5525 Production Calibration Procedure - ILX Lightwave LDT-5525 User Manual

5525 Production Calibration Procedure

LDT-5525 POST BURN-IN CALIBRATION
I. Ite Current Calibration
1_______ Set the sensor select switch to "100 uA" and set C1 to 0.99, C2 to 2.57.
2_______ Connect the output to the TEC Cal/Test Fixture, and set the TEC Cal/Test Fixture for ITE calibration.
3_______ Set the DMM to measure DC volts.
4_______ Hold down both the "MODE" and "DISPLAY" buttons. This will put the 5525 into "ITE CAL" mode.
5_______ Wait until the output has settled to about 3 Amps, usually about 3 seconds.
6_______ Read the voltmeter, and calculate Ite: Ite = Vmeter / Rcal.
7_______ Hold down the "ENBL" button and turn the knob until the display reads the calculated Ite.
8_______ Release the "ENBL" button.
9_______ Allow the Ite current to settle at the new point ( -3 A), again about 3 seconds.
10______ Read the voltmeter, and calculate Ite.
11______ Hold down the "ENBL" button and dial in the new current.
12______ Release the "ENBL" button.
13______ Allow the Ite current to settle at the new point ( +3A).
14______ Calculate the actual Ite current.
15______ Hold down the "ENBL" button and dial in the calculated current.
16______ Release the "ENBL" button.
17______ Allow the Ite current to settle to the new point ( +1 A).
18______ Calculate the actual Ite current.
19______ Hold down "ENBL" and dial in the calculated current.
20______ Release "ENBL".
21______ Allow Ite to settle to the new point (-1 A).
22______ Calculate Ite.
23______ Hold down "ENBL" and dial in the calculated current.
24______ Release "ENBL".
25______ Allow Ite to settle to the new point (-3 A).
26______ Calculate Ite.
27______ Hold in "ENBL" and dial in the calculated current.
28______ Release "ENBL".
29______ Wait for the automatic limit cal procedure to complete - about 10 seconds.
30______ Check the calibration: set the limit to 4A; adjust the Ite control while checking the actual current. Test
Ilim cal: set Ite to 4A, adjust Ilim from 4A down to 0A. Repeat check of Ilim cal for Ite set = -4A.
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Calibration can be terminated at any time by pressing the "OUTPUT" button. This will stop cal; no constants will
be saved to EEPROM.
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