax 19 23 SYSTem ERRO porn aronriii nest Errea i e Era ie 27 112 SYSTem VERSION 00 0 ee eeeeeeseeseceeecneeeseeeeceaeenes 27 113 T TEST RAM KEE 26 104 TESTEA E KEE 26 103 tree structured language oooooconcnnccnononononnnonncononnnonncnnncn nono 19 U user defined waveform ooooooccococccononcnocononononnns 22 26 75 76 H VM3640A Index 115
6. sample Command Query Response Description TRG Triggers an event Related Commands N A 38 VM3640A Command Dictionary www vtiinstruments com TST Purpose Causes a self test procedure to occur and queries the results Type IEEE 488 2 Common Command Command Syntax N A Command Parameter N A RST Value N A Query Syntax TST Query Parameters N A Query Response Numeric ASCII value from 0 to 143 Description ree query causes the VM3640A to run its self test procedures and report on the results sample Command Query Response Description TST 0 Begins the self test procedure returns the result Related Commands N A VM3640A Command Dictionary 39 VTI Instruments Corp WAI Purpose Halts execution of additional commands and queries until the No Operation Pending message is true Type IEEE 488 2 Common Command Command Syntax WAI Command Parameter N A RST Value N A Query Syntax N A Query Parameters N A Query Response N A Description The Wait to Continue command halts the execution of commands and queries until the No Operation Pending message is true This command makes sure that all previous commands have been executed before proceeding It provides a way of synchronizing the module with its commander Examples Command Query Response Description Pauses the execution of additi
7. STATe Purpose Enables or bypasses the output filter Type Setting Command Syntax SOURce OUTPut FILTer LPASs STATe lt boolean gt OTTO ERT ere lt boolean gt 0 1 OFF ON RST Value 1 Query Syntax SOURce OUTPut FILTer LPASs STATe Query Parameters N A Query Response OI Description The Source Output Filter Low Pass State command enables or disables the output filter between the output of the waveform DAC and the preamplifier The default setting is enabled Examples Command Query OUTP FILT 0 OUTP FILT Response Description Bypasses the output filter 0 Indicates that the output filter is bypassed or disabled Related Commands SOURce JOUTPut FILTer LPASs TY Pe VM3640A Command Dictionary 81 VTI Instruments Corp SOURce OUTPut FILTer LPASs TYPe Purpose Selects the output filter type Type Setting Command Syntax SOURce OUTPut FILTer LPASs TYPe lt filter_type gt Hine NIESEN lt filter type gt BESSel ELLiptical RST Value ELLiptical Query Syntax SOURce OUTPut FILTer LPASs TYPe Query Parameters N A Query Response BESS ELL Description The Source Output Filter Low Pass Type command selects the output filter type The Bessel type has the flattest response with constant group delay The Elliptical has the steepest cut off The default type is Elliptical
8. s hardware and software to a known state See the command index at the beginning of this chapter for the default parameter values used with this command Ne Command Query Response Description RST Resets the module Related Commands N A VM3640A Command Dictionary 35 VTI Instruments Corp SRE Purpose Type Command Syntax Command Parameters RST Value Query Syntax Query Parameters Query Response Description Examples Related Commands Sets the service request enable register IEEE 488 2 Common Command SRE lt mask gt lt mask gt Numeric ASCII value from 0 to 255 None Required Parameter SRE N A Numeric ASCII value from 0 to 255 The Service Request Enable SRE mask is used to control which bits in the status byte generate back plane interrupts If a bit is set in the mask that newly enables a bit set in the status byte and interrupts are enabled the module will generate a REQUEST TRUE event via an interrupt See the STB Command for the layout of bits Note Bit 6 is always internally cleared to zero as required by IEEE 488 2 section 11 3 2 3 The layout of the Service Request Enable Register is Bit 0 Unused Bit 1 Unused Bit 2 Error Queue Has Data Bit 3 Questionable Status Summary Not Used Bit 4 Message Available Bit 5 Event Status Summary Bit 6 0 per IEEE 488 2 section 11 3 2 3 Bi
9. zs Technology VM3640A ARBITRARY WAVEFORM GENERATOR USER S MANUAL P N 82 0061 000 Rev November 19 2011 VXI Technology Inc 2031 Main Street Irvine CA 92614 6509 949 955 1894 VXI Technology Inc www vtiinstruments com TABLE OF CONTENTS INTRODUCTION EA Ee ee eege 6 WATT AT ty ei fates E dere Eege Eege deer 6 Limitation Of AAA Zeta dere edd er 6 Restricted Rights Lead A ege dee Zeg Eege ed Ee 6 DECLARATION OF CONFORMITY ineine iiit A ANEN EEN deed EE H GENERAL SAFETY INSTRUCTIONS erageet 9 Terms and WEE 9 SUE EE 9 SUPPORT RESOURCES ae PR eS EE A EA nee NER edie 11 SECTION RE 13 INTRODUCTION loc ees ee ges ee dest eege A TE EEEE AE Mee tery 13 RE 13 SS O O 14 Calibre de a sd nd ado dde td a ed e a 14 Front Pannel COME tia 15 Clock Tin OU i358 te E orto ces dE del edo nd do SS A SIN tee ate 15 Tigger O 15 Marker Output da dada 15 Modulation Ku EE 15 Horizontal Sweep Outp t seniri dde cas 15 ETA O 15 SECTION A irinin n i a a a i 17 PREPARATION FOR BEE 17 P GENEE 17 Calculating System Power and Cooling Requirements oooccconocononnconoconcnnnconnonn nono nonn non ono nono rro nr corr nnnrnnn ran nrnn nan 17 Setting the Chassis Backplane Jumpers 18 Setting the Logical Address 18 SA ON 19 PROGRAMMING tdt EEN E D EE E td enn aii E EA 19 SI O e 19 Nota re at ee Arno a di al de a dd e e 20 are Ree 21 Loading and Running a User Defined Waveform cccecccessceescesecesecesecsc
10. Bit 5 Command Error Bit 6 User Request Bit 7 Power On The Operation Complete bit is set when it receives an OPC command The Query Error bit is set when data is over written in the output queue This could occur if one query is followed by another without reading the data from the first query The Execution Error bit is set when an execution error is detected Errors that range from 200 to 299 are execution errors The Command Error bit is set when a command error is detected Errors that range from 100 to 199 are command errors The Power On bit is set when the module is first powered on or after it receives a reset via the VXI Control Register Once the bit is cleared by executing the ESR command it will remain cleared Examples Command Que Response Description ESR Related Commands 32 VM3640A Command Dictionary www vtiinstruments com IDN Purpose Queries the module for its identification string Type IEEE 488 2 Common Command Command Syntax N A Command Parameter N A RST Value N A Query Syntax IDN Query Parameters N A Query Response ASCII character string Description The Identification IDN query returns the identification string of the module The response is divided into four fields separated by commas The first field is the manufacturer s name the second field is the model number the third field is an optional serial number a
11. Description The Source Sweep Spacing command sets the sweep spacing or frequency vs time as follows Linear Logarithmic The output frequency is swept linearly between the start and stop frequencies The output frequency is swept on a logarithmic curve between the start and stop frequencies The default setting is LINear Examples Command Query Response Description SWE SPAC LOG Sets the sweep spacing to be logarithmic Related Commands SOURce SWEep COUNt SOURce SWEep DIRection SOURce SWEep MODE SOURce SWEep POINts SOURce SWEep STARt SOURce SWEep STOP SOURce SWEep STATe SOURce SWEep TIME VM3640A Command Dictionary 89 VTI Instruments Corp SOURce SWEep STARt Purpose Sets the starting sweep frequency Type Setting Command Syntax SOURce SWEep STARt lt freq gt ANN lt freq gt le 1 to 2e7 RST Value 1000 1e3 Query Syntax SOURce SWEep STARt Query Parameters N A Query Response Returns the set value of the lt freq gt parameter for this command Description The Source Sweep Start command sets the sweep starting frequency The default is set to 1000 1e3 Examples Command Query Response Description SWE STAR 2000 Sets the sweep starting frequency to 2000 Hz Related Commands SOURce SWEep COUNt SOURce SWEep DIRection SOURce SWEep MODE SOURce SWEep POINts SOURce SWEep SPACing SOURce SW
12. VOLT OFFS 1 VOLT OFFS Sets the level of output offset voltage to 1 1 Verifies that the level of the output offset voltage is 1 Related Commands SOURce VOLTage LEVel AMPLitude 102 VM3640A Command Dictionary www vtiinstruments com TEST ALL Purpose Performs a non destructive test of the hardware Type Query Command Syntax N A Command Parameter N A RST Value N A Query Syntax TEST ALL Query Parameters N A Query Response Numeric value Description The Test All query performs a non destructive test of the hardware A result of 0 indicates that the test has passed a non zero value indicates failure Drevin ay Command Query Response Description TEST 0 Related Commands TEST RAM VM3640A Command Dictionary 103 VTI Instruments Corp TEST RAM Purpose Performs a destructive test of the Trace Memory Type Query Command Syntax N A Command Parameter N A RST Value N A Query Syntax TEST RAM Query Parameters N A Query Response Numeric value Description The Test Ram query runs a destructive self test of the Trace Memory A return of 0 indicates the test has passed Drevin ay Command Query Response Description TEST RAM Runs Trace Memory self test Related Commands TEST ALL 104 VM3640A Command Dictionary www vtiinstruments com REQUIRED SCPI COMMANDS STATus OPERatio
13. 0 Query Syntax PSK STATe Query Parameters N A Query Response OI Description The PSK State command enables or disable phase shift key modulation input The default state is disabled Examples Command Query PSK 1 PSK Enables the phase shift key modulation input 1 Indicates that the shift key modulation input is enabled Related Commands AM STATe FSK STATe 60 VM3640A Command Dictionary www vtiinstruments com RESet Purpose Type Command Syntax Command Parameters RST Value Query Syntax Query Parameters Query Response Description Examples Related Commands Resets all parameters to their default state Event RESet N A N A N A N A N A Command Query RES The Reset command resets all the parameters to their default state Response Description Disables calibration security N A VM3640A Command Dictionary 61 VTI Instruments Corp SENSe CORRection IMPedance Purpose Allows the user to set the value of the load resistor connected to the output Type Setting Command Syntax SENSe CORRection IMPedance lt resistor_value gt LORICH lt resistor value gt 10 0 to 100e6 Q RST Value 50 0 Q Query Syntax SENSe CORRection IMPedance Query Parameters N A Query Response Returns the set value of the lt resistor_value gt pa
14. 2 25 67 backplane jumpers SOURce FREQuency CW eeen we 25 68 SOURce FUNCtion DC VOL Tage ooconoccncon 25 69 C SOURce FUNCtion PULSe WIDTH 26 70 EE dci 25 42 SOURce FUNCtion SQUare DUTY 26 72 CALibration DC LEVel SOURce FUNCtion USER DIRectory 26 73 CALibration SECurity CODE SOURce FUNCtion USER FREE 26 74 CALibration SECurity STATe SOURce FUNCtion USER WAVE 26 76 CALibratiomSTATE EE SOURce FUNCtion USER NAME 26 75 EE SOURce FUNCtion SHAPe 26 71 CALibration DATA SOURce MARKer POLarity 26 78 CALibration DATA SOURce MARKer POSition 0 26 77 CALibration DATA ISO Ree INMARKer SOURece eee cee cteeeeeees 26 79 CALibration DATA SOURce MARKer STATE ooieoe 26 80 CALibration DATA SOURce JOUTPut FILTer LPASs TYPe 26 82 CALibration DAT Al SOURce OUTPut FILTer LPASs STATe 26 81 CALibration DATA SOURce JOUTPut STATel eee eeeeeeceeeneeeneeeee 26 83 CALibration DATA SOURce ROSC SOURce CALibration DATA SOURce SWEep COUNt CALibration DATA SOURce SWEep DIRection ocoicocnncnonicononiccnnnonon 26 86 COOLING muii dir arctan EEN SOURce SWEep MODE Se ISOURceISwWepn PONG 26 88 D ISOUlRcelSwWepSbACmg 26 89 dynamic address configuration oconcncnicnocncononocnnnincnnnonon 18 Ge SE GE E e a F SOURce SWEep TIME
15. Directly sets the offset gain correction CALibration DATA OFFSet OFFSet Directly sets the output offset voltage control offset CALibration DATA SQHI Set the positive limit of the square Assumes the wave output prior to the gain stage value last CALibration DATA SQLO Set the negative limit of the square stored in non wave output prior to the gain stage volatile CALibration DATA SQUare OFFSet OFFSet Square wave offset adjustment for memory calibration CALibration DATA ZERO Zero adjust for the output amplifier CALibration DC LEVel Directly sets the de level calibration point specified in the command CALibration SECure CODE Sets the code required to disable calibration security CALibration SECure STATe Enables or disables the calibration security CALibration STATe Enables or disables corrections using calibration data CALibration STORe Stores calibration data into non volatile memory CONTrol IPOWer This command applies power to or x 1 removes power from the instrument FSK STATe Enables or disables Frequency Shift x 0 Key modulation input PSK STATe Enables or disables Phase Shift Key x 0 modulation input RESet Resets all parameters to their default N A state SENSe CORRection IMPedance Allows the user to set the value of the load resistor connected to the output A SE SOURce BURSt COUNt Sets the number of cycles per burst X 1 SOURce BURSt PHASe Sets the phase of the output waveform X 0 SOURce BURSt RATE Sets the burst re
