ILX Lightwave LDX-3500 Series User Manual page 43

M A I N T E N A N C E
3
C H A P T E R
Calibration Adjustments
• After the value on the display is stable (has not changed by more than one digit for several
seconds) the LDX-3500 Series Precision Current Source is ready for the actual I
be entered.
Press and hold in the ADJUST ENBL switch and turn the ADJUST knob until the display
shows the correct value, as shown on the calibrated ammeter (or the calculated monitor
current value from Step a).
• Release the ADJUST ENBL switch to store the first calibration value. The LDX-3500 Series
Precision Current Source will then set the second calibration current (power), approximately
one-fourth of the original current. (For example, if the first calibration set point was 4.000 mW
(mA), the second set point will be about 1.000 mW (mA). Calculate the second calibration
current as in Step a.
After the value on the display is stable (has not changed by more than one digit for several
seconds) the LDX-3500 Series Precision Current Source is ready for the second actual I
value to be entered.
When it the set point value is stable, press and hold in the ADJUST ENBL switch and turn the
ADJUST knob until the display indicates the same current as calculated in Step f.
• Release the ADJUST ENBL switch to accept the second calibration point. After the ADJUST
ENBL switch is released, the LDX-3500 Series Precision Current Source will calculate the
calibration constants. After this, the LDX-3500 Series Precision Current Source will store all
the calibration constants into non-volatile memory and then return to its former (before
calibration) state. The output remains on after calibration. Repeat this procedure for the
higher output current range.
28
LDT-5525
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
value to
PD
PD