Remote High Range Watts Frequency Calibration - Cal Power TrueWave TW5250 Service Manual

CALIBRATION
Calculate the calibration constants:
VALUE1 = RDGN1/MEAS1
VALUE2 = RDGN2/MEAS2
VALUE3 = RDGN3/MEAS3
VALUE4 = RDGN4/MEAS4
VALUE5 = RDGN5/MEAS5
Update the TW's calibration data:
CAL{1,2,3}:MEAS:LOC:HIR:WATT:FREQCAL VALUE1 VALUE2 VALUE3 VALUE4 VALUE5

3.30 REMOTE HIGH RANGE WATTS FREQUENCY CALIBRATION

Connect the 48 ohm resistor to the output of the TW through the power analyzer. Set
up the power analyzer to measure watts.
Set up the TW to AC coupling, high range, remote sense, 40 Hz, 6.5 ampere current
limit, output relay closed and 240 volts with the following GPIB programming strings:
OUTP:COUP AC
SOUR:VOLT:RANGE HIGH
SOUR:SENSE REMOTE
SOUR:FREQ 40
SOUR{1,2,3}:CURR 6.5
OUTPUT ON
SOUR{1,2,3}:VOLT 240
Wait until the power analyzer has stabilized and record the watts reading as RDNG1.
Query the TW's watts using the GPIB string below, and record this value as MEAS1.
MEAS{1,2,3}:POW?
Program the TW to 80 Hz using the string below:
SOUR{1,2,3}:FREQ 80
Wait until the power analyzer has stabilized and record the watts reading as RDNG2.
Query the TW's watts using the GPIB string below, and record this value as MEAS2.
MEAS{1,2,3}:POW?
Program the TW to 160 Hz using the string below:
SOUR{1,2,3}:FREQ 160
3-42
TW SERIES