16. Fax 216 447 8951 VTI Instruments Pvt Ltd Bangalore Instrument Division 135 II amp III Floors Infantry Road Bangalore 560 001 India Phone 91 80 4040 7900 Phone 91 80 4162 0200 Fax 91 80 4170 0200 Technical Support Phone 949 955 1894 Fax 949 955 3041 E mail support vtiinstruments com Visit http www vtiinstruments com for worldwide support sites and service plan information VM3640A Preface 11 www vtiinstruments com SECTION 1 INTRODUCTION OVERVIEW The VM3640A is a high performance VXIbus arbitrary waveform generator that is ideal for applications requiring standard function generator capability or the need to generate customer defined waveforms Direct digital synthesis is used to provide outstanding functionality with standard sine and square waves available to 20 MHz The most powerful feature of the VM3640A is that it is part of the VMIP family of VXIbus products This gives the user the added flexibility of combining the VM3640A with two additional VM3640As providing a multi channel arbitrary waveform generator The VM3640A can also be combined with other instruments such as digital multimeters digitizers or counters to create a multi function C size card FIGURE 1 1 VMIP PLATFORM VM3640A Introduction 13 VTI Instruments Corp Each arbitrary waveform generator is treated as an independent instrument in the VXIbus chassis Each has
17. N A Query Response Returns the set value of the lt value gt parameter for this command Description The Calibration Data Zero command inputs the offset to adjust zero for the arbitrary waveforms during calibration personnel Changing these values incorrectly can cause the instrument to perform improperly 1 Calibration commands should only be executed by qualified Examples Command Query CAL DATA ZERO 2047 CAL DATA ZERO Response Description 2047 Related Commands CALibration SECure CODE CALibration SECure STATe CALibration STORe 52 VM3640A Command Dictionary www vtiinstruments com CALibration DC LEVel Purpose Directly sets the de level calibration point specified in the command Type Setting Command Syntax CALibration DC LEVel lt point gt lt dcv_level gt lt gain gt Command Parameter lt point gt 0 to 31 index into the calibration data structure lt dev_level gt 10 0 to 10 0 the de voltage level adjusted lt gain gt 5 0 to 5 0 the amount of adjustment RST Value N A Query Syntax CALibration DC LEVel lt point gt Query Parameters lt point gt 0 to 31 index into the calibration data structure Query Response Returns the set value of the lt dcv_level gt and lt gain gt parameters in the following format lt dcv_level gt lt gain gt Description The Calibration de Level command se
18. Purpose Square wave offset adjustment for calibration Type Setting Command Syntax CALibration DATA SQUare OFFSet OFFSet lt value gt ANN lt value gt numeric value from 0 to 4095 RST Value N A Query Syntax CALibration DATA SQUare OFFSet OFFSet Query Parameters N A Query Response Returns the set value of the lt value gt parameter for this command Description The CALibration DATA SQUare OFFSet OFFSet command sets the offset value for the square wave This number becomes the new zero value Calibration commands should only be executed by qualified personnel Changing these values incorrectly can cause the instrument to perform improperly Examples Command Query CAL DATA SQU OFFS OFFS 2047 CAL DATA SQU OFFS OFFS Response Description Sets the zero level at 2047 2047 Returns the set zero level Related Commands CALibration DATA DUTY CALibration DATA SQHI CALibration SECure CODE CALibration SECure STATe CALibration STORe VM3640A Command Dictionary 51 VTI Instruments Corp CALibration DATA ZERO Purpose Zero adjust for the output amplifier Type Setting Command Syntax CALibration DATA ZERO lt value gt ROT ERR eel lt value gt numeric value from 0 to 4095 DAC offset value RST Value N A Query Syntax CALibration DATA ZERO Query Parameters
19. Related Commands SOURce SYNC MODE VM3640A Command Dictionary 95 VTI Instruments Corp SOURce TRIGger GATE Purpose Selects gate mode Type Setting Command Syntax SOURce TRIGger GATE lt boolean gt HMM ere lt boolean gt 0 1 OFF ON RST Value 0 Query Syntax SOURce TRIGger GATE Query Parameters N A Query Response OI Description The Source Trigger Gate command selects the gated mode of operation when the trigger source is external The default value is disabled Examples Command Query Response Description TRIG GATE 1 Selects trigger gate mode Related Commands SOURce TRIGger MODE SOURce TRIGger POLarity SOURce TRIGger RATE SOURce TRIGger TTLT 96 VM3640A Command Dictionary www vtiinstruments com SOURce TRIGger MODE Purpose Selects the trigger source Type Setting Command Syntax SOURce TRIGger MODE lt trg_mode gt NEM NEITS lt trg mode gt BUS EXTernal MMediate INTernal RST Value IMM Query Syntax SOURce TRIGger MODE Query Parameters N A Query Response BUS EXT IMM INT Description The Source Trigger Mode command selects the trigger source The default selection is IMMediate Examples Command Query TRIG MODE EXT Response Description Selects external mode of trigger Related Commands SOURce TRIGger GATE SOURce TRIGger PO
20. See ANSI IEEE 488 2 1987 section 11 5 1 for a complete description of the ESE register A value of in a bit position of the ESE register enables generation of the Event Status Bit ESB in the Status Byte by the corresponding bit in the Event Status Register ESR If the ESB is set in the Service Request Enable SRE register then an interrupt will be generated See the ESR query for details regarding the individual bits The ESE register layout is Bit 0 Operation Complete Bit 1 Request Control Bit 2 Query Error Bit 3 Device Dependent Error Bit 4 Execution Error Bit 5 Command Error Bit 6 User Request Bit 7 Power On The Event Status Enable query reports the current contents of the Event Status Enable Register Examples Command Que Response Description ESE 36 ESE 36 Returns the value of the event status enable register Related Commands VM3640A Command Dictionary 31 VTI Instruments Corp ESR RST Value Query Syntax Query Parameters Query Response Numeric ASCII value from 0 to 255 Description The Event Status Register ESR query queries and clears the contents of the Standard Event Status Register This register is used in conjunction with the ESE register to generate the Event Status Bit ESB in the Status Byte The layout of the ESR is Bit 0 Operation Complete Bit 1 Request Control Bit 2 Query Error Bit 3 Device Dependent Error Bit 4 Execution Error
21. WARNINGS CONT Avoid Electric Shock To avoid electric shock or fire hazard do not operate this product with the covers removed Do not connect or disconnect any cable probes test leads etc while they are connected to a voltage source Remove all power and unplug unit before performing any service Service should only be performed by qualified personnel Ground the Product This product is grounded through the grounding conductor of the power cord To avoid electric shock the grounding conductor must be connected to earth ground Operating Conditions To avoid injury electric shock or fire hazard Do not operate in wet or damp conditions Do not operate in an explosive atmosphere Operate or store only in specified temperature range Provide proper clearance for product ventilation to prevent overheating DO NOT operate if you suspect there is any damage to this product Product should be inspected or serviced only by qualified personnel 10 VM3640A Preface www vtiinstruments com SUPPORT RESOURCES Support resources for this product are available on the Internet and at VTI Instruments customer support centers VTI Instruments Corp World Headquarters VTI Instruments Corp 2031 Main Street Irvine CA 92614 6509 Phone 949 955 1894 nstru m ents Fax 949 955 3041 VTI Instruments Cleveland Instrument Division 5425 Warner Road Suite 13 Valley View OH 44125 Phone 216 447 8950
22. be included or left out Omitting an optional parameter will cause its default to be used Parameters are enclosed by angle brackets lt gt Braces or curly brackets are used to enclose one or more parameters that may be included zero or more times A vertical bar read as or is used to separate parameter alternatives 20 VM3640A Programming www vtiinstruments com REGISTER ACCESS The VM3640A module supports direct register access for high speed data transfer The following table shows the A16 Memory Map TABLE 3 1 A16 MEMORY MAP NNNNNNNN WD WD WW WD Loi W La e HH S Ge e CP e E GG SC P Data Register 16 Bit ES A32 Pointer Low A32 Pointer High A24 Pointer Low A24 Pointer High Data Low Data High Response Data Extended Protocol Signal Register Offset Register Status Control Register Device Type ID Register ebben eebe VM3640A Programming 21 VTI Instruments Corp LOADING AND RUNNING A USER DEFINED WAVEFORM There are four main steps to setting up and running a User Defined Waveform 1 Define the waveform name and size by word serial command Example FUNC USER WAVE 213wavename 1024 Defines a user waveform named wavename that is 1024 samples long 2 Download the waveform data using bus access out register data transfer Example USER OFFSET 0x20 3 Select the downloaded waveform by word serial command
23. duty cycle Type Setting Command Syntax CALibration DATA DUTY lt value gt ROB NIT CR lt value gt 0 to 4095 DAC value for square wave duty cycle adjustment RST Value N A Query Syntax CALibration DATA DUTY Query Parameters N A Query Response Returns the set value of the lt value gt parameter for this command Description The Calibration Data Duty command sets the duty cycle of the square wave by inputting a voltage level cutoff point on the sine wave input personnel Changing these values incorrectly can cause the instrument to perform improperly 1 Calibration commands should only be executed by qualified Examples Command Query CAL DATA DUTY 2 CAL DATA DUTY Response Description Enables amplitude modulation input 2 Returns the value set for square wave duty cycle adjustment Related Commands CALibration DATA SQHI CALibration DATA SQUare OFFSet OFFSet CALibration SECure CODE CALibration SECure STATe CALibration STORe 46 VM3640A Command Dictionary www vtiinstruments com CALibration DATA OFFSet GAIN Purpose Directly set the offset gain correction Type Setting Command Syntax CALibration DATA OFFSet GAIN lt numeric_value gt BR OEB NIT ER lt numeric_value gt numeric value from 0 to 1000 RST Value N A Query Syntax CALibration DATA OFFSet GAIN
24. form is acceptable Note that there are no intermediate forms All characters of the short form or all characters of the long form must be used Short forms and long forms may be freely intermixed The actual commands sent can be in upper case lower case or mixed case case is only used to distinguish short and long form for the user As an example these commands are all correct and all have the same effect CALibration OFFSet GAIN lt value gt calibration offset gain lt value gt CALIBRATION OFFSET GAIN lt value gt CAL OFFSet GAIN lt value gt CAL OFFS GAIN lt value gt cal offs gain lt value gt VM3640A Programming 19 NOTATION VTI Instruments Corp The following command is not correct because it uses part of the long form of CALibration but not all the characters of the long form calib offs gain lt value gt Incorrect syntax extra ib only cal or calibration is correct All of the SCPI commands also have a query form unless otherwise noted Query forms contain a question mark The query form allows the system to ask what the current setting of a parameter is The query form of the command generally replaces the parameter with a question mark Query responses do not include the command header This means only the parameter is returned no part of the command or question is returned Keywords or parameters enclosed in square brackets are optional If the optional part is a keyword the keyword can
