Ieee-488 Bus Volts Function Calibration Summary; Table - Keithley 6517 Service Manual

Calibration
Step 4: Volts Calibration
Perform the steps below to calibrate the Model 6517A volts
function. Table 2-10 summarizes these steps.
1. Remove the triax shielding cap from the INPUT jack,
and connect the DC voltage calibrator to the INPUT
jack in its place (see Figure 2-2).
2. Set the DC voltage calibrator output to 0.00000V DC,
and allow a short time period for settling.
3. Send the following command to the instrument:
:CAL:PROT:VZERO2
Throughout the entire calibration proce-
dure, be sure to allow the instrument to
complete each command before sending
the next one. See paragraph 3.9 in Section
3 for information on how to determine
when each command has been completed.
4. Set the calibrator output voltage to +1.900000V, and
allow time for settling.
2-16
NOTE

Table 2-10

IEEE-488 bus volts function calibration summary

Volts calibration Calibrator
step voltage
2V range zero 0.000000V DC
+2V step +1.900000V DC
-2V step -1.900000V DC
20V range zero 0.000000V DC
+20V step +19.00000V DC
-20V step -19.00000V DC
200V range zero 0.000000V DC
+200V step +190.0000V DC
-200V step -190.0000V DC
*Bus command parameters based on recommended calibrator voltages. Substi-
tute appropriate numeric parameter if using different calibrator voltages.
5. Send the following command to the instrument:
:CAL:PROT:V2 1.9
NOTE
If you are using calibration values other
than those given, be sure to change
command parameters
However, for optimum accuracy, it is
recommended that you use the stated
calibration values throughout the entire
calibration procedure.
6. Set the calibrator output voltage to -1.90000V, and allow
for settling time.
7. Send the following command:
:CAL:PROT:VN2 -1.9
8. Repeat steps 3 through 7 for the +20V, -20V, +200V, and
-200V steps using the calibrator voltages and commands
summarized in Table 2-10. For each step, be sure to set
the calibrator voltage properly, and use the correct bus
command.
Bus commands*
:CAL:PROT:VZERO2
:CAL:PROT:V2 1.9
:CAL:PROT:VN2 -1.9
:CAL:PROT:VZERO20
:CAL:PROT:V20 19
:CAL:PROT:VN20 -19
:CAL:PROT:VZERO200
:CAL:PROT:V200 190
:CAL:PROT:VN200 -190
accordingly.