Keithley 2520, Service Manual, Page: 126 / 137

B-6 Calibration Reference Model 2520 Pulsed Laser Diode Test System Service Manual
Measurement commands
:SENSe
(:CALibration:PROTected:SENSe[1])
(:CALibration:PROTected:SENSe2)
(:CALibration:PROTected:SENSe3)
Purpose To calibrate the active voltage or current measurement range.
Format
:cal:prot:sens1 <Cal_voltage>
:cal:prot:sens2 <Cal_current>
:cal:prot:sens3 <Cal_current>
Parameters
<Cal_current> = Within ±10% of positive full-range value
<Cal_voltage> = 0 ±0.1% of full-range value
Within ±10% of negative full-range value
Description The :CAL:PROT:SENS1 command calibrates the active voltage mea-
surement range, while the CAL:PROT:SENS2 and :CAL:PROT:SENS3
commands calibrate the active detector 1 or detector 2 current measure-
ment range respectively. During the calibration process, each command
is sent three times for each range, once each with parameters of positive
full range, 0, and negative full range. The appropriate calibration volt-
age or current must be applied to the appropriate input terminals.
Example
:CAL:PROT:SENS2 20e-3
Calibrate detector 1 20mA range.
:DATA
(:CALibration:PROTected:SENSe[1]:DATA?)
(:CALibration:PROTected:SENSe2:DATA?)
(:CALibration:PROTected:SENSe3:DATA?)
Purpose To query measurement calibration constants.
Query
:cal:prot:sens1:data?
:cal:prot:sens2:data?
:cal:prot:sens3:data?
Description
The :CAL:PROT:SENS1:DATA? query requests voltage calibration
constants, while the :CAL:PROT:SENS2:DATA? and
:CAL:PROT:SENS3:DATA? queries request calibration current con-
stants for detector 1 and detector 2 respectively. Returned values are in
ASCII format separated by commas.
Example
:CAL:PROT:SENS1:DATA?
Query voltage constants.