AMETEK ReFlex - Manual (Page 138)

ReFlex Power™ AC Power Supplies
M380056-01 Rev K 4-53
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)
CAL<n>:OUTP:DAC:POINT1 <value-1>
15. Program to DAC to 0.5% above the middle range
CAL<n>:OUTP:DAC:COUNTS 33080
16. Wait for the DC voltmeter to stabilize. Make an accurate measurement and then
enter the DC voltage using following command
CAL<n>:OUTP:DAC:POINT2 <value-2>
17. Perform the DAC Calibration
CAL<n>:OUTP:DAC:OFFSET:CALC
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
CAL<n>:OUTP:DCLOOP ON
20. Turn off the unit
OUTP<n>:STATE 0
21. Send the system error query command to make sure calibration was successful.
SYST:ERR?
22. If there is no error returned at the system error query command then save the
calibration result with the following command
CAL<n>:UNLOCK “6867”
CAL<n>:STORE
CAL<n>:LOCK
23. Reset the unit
*RST<n>