Tektronix MultiPaq VX4101A Service manual

Reference
VX4101A
MultipaqInstrument
071-0050-00
This document applies to firmware version 2.00
and above.

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TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

VX4101A MultipaqInstrument Reference
1
Refer to sections in the VX4101A MultipaqInstrument User
Manual for more information.
Setup
Be sure all switches are correctly set (see the Controls and Indicators
section). Follow Installation guidelines (see the Installation section).
The default condition of the VX4101A Module after the completion
of the power-on self test is listed in full under the *RST command in
the IEEE 488.2 Common Commands section.
LEDs
The VX4101A has four LEDs visible on its front panel. These LEDs
are labeled as follows:
Power This LED is On if all six fuses for the six power buses are intact.
Any single fuse being blown results in the LED turning OFF.
Fail LED This LED is normally OFF. During power-on or reset self-test,
the LED will be ON for the duration of the test. If the VX4101A
detects a failure during normal operation, the LED will come
ON and the SYSFAIL line on the backplane will be true.
Message This LED flickers ON when the VX4101A is being addressed
on the VME backplane by its commander
ERR This LED is normally OFF. However, it may blink on and off to
indicate error conditions. The most common reason is a
command syntax error has been detected. Other error
conditions that will cause the LED to blink are discussed
elsewhere in this manual. Sending the “SYSTem:ERRor?”
query to the instrument will return the cause of the error. When
all errors in the queue have been retrieved, the error LED will
return to the OFF state

VX4101A MultipaqtInstrument Reference
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Command Syntax
Command protocol and syntax for the VX4101A Module are
described in full in the Command Syntax section.
HA command is a string of ASCII characters (255 max.) termi-
nated by a <program message terminator>.
HCommands can be strung together by delimiting the individual
commands with a semi-colon (;).
HAll characters in a command may be sent in either upper or lower
case form.
HMultiple data parameters are separated by a comma (,).
HWhite space characters exclude the <LF>. White space is allowed
anywhere in a command string, except: within a program
mnemonic; around a (:) separator; between a mnemonic and a
(?); following an (*); within a number; within a list.
HA question mark (?) following a command indicates a response is
to be returned. All responses from the module are terminated
with the <LF>.
Numeric Value Formats: Fixed or floating-point formats are allowed
(with no embedded spaces). All numbers are rounded to the nearest
value appropriate for the particular command. If a sign is not
specified, the number is assumed to be positive.

VX4101A MultipaqtInstrument Reference
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VX4101A MultipaqtInstrument Commands
These SCPI commands control overall functions of theVX4101A.
ABORtSubsystem
Commands ABORt[:COMPlete]
ABORt[:IMMediate]
CALibrateSubsystem
Commands CALibrate:ROSCillator
:CLEar
:MANual <frequency>
INSTrument Subsystem
Commands INSTrument:NSELect <instrument id>
INSTrument[:SELect] <instrument name>
Queries INSTrument:CATalog?
:FULL?
:LONG?
INSTrument:COUNt?
INSTrument:NSELect?
INSTrument[:SELect]?
OUTputSubsystem
Commands OUTPut:EXTernal:SOURce <ext source>
OUTPut:TTLTrg[<N>]:SOURce <trig source>
Queries OUTPut:EXTernal:SOURce:CATalog?
OUTPut:EXTernal:SOURce?
OUTPut:TTLTrg[<N>]:SOURce?
OUTPut:TTLTrg[<N>]:SOURce:CATalog?

VX4101A MultipaqInstrument Reference
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SOURceSubsystem
Commands SOURce:ROSCillator[:SOURce] <source>
SOURce:ROSCillator:VALue <frequency>
Queries SOURce:ROSCillator[:SOURce]?
SOURce:ROSCillator:VALue?
SYStemSubsystem
Commands SYSTem:LANGuage <language>
SYSTem:RQUeue
:QMODe <qmode>
:SNUMber[:SET] <snumber>
:SNUMber:STATe <state>
SYSTem:TIMeout <timeout in seconds>
Queries SYSTem:ERRor?
SYSTem:LANGuage?
SYSTem:OPTions?:DESCription <option code>
SYSTem:READy?
SYSTem:RQUeue?
:QMODe
:SNUMber[:SET]?
:SNUMber:STATe?
SYSTem:SNUMber?
SYSTem:TIMeout?
SYSTem:VERSion?
TRIGgerSubsystem
Commands TRIGger([:SEQuence1]|:STARt)[:LAYer]:FIRe <command trigger>
TRIGger([:SEQuence1]|:STARt)[:LAYer]:TIMer <timer seconds>
Queries TRIGger([:SEQuence1]|:STARt)[:LAYer]:TIMer?

