AMETEK M130 - Manual (Page 89)

Sorensen Ethernet Option Calibration
M130/M131 Programming Manual 4-7
4.6 C
URRENT
P
ROGRAMMING
C
ALIBRATION
Attach a high precision shunt between the power supply’s output terminals and attach
a high precision voltmeter across the shunt.
STEP DESCRIPTION
1. Issue a *CLS[n] command.
2. Issue a *RST[n] command
3. Program the overvoltage protection to maximum to prevent nuisance trips:
CAL[n]:OUTP:VOLT:PROT:DAC 65535
4. Program the output voltage to full scale to prevent Constant-Voltage
operation:
CAL[n]:OUTP:VOLT:DAC 65535
5. Program the output of the first calibration point by sending the following
command string from the computer:
CAL[n]:OUTP:CURR:DAC 3275
6. Let the output settle and measure the output current with the current shunt
and the high precision voltmeter; this is value 1.
7. Enter the actual output current of the first calibration point:
CAL[n]:OUTP:CURR:FIVEPOINT 1
8. Program the output of the second calibration point by sending the following
command string from the computer:
CAL[n]:OUTP:CURR:DAC 19000
9. Let the output settle and measure the output current with the current shunt
and the high precision voltmeter; this is value 2.
10. Enter the actual output current of the second calibration point:
CAL[n]:OUTP:CURR:FIVEPOINT 2
11. Program the output of the third calibration point by sending the following
command string from the computer:
CAL[n]:OUTP:CURR:DAC 32000
12. Let the output settle and measure the output current with the current shunt
and the high precision voltmeter; this is value 3.