25. free space for user defined waveforms Type Query Command Syntax N A Ao N A RST Value N A Query Syntax SOURce FUNCtion USER FREE Query Parameters N A Query Response Returns the number of samples of free space Description The Source Function User Free query shows how much user defined space for waveforms is available Samples are 12 bits 2 bytes Examples Command Query FUNC USER FREE Response Description 126976 Shows that the sample space available is nearly 128 k Samples Related Commands SOURce FUNCtion USER DIRectory 74 VM3640A Command Dictionary www vtiinstruments com SOURce FUNCtion USER NAME Purpose Sets the output waveform shape to a user defined waveform Type Setting Command Syntax SOURce FUNCtion USER NAME lt block_data gt ROT ERR elevate block data gt IEEE 488 2 definite or indefinite length arbitrary block format RST Value N A Query Syntax SOURce FUNCtion USER NAME Query Parameters N A Query Response IEEE 488 2 definite or indefinite length arbitrary block format Description The Source Function User Name command sets the user defined waveform in an IEEE 488 2 definite or indefinite length arbitrary block format For example 1 8username Defines the name of the user defined waveform username This sets which user defined waveform will be outpu
26. output active while the waveform is waiting to be triggered RST Value 0 Query Syntax SOURce MARKer POSition Query Parameters N A Query Response Returns the set value of the lt mark_pos gt parameter Description The Source Marker Position command sets the position of the output marker to a specific point when the Marker Source is set to BBIT arbitrary waveform only The default setting is 0 Examples Command Que Response Description MARK POS 100 Sets the output marker position to 100 Related Commands SOURce MARKer POLarity SOURce MARKer SOURce SOURce MARKer STATe 78 VM3640A Command Dictionary www vtiinstruments com SOURce MARKer SOURce Purpose Selects the source to generate the output marker Type Setting Command Syntax SOURce MARKer SOURce lt mark_src gt new NEIES lt mark_src gt ZCROss BBITs RST Value ZCRO Query Syntax SOURce MARKer SOURce Query Parameters N A Query Response ZCRO BBIT Description The Source Marker Source command sets the source to generate the output marker ZCROss Selects a comparator output The comparator output is high if the instantaneous signal is above mid scale and low if the signal is below mid scale The Zero CROssing marker is valid for all waveforms However waveforms with multiple zero crossings such as cardiac or sinc will generate multiple ma
27. qualified personnel Changing these values incorrectly can cause the instrument to perform improperly Command Query Response Description CAL SEC CODE 16VM3640 Sets the factory code setting of VM3640 Examples Related Commands CALibration SECure STATe CALibration STORe 54 VM3640A Command Dictionary www vtiinstruments com CALibration SECure STATe Purpose Enable or disable the calibration security Type Setting Command Syntax CALibration SECure STATe lt boolean gt lt string gt HMM elcome lt boolean gt 0 1 OFF ON lt string gt the security code must be entered to disable the security RST Value lt boolean gt 1 Query Syntax CALibration SECure STATe Query Parameters N A Query Response 0 1 Description The Calibration Security State enables or disables the calibration security While security is on no stores to the non volatile memory are allowed In order to disable the security state the security code must be supplied If this code is not provided a Missing Parameter error will be returned To enable the security the code does not need to be supplied The security state is enabled by default Calibration commands should only be executed by qualified personnel Changing these values incorrectly can cause the instrument to perform improperly Examples Command Query CAL SEC STAT OFF 16
28. selects the source for the reference oscillator PLL Phase Look Loop EXT Signal from the CLOCK IN OUT must be set as input The default setting is PLL The external clock source connects directly to the pattern RAM address counter and to the DDS chip For waveforms from pattern RAM the output frequency will be Ext_Clock Freq Number_of Samples The standard DAC waveforms are 4096 samples For DDS waveforms sine amp square the last value in the DDS frequency register determines the output frequency Setting the DDS clock if the clock source is NOT External dPhase long Fout 2 32 50MHz While 1 loop til Mclk is lt 5OMHz Mclk Fout 2432 double dPhase if Mclk lt 50 0e6 break else dPhase 1 At this point a long integer dPhase exists that yields a DDS clock lt 50 MHz dPhase is placed in to the DDS Frequency register 32 bits Now Fout dPhase Mclk 2432 If at this point the Reference Oscillator is switched to EXT Fout dPhase Fext_ref 2 32 Examples Command Query Response Description ROSC SOUR EXT Sets the source to the CLOCK IN OUT input ROSC SOUR EXT Indicates that the source is set to the CLOCK IN OUT input Related Commands SOURce CLOCk CONFigure 84 VM3640A Command Dictionary www vtiinstruments com SOURce SWEep COUNt Purpose Sets the number of sweeps enabled per trigger event Type Setting Command Synta
29. true The Status Questionable Enable query reports the contents of the Questionable Data Signal Register s enable register then clears the register contents and enters the value into the computer Command Query STAT QUES ENAB 64 STAT QUES ENAB 64 N A 110 VM3640A Command Dictionary www vtiinstruments com STATus QUEStionable EVENt Purpose Queries the Questionable Status Event Register Type Required SCPI command Command Syntax N A Ao N A RST Value N A Query Syntax STATus QUEStionable EVENt Query Parameters N A Query Response Decimal number Description The query reports the bits set in the event register of the Questionable Data Signal register This command reads the event register then clears all bits in the event register and enters the value into the computer Drevin ay Command Query Response Description STAT QUES 0 Related Commands N A VM3640A Command Dictionary 111 VTI Instruments Corp SYSTem ERRor Purpose Queries the Error Queue Type Required SCPI command Command Syntax N A Command Parameter N A RST Value Clears queue Query Syntax SYSTem ERRor Query Parameters N A Query Response ASCII string Description The System Error query is used to retrieve error messages from the error queue The error queue will maintain two error messages If additional errors occur the queue will
30. vtiinstruments com TABLE 4 3 REQUIRED SCPI COMMANDS Command Description RST Reset Value STATus OPERation CONDition Queries the Operation Status Condition N A Register STATus OPERation ENABle Sets the Operation Status Enable N A Register STATus OPERation EVENt Queries the Operation Status Event N A Register STATus PRESet Presets the Status Register N A STATus QUEStionable CONDition Queries the Questionable Status N A Condition Register STATus QUEStionable ENABle Sets the Questionable Status Enable N A Register STATus QUEStionable EVENt Queries the Questionable Status Event N A Register SYSTem ERRor Queries the Error Queue X Clears queue SYSTem VERSion Queries which version of the SCPI N A standard the module complies with VM3640A Command Dictionary 27 VTI Instruments Corp COMMAND DICTIONARY The remainder of this section is devoted to the actual command dictionary Each command is fully described on its own page In defining how each command is used the following items are described Purpose Type Command Syntax Command Parameters Reset Value Query Syntax Query Parameters Query Response Description Examples Related Commands Describes the purpose of the command Describes the type of command such as an event or setting Details the exact command format Describes the parameters sent with the command and their legal ra
31. waveforms 10 Vpp into 50 2 Output impedance 50 Q Resolution 3 5 digits Accuracy 1 OUTPUT OFFSET Range Voltage dc 3 V to 3 V offset amplitude cannot exceed 6 V Pulsed de 3 V to 3 V offset amplitude 2 cannot exceed 3 5 V Sine square 3 V to 3 V offset amplitude cannot exceed 6 V All other waveforms 3 V to 3 V offset amplitude cannot exceed 6 V 16 VM3640A Introduction www vtiinstruments com SECTION 2 PREPARATION FOR USE INSTALLATION When the VM3640A is unpacked from its shipping carton the contents should include the following items 1 VM3640A VXIbus module 1 VM3640A Arbitrary Waveform Generator User s Manual this manual All components should be immediately inspected for damage upon receipt of the unit Once the VM3640A is assessed to be in good condition it may be installed into an appropriate C size or D size VXIbus chassis in any slot other than slot zero The chassis should be checked to ensure that it is capable of providing adequate power and cooling for the VM3640A Once the chassis is found adequate the VM3640A s logical address and the backplane jumpers of the chassis should be configured before the VM3640A s installation CALCULATING SYSTEM POWER AND COOLING REQUIREMENTS It is imperative that the chassis provide adequate power and cooling for this module Referring to the chassis user s manual confirm that the power budget for the system the c
32. AMPLitude Query Parameters N A Query Response Returns the set value of the lt numeric_value gt parameter for this command Description The Source Voltage Level Amplitude command sets the peak to peak amplitude value of the signal output voltage The default setting is 1 0 Examples Command Query Response Description VOLT 2 5 Sets the voltage amplitude to 2 5 Vp p VOLT 2 5 Verifies that the voltage amplitude is set to Vp p Related Commands SOURce VOLTage LEVel OFFSet VM3640A Command Dictionary 101 VTI Instruments Corp SOURce VOLTage LEVel OFFSet Purpose Sets the output voltage offset Type Setting Command Syntax SOURce VOLTage LEVel OFFSet lt numeric_value gt ANI lt numeric_value gt Ranges stated below Range dc Voltage 3 V to 3 V Offset Amplitude cannot exceed 6 V Pulsed dc 3 V to 3 V Offset Amplitude 2 cannot exceed 3 5 V Sine Square 3 V to 3 V Offset Amplitude cannot exceed 6 V All other waveforms 3 V to 3 V Offset Amplitude cannot exceed 6 V RST Value 0 0 Query Syntax SOURce VOLTage LEVel OFFSet Query Parameters N A Query Response Returns the set value of the lt numeric_value gt parameter for this command Description The Source Voltage Level Offset command controls the level of the output offset voltage The default setting is 0 0 Examples Command Que
33. BURSt COUNt SOURce BURSt PHASe SOURce BURSt STATe VM3640A Command Dictionary 65 VTI Instruments Corp SOURce BURSt STATe Purpose Enables or disables burst mode Type Setting Command Syntax SOURce BURSt STATe lt boolean gt AIRE lt boolean gt 0 1 OFF ON RST Value 0 Query Syntax SOURce BURSt STATe Query Parameters N A Query Response OI Description The Source Burst State command enables or disables the burst mode The default setting is disabled Examples Command Query BURS 1 BURS Enables burst mode 1 Indicates that burst mode is enabled Related Commands SOURce BURSt COUNt SOURce BURSt PHASe SOURce BURSt RATE 66 VM3640A Command Dictionary www vtiinstruments com SOURce CLOCk CONFigure Purpose Sets front panel clock as an input or output Type Setting Command Syntax SOURce CLOCk CONFigure lt clock_dir gt ROT WWII lt Clock dir gt INPut OUTPut RST Value INP Query Syntax SOURce CLOCk CONFigure Query Parameters N A Query Response INP OUTPut Description The Source Clock Configure command configures the front panel CLOCK IN OUT as an input or output The default setting is INPut Examples Command Query CLOC CONF OUTP Sets the front panel CLOCK IN OUT connector as an output OUTP Indicates that th
34. DE lt sync_mode gt OnE mM NIT lt sync_mode gt MAST SLAV RST Value SLAV Query Syntax SOURce SYNC MODE Query Parameters N A Query Response MAST SLAV Description The Source Sync Mode command is used to configure each module as a master or slave when configuring two or more VM3640A modules to sync simultaneously The default setting is master Examples Command Query SYNC MODE SLAV SYNC MODE Response Description Configures the module to be a slave SLAV Indicates that the module is configured as a slave Related Commands SOURce SYNC STATEe 94 VM3640A Command Dictionary www vtiinstruments com SOURce SYNC STATe Purpose Enables or disables simultaneous sync mode Type Setting Command Syntax SOURce SYNC STATe lt boolean gt HMM ere lt boolean gt 0 1 OFF ON RST Value 0 Query Syntax SOURce SYNC STATe Query Parameters N A Query Response OI Description The Source Sync State command enables or disables sync mode when configuring two or more VM3640A modules to sync simultaneously The default setting is disabled Note that each module must first be configured as a master or slave before using this function Examples Command Query SYNC 1 SYNC Response Description Enables simultaneous synchronize mode 1 Indicates that simultaneous synchronize mode is enabled
