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27 lpal resistance calibration – part i of v, Lpal – AMETEK ReFlex User Manual

Page 347

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Active Loads

ReFlex Power™

7-72

M380056-01 Rev J

7.6.27

LPAL

R

ESISTANCE

C

ALIBRATION

P

ART

I

OF

V

The following procedure calibrates the resistance for voltage gain 8 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.
Connect the sense positive-to-positive lead and sense negative-to-negative
lead. Also connect the shunt and the DC current meter between the active
load and DC power supply

This procedure requires maximum voltage 10.0 V and maximum current
10.0 Amps.

1. Set the DC input voltage to 10 Volts

2. Turn on the active load

INP:STATE 1

3. Set the conductance count to 0xD5554.

CAL:INP:COND:COUNTS 873812

4. After DC voltage stabilizes. Enter the voltage using SCPI

commands

CAL:INP:VOLT 1

5. After DC current stabilizes. Enter the current using SCPI commands

CAL:INP:CURR 1

6. Set the conductance count to 0x1F383.

CAL:INP:COND:COUNTS 0x1F383

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