2-20
5. After settling, note the DMM reading, then send the
actual DMM reading as a numeric parameter included
with the following command:
:CAL:PROT:VSRCZ100 <DMM_reading>
For example, if the actual DMM reading were 0.005V,
you would send the following command:
:CAL:PROT:VSRCZ100 5E-3
6. Repeat steps 4 and 5 for each voltage source output
value listed in Table 2-14. Keep in mind that each cali-
bration point is a two-step process:
• First send the appropriate VSET command to pro-
gram the voltage source to the correct output value.
• Note the DMM voltage reading, then include that
reading as a numeric parameter with the correspond-
ing VSRC command. Be sure to include the minus
sign for negative parameters.
Table 2-14
IEEE-488 bus voltage source calibration summary
Calibration step
Calibration command*
Output 0V (100V range)
Program 0V DMM reading
40V
P40V DMM reading
100V
P100V DMM reading
Output -100V
Program -100V DMM reading
Output 0V (1000V range)
Program 0V DMM reading
400V
P400V DMM reading
1000V
P1000V DMM reading
Output -1000V
Program -1000V DMM reading
:CAL:PROT:VSETZ100
:CAL:PROT:VSRCZ100 <DMM_reading>
:CAL:PROT:VSET40
:CAL:PROT:VSRC40 <DMM_reading>
:CAL:PROT:VSET100
:CAL:PROT:VSRC100 <DMM_reading>
:CAL:PROT:VSETN100
:CAL:PROT:VSRCN100 <DMM_reading>
:CAL:PROT:VSETZ1000
:CAL:PROT:VSRCZ1000 <DMM_reading>
:CAL:PROT:VSET400
:CAL:PROT:VSRC400 <DMM_reading>
:CAL:PROT:VSET1000
:CAL:PROT:VSRC1000 <DMM_reading>
:CAL:PROT:VSETN1000
:CAL:PROT:VSRCN1000 <DMM_reading>
* <DMM_reading> parameter is actual DMM reading obtained after programming voltage source output using
VSET command from previous step.
Step 8: Voltage Source Calibration
Perform the steps below to calibrate the Model 6517A volt-
age source. Table 2-14 summarizes these steps.
WARNING
Hazardous voltages will be present
when performing the following steps.
Avoid touching terminals while per-
forming this procedure.
1. Select the DCV function and the auto-range mode on the
DMM.
2. Temporarily short the ends of the DMM test leads, then
enable the DMM REL mode. Leave REL enabled for the
remainder of the tests.
3. Connect the DMM to the V SOURCE OUT jacks (see
Figure 2-7).
4. Send the following command to the instrument:
:CAL:PROT:VSETZ100