Remote Manufacturing Calibration; Model 7700 Calibration - Keithley 2701 Service Manual

Model 2701 Ethernet-Based DMM / Data Acquisition System Service Manual

Remote manufacturing calibration

To perform remote manufacturing calibration:
1. Install the shorted 7797 calibration board (see
scanner card slot 1 and select the rear inputs with the INPUTS switch. Allow three minutes for
thermal equilibrium.
2. Press and hold the OPEN key while turning on the power.
3. Enable calibration by sending the :CODE command. The default command is :CAL:PROT:CODE
'KI002701'.
4. Initiate calibration by sending the :CAL:PROT:INIT command.
5. Calibrate step 0 with the :CAL:PROT:DC:STEP0 command.
6. Perform the remote comprehensive calibration procedure discussed earlier in this section. See
Comprehensive calibration
7. Connect the function generator to the 2701 INPUT jacks. Select the front input jacks with the
INPUTS switch.
8. Set the generator to output a 1 V RMS, 3 Hz sine wave, then send :CAL:PROT:AC:STEP14
<Cal_voltage>. <Cal_voltage> is the actual 3 Hz generator signal amplitude you previously
measured.
9. Set the generator to output a 1 V RMS, 1 kHz sine wave, then send :CAL:PROT:AC:STEP15
1E3.
10. Send the following commands to set calibration dates, save calibration, and lock out calibration:
:CAL:PROT:DATE <year>, <month>, <day>
:CAL:PROT:NDUE <year>, <month>, <day>
:CAL:PROT:SAVE
:CAL:PROT:LOCK

Model 7700 calibration

The following procedures calibrate the temperature sensors on the 7700 plug-in models.
For additional information about the Keithley modules, refer to the appropriate appendix in the 2701
User's Manual.
2701-902-01 Rev. B / December 2018
Calibration card preparation
(on page 2-4).
Section 2: Calibration
(on page 2-19)) into
2-21