AMETEK ReFlex - Manual (Page 315)

Active Loads ReFlex Power™
7-40 M380056-01 Rev J
7.6.10
HPAL V
OLTAGE
C
ALIBRATION
– P
ART
III
OF
V
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
INP<n>:STATE 1
2. Set the conductance count to 0x3333
CAL<n>:INP:COND:COUNTS 0x3333
3. Set the input DC voltage to 54 Volts. After the input DC voltage stabilizes
enter the first exact voltage using following command
CAL<n>:INP:VOLT 1 <value-1>
4. Set the input DC voltage to 218 Volts. After the input DC voltage
stabilizes enter the second exact voltage using following command
CAL<n>:INP:VOLT 2 <value-2>
5. Send the calibration command to calculate the gain and offset:
CAL<n>:MEAS:OFFSET:CALC
6. Send the system error query command to make sure calibration was
successful.
SYST:ERR?
7. If there is no error returned at the system error query command then save
the calibration result as follows:
CAL<n>:UNLOCK “6867”
CAL<n>:STORE
CAL<n>:LOCK
8. Reset the unit:
*RST<n>