AMETEK ReFlex - Manual (Page 137)

AC Power Supplies ReFlex Power™
4-52 M380056-01 Rev K
4.6.7 DAC O
FFSET
C
ALIBRATION FOR
V
OLTAGE
R
ANGE
H
IGH
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:
*CLS
*RST
5. Set the voltage range of the power supply to high
SOUR:VOLT:RANGE 1
6. Set the OVP supervisory to limit 12000
CAL:OUTP:VOLT:PROT:COUNTS 12000
7. Set the OCP supervisory to maximum limit.
CAL:OUTP:CURR:PROT:COUNTS 4000
8. Set the voltage to zero
CAL:OUTP:VOLT:COUNTS 0
9. Set the current to maximum limit
CAL:OUTP:CURR:COUNTS 4000
10. DAC range is from 0 to 65535. Therefore set the DAC at the middle of the range
CAL:OUTP:DAC:COUNTS 32768
11. Turn the unit on
OUTP:STATE 1
12. Set the DC loop off
CAL:OUTP:DCLOOP OFF
13. Program the DAC to 0.5% below the middle range
CAL:OUTP:DAC:COUNTS 32456