Keithley 2303, User Manual

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4-8 Long Integration Measurements
SCPI programming
A. SENSe:FUNCtion ‘LINTegration’
The parameter name can instead be enclosed in single quotes (as shown above).
B. SENSe:LINTegration:TIME <NRf>
1. The time value sent is rounded down to the nearest step value, which is based on the
power line frequency. For 60Hz, the step value is 16.667 msec. For 50Hz, the step value
is 20msec. For example, for 50Hz, a time value of 10.025 seconds is between steps.
Therefore, the integration period will round down to 10.020 seconds.
2. When there is uncertainty about the actual integration time period, use the :TIME? query
command to read it.
3. The response for :TIME? is affected by the GPIB output format. For decimal formats,
the response has four decimal places, otherwise it is in exponential format. See Section
6 to select the output format.
Table 4-1
SCPI commands — long integration measurements
Commands Description Default Ref
SENSe
:FUNCtion “LINTegration”
:LINTegration
:TIME <NRf>
:AUTO
:TLEVel <NRf>
:TLEVel
[:AMPs] <NRf>
:MILLiamp <NRf>
:TEDGe <name>
:TimeOUT <NRf>
:SEARch <b>
:FAST <b>
READ?
SENSe subystem:
Select long integration measurement function.
Long integration configuration:
Set integration time (in sec); X to 60 (where X is
0.850 for 60Hz, or 0.840 for 50Hz).
Integration time set automatically.
Models 2303 and 2303B - Set trigger level in
amps; 0 to 5 (5mA resolution.
Model 2303-PJ trigger level:
Set trigger level (in amps) for 5A range; 0 to 5
(5mA resolution).
Set trigger level (in amps) for 500mA range; 0 to
0.5 (0.5mA resolution).
Select trigger edge to initiate the measurement;
RISING, FALLING or NEITHER.
Specify length of timeout; 1 to 63 (sec).
Enable or disable pulse search.
Enable or disable long integrations fast readings.
Trigger and return one reading.
VOLT
1
0.0
0.0
0.0
RISING
16
ON
OFF
A
B
C
D
E