35. E MARK er POS Momia we aR dEl LE A ea CHE 78 SOURCE MAR Ker SOURCE dn on cnenie ie Rohde eae RG one Ree eens 79 LOlReelMAKkertST AUel neess Sech SNER E Seege EES 80 SOURce OUTPut FILTer LPASs STA Te senin eea o ea a e aea S 81 SOURce OUTPuti FIL Ter L PASS TY P6 eeh enke e ee 82 SOURGe OUTPutl STA Tol See oie hohe hata BEES 83 SOURCE ROSGC SOURGE nck 48 wan ce sti BORGER Wad Seege EENS 84 SOURCe S W Eep COUN 6 4 c6i8 ek est cece c cen one Fc et eege Ree 85 SOURGe SWEe p DiRection cca e oe nin BoRG AG aid 86 SOURCE S W EepsMO DE a 658 Seas nost aces chante ve EE lasagne n 87 SOURCE S WEcp POINfS ica AS 88 SOURGe SWEep SPA Cine EE 89 SOURCE S WE TAR il e dee ole o fl e 90 SOURCGe SWEep STOR cd e de o o liado 91 SOURCE S WEE STA le O 92 SOURce S WEep TIME 0 E E pacido 93 SOUR ce SY NE MODE o e A e e o ado 94 SOURCE SY NCESTA KEEN 95 VM3640A Preface www vtiinstruments com SOURCE TRIG Ser E EE 96 SOURCE TRIGgEer MODE ace h Seed Seeusdetedt de adi avodart dls 97 SOURcE TRIGgEer FEHLEN eebe li do wanes tds 98 SOURCE TRIG S Gre RATES eege Deech Sen Eed Een eege ege 99 SOURce RIGA oa EA ini tasas ed 100 ISOURce VO Tage LEVell AMPl made 101 SOURce VOLTage LEVel OFFSet cccececsseesseeseesseeeceeecesccnseceaeceaecaaecaeecaeesaeeneesseesaeenseeeaeeaeeaecaeeneeenes 102 HESS PANTS EI RE 103 TES RRA ME A deh olla hit ted os 104 REQUIRED SCPLCOMMANDS soso notte Ee
36. EXAMPLES The VMIP may contain three separate instruments and will allocate logical addresses as required by the VXIbus specification revisions 1 3 and 1 4 The logical address of the instrument is set on the VMIP carrier The VMIP logical addresses must be set to an even multiple of 4 unless dynamic addressing is used Switch positions 1 and 2 must always be set to the OFF position Therefore only addresses of 4 8 12 16 252 are allowed The address switch should be set for one of these legal addresses and the address for the second instrument the instrument in the center position will automatically be set to the switch set address plus one while the third instrument the instrument in the lowest position will automatically be set to the switch set address plus two If dynamic address configuration is desired the address switch should be set for a value of 255 All switches set to ON Upon power up the slot 0 resource manager will assign the first available logical addresses to each instrument in the VMIP module If dynamic address configuration is desired the address switch should be set for a value of 255 All switches set to ON Upon power up the slot 0 resource manager will assign the first available logical addresses to each instrument in the VMIP module 18 VM3640A Preparation for Use www vtiinstruments com SECTION 3 PROGRAMMING INTRODUCTION The VM3640A is a VXIbus message based device whose comma
37. Eep STOP SOURce SWEep STATe SOURce SWEep TIME 90 VM3640A Command Dictionary www vtiinstruments com SOURce SWEep STOP Purpose Sets the ending sweep frequency Type Setting Command Syntax SOURce SWEep STOP lt freq gt ARNES lt freq gt le 1 to 2e7 RST Value 2000 2e3 Query Syntax SOURce SWEep STOP Query Parameters N A Query Response Returns the set value of the lt freq gt parameter for this command Description The Source Sweep Stop command sets the sweep stop frequency The default is set to 2000 2e3 Examples Command Query Response Description SWE STOP 3000 Sets the sweep stop frequency to 3000 Hz Related Commands SOURce SWEep COUNt SOURce SWEep DIRection SOURce SWEep MODE SOURce SWEep POINts SOURce SWEep SPACing SOURce SWEep STARt SOURce SWEep STATe SOURce SWEep TIME VM3640A Command Dictionary VTI Instruments Corp SOURce SWEep STATe Purpose Enables or disables the sweep function Type Setting Command Syntax SOURce SWEep STATe lt boolean gt OTTO EREM OESCH lt boolean gt 0 1 OFF ON RST Value 0 Query Syntax SOURce SWEep STATe Query Parameters N A Query Response OI Description The Source Sweep State command enables or disables the sweep mode The default setting is disabled Sweep Mode is only valid for sine and square waveforms
38. Larity SOURce TRIGger RATE SOURce TRIGger TTLT VM3640A Command Dictionary 97 VTI Instruments Corp SOURce TRIGger POLarity Purpose Selects the polarity of the trigger signal Type Setting Command Syntax SOURce TRIGger POLarity lt trig_pol gt AIRES lt trig pol gt POSitive NEGative RST Value POS Query Syntax SOURce TRIGger POLarity Query Parameters N A Query Response POS NEG Description The Source Trigger Polarity command set the trigger polarity to positive or negative The default setting is positive Examples Command Query Response Description TRIG POL NEG Sets the trigger negative Related Commands SOURce TRIGger GATE SOURce TRIGger MODE SOURce TRIGger RATE SOURce TRIGger TTLT 98 VM3640A Command Dictionary www vtiinstruments com SOURce TRIGger RATE Purpose Sets the period for the internal trigger Type Setting Command Syntax SOURce TRIGger RATE lt rate gt HMMM CITE lt rate gt 0 1 to 100000 RST Value 100 Query Syntax SOURce TRIGger RATE Query Parameters N A Query Response Returns the set value of the lt rate gt parameter for this command Description The Source Trigger Rate command sets the period for the internal trigger The default setting is 100 Examples Command Query Response Description TRIG RATE 10 Sets the internal trigger
39. SMB female connectors for instrument interface The connectors are defined from top to bottom as follows Clock In Out The Clock In Out connector serves as both an input and an output and provides access to the reference clock of the instrument If the internal reference source is used it can be accessed using the SOURce CLOCk CONFigure command If an externally produced signal is to be used as a reference source the source must be selected using the SOURce TRIGger MODE command Trigger Input The Trigger Input connector is used to synchronize the VM3640A with other instruments To select an external trigger source use the SOURce TRIGger MODE command Marker Output The Marker Output connector is used to synchronize to the output of the generator The marker can be enabled or disabled using the SOURce MARKer STATe command The output is about 5 V and can source or sink 40 mA The SOURce MARKer SOURce command can be used to select the marker source Modulation Input This connector input is used during amplitude modulation frequency shift keying and phase shift keying During amplitude modulation the modulation input is added to the output signal In frequency and phase shift keying the modulation input acts as the keying signal Horizontal Sweep Output This output is only available in sweep mode The horizontal sweep output ramps from 0 V at the beginning of a sweep cycle to 5 V at the end of a sw
40. TYPe Selects the output filter type X ELL SOURce OUTPut STATe Enables or disables the MAIN OUT x 0 output SOURce ROSC SOURce Selects the source for the reference x PLL oscillator SOURce SWEep COUNt Sets the number of sweeps enabled per x 0 trigger event SOURce SWEep DIRection Sets the sweep direction X UP SOURce SWEep MODE Sets the sweep mode X CRES SOURce SWEep POINts Sets the sweep points X 100 SOURce SWEep SPACing Sets the sweep spacing X LIN SOURce SWEep STARt Sets the starting sweep frequency X 1000 Hz SOURce SWEep STOP Sets the ending sweep frequency X 2000 Hz SOURce SWEep STATe Enables or disables the sweep function X 0 SOURce SWEep TIME Sets the sweep duration time X 0 100 s SOURce SYNC MODE Selects the sync mode X SLAV SOURce SYNC STATe Enables disables the simultaneous x 0 synchronization mode SOURce TRIGger GATE Selects gate mode X 0 SOURce TRIGger MODE Selects the trigger source X IMM SOURce TRIGger POLarity SEN the polarity of the trigger x POS signa SOURce TRIGger RATE Sets the period for the internal trigger x 100 Hz SOURce TRIGger TTLT Selects the backplane trigger line x 0 SOURce VOLTage LEVel AMPLitude Sets the signal output voltage X 1 0 Vp p SOURce VOLTage LEVel OFFSet Sets the output voltage offset X 0 0 TEST ALL Performs a non destructive test of the N A hardware TEST RAM Performs a destructive test of the Trace N A Memory 26 VM3640A Command Dictionary www
41. URce SWEep COUNt SOURce SWEep DIRection SOURce SWEep POINts SOURce SWEep SPACing SOURce SWEep STARt SOURce SWEep STOP SOURce SWEep STATe SOURce SWEep TIME VM3640A Command Dictionary 87 VTI Instruments Corp SOURce SWEep POINts Purpose Sets the sweep points Type Setting Command Syntax SOURce SWEep POINts lt swp_pts gt ANNIE CH lt swp_pts gt 2 to 4096 RST Value 100 Query Syntax SOURce SWEep POINts Query Parameters N A Query Response Returns the set value of the lt swp_pts gt parameter Description The Source Sweep Points command sets the number of discrete frequency steps between the sweep start and sweep stop frequencies Sweep Time Sweep Points must be gt 500 ys Examples Command Query Response Description SWE POIN 10 Sets the sweep points to 10 Related Commands SOURce SWEep COUNt SOURce SWEep DIRection SOURce SWEep MODE SOURce SWEep SPACing SOURce SWEep STARt SOURce SWEep STOP SOURce SWEep STATe SOURce SWEep TIME 88 VM3640A Command Dictionary www vtiinstruments com SOURce SWEep SPACing Purpose Sets the sweep spacing Type Setting Command Syntax SOURce SWEep SPACing lt sweep_space gt BR OEB NIT lt sweep_space gt LINear LOGarithmic RST Value LIN Query Syntax SOURce SWEep SPACing Query Parameters N A Query Response LIN LOG
42. VM3640 CAL SEC STAT 1 CAL SEC STAT Response Description Disables calibration security Turns the calibration security back on 1 Indicates that calibration security is enabled Related Commands CALibration SECure CODE CALibration STORe VM3640A Command Dictionary 55 VTI Instruments Corp CALibration STATe Purpose Enables or disables corrections using calibration data Type Setting Command Syntax CALibration STATe lt boolean gt ANNIE eN lt boolean gt 0 1 OFF ON RST Value 1 Query Syntax CALibration STATe Query Parameters N A Query Response ON Description The Calibration State command enables or disables corrections that were stored from the calibration data If the Calibration State is enabled it will allow corrections of the output amplitude and offset voltage levels that are stored in non volatile memory If the Calibration State function is disabled then the default corrections are used Calibration commands should only be executed by qualified personnel Changing these values incorrectly can cause the instrument to perform improperly Examples Command Query CAL STAT ON CAL STAT Response Description Enables corrections using the calibration data 1 Indicates that calibration data correction has been enabled Related Commands CALibration SECure CODE CALibration SECure STATe CALib
43. alue for the square wave amplitude correction Related Commands CALibration DATA DUTY CALibration DATA SQUare OFFSet OFFSet CALibration SECure CODE CALibration SECure STATe CALibration STORe VM3640A Command Dictionary 49 VTI Instruments Corp CALibration DATA SQLO Purpose Set the negative limit of the square wave output prior to the gain stage Type Setting Command Syntax CALibration DATA SQLO lt value gt ANO lt value gt number RST Value N A Query Syntax CALibration DATA SQLO Query Parameters N A Query Response Returns the set value of the lt value gt parameter for this command Description Used to calibrate the negative peak of the square wave s amplitude to the same as the sine wave at a given gain setting personnel Changing these values incorrectly can cause the instrument to perform improperly 1 Calibration commands should only be executed by qualified Examples Command Query CAL DATA SQLO 5 CAL DATA SQLO Response Description Sets the square wave amplitude to 5 H 5 Returns the set value for the square wave amplitude correction Related Commands CALibration DATA DUTY CALibration DATA SQUare OFFSet OFFSet CALibration SECure CODE CALibration SECure STATe CALibration STORe 50 VM3640A Command Dictionary www vtiinstruments com CALibration DATA SQUare OFFSet OFFSet
