Ametek Elgar ReFlex Power Operation Manual page 137

AC Power Supplies
DAC O
4.6.7
This procedure calibrates the voltage DAC of the power supply.
1. Connect the meter between the output and the output return lead.
2. Set the voltmeter to read the DC voltage.
3. Ensure that no load is connected to the output.
4. Issue clear and reset commands:
5. Set the voltage range of the power supply to high
6. Set the OVP supervisory to limit 12000
7. Set the OCP supervisory to maximum limit.
8. Set the voltage to zero
9. Set the current to maximum limit
10. DAC range is from 0 to 65535. Therefore set the DAC at the middle of the range
11. Turn the unit on
12. Set the DC loop off
13. Program the DAC to 0.5% below the middle range
4-52
C
FFSET ALIBRATION FOR
*CLS
*RST<n>
SOUR<n>:VOLT:RANGE 1
CAL<n>:OUTP:VOLT:PROT:COUNTS 12000
CAL<n>:OUTP:CURR:PROT:COUNTS 4000
CAL<n>:OUTP:VOLT:COUNTS 0
CAL<n>:OUTP:CURR:COUNTS 4000
CAL<n>:OUTP:DAC:COUNTS 32768
OUTP<n>:STATE 1
CAL<n>:OUTP:DCLOOP OFF
CAL<n>:OUTP:DAC:COUNTS 32456
V R
OLTAGE ANGE
ReFlex Power™
H
IGH
M380056-01 Rev L