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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”
range of compliance voltage 0 V ..
12 V.
2
Connect GND, VCC to power connector
(power source disabled).
Range of VCC 12 V .. 24 V.
Required max. current is about 5.0
A.
3
Connect waveform generator to input
terminal (no pulse before enabling power
supply).
See all section 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 proportionally with the input
signal. Use an oscilloscope with a
1 MEG ohm termination. Scale:
100 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.
Range of VCC 12 V .. 24 V.
10
Feed a signal to the input terminal.
Make sure not to overload the laser
diode!
Содержание LDP-VRM 045-12 CA
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