Ametek Elgar ReFlex Power Operation Manual page 138

ReFlex Power™
14. Wait for the DC voltmeter to stabilize. Make an accurate measurement and then
enter the DC voltage using following command. User should enter the voltage
including sign (Ex: For Negative 4.15631 enter –4.15631)
15. Program to DAC to 0.5% above the middle range
16. Wait for the DC voltmeter to stabilize. Make an accurate measurement and then
enter the DC voltage using following command
17. Perform the DAC Calibration
18. Measure the DC output voltage, if the voltage is not 0.0 ± 10mVolts, read the
DAC offset value with CAL<n>:OUTP:DAC:OFFSET?, and then using the value
returned (a Hex number) as a starting point, "walk" the DC voltage toward 0.0
volts by increasing the value if the DC value is negative, and decreasing the
value if it is positive. One count is ≈ 10mVolts. The command to change the
DAC offset value is CAL<n>:OUTP:DAC:OFFSET <value>.
19. Turn the DC correction loop back on
20. Turn off the unit
21. Send the system error query command to make sure calibration was successful.
22. If there is no error returned at the system error query command then save the
calibration result with the following command
23. Reset the unit
M380056-01 Rev L
CAL<n>:OUTP:DAC:POINT1 <value-1>
CAL<n>:OUTP:DAC:COUNTS 33080
CAL<n>:OUTP:DAC:POINT2 <value-2>
CAL<n>:OUTP:DAC:OFFSET:CALC
CAL<n>:OUTP:DCLOOP ON
OUTP<n>:STATE 0
SYST:ERR?
CAL<n>:UNLOCK "6867"
CAL<n>:STORE
CAL<n>:LOCK
*RST<n>
AC Power Supplies
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