AMETEK ReFlex - Manual (Page 164)

ReFlex Power™ AC Power Supplies
M380056-01 Rev K 4-79
4.6.22 H
ALL
C
ALIBRATION FOR
V
OLTAGE
R
ANGE
L
OW
(1.2 KH
Z
U
NIT
)
This procedure calibrates the hall gain sensor of the power supply for the 1.2KHz
AC unit only.. This is a seven-point calibration procedure.
1. Close the switch between the power supply and the resistive load.
2. Connect the meter between the output and adjustable resistive load.
3. Set the voltmeter to read the AC current.
4. Ensure that load is connected to the output.
5. Issue clear and reset commands:
*CLS
*RST
6. Set the voltage range of the power supply to low
SOUR:VOLT:RANGE 0
7. Turn the unit on
OUTP:STATE 1
8. Set the hall calibration data to the default value
CAL:OUTP:FREQ:CURR:DEFAULT
9. Set the output voltage to 120 Volts
SOUR:VOLT 120
10. Set the output current to 6.3 Amps
SOUR:CURR 6.3
11. Turn on the resistive load and adjust the load until the output voltage is 110 Volts,
this will ensure that the AC supply is in Constant Current Mode.
12. Set the output frequency to 60Hz
SOUR:FREQ 60
13. Wait for AC current to stabilize. Measure the output current using the AC current
meter. Enter the measured current using following command
CAL:OUTP:FREQ:CURR1