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Model 2790 SourceMeter
4.
5.
Short and open calibration
1.
klqb
2.
3.
klqb
®
Switch System Reference Manual
Unlock the calibration function by sending this command:
:CAL:PROT:CODE 'KI002790'
(The above command shows the default code, KI002790. Substitute the correct
code if changed.)
Send the following command to initiate calibration:
:CAL:PROT:INIT
Connect the Model 8610 low-thermal short to the instrument INPUT and SENSE
terminals as shown in
Figure
so that the front inputs are active. Wait at least three minutes before proceeding to
allow for thermal equilibrium.
Be sure to connect the low-thermal short properly to the HI, LO, and SENSE ter-
minals. Keep drafts away from low-thermal connections to avoid thermal drift,
which could affect calibration accuracy.
Send the following command:
:CAL:PROT:DC:STEP1
After the Model 2790 completes this step, remove the low-thermal short and then
send this command:
:CAL:PROT:DC:STEP2
Be sure to minimize movement near front input terminals. Excessive movements
can cause capacitive coupling errors, which could affect calibration accuracy.
17-1. Make sure the INPUTS button is not pressed in
17-15
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