Hpal Low Range Current Calibration - Ametek Elgar ReFlex Power Operation Manual

Active Loads
HPAL L
7.6.6
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
3. Set the DAC count to 20% of its full range
4. Wait for the DC current to stabilize. After the current reading is
5. Set the DAC count to 80% of its full range
6. Wait for the DC current to stabilize. After the current reading is
7. Send the calibration command to calculate the gain and offset of the
8. Send the system error query command to make sure calibration was
9. If there is no error returned at the system error query command then
10. Reset the unit
7-36
R C
OW ANGE URRENT
INP<n>:STATE 1
CAL<n>:INP:CURR:COUNTS 16000
stabilized, enter the current using following command
CAL<n>:INP:CURR1 <value-1>
CAL<n>:INP:CURR:COUNTS 53000
stabilized, enter the current using following command
CAL<n>:INP:CURR2 <value-2>
low range current calibration
CAL<n>:INP:CURR:CALC
successful.
SYST:ERR?
save the calibration result with the following command
CAL<n>:UNLOCK "6867"
CAL<n>:STORE
CAL<n>:LOCK
*RST<n>
C
ALIBRATION
ReFlex Power™
M380056-01 Rev L