44. ay Command Query Response Description STAT PRES Related Commands N A 108 VM3640A Command Dictionary www vtiinstruments com STATus QUEStionable CONDition Purpose Queries the Questionable Status Condition Register Type Required SCPI command Command Syntax N A Ao N A RST Value N A Query Syntax STATus QUEStionable CONDition Query Parameters N A Query Response 0 Description The Questionable Status Condition Register query is provided for SCPI compliance only The VM3640A does not alter any bits in this register and a query always reports a0 Examples Command Query Response Description STAT QUES COND 0 Related Commands N A VM3640A Command Dictionary 109 VTI Instruments Corp STATus QUEStionable ENABle Purpose Type Command Syntax Command Parameters RST Value Query Syntax Query Parameters Query Response Description Kxamples Related Commands Sets the Questionable Status Enable Register Required SCPI command STATus QUEStionable ENABle lt NRf gt lt NRf gt numeric ASCII value from 0 to 32767 lt NRf gt must be supplied STATus QUEStionable ENABle N A lt NRf gt Numeric ASCII value from 0 to 32767 The command sets the bits in the Questionable Data Signal Register s enable register to be reported to the summary bit sets Status Byte Register bit 3 to
45. can cause the instrument to perform improperly Examples Response Description CAL DATA AFC 3 17 1 1 Sets point 3 to 17 MHz with a gain of 1 1 CAL DATA AFC 5 18126524 216 1 709 Queries the frequency and gain setting at point five and returns a value 18 126 MHz and a gain of 1 709 Related Commands CALibration SECure CODE CALibration SECure STATe CALibration STORe VM3640A Command Dictionary 43 VTI Instruments Corp CALibration DATA AMPLitude GAIN Purpose Directly sets the amplitude gain correction Type Setting Command Syntax CALibration DATA AMPLitude GAIN lt numeric_value gt AUREA lt numeric_value gt numeric value from 0 to 1000 RST Value N A Query Syntax CALibration DATA AMPLitude GAIN Query Parameters N A Query Response Returns the value of the set lt numeric_value gt parameter for this command Description The Calibration Data Amplitude Gain command directly sets the amplitude gain correction This setting is usually calculated by calibration Calibration commands should only be executed by qualified personnel Changing these values incorrectly can cause the instrument to perform improperly Examples Command Query CAL DATA AMPL GAIN 2 5 CAL DATA AMPL Response Description Sets the amplitude gain correction to 2 5 2 5 Returns the value of the amplitude
46. d 488 2 for more information on these commands VM3640A Command Dictionary 23 VTI Instruments Corp TABLE 4 1 IEEE 488 2 COMMON COMMANDS Command Description RST Reset Value CLS Clears the Status Register N A ESE Sets the Standard Event Status Register NA ESR Query the Standard Event Status Register _ N A IDN Query the module identification string NA OPC Set the OPC bit in the Event Status Register N A RST Resets the module to a known state NA SRE Set the service request enable register LL N A STB Query the Status Byte Register LI N A TRG Causesatriggereventtooccur N A TST Starts and reports a self test procedure N A WAI Halts execution and queries N A 24 VM3640A Command Dictionary www vtiinstruments com TABLE 4 2 INSTRUMENT SPECIFIC SCPI COMMANDS Command Description RST Reset Value AM STATe Enables or disables amplitude x 0 modulation CALibration COUNt Tracks the number of times calibration has been performed CALibration DATA Sets the calibration constants CALibration DATA AFCorrection Sets the amplitude gain correction CALibration DATA AMPLitude GAIN Directly sets the amplitude gain correction CALibration DATA AMPLitude OFFSet Directly sets the offset of the amplitude control CALibration DATA DUTY Calibration for square wave duty cycle CALibration DATA OFFSet GAIN
47. d Commands SOURce SWEep COUNt SOURce SWEep MODE SOURce SWEep POINts SOURce SWEep SPACing SOURce SWEep STARt SOURce SWEep STOP SOURce SWEep STATe SOURce SWEep TIME 86 VM3640A Command Dictionary www vtiinstruments com SOURce SWEep MODE Purpose Type Command Syntax Command Parameters RST Value Query Syntax Query Parameters Query Response Description Examples Related Commands Sets the sweep mode Setting SOURce SWEep MODE lt sweep_mode gt lt sweep_mode gt CRESet CREVerse CRESet SOURce SWEep MODE N A CRES CREV The Source Sweep Mode command sets the sweep mode CRESet Sweeps from the starting sweep frequency to the stop sweep frequency then returns back to the starting sweep frequency This is a continuous loop CREVerse Sweeps from the starting sweep frequency to the stop sweep frequency then sweeps back to the start sweep frequency This is a continuous loop Horizontal Sweep Output is available only while in sweep mode The horizontal sweep output ramps from 0 V at the beginning of a sweep cycle to 5 V at the end of a sweep cycle It is intended to provide the user with a representation of the progress through the sweep The slope of the horizontal sweep output is linear regardless of the sweep mode selected Command Que Response Description SWE MODE CREV Sets the sweep mode to creverse SO
48. d dee een eege EE 105 STATusObbRanon CON Don 105 STATusObbbRanon ENADBle noc nn nonnnnnnnnonnnnnonnnnnnnncnnnnrnnnnnnnnnnnnncnnnnrnnnnnannnos 106 STATus OPERation EVENt ccccesccssccesecsseeeeeseeeseeseeesccesecnsecaecnaecnaecaaecseeeneeeaeeeeeecssecnaeeeasenaecaecnaeeneenes 107 STATUS PRES EE 108 STATusOUE nponable CONDmon nono noc nnnrnnnncnnnrnn non nnnrnnn nn nn nrnnnncannnens 109 STATus QUEStionable ENAB E smc leo EEN 110 STATus QUEStionable EVEN Ei adi s 111 SYSTEM ER EE 112 SYSTem VERSION A A dido 113 ON 114 VM3640A Preface 5 VTI Instruments Corp CERTIFICATION VXI Technology Inc VTI certifies that this product met its published specifications at the time of shipment from the factory VTI further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology formerly National Bureau of Standards to the extent allowed by that organization s calibration facility and to the calibration facilities of other International Standards Organization members WARRANTY The product referred to herein is warranted against defects in material and workmanship for a period of three years from the receipt date of the product at customer s facility The sole and exclusive remedy for breach of any warranty concerning these goods shall be repair or replacement of defective parts or a refund of the purchase price to be determined at the option of VTI F
49. de voltage output The default setting is 1 V dc Examples Command Query FUNC DC VOLT 2 5 FUNC DC VOLT Response Description Sets the output voltage to 2 5 V dc 2 5 Indicates that the output voltage is set to 2 5 V dc Related Commands SOURce VOLTage LEVel AMPLitude SOURce VOLTage LEVel OFFSet VM3640A Command Dictionary 69 VTI Instruments Corp SOURce FUNCtion PULSe WIDTh Purpose Sets the pulse width Type Setting Command Syntax SOURce FUNCtion PULSe WIDTh lt pulse_width gt lt pulse_freq gt new NIT lt pulse width gt 100e 9 to 1 0 lt pulse_freq gt 0 1 to 1 0e6 RST Value lt pulse_width gt 1 ys lt pulse_freq gt 1000 Hz Query Syntax SOURce FUNCtion PULSe WIDTh Query Parameters N A Query Response Returns the set value of the lt pulse_width gt parameter for this command Description The Source Function Pulse Width command sets the pulse width of the output waveform The default setting is 1 us Pulse width must be gt 0 001 Fout Pulse width must be lt 0 999 Fout For short pulses at low repetition rates e g 1 us 1 Hz 1 FREQ 1083 Sets the frequency to 10 kHz 2 FUNC PULSE WIDTH le 6 Sets the pulse width to 1 us 3 TRIG MODE INT Sets the trigger to internal clock 4 TRIG RATE 1 Sets the repetition rate to 1 Hz The optional pulse frequency parameter adds another route to set the fr
50. e CLOCK IN OUT connector is set as an output CLOC CONF Related Commandes SOURce ROSC SOURce VM3640A Command Dictionary 67 VTI Instruments Corp SOURce FREQuency CW Purpose Controls the frequency of the output signal Type Setting Command Syntax SOURce FREQuency CW lt numeric_value gt AIRES lt numeric_value gt 0 1 to 20e6 for sine and square waves lt numeric_value gt 0 1 to 1 0e6 for all other waveforms lt numeric_value gt 0 1 to 1 0e6 for all waveforms in Burst Mode RST Value 1000 Query Syntax SOURce FREQuency CW Query Parameters N A Query Response Returns the set value of the lt numeric_value gt parameter for this command Description The Source Frequency CW command controls the frequency of the output signal Examples Command Que Response Description FREQ 1 0 Related Commands SOURce FUNCtion SHAPe 68 VM3640A Command Dictionary www vtiinstruments com SOURce FUNCtion DC VOLTage Purpose Sets the de output voltage Type Setting Command Syntax SOURce FUNCtion DC VOLTage lt dc_volts gt OnE GM NIESEN lt dc volts gt number from 6 to 6 RST Value 1 Query Syntax SOURce FUNCtion DC VOLTage Query Parameters N A Query Response Returns the set value of the lt dc_volts gt parameter Description The Source Function de Voltage command sets the
51. e Setting Command Syntax SOURce BURSt PHASe lt phase gt AIN lt phase gt value between 0 and 359 degrees RST Value 0 Query Syntax SOURce BURSt PHASe Query Parameters N A Query Response Returns the set value of the lt phase gt parameter for this command Description The Source Burst Phase command set the starting phase for the burst The default setting is 0 degrees Examples Command Query BURS PHAS 30 BURS PHAS Sets the burst starting phase to 30 degrees 30 Returns the set starting phase value Related Commands SOURce BURSt COUNt SOURce BURSt RATE SOURce BURSt STATe 64 VM3640A Command Dictionary www vtiinstruments com SOURce BURSt RATE Purpose Sets the burst repetition rate Type Setting Command Syntax SOURce BURSt RATE lt rate gt OHNE REI OCH lt rate gt value from 0 10 to 100000 RST Value 100 Query Syntax SOURce BURSt RATE Query Parameters N A Query Response Returns the set value of the lt rate gt parameter for this command Description The Source Burst Rate command sets the burst repetition or frequency of the burst The default value is 10 Hz Note Burst Rate must lt Frequency Setting Examples Command Query BURS RATE 10 BURS RATE Sets the burst rate to 10 Hz 10 Indicates that the burst rate is set to 10 Hz Related Commands SOURce
52. ecaeecaeeeaeeeeeeseenseenseenseeaecnaeenaeeeeenes 22 DECTION EE 23 COMMAND DICTIONARY EE 23 A A O 23 Alphabetical Command Listin tits eege 23 Command Dicta a ds dls dies a a ee does 28 COMMON1EEE 498 2 COMMANDS sees eessen dee geen dee eege dees iia tests 30 BOTS EE 30 wl DEE 31 e KEE 32 DON a de EE 33 EIS EE 34 LEE 35 A O O EE 36 se E EE 37 ODER EE 38 el KEE 39 el HE A0 VM3640A Preface 3 VTI Instruments Corp INSTRUMENT SPECIFIC SCPI COMMANDS ia ere duassbbeexenstaetwanseh nkeeee 41 AMESTA Tela dde det dsc de leva od de dicto de cl do Ee dd cl de co E 41 CAEbrati n COUNtA aut o a e AE E E Sain 42 CALibration DATA AFC omrecton nooo nn nnnnnnon non nnnrnn nn cnn nrnnn nn nn nrnnn nn narran nncinnnios 43 CALibration DATA AMPLitude OAINT nono nonn ron rro n rn nro rro n nro nr nn nr nn nrannrnnnnns 44 CALibration DATA AMPLitude OFFSet coococonoccooccoononnnonnnonnnonoc nono nono nconncon nono ronn rn nr nan r nn n rn rro n rro nr nn rr nn nrannrnn nan 45 CALibration DATA DUTY cc cccccccscccssecssscecsseceseeecsseceeeeecsseceeeeecsaeceeeecsaeceeeecsaecseeeecsaeceeeecsueseeeeecsaeeeeeeess 46 CALibration DATA J OFESet OGAINT ocn nn ncon noc nnnconnnconnnrnnnncnnnrnnnncannncnnnncnnnnnos 47 CALibration DATA OFFSet OFFSet cccccccccssscesscecssecseececsseceeseecsseceeeecsaeceeeecsaeceeeeecsseceeeecsaeceeeeeesseeeeeeees 48 CAlibranonl DATATSOHT nn nono nron nn no nnnnnn nn cnn nron nn cnn n
53. eep cycle It is intended to provide the user with a representation of the progress through the sweep The slope of the horizontal sweep output is linear regardless of the sweep mode selected Main Output This is the main output from the function generator VM3640A Introduction 15 VTI Instruments Corp VM3640A GENERAL SPECIFICATIONS GENERAL SPECIFICATIONS CONNECTORS six male SMB WAVEFORMS Built In sine square triangle noise pulse sinc cardiac de positive negative ramp exponential rise fall LENGTH Standard Patterns User Patterns 4 k 4096 samples minimum of 8 samples maximum limited to available memory 122 880 samples maximum Up to sixteen user defined patterns may be defined depending on the amount of pattern RAM RESOLUTION 12 bits including sign SAMPLE RATE 50 MSamples s FREQUENCY Sine 0 1 Hz to 20 MHz total harmonic distortion on sine wave no greater than 0 5 Square 0 1 Hz to 20 MHz rise fall time no greater than 20 ns with maximum aberrations lt 5 All Other Waveforms 0 1 Hz to 1 MHz Resolution 8 digits limited by 0 1 Hz for sine square 5 digits for all other waveforms Accuracy same as VXICLK10 0 01 typical can be improved by using an external reference AMPLITUDE Range Voltage dc Into 50 Q 6 V to 6 V Into gt 200 Q 10 V to 10 V Pulsed dc 6 Vp to 6 Vp Sine square 10 Vpp into 50 Q All other
