7. After the last AC current calibration step, the instrument will prompt you to enter 10Hz
at 1V RMS and 1kHz with the following prompts:
• Low-frequency cal: Connect the calibrator to the front panel INPUT jacks
(Figure 2-5). Select the front input jacks with the INPUTS switch. Set the calibrator
to output a 1V RMS, 10Hz sine wave. Use the left and right arrow keys, and the
range keys to adjust the display to agree with the calibrator amplitude, then press
ENTER. If an error is reported after performing this step, refer to Table 2-14 for
troubleshooting.
• Frequency cal: Connect the function generator to the front panel INPUT jacks
(Figure 2-6). Set the generator to output a 1V RMS, 1kHz sine wave. Enter
1.000000kHz at the prompt, then press ENTER.
8. Set the calibration dates, then save calibration to complete the process.
Remote manufacturing calibration (firmware A14 and higher)
1. Connect the low-thermal short to the rear panel input jacks, and select the rear inputs
with the INPUTS switch. Allow three minutes for thermal equilibrium.
2. Press in and hold the OPEN key while turning on the power.
3. Enable calibration by sending the :CODE command. For example, the default command
is:
:CAL:PROT:CODE 'KI002010'
4. Initiate calibration by sending the following command:
:CAL:PROT:INIT
5. Calibrate step 0 with the following command:
:CAL:PROT:DC:STEP0
6. Perform the entire remote comprehensive calibration procedure discussed earlier in this
section. (See “Comprehensive calibration” earlier in this section.)
7. Connect the calibrator to the front panel INPUT jacks (Figure 2-5). Select the front input
jacks with the INPUTS switch. Set the calibrator to output a 1V RMS, 10Hz sine wave,
then send the following command:
:CAL:PROT:AC:STEP14 <Cal_voltage>
Here <Cal_voltage> is the actual 10Hz calibrator signal amplitude. If an error is reported
performing this step, see Table 2-14 for troubleshooting.
Table 2-14
1V, 10Hz frequency errors
Revision A13 and lower Revision A14 and higher
1V, 3Hz calibration – No +499 error
– Correct results
– Error +499
– Failed cal step
1V, 10Hz calibration – No +499 error
– Incorrect results
– No +499 error
– Correct results
Calibration 2-23
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