VX4101A MultipaqInstrument Reference
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Universal Counter Commands
ARM Subsystem
Commands ARM([:SEQuence1]|:STARt)[:LAYer]
:DELay <time delay>
:ECOunt <event delay>
:IMMediate
:LEVel <threshold>
:MODE <mode>
:SLOPe <slope>
:SOURce <source>
ARM(:SEQuence2|:STOP)[:LAYer]
:DELay <time delay>
:ECOunt <event delay>
:IMMediate
:SOURce <source>
Queries ARM([:SEQuence1]|:STARt)[:LAYer]
:DELay?
:ECOunt?
:LEVel?
:MODE?
:SLOPe?
:SOURce?
:CATalog[:ALL]?
:DELayable?
:FIXed?
ARM(:SEQuence2|:STOP)[:LAYer]
:DELay?
:ECOunt?
:SOURce?
:CATalog[:ALL]?
:DELayable?
:FIXed?

VX4101A MultipaqInstrument Reference
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CALCulateSubsystem
Commands CALCulate:LIMit
:ENVelope[:DATA] <threshold1>,<threshold2>
:LOWer[:DATA] <threshold>
:UPPer[:DATA] <threshold>
CALCulate:TRANsform:HISTogram:COUNt <numeric_value>
CALCulate:TRANsform:HISTogram:POINts <numeric_value>
CALCulate:TRANsform:HISTogram:RANGe <min>,<max>
CALCulate:TRANsform:HISTogram:RANGe:AUTO <ON|OFF>
Queries CALCulate:AVERage?[<count>[,<offset>[,<step_size>]]]
CALCulate:LIMit
:ENVelope
:FCOunt?
:LOWer [DATA]?
:REPort [:DATA]?
:UPPER [DATA]
CALCulate:MEDian?[<count>[,<offset>[,<step_size>]]]
CALCulate:MINimum?[<count>[,<offset>[,<step_size>]]]
CALCulate:MAXimum?[<count>[,<offset>[,<step_size>]]]
CALCulate:SDEViation?[<count>[,<offset>[,<step_size>]]]
CALCulate:TRANsform:HISTogram?
:ABOVe?
:BELow?
:COUNt?
:POINts?
:RANGe?
:RANGe:AUTO?
CALCulate:VARiance?[<count>[,<offset>[,<step_size>]]]

VX4101A MultipaqInstrument Reference
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CALibrateSubsystem
Commands CALibrate:ARM[:VALue] <arm input voltage>
CALibrate[<channel>]
:DELay <cross channel specifications>
:HYSTeresis
:LFCOmp
:LINearity
:VALue <input voltage>
:ZERO
CALibrate:DTI
CALibrate3:BIAS
CALibrate[1|2|3]:ROSCillator <input frequency>

VX4101A MultipaqInstrument Reference
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CONFigureSubsystem
Commands CONFigure[1|2|3]([:SCALar]|:ARRay)
:FREQuency[<array size>[,<expected value>[,resolution>]]]
:FREQuency:RATio[<array size>[,<expected value>[,resolution>]]]
:PERiod[<array size>[,<expected value>[,resolution>]]]
CONFigure[1|2]([:SCALar]|:ARRay)
:NDUTy cycle|PDUTCycle|DCYCle [<array size>[,<dcycle
reference>[,<expected value>[,resolution>]]]
:NWIDth|PWIDth [<array size>[,<pwidth reference>[,<expected
value>[,resolution>]]]
:PHASe [<array size>[,<expected value>[,resolution>]]]
:RTIMe|FTIMe|RISE:TIME|FALL:TIME [<array size>[,<low
reference>[,<high reference> [,<expected value>[,resolution>]]]]]
:TINTerval [<array size>[,<expected value>[,resolution>]]]
[:VOLTage]
:AC [<array size>[,<expected value>[,resolution>]]]
:DC [<array size>[,<expected value>[,resolution>]]]
:MINimum [<array size>[,<expected value>[,resolution>]]]
:MAXimum [<array size>[,<expected value>[,resolution>]]]
:PTPeak [<array size>[,<expected value>[,resolution>]]]
CONFigure[1|2|11|12|21|22]([:SCALar]|:ARRay)
:TINTerval:DELay:TIME|EVENts[<array size>[,<delay time>|<delay
events>[,<expected value>[,resolution>]]]]]
CONFigure[1|2|10|20]([:SCALar]|:ARRay)
:TOTalize
NOTE: If you specify SCALar in the command, <array size> is not a valid
parameter. If ARRay is specified, <array size> is a required parameter.
Queries CONFigure?