54. equency in addition to the SOURce FREQuency CW command Examples Command Que FUNC PULS WIDT 30e 6 FUNC PULS WIDT FUNC PULS WIDT 30e 6 10e3 Sets the pulse width to 30 us 30 Indicates that the pulse width is 30 us Sets the pulse width to 30 us and the pulse frequency to 10 kHz Related Commands SOURce FREQuency CW SOURce FUNCtion SHAPe 70 VM3640A Command Dictionary www vtiinstruments com SOURce FUNCtion SHAPe Purpose Selects the output waveform shape Type Setting Command Syntax SOURce FUNCtion SHAPe lt shape gt ANI re lt shape gt SINusoid SQUare TRlangle PRNoise PRAMp NRAMp EXPRise EXPFall CARDiac DC PULSe SINC RST Value SIN Query Syntax SOURce FUNCtion SHAPe Query Parameters N A Query Response Returns the set value of the lt shape gt parameter Description The Source Function Shape command selects the shape of the output waveform The default setting is a sinusoid waveform Examples Command Query FUNC SQU FUNC Response Description Sets the output waveform shape to a square wave SQU Indicates that the waveform shape is a square wave Related Commands SOURce FUNCtion PULSe WIDTh SOURce FREQuency CW VM3640A Command Dictionary 71 VTI Instruments Corp SOURce FUNCtion SQUare DUTY Purpose Sets the duty cycle of the square wave
55. function Type Command Command Syntax SOURce FUNCtion SQUare DUTY lt duty_cycle gt HMM WEE CH lt duty_cycle gt 20 0 to 80 0 RST Value 50 0 Query Syntax SOURce FUNCtion SQUare DUTY Query Parameters N A Query Response Returns the set value of the lt duty_cycle gt parameter Description The Source Function Square Duty command sets the duty cycle of the square wave output The default setting is 50 0 Examples Command Query FUNC SQU 20 FUNC SQU Sets the square wave duty cycle to 20 0 20 0 Indicates that the square wave duty cycle is set to 20 0 Related Commands SOURce FUNCtion SHAPe 72 VM3640A Command Dictionary www vtiinstruments com SOURce FUNCtion USER DIRectory Purpose List the user defined waveforms Type Query Command Syntax N A Ao N A RST Value N A Query Syntax SOURce FUNCtion USER DIRectory Query Parameters N A Query Response Returns the stored user defined waveforms Description The Source Function User Directory query lists the user defined waveforms that have been stored Drevin ay Command Query Response Description FUNC USER DIR Lists the stored user defined waveforms Related Commands SOURce FUNCtion USER NAME VM3640A Command Dictionary VTI Instruments Corp SOURce FUNCtion USER FREE Purpose Queries the amount of
56. gain correction Related Commands CALibration DATA AMPLitude OFFSet CALibration SECure CODE CALibration SECure STATe CALibration STORe 44 VM3640A Command Dictionary www vtiinstruments com CALibration DATA AMPLitude OFFSet Purpose Directly sets the offset of the amplitude control Type Setting Command Syntax CALibration DATA AMPLitude OFFSet lt numeric_value gt New NEITS KC lt numeric_value gt numeric value from 0 to 4095 RST Value N A Query Syntax CALibration DATA AMPLitude OFF Set Query Parameters N A Query Response Returns the set value of the lt numeric_value gt parameter for this command Description The Calibration Data Amplitude Offset command directly sets the offset of the amplitude control This setting is usually calculated by calibration Calibration commands should only be executed by qualified personnel Changing these values incorrectly can cause the instrument to perform improperly Examples Command Query CAL DATA AMPL OFFS 0 CAL DATA AMPL OFFS Response Description Sets the offset to 0 0 Returns the set value for the amplitude offset Related Commands CALibration DATA AMPLitude GAIN CALibration SECure CODE CALibration SECure STATe CALibration STORe VM3640A Command Dictionary 45 VTI Instruments Corp CALibration DATA DUTY Purpose Calibration for square wave
57. hassis and all modules installed therein is not exceeded and that the cooling system can provide adequate airflow at the specified backpressure It should be noted that if the chassis cannot provide adequate power to the module the instrument may not perform to specification or possibly not operate at all In addition if adequate cooling is not provided the reliability of the instrument will be jeopardized and permanent damage may occur Damage found to have occurred due to inadequate cooling would also void the warranty of the module VM3640A Preparation for Use 17 VTI Instruments Corp SETTING THE CHASSIS BACKPLANE JUMPERS Please refer to the chassis user s manual for further details on setting the backplane jumpers SETTING THE LOGICAL ADDRESS The logical address of the VM3640A is set by a single 8 position DIP switch located near the VMIP module s backplane connectors this is the only switch on the module The switch is labeled with positions 1 through 8 and with an ON position A switch pushed toward the ON legend signifies a logic 1 switches pushed away from the ON legend signify a logic 0 The switch located at position 1 is the least significant bit while the switch located at position 8 is the most significant bit See Figure 2 1 for examples of setting the logical address switch 1 1 2 2 3 4 4 8 5 16 NNN 6 32 8 7 64 SET TO 255 8 128 Dynamic FIGURE 2 1 LOGICAL ADDRESS SWITCH SETTING
58. its own Unique Logical Address and its own front panel FAIL and ACCESS indicators The ACC ACCESS LED flashes when read write commands are being sent to the module The FAIL LED glows green to indicate that the board is receiving power This LED glows red when a fail condition has occurred VXI D Technology acc FAL PROGRAMMING The VM3640A is programmed using message based word serial protocol The commands are SCPI and IEEE STD 488 2 compatible VXIplug amp play drivers are also provided to further ease programming CALIBRATION The calibration constants used to correct the data values are stored in non volatile memory and are password protected for security These constants are determined when the instrument is calibrated and can be changed as necessary These constants may also be queried at any time via a word serial query and altered via a word serial command with the password All calibration is done using calibration DACs to adjust the gain and offset of each channel This eliminates the need for removing covers from the unit and allows for automated calibration ACC 00 O 00 2 gt Q O CLOCK IN OUT TRIGGER INPUT MARKER OUTPUT MODULATION INPUT HORZ SWEEPOUT MAIN OUTPUT FIGURE 1 2 FRONT PANEL LAYOUT 14 VM3640A Introduction www vtiinstruments com FRONT PANEL CONNECTORS The VM3640A has six male SMB connector located on the front panel that require
59. n CONDition Purpose Queries the Operation Status Register s condition register Type Required SCPI command Command Syntax N A IWERT IT OG N A RST Value N A Query Syntax STATus OPERation CONDition Query Parameters N A Query Response 0 32 Description Reports the bits set in the Operation Status Register s condition register Returns a decimal number of 0 no bits set or 32 bit 5 set Examples Command Que STAT OPER COND 0 Indicates that no bits are set in the Operation Status register Related Commands STATus OPERation ENABle STATus OPERation EVENt VM3640A Command Dictionary 105 VTI Instruments Corp STATus OPERation ENABle Purpose Type Command Syntax Command Parameters RST Value Query Syntax Query Parameters Query Response Description Examples Related Commands Sets the Operation Status Register s enable register Required SCPI command STATus OPERation ENABle lt NRf gt lt NRf gt numeric ASCII value from 0 to 32767 lt NRf gt must be specified STATus OPERation ENABle N A lt NRf gt Numeric ASCII value from 0 to 32767 This command enables bits in the Operation Status Register s enable register to report to the summary bit sets Status Bytes register bit 7 to true The query reports the bits enabled in the Operation Status Registe
60. nd set is compliant with the Standard Commands for Programmable Instruments SCPI programming language All module commands are sent over the VXIbus backplane to the module Commands may be in upper lower or mixed case All numbers are sent in ASCII decimal unless otherwise noted The SCPI programming language is a tree structured language based on IEEE STD 488 2 Specifications It utilizes the IEEE STD 488 2 Standard commands and the device dependent commands are structured to allow multiple branches off the same trunk to be used without repeating the trunk To use this facility terminate each branch with a semicolon For example OFFSet GAIN and OFFSet OFFSet are both branches off the CALibration trunk and can be combined as follows CALibration OFFSet GAIN lt value gt OFFSet lt value gt The above command is the same as these two commands CALibration OFFSet GAIN lt value gt CALibration OFFSet OFFSet lt value gt See the Standard Commands for Programmable Instruments SCPI Manual Volume 1 Syntax amp Style Section 6 for more information The SCPI commands in this section are listed in upper and lower case Character case is used to indicate different forms of the same command Keywords can have both a short form and a long form some commands only have one form The short form uses just the keyword characters in uppercase The long form uses the keyword characters in uppercase plus the keyword characters in lowercase Either
61. nd the fourth field is the firmware revision number If a serial number is not supplied the third field is set to 0 zero Examples Command Query Response Description VXI Technology Inc VM3640A 0 1 0 The revision listed here is for reference only the response will always be the current revision of the instrument Related Commands VM3640A Command Dictionary 33 VTI Instruments Corp OPC Purpose Sets the OPC bit in the Event Status Register Type IEEE 488 2 Common Command Command Syntax OPC Command Parameter N A RST Value N A Query Syntax OPC Query Parameters N A Query Response 1 Description The Operation Complete OPC command sets the OPC bit in the Event Status Register when all pending operations have completed The OPC query will return a 1 to the output queue when all pending operations have completed Examples Command Query Response Description Sets the OPC bit in the Event Status Register 1 Returns the value of the Event Status Register Related Commands 34 VM3640A Command Dictionary www vtiinstruments com RST Purpose Resets the module s hardware and software to a known state Type IEEE 488 2 Common Command Command Syntax RST Command Parameter N A RST Value N A Query Syntax N A Query Parameters N A Query Response N A Description The Reset RST command resets the module
62. nge Describes the values assumed when the RST command is sent Details the exact query form of the command Describes the parameters sent with the command and their legal range The default parameter values are assumed the same as in the command form unless described otherwise Describes the format of the query response and the valid range of output Describes in detail what the command does and refers to additional sources Present the proper use of each command and its query when available Lists commands that affect the use of this command or commands that are affected by this command 28 VM3640A Command Dictionary www vtiinstruments com VM3640A Command Dictionary 29 VTI Instruments Corp COMMON IEEE 488 2 COMMANDS CLS Purpose Clears all status and event registers Type IEEE 488 2 Common Command Command Parameters RST Value VA Query Parameters Description This command clears the Status Event Register Operation Status Register and the Questionable Data Signal Register It also clears the OPC flag and clears all queues except the output queue Examples Command Query Response Descriptions CLS Clears all status and event registers Related Commands N A 30 VM3640A Command Dictionary www vtiinstruments com ESE Description The Event Status Enable ESE command is used to set the bits of the Event Status Enable Register
63. on commands should only be executed by qualified personnel Changing these values incorrectly can cause the instrument to perform improperly Examples Command Query CAL DATA OFFS OFFS 5 Response Description Sets the output offset voltage and control offset to 5 5 Returns the set value for the output offset voltage control offset CAL DATA OFFS OFFS Related Commands CALibration DATA OFFSet GAIN CALibration SECure CODE CALibration SECure STATe CALibration STORe 48 VM3640A Command Dictionary www vtiinstruments com CALibration DATA SQHI Purpose Set the positive limit of the square wave output prior to the gain stage Type Setting Command Syntax CALibration DATA SQHI lt value gt ANO lt value gt number RST Value N A Query Syntax CALibration DATA SQHI Query Parameters N A Query Response Returns the set value of the lt value gt parameter for this command Description Used to calibrate the positive peak of the square wave s amplitude to the same as the sine wave at a given gain setting personnel Changing these values incorrectly can cause the instrument to perform improperly 1 Calibration commands should only be executed by qualified Examples Command Query CAL DATA SQHI 5 CAL DATA SQHI Response Description Sets the square wave amplitude to 5 V 5 Returns the set v
