Keithley 2002 User Manual page 357

STB?
Purpose
Format
Response
Description
Note
SWEEP
Purpose
Format
Parameter
Default
Query
Description
Example
T or TRIG
Purpose
Format
To request the status register value.
STB?
Decimal weight Bit number
4 2
8 3
16 4
32 5
64 6
128 7
The STB? query returns a number representing the weighted sum of all set bits in the status register.
The instrument may be programmed to generate an SRQ for specific status register conditions with
the RQS command.
The STB? query will always show bit 4 as being cleared since the query is being processed, but this
bit can be checked by using serial polling.
To program the interval between readings and the number of samples per trigger.
SWEEP <effective_interval>, <#_samples>
<effective_interval>
<#_samples>
Interval: 0
#samples: 1024 (power-on=1)
Returns two responses separated by a comma: (1) the specified interval, and (2) the
SWEEP?
specified number of samples.
The SWEEP command specifies the both the effective interval between readings (samples and the total
number of samples taken per trigger event.
0.1 interval, 100 samples.
SWEEP 0.1, 100
To program the trigger event.
T <event>
TRIG <event>
Status register condition
SRQ command executed
Power on
Ready for instructions
Error (as set by EMASK)
Service requested (SRQ)
Data available
0.001 to 9999999.99
1 to 99999
HP3458A Emulation Mode
H-19