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Current measurement/readback calibration, Current measurement/readback calibration -4, 5 current measurement/readback calibration – AMETEK SFA Series Programming Manual User Manual

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SCPI STATUS IMPLEMENTATION

Sorensen SF Series

4.

Let the output settle and measure the current with the current shunt and the meter.

5.

Enter the actual output current corresponding to the DAC value 9830 of the first
calibration point:

CAL:OUTP:CURR:

POINT 1

6.

Program the output of the second calibration point to approximately 85% of full scale
current by sending the following command string from the computer:

CAL:OUTP:CURR:DAC 55700

7.

Let the output settle and measure the current with the current shunt and the meter.

8.

Enter the actual output current corresponding to the DAC value 55700 of the second
calibration point:

CAL:

OUTP:CURR:POINT 2

9.

Reset the output current to 0 amps.

CAL:

OUTP:CURR:DAC 0

10. Program the DIA to calculate the output current calibration gain and offset values:

CAL:

OUTP:CURR:CALC

11. Program the DIA to unlock the non-volatile memory for calibration value storage:

CAL:

UNLOCK “6867”

12. Program the DIA to store the calibration values in non-volatile memory:

CAL:

STORE

13. Program the DIA to lock the non-volatile memory for calibration value protection

CAL:

LOCK

14. The output current calibration is complete. The unit may be turned OFF or other

calibration procedures may be performed.

4.5 Current Measurement/Readback Calibration

STEP DESCRIPTION

1.

Program the overcurrent protection to maximum to prevent nuisance trips:

CAL:OUTP:CURR:PROT:DAC 65535

3.

Program the output of the first calibration point to approximately 15% of full scale current
by sending the following command string from the computer:

CAL:OUTP:CURR:DAC 9830

4-4 M550292-03

(Programming)