AMETEK ReFlex - Manual (Page 311)

Active Loads ReFlex Power™
7-36 M380056-01 Rev J
7.6.6 HPAL L
OW
R
ANGE
C
URRENT
C
ALIBRATION
The following procedure calibrates the input current for the current range
low. Make sure that the shunt and the DC current meter are connected
between the active load and DC power supply.
This procedure requires maximum voltage 5.0V and maximum current 1.0
Amps.
1. Set the DC input voltage to 5 Volts
2. Turn on the active load
INP:STATE 1
3. Set the DAC count to 20% of its full range
CAL:INP:CURR:COUNTS 16000
4. Wait for the DC current to stabilize. After the current reading is
stabilized, enter the current using following command
CAL:INP:CURR1
5. Set the DAC count to 80% of its full range
CAL:INP:CURR:COUNTS 53000
6. Wait for the DC current to stabilize. After the current reading is
stabilized, enter the current using following command
CAL:INP:CURR2
7. Send the calibration command to calculate the gain and offset of the
low range current calibration
CAL:INP:CURR:CALC
8. Send the system error query command to make sure calibration was
successful.
SYST:ERR?
9. If there is no error returned at the system error query command then
save the calibration result with the following command
CAL:UNLOCK “6867”
CAL:STORE
CAL:LOCK
10. Reset the unit
*RST