Rev. 01/2021
5
How to get started
(refer to drawings on next 2 pages)
Step
What to do
Check
1
Unpack your device and place it in front
of you as shown on the next page.
2
Connect a load (for example your laser
diode) to the output.
Make sure to use both anode
and cathode connectors in
parallel.
3
The following connectors refer always to
the BOB connector (vertical PWB).
Set pin 8 (master enable) to high
(+ 5 V). In order to do this, you
may connect pin 8 to pin 2 (+5 V).
This master enable feature is used
for the safety shutdown of the
laser.
4
If you do not use your driver as a stand
alone module, please connect it to the
PLB or PC.
Use the Ethernet or the PLB-21
connector.
5
Set pin 7 (enable/disable driver) to low
(0 V)
For start up this input must be
low.
6
Connect the input power supply. Make
sure that polarity is correct. The supply
voltage must be at least 12 V and about 4
V above your diode’s compliance voltage.
If the red LED (on the upper right of the
vertical board – see next side) flashes 4
times, it indicates that the supply voltage
is too low.
Make sure that your power
supply does not have any
voltage overshoots when switching
on or off. Do not exceed the
maximum permitted voltage of
48V
7
Set the required current.
If you use the plain driver, apply a voltage
to pin 10 (input analog).
If you use a PLB or a PC, set the current
via the corresponding commands.
The conversion scale is 50 A/V. So
in order to set a current of 25 A,
you would apply a voltage of
0.5 V.
8
Set pin 7 (enable driver) to high.
This starts the driver operation.
9
If you use a pulsed trigger mode (default),
apply your trigger pulses to input pin 6.
Input impedance is 10 kΩ
For pulse parameters see
corresponding datasheets.
10
Monitor the output current with an
oscilloscope on pin 9 or the compliance
voltage on pin 4.
Use pin 3 or pin 5 for ground.
Scales:
50 A/V for current (pin 9)
0.1 V/V for voltage (pin 4)
11
Verify that pin 1 is on 0 V.
No internal error, unit works fine.
