Hpal Voltage Calibration - Part Iii Ofv - Ametek Elgar ReFlex Power Operation Manual

Active Loads
HPAL V
7.6.10
The following procedure calibrates the voltage for voltage gain 4 and current
range high. Make sure that the shunt and the DC voltmeter are connected
between the positive and negative lead of the active load. Also connect the
sense positive-to-positive lead and sense negative-to-negative lead.
This procedure requires maximum voltage 218V and will draw maximum current
3.0Amps.
1. Turn the active load on
2. Set the conductance count to 0x3333
3. Set the input DC voltage to 54 Volts. After the input DC voltage stabilizes
4. Set the input DC voltage to 218 Volts. After the input DC voltage
5. Send the calibration command to calculate the gain and offset:
6. Send the system error query command to make sure calibration was
7. If there is no error returned at the system error query command then save
8. Reset the unit:
7-40
C
OLTAGE ALIBRATION
INP<n>:STATE 1
CAL<n>:INP:COND:COUNTS 0x3333
enter the first exact voltage using following command
CAL<n>:INP:VOLT 1 <value-1>
stabilizes enter the second exact voltage using following command
CAL<n>:INP:VOLT 2 <value-2>
CAL<n>:MEAS:OFFSET:CALC
successful.
SYST:ERR?
the calibration result as follows:
CAL<n>:UNLOCK "6867"
CAL<n>:STORE
CAL<n>:LOCK
*RST<n>
– P III V
ART OF
ReFlex Power™
M380056-01 Rev L