| 2051
Command |
Equivalent
2461C Command(s) |
Comments |
*CLS
|
*CLS
|
Clears
all event registers and error queue
|
| *ESE |
*ESE |
Standard
event enable register
|
| *ESE? |
*ESE? |
Standard
event enable register query
|
| *ESR? |
*ESR? |
Standard
event status register query
|
| *IDN? |
*IDN? |
Recalls
VXIbus processor firmware revision
|
| *OPC |
*OPC |
Sets
the operation complete in the ESR after all events completed
|
| *OPC? |
*OPC? |
Set
to 1 if all pending operations are complete
|
| *RST |
*RST |
Returns
the module to its default state
|
| *SRE |
*SRE |
Service
Resquest Enable
|
| *SRE? |
*SRE? |
Service
Request Enable Query
|
| *STB? |
*STB? |
Status
Byte Query
|
| *TRG |
*TRG |
Triggers
the counter to take a measurement
|
| *TST? |
*TST? |
Self
Test Query
|
| *WAI |
Not implemented
in 2461C |
Wait
to continue
|
| ATTENA OFF |
INP1:ATT
X1 |
Disables
Input A x10 attenuator |
| ATTENA ON |
INP:ATT
X10 |
Enables
Input A x10 attenuator |
| CHECK |
CONF:CHECk |
Selects
CHECK mode |
| CLK10 OFF |
SOUR:ROSC
EXT
or
SOUR:ROSC INT |
2051:
Selects internal TXCO (may be overridden by EXT reference)
2461C: Selects internal TCXO or OCXO (if installed) or ext ref. |
| CLK10 ON |
SOUR:ROSC
CLK 10 |
Selects
10MHz signal from backplane as reference frequency |
| DISP? |
FETCH? |
Places
the latest measurement into the output queue |
| FILTA OFF |
INP1:FILT
OFF |
Disables
Input A low pass filter |
| FILTA ON |
INP:FILT
ON |
Enables
Input A low pass filter |
| FRQA x |
CONF1:FREQ
EV,x |
Selects
Frequency A measurement mode (EV is expected value) |
| FRQB x |
CONF3:FREQ
EV,x |
Selects
Frequency B measurement mode (chan. 3 on 2461C) |
| GATE? |
*STB?
OR Serial Poll (bit 7) |
Boolean
value representing gate open ("1") or gate closed
("0") |
| HOLD ON | OFF |
INIT:CONT
OFF | ON |
Turning
HOLD OFF suspends repetitive triggering. |
| MEAS:CONT? |
INIT:CONT
ON;:FETCH? |
2051:
In MEAS:CONT mode, output queue is read continuously.
2461C: Once INIT:CONT On, send one FETCH? per measurement. |
| MEAS? |
READ? |
Single
shot measurement |
| MULT OFF |
CALC:STAT
OFF |
Disables
Multiply function (multiply and offset on 2461C) |
| MULT ON |
CALC:STAT
ON |
Enables
Multiply function (multiply and offset on 2461C) |
| MULT x |
CALC:MATH:EXPR
x,y |
Sets
Multiply factor (multiply and offset factor on 2461C) |
| MULT x |
CALC:MATH:EXPR
x,y |
Sets
math constant for gain |
| MULT? |
CALC:STAT? |
Queries
Multiply function (queries multiply and offset on 2461C) |
| OFFSET OFF |
CALC:STAT
OFF |
Disables
Offset function (multiply and offset on 2461C) |
| OFFSET ON |
CALC:STAT
ON |
Enables
Offset function (multiply and offset on 2461C) |
| OFFSET x |
CALC:MATH:EXPR
x,y |
Sets
offset factor (multiply and offset factor on 2461C) |
| OFFSET Y |
CALC:MATH:EXPR
x,y |
Sets
math constant for offset |
| OFFSET? |
CALC:STAT? |
Queries
Offset function (queries multiply and offset on 2461C) |
| RABA x |
CONF3:FREQ:RAT
EV,x |
Selects
Ratio B/A measurement mode (3/1 for 2461C) |
| SAMPLE n |
APER
N |
Sets
gate time to n seconds |
| SAMPLE? |
APER? |
Queries
gate time in seconds |
| SF 20,OFF |
SENS:AVER
OFF |
Disables
Averaging mode |
| SF 21,0N |
SENS:AVER
ON |
Enables
Averaging mode |
| SF70 |
CONF:CHECk |
Enables
check mode with CK command |
| SF72 |
INIT:CONT
ON;:TEST:TEC:SHORT ON |
Start
TEC short continuous calibration in CK mode |
| SF73 |
INIT:CONT
ON;:TEST:TEC:LONG ON |
Start
TEC long continuous calibration in CK mode |
| SF74 |
INIT:CONT
OFF;:TEST:TEC:SHORT ON |
Start
TEC short calibration in CK mode |
| SF75 |
INIT:CONT
OFF;:TEST:TEC:LONG ON |
Start
TEC long calibration in CK mode |
| SF80 |
Not
implemented in 2461C |
Enables
2 character function header on readback string |
| SF81 |
Default
state of the 2461C |
Disables
2 character function header on readback string |
| STD? |
SOUR:ROSC? |
2051:
Returns 1 for internal, 2 for external standard used
2461C: Returns INT for internal, EXT for external standard used |
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