Elgar SW5250A Service Manual download pdf (Page 68)

CALIBRATION TW SERIES

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Program the TW to 160 Hz using the string below:

SOUR{1,2,3}:FREQ 160

Wait until the power analyzer has stabilized and record the current reading as RDNG3.

Query the TW’s current using the GPIB string below, and record this value as MEAS3.

MEAS{1,2,3}:CURR?

Program the TW to 320 Hz using the string below:

SOUR{1,2,3}:FREQ 320

Wait until the power analyzer has stabilized and record the current reading as RDNG4.

Query the TW’s current using the GPIB string below, and record this value as MEAS4.

MEAS{1,2,3}:CURR?

Program the TW to 500 Hz using the string below:

SOUR{1,2,3}:FREQ 500

Wait until the power analyzer has stabilized and record the current reading as RDNG5.

Query the TW’s current using the GPIB string below, and record this value as MEAS5.

MEAS{1,2,3}:CURR?

Program the TW to 60 Hz and open the output relay using the strings below:

SOUR{1,2,3}:FREQ 60

OUTP OFF

Calculate the calibration constants using the following equations:

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:REM:LOR:CURR:FREQCAL VALUE1 VALUE2 VALUE3 VALUE4 VALUE5

CAL{1,2,3}:MEAS:LOC:LOR:CURR:FREQCAL VALUE1 VALUE2 VALUE3 VALUE4 VALUE5

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Elgar SW5250A Service Manual Page 68