Calibration And Troubleshooting; Calibration Overview - ILX Lightwave LDX-32420 User Manual

6
C H A P T E R
C T
ALIBRATION AND ROUBLESHOOTING

This chapter describes calibration of your LDX-32420 Series Current Source.
Descriptions of the required test instruments, calibration conditions, and the
detailed procedures for calibration of the instrument's Laser Diode Current Source
are included. A troubleshooting guide is also offered for some of the more
common failure symptoms.

Calibration Overview

There are several calibrations to be performed to completely calibrate your
LDX-32420 Current Source. The calibration consists of calibrating the current
source in both ranges and both modes (low and high bandwidth), calibrating the
photodiode monitor current measurement and finally the forward voltage
measurement. The current limits are calibrated internally by the instrument as
part of the calibration process.
Your LDX-32420 Current Source can be calibrated with the case closed.
Calibration is recommended every 12 months. Calibrate the instrument under
laboratory conditions. We recommend calibration at 23°C ± 1.0°C. When
necessary, however, the LDX-32420 Current Source may be calibrated at its
intended use temperature if this is within the specified operating temperature
range of 0 to 40°C.
Finally, the LDX-32420 Current Source should be allowed to warm up for at least
one hour before calibration.
73
LDX-32420