64. onal commands until the No Operation Pending message is true Related Commands 40 VM3640A Command Dictionary www vtiinstruments com INSTRUMENT SPECIFIC SCPI COMMANDS AM STATe Purpose Enables or disables amplitude modulation Type Setting Command Syntax AM STATe lt boolean gt Aero lt boolean gt 0 1 OFF ON RST Value 0 Query Syntax AM STATe Query Parameters N A Query Response 0 1 Description If amplitude modulation is enabled the signal present at the modulation input connector is added to the signal generated by the VM3640A Examples Command Que AM 1 AM Enables amplitude modulation input 1 Verifies that the amplitude modulation input is enabled Related Commands FSK STATe PSK STATe VM3640A Command Dictionary 41 VTI Instruments Corp CALibration COUNt Purpose Tracks the number of times calibration has been performed Type Query Command Syntax N A Command Parameter N A RST Value N A Query Syntax CALibration COUNt Query Parameters N A Query Response Numeric value from 0 to 16 777 215 after the maximum value it will wrap to 0 Description The Calibration Count query returns the number of times the CALibration STORe operation has been performed This provides some indication of FLASH prom wear Calibration commands should only be exec
65. or warranty service or repair this product must be returned to a VXI Technology authorized service center The product shall be shipped prepaid to VTI and VTI shall prepay all returns of the product to the buyer However the buyer shall pay all shipping charges duties and taxes for products returned to VTI from another country VTI warrants that its software and firmware designated by VTI for use with a product will execute its programming when properly installed on that product VTI does not however warrant that the operation of the product or software or firmware will be uninterrupted or error free LIMITATION OF WARRANTY The warranty shall not apply to defects resulting from improper or inadequate maintenance by the buyer buyer supplied products or interfacing unauthorized modification or misuse operation outside the environmental specifications for the product or improper site preparation or maintenance VXI Technology Inc shall not be liable for injury to property other than the goods themselves Other than the limited warranty stated above VXI Technology Inc makes no other warranties express or implied with respect to the quality of product beyond the description of the goods on the face of the contract VTI specifically disclaims the implied warranties of merchantability and fitness for a particular purpose RESTRICTED RIGHTS LEGEND Use duplication or disclosure by the Government is subject to restrictions as set forth in s
66. orm data must be transferred in A16 Register Mode FUNC USER 213username 4095 Sets the waveform name to username and sets its size to 4 k Related Commands SOURce FUNCtion USER FREE SOURce FUNCtion USER NAME 76 VM3640A Command Dictionary www vtiinstruments com SOURce MARKer POLarity Purpose Sets the polarity for the output marker Type Setting Command Syntax SOURce MARKer POLarity lt mark_pol gt MeN RR NICI lt mark_pol gt POSitive NEGative RST Value POS Query Syntax SOURce MARKer POLarity Query Parameters N A Query Response POS NEG Description The Source Marker Polarity sets the polarity for the output marker The default setting is positive Examples Command Query SOUR MARK POS NEG Response Description Sets the output marker polarity to negative Related Commands SOURce MARKer POSition SOURce MARKer STATe VM3640A Command Dictionary dd VTI Instruments Corp SOURce MARKer POSition Purpose Sets the marker to a specified point Type Setting Command Syntax SOURce MARKer POSition lt mark_pos gt HMM eN lt mark pos gt 0 to 4095 for standard waveforms 0 to pattern_length 1 for user waveforms If the marker is set to position zero 0 for a standard waveform it will actually be placed at position one 1 This is to avoid having the marker
67. overflow and the subsequent error messages will be lost In the case of an overflow an overflow message will replace the second error message See the SCPI standard Volume 2 Command Reference for details on errors and reporting them Drevin ay Command Query Response Description SYST ERR 350 Queue overflow Related Commands N A 112 VM3640A Command Dictionary www vtiinstruments com SYSTem VERSion Purpose Queries the SCPI version number with which the VM3640A complies Type Required SCPI command Command Syntax N A Command Parameter N A RST Value N A Query Syntax SYSTem VERSion Query Parameters N A Query Response Numeric ASCII value Description The System Version query reports version of the SCPI standard with which the VM3640A complies Drevin ay Command Query Response Description SYST VERS 1994 0 Related Commands N A VM3640A Command Dictionary VTI Instruments Corp INDEX Symbols P R RES yuan tata 25 61 S Security cOd E moen rii aE ere AE 54 A SENSe CORRection IMPedance cccccceesseceeeee 25 62 ISOURoe IBURSCCOUN 25 63 AM STATe DT 25 41 SOURce BURSt PHASe S da B ISOURoe IBURSCRATE ceceeeseeeeseneeseeeteeeeeeaeeees 25 65 SOURce BURSt STATE cee eeeeceeeeseeeeeereeeeeeeees 25 66 I ekulatg ii E ue aa Bis SOURce CLOCk CONFigure
68. period to 10 Related Commands SOURce TRIGger GATE SOURce TRIGger MODE SOURce TRIGger POLarity SOURce TRIGger TTLT VM3640A Command Dictionary VTI Instruments Corp SOURce TRIGger TTLT Purpose Selects the backplane trigger line Type Setting Command Syntax SOURce TRIGger TTLT lt trg_ttlt gt Heelies lt tre ttlt gt 0to 7 RST Value 0 Query Syntax SOURce TRIGger TTLT Query Parameters N A Query Response Returns the set value of the lt trg_ttlt gt parameter Description The Source Trigger TTLT command selects the backplane trigger line The default setting is trigger line 0 Examples Command Query Response Description TRIG TTLT 3 Selects the back plane trigger line 3 Related Commands SOURce TRIGger GATE SOURce TRIGger MODE SOURce TRIGger POLarity SOURce TRIGger RATE 100 VM3640A Command Dictionary www vtiinstruments com SOURce VOLTage LEVel AMPLitude Purpose Sets the signal output peak to peak voltage Type Setting Command Syntax SOURce VOLTage LEVel AMPLitude lt numeric_value gt ANTI lt numeric_value gt Ranges stated below Range dc Voltage 6 V to 6 V into 50 Q 10 V to 10 V into 200 Q Pulseddc 6 Vogax to 6 Vpgax into 50 Q Sine Square 10 Vp into 50 Q All other waveforms 10 Vp p into 50 Q RST Value 1 0 Query Syntax SOURce VOLTage LEVel
69. petition rate X 100 Hz SOURce BURSt STATe Enables or disables burst mode X 0 SOURce CLOCk CONFigure Sets front panel clock as an input or x INP output SOURce FREQuency CW Ce the frequency of the output x 1000 Hz SOURce FUNCtion DC VOLTage Sets the de output voltage X IN VM3640A Command Dictionary 25 VTI Instruments Corp Command Description RST Reset Value SOURce FUNCtion PULSe WIDTh Sets the pulse width X 1 us 1e3 Hz SOURce FUNCtion SHAPe Selects the output waveform shape X SIN SOURce FUNCtion SQUare DUTY Sets the duty cycle of the square wave x 30 0 function SOURce FUNCtion USER DIRectory Lists the user defined waveforms N A SOURce FUNCtion USER FREE Queries the amount of free space for N A user defined waveforms SOURce FUNCtion USER NAME Sets the output waveform shape to a N A user defined waveform SOURce FUNCtion USER WAVE Sets the name and stores a user N A defined waveform SOURce MARKer POLarity Sets the polarity for the output marker X POS SOURce MARKer POSition Sets the marker to a specified point X 0 SOURce MARKer SOURce Selects the source to generate the x ZCRO output marker SOURce MARKer STATe Enables or disables the marker output X 1 SOURce OUTPut FILTer LPASs STATe Enables or bypasses the output filter X 1 SOURce OUTPut FILTer LPASs
70. pplies power to or removes power from the instrument Note that following a power off power on cycle a five second period of time exists where the instrument cannot be used This interval allows the instrument to complete the process of initialization Examples Command Query CONT IPOW 1 COUNT IPOW Response Description Turns the instrument power ON 1 Indicates that instrument power is ON Related Commands N A 58 VM3640A Command Dictionary www vtiinstruments com FSK STATe Purpose Enables or disables Frequency Shift Key modulation input Type Setting Command Syntax FSK STATe lt boolean gt OTTO ERT ere lt boolean gt 0 1 OFF ON RST Value 0 Query Syntax FSK STATe Query Parameters N A Query Response OI Description The FSK State command enables or disables frequency shift key modulation input The default state is disabled Examples Command Query FSK 1 FSK Response Description Enables frequency shift key modulation input 1 Indicates that the frequency shift key has been enabled Related Commands AM STATe PSK STATe VM3640A Command Dictionary 59 VTI Instruments Corp PSK STATe Purpose Enables or disables Phase Shift Key modulation input Type Setting Command Syntax PSK STATe lt boolean gt OTTO ERT elcome lt boolean gt 0 1 OFF ON RST Value
71. r s enable register then clears the register contents and enters the value into the computer Command Query STAT OPER ENAB 33 STAT OPER ENAB Enables bit 0 and bit 5 33 Indicates that bit 0 and 5 are enabled STATus OPERation CONDition STATus OPERation EVEN 106 VM3640A Command Dictionary www vtiinstruments com STATus OPERation EVENt Purpose Queries the Operation Status Register s event register Type Required SCPI command Command Syntax N A Ao N A RST Value N A Query Syntax STATus OPERation EVENt Query Parameters N A Query Response 0 Description Queries the bits set in the event register of the Operation Status Register This command clears all bits in the event register e Command Query Response Description STAT OPER 0 Related Commands STATus OPERation CONDition STATus OPERation ENABle VM3640A Command Dictionary 107 VTI Instruments Corp STATus PRESet Purpose Presets the Status Registers Type Required SCPI command Command Syntax STATus PRESet Command evn N A RST Value N A Query Syntax N A Query Parameters N A Query Response N A Description The Status Preset command presets the Status Registers The Operational Status Enable Register is set to 0 and the Questionable Status Enable Register is set to 0 This command is provided for SCPI compliance only Drevin
72. rameter Description The VM3640A is designed to drive a 50 Q load This command allows the user to input a different value for use in the gain calculations Examples Command Query SENS CORR IMP 200 57 SENS CORR IMP Sets the load resistance value to 200 57 Q 200 57 Indicates that the load resistance value was set to 200 57 Q Related Commands SOURce FUNCtion DC VOLTage SOURce VOLTage LEVel AMPLitude SOURce VOLTage LEVel OFFSet 62 VM3640A Command Dictionary www vtiinstruments com SOURce BURSt COUNt Purpose Sets the number of cycles per burst Type Setting Command Syntax SOURce BURSt COUNt lt count gt OHNE Mee wake lt count gt integer from 1 to 65535 RST Value 1 Query Syntax SOURce BURSt COUNt Query Parameters N A Query Response Returns the set value of the lt count gt parameter for this command Description The Source Burst Count command sets the number of output cycles per burst The default value is 1 cycle Examples Command Query BURS COUN 12 BURS COUN Sets the burst count to twelve cycles 12 Returns the set value for the burst count Related Commands SOURce BURSt PHASe SOURce BURSt RATE SOURce BURSt STATe VM3640A Command Dictionary 63 VTI Instruments Corp SOURce BURSt PHASe Purpose Sets the phase of the output waveform Typ
