Keithley 2001

Calibration Command Reference
3-7
:SWITch?
(CALibration:PROTected:LLEVel):SWITch?
Purpose To request the state of the low-level calibration lock.
Format :cal:prot:llev:swit?
Response 0 Low-level calibration locked.
1 Low-level calibration unlocked.
Description :SWITch? query requests the status of the low-level calibration lock from the instrument.
This :SWITch? query should not be confused with the :SWITch query that requests the sta-
tus of the comprehensive calibration lock (see paragraph 3.3.1).
Programming note To unlock low-level calibration, hold in the CAL switch while turning on instrument power.
Programming example 10 OUTPUT 716; “:CAL:PROT:LLEV:SWIT?” ! Request switch status.
20 ENTER 716; S ! Input switch status.
30 PRINT S ! Display switch status.
:STEP
(CALibration:PROTected:LLEVel):STEP
Purpose To program individual low-level calibration steps.
Format :cal:prot:llev:step <n>
Parameters 120V AC @ 1kHz
2 20V AC @ 30kHz
3 200V AC @ 1kHz
4 200V AC @ 30kHz
5 1.5V AC @ 1kHz
6200mV AC @ 1kHz
7 5mV AC @ 100kHz
8 0.5mV AC @ 1kHz
9+2V DC
10 -2V DC
11 0V DC
12 20mA @ 1kHz
13 +200mA DC
14 +2A DC
15 2V AC @ 1Hz
Description The :STEP command programs the 15 individual low-level calibration steps; <n> repre-
sents the calibration step number. The appropriate signal must be connected to the instru-
ment when programming each step, as summarized in the parameters listed above (see
Section 2 for details).
Programming example 10 OUTPUT 716; “:CAL:PROT:LLEV:STEP 1” ! Low-level Step 1.