Keithley 2520 Service Manual page 54

2-24 Calibration
Step 2: Voltage measurement calibration
Follow these steps to calibrate voltage measurements.
voltages and commands.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Put the unit into the DC mode with this command:
:SOUR1:FUNC:SHAP DC
Send the following command to select the 10V range:
:SENS1:VOLT:RANG 10
Disconnect all signal cables from the testhead.
Send the following commands in order:
:DIAG:KEIT:FCON:HI ON
:DIAG:KEIT:FCON:LO ON
:SENS1:VOLT:POL NEG
:CAL:PROT:SENS1 0
:SENS1:VOLT:POL POS
:CAL:PROT:SENS1 0
:DIAG:KEIT:FCON:LO OFF
Connect the calibrator to the Model 2520 testhead VOLTAGE SENSE jacks, as
shown in Figure 2-2.
Set the calibrator voltage output to -10.000V, and turn on its output.
Send the following command to calibrate the +10V point:
:CAL:PROT:SENS1 10
Reverse the calibrator HI and LO connections.
Send the following commands to calibrate the negative full-range voltage point:
:DIAG:KEIT:FCON:HI OFF
:DIAG:KEIT:FCON:LO ON
:SENS1:VOLT:POL NEG
:CAL:PROT:SENS1 -10
:DIAG:KEIT:FCON:LO OFF
Repeat steps 2 through 9 for the 5V range using
• Select the 5V range using the :SENS1:VOLT:RANG 5 command.
• Send the appropriate calibration voltage values with the :CAL:PROT:SENS1
<Voltage> command.
Model 2520 Pulsed Laser Diode Test System Service Manual
Table 2-9
Table 2-9
summarizes calibration
as a guide. Be sure to: