5
How to get started
The basic settings (scaling and BIAS current etc.) can be adjusted by
potentiometer.
Bias set a dc output current up to 1.6 A without connecting input signal.
You need an additional waveform generator which has to be connected to the
input terminal. There is no AWG included within the driver!
Step
What to do
Check
1
Solder a dummy diode between LD+ and
LD-. Alternatively make a short circuit
there.
See section “Test Load”
2
Connect GND, VCC to power connector
(power source disabled).
VCC 24 V
3
Connect waveform generator to input
terminal (no pulse before enabling power
supply).
See all sections discussing input
(connector #2).
4
Enable the power source.
5
Adjust scaling and bias.
See potentiometer for scaling a
bias.
6
Feed a signal on the input terminal. For
example 1 kHz sine wave with 1 V
amplitude.
Make sure not to overload the
laser diode or the driver.
Range of input signal 0 V .. 5 V.
7
Monitor the current output.
The current monitor measures a
signal comparable with the input
signal. Use an oscilloscope with a
1 MEG ohm termination. Scale 165
mV/A.
8
Disable the input signal and turn off the
power source.
Remove the test diode or bypass and
assemble the final laser diode.
9
Turn the power supply for the VCC on
again.
VCC 24 V.
10
Feed a signal to the input terminal.
Make sure not to overload the
laser diode!
Required Laser Diode Pinout
The LDP-VRM 025-100 CA is designed for a direct connection to almost all kinds of laser
diodes. The laser diode can be connected directly by a screw terminal.
Summary of Contents for LDP-VRM 025-100 CA
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