73. ration STORe 56 VM3640A Command Dictionary www vtiinstruments com CALibration STORe Purpose Stores calibration data into non volatile memory Type Event Command Syntax CALibration STORe Ao N A RST Value N A Query Syntax N A Query Parameters N A Query Response N A Description The Calibration Store command stores correction data into non volatile memory The correction data is calibration data that has been downloaded via the program messages in the CALibration DATA subsystem The Calibration Store should only be performed after all the correction data has been finalized Calibration commands should only be executed by qualified A personnel Changing these values instrument to perform improperly incorrectly can cause the Examples Command Query CAL STOR Response Description Stores correction data into non volatile memory Related Commands CALibration DATA CALibration SECure CODE CALibration SECure STATe VM3640A Command Dictionary 57 VTI Instruments Corp CONTrol IPOWer Purpose This command applies power to or removes power from the instrument Type Setting Command Syntax CONTrol IPOWer lt boolean gt ANNIE eN lt boolean gt 0 1 OFF ON RST Value ON Query Syntax CONTrol IPOWer Query Parameters N A Query Response OI Description This command a
74. rkers per cycle BBITs With this setting the Marker comes from a bit in Trace RAM The marker is generated from pattern RAM and is active for one sample time during the generation of waveforms generated by the DAC For this reason the BBITs marker cannot be used with SINe and SQUare waveforms The location of the marker with respect to the beginning of the waveform is set by the MARK POS command The default setting is ZCROss Examples Command Quer MARK SOUR BBIT MARK SOUR Selects BBITs are the output marker BBIT Indicates that BBIT is selected as the output source Related Commands SOURce MARKer POLarity SOURce MARKer POSition SOURce MARKer STATe VM3640A Command Dictionary 79 VTI Instruments Corp SOURce MARKer STATe Purpose Enables or disables the marker output Type Setting Command Syntax SOURce MARKer STATe lt boolean gt HMM ere lt boolean gt 0 1 OFF ON RST Value 1 Query Syntax SOURce MARKer STATe Query Parameters N A Query Response OI Description The Source Marker State command enables or disables the output marker The default setting is enabled revi ay Command Query Response Description MARK 0 Disables the output marker Related Commands SOURce MARKer POLarity SOURce MARKer POSition 80 VM3640A Command Dictionary www vtiinstruments com SOURce OUTPut FILTer LPASs
75. rnnnnnnnnrnnn nc nn nennnncnnnnnos 49 CAlibranonl DATATSOLO nn cnn nnnn nn cnn nnnnnnnnnnrnn anna nn nena nnninnnnos 50 CALibration DATA SQUare OFFSet OFFSet ccccccecsseescessceeecesecesecnecseecaeecaeeeaeseeeeeeeseenseeeseeeaeenaeenaeeaeeenes 51 CAlibranonl DATATZERO nn nn nnnnnn nn nonnnrnnn nn nn nrnnn nc nn nena nncinnnros 52 CADibratiorDELEV a e ii 53 CALibration SECure CODE dd da tii 54 CALibration SECure STAT 6 a diia 55 CALibration STA tb 56 CAL ibration S TOR C eege ee 57 CONT LOLTPO Mi A a Added 58 ESTA Ti A A a ec tee eee 59 PSKES DA Ti A A dt ba 60 A edicense niee sue ikea see a en e essed ewe toate ba aces in ede ate hea tele ie bt e 61 SENSe COR Rection IMPedance ui dida 62 SOURce BURSt COUNE EENS Ad dadas 63 SOURce BURSt PHASS EISES ne ida dde duces 64 SOURce BURStRA TE 00000 a boda 65 SOURcCE BURStES ele geess e E 66 SOURce CLOCK CONF igre 2 2 0 creek ee E ed te 67 SOURce FREQU ncy ECW r inie A dee ee EEGEN 68 SOURCE FUNC on DC VOL age cei ee Ee dE Ae ee EA 69 SOU Rc FUNC on PULSE WD T eege sees A oe ee eee 70 SOURce FUNCGton fs SHAPE x eet eeh A A A O O TE 71 SOURce FUNG SQU are DUTY A dee ee A eee E 72 SOURce FUNCtion USER DI Rectory ee iee kone ened ia 73 SOURce FUNCtion USER FREE ee bose a Gi thee Ee Ae ee 74 SOURce FUNCtion USERNAME eet ee EE a asa 75 SOURce FUNCtHOn USER WAVE 0 ee ee EENS 76 SOURce MAR Ker PO Latitys eege ees eit Sea isa 77 SOURG
76. t Once set the user need only type in FUNC USER to use this waveform which will remain unchanged until another user defined waveform is selected by the user Examples Command Query FUNC USER 18username Sets the user defined output wave form to username FUNC USER 18username Returns the user defined waveform 18username FUNC PULS WIDT 30e 6 10e3 Sets the pulse width to 30 us and the pulse frequency to 10 kHz Related Commands SOURce FUNCtion USER FREE SOURce FUNCtion USER WAVE VM3640A Command Dictionary 75 VTI Instruments Corp SOURce FUNCtion USER WAVE Purpose Sets the name and stores a user defined waveform Type Setting Command Syntax SOURce FUNCtion USER WAVE lt block_data gt Command Parameters lt block_data gt IEEE 488 2 definite or indefinite length arbitrary block format RST Value N A Query Syntax N A Query Parameters N A Query Response N A Description Examples Command Query The Source Function User Wave command sets the name and size of a user defined waveform in an IEEE 488 2 definite or indefinite length arbitrary block format For example 213username 4095 Defines the name of the user defined waveform username and the size of the waveform 4095 The waveform name and the waveform size are separated by a comma Note Wavef
77. t 7 Operation Status Summary Command Query Response Description SRE 4 Sets the service request enable register SRE 4 Returns the value of the SRE register N A 36 VM3640A Command Dictionary www vtiinstruments com STB Purpose Queries the Status Byte Register Type IEEE 488 2 Common Command Command Syntax N A Command Parameter N A RST Value N A Query Syntax STB Query Parameters N A Query Response Numeric ASCII value from 0 to 255 Description The Read Status Byte STB query fetches the current contents of the Status Byte Register See the IEEE 488 2 specification for additional information regarding the Status byte Register and its use The layout of the Status Register is Bit 0 Unused Bit 1 Unused Bit 2 Error Queue Has Data Bit 4 Questionable Status Summary not used Bit 5 Message Available Bit 6 Master Summary Status Bit 7 Operation Status Summary Examples Command Query Response Description STB 16 Queries the Status Byte Register Related Commands N A VM3640A Command Dictionary 37 VTI Instruments Corp TRG Purpose Causes a trigger event to occur Type IEEE 488 2 Common Command Command Syntax TRG Command Parameter N A RST Value N A Query Syntax N A Query Parameters N A Query Response N A Description The Trigger command causes a trigger event to occur
78. tober 2004 C 3 AS A LS A Steve Mauga OA Manager VM3640A Preface 7 VTI Instruments Corp VM3640A Preface www vtiinstruments com GENERAL SAFETY INSTRUCTIONS Review the following safety precautions to avoid bodily injury and or damage to the product These precautions must be observed during all phases of operation or service of this product Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design manufacture and intended use of the product Service should only be performed by qualified personnel TERMS AND SYMBOLS These terms may appear in this manual WARNING Indicates that a procedure or condition may cause bodily injury or death CAUTION Indicates that a procedure or condition could possibly cause damage to equipment or loss of data These symbols may appear on the product ATTENTION Important safety instructions pe Frame or chassis ground WARNINGS Follow these precautions to avoid injury or damage to the product Use Proper Power Cord To avoid hazard only use the power cord specified for this product Use Proper Power Source To avoid electrical overload electric shock or fire hazard do not use a power source that applies other than the specified voltage Use Proper Fuse To avoid fire hazard only use the type and rating fuse specified for this product VM3640A Preface 9 VTI Instruments Corp
79. ts the gain correction for a specified de voltage output level Calibration commands should only be executed by qualified personnel Changing these values incorrectly can cause the instrument to perform improperly Response Description Sets point 3 to 8 7 V with a gain of 0 9886 8 7 0 9886 Returns the set value for point 3 of 8 7 V with a gain of 0 9886 Kxamples Command Que CAL DC LEV 3 8 7 0 9886 CAL DC LEV 3 Related Commands SOURce FUNCtion DC VOLTage SOURce VOLTage LEVel AMPLitude SOURce VOLTage LEVel OFFSet VM3640A Command Dictionary 53 VTI Instruments Corp CALibration SECure CODE Purpose Sets the code required to disable calibration security Type Setting Command Syntax CALibration SECure CODE lt string gt ENUM NIT lt string gt the code string can be from 1 to 12 ASCII characters in length entered in IEEE 488 2 definite or indefinite length arbitrary block format RST Value N A Query Syntax CALibration SECure CODE lt string gt Query Parameters N A Query Response Returns the set value of the lt string gt parameter Description The Calibration Security Code command sets the code required to disable calibration security Calibration security must first be disabled before the code can be changed Before shipping the instrument the factory code setting is VM3640 Calibration commands should only be executed by
80. ubdivision b 3 ii of the Rights in Technical Data and Computer Software clause in DFARS 252 227 7013 VXI Technology Inc 2031 Main Street Irvine CA 92614 6509 U S A 6 VM3640A Preface www vtiinstruments com DECLARATION OF CONFORMITY Declaration of Conformity According to ISO IEC Guide 22 and EN 45014 MANUFACTURER S NAME VXI Technology Inc MANUFACTURER S ADDRESS 2031 Main Street Irvine California 92614 6509 PRODUCT NAME 50 MSample s Arbitrary Waveform Generator MODEL NUMBER S VM3640A PRODUCT OPTIONS All PRODUCT CONFIGURATIONS All VXI Technology Inc declares that the aforementioned product conforms to the requirements of the Low Voltage Directive 73 23 EEC and the EMC Directive 89 366 EEC inclusive 93 68 EEC and carries the CE mark accordingly The product has been designed and manufactured according to the following specifications SAFETY EN61010 2001 EMC EN61326 1997 w A1 98 Class A CISPR 22 1997 Class A VCCI April 2000 Class A ICES 003 Class A ANSI C63 4 1992 AS NZS 3548 w Al amp A2 97 Class A FCC Part 15 Subpart B Class A EN 61010 1 2001 The product was installed into a C size VXI mainframe chassis and tested in a typical configuration I hereby declare that the aforementioned product has been designed to be in compliance with the relevant sections of the specifications listed above as well as complying with all essential requirements of the Low Voltage Directive Oc
81. uted by qualified personnel Changing these values incorrectly can cause the instrument to perform improperly Examples Command Query CAL COUN Response Description 24 Returns the number of times the CAL STOR command has been performed Related Commands CALibration SECure CODE CALibration SECure STATe CALibration STORe 42 VM3640A Command Dictionary www vtiinstruments com CALibration DATA AFCorrection Purpose Sets the amplitude gain correction Type Setting Command Syntax CALibration DATA AFCorrection lt point gt lt freq gt lt gain gt HMM AN lt point gt 0 to 63 an index into the table of gain corrections lt freq gt frequency value lt gain gt gain value should be set to 1 for no correction RST Value N A Query Syntax CALibration DATA AFCorrection lt point gt Query Parameters lt point gt 0 to 63 an index into the table of gain corrections Query Response Returns the set values for the lt freq gt and lt gain gt parameters the following format lt freq gt lt gain gt Description The Calibration Data AFCorrection command sets an amplitude gain correction for a specified frequency point Frequency Gain correction factor should only be changed by qualified calibration personnel Calibration commands should only be executed by qualified personnel Changing these values incorrectly
82. x SOURce SWEep COUNt lt count gt LB OO IER MEN UO lt count gt 0 to 65535 RST Value 0 continuous Query Syntax SOURce SWEep COUNt Query Parameters N A Query Response Returns the set value of the lt count gt parameter for this command Description The Source Sweep Count command sets the number of sweeps per trigger event The default value is 0 which is a continuous sweep Examples Command Query Response Description SWE COUN 10 Sets the number of sweeps to 10 per trigger Related Commands SOURce SWEep DIRection SOURce SWEep MODE SOURce SWEep POINts SOURce SWEep SPACing SOURce SWEep STARt SOURce SWEep STOP SOURce SWEep STATe SOURce SWEep TIME VM3640A Command Dictionary VTI Instruments Corp SOURce SWEep DIRection Purpose Sets the sweep direction Type Setting Command Syntax SOURce SWEep DIRection lt sweep_direction gt BR OEB NIT lt sweep_direction gt UP for low to high DOWN for high to low RST Value UP Query Syntax SOURce SWEep DIRection Query Parameters N A Query Response UP DOWN Description The Source Sweep Direction command sets the sweep direction from low to high UP or from high to low DOWN The default setting is from low to high UP Examples Command Query Response Description SWE DIR DOWN Sets the sweep direction to sweep from high to low down Relate

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