2. 9-Pin connector definition
The 9-pin (DB9 male) connector at the laser drive device serves for controlling signals and
power lines.
2.1.
Pin 1, 2, 6: Power supply negative terminals (circuit signal ground, signal return
terminals). They must not be grounded (to earth).
2.2.
Pin 3: A digital input terminal to enable/disable laser-beam output (TTL modulation).
It is a TTL level active (a high, 5V, to enable laser-beam output, a low to disable laser
output). Modulation frequency: ≤ 10Hz. Input impedance: 1 k ohms
2.3.
Pin 4, 5: Power supply positive terminals. They must not be connected to chassis
(device case). The power supply output range: 4.75 to 5.25 Volts at 5 Amperes, noise
ripple: ≤ 50mV
2.4.
Pin 7: An input terminal to enable laser-beam output. It is a TTL low level active
(connected to power negative terminal to turn laser beam on).
2.5.
Pin 8: An input terminal to set laser-beam power-output level. Input 0 to 5 Volts
corresponds to 0 to maximum laser-beam power-output. Specific information shows
in the laser test report. Input impedance: 50 k ohms.
2.6.
Pin 9: Current monitoring. An output terminal to indicate laser-beam output power
level. The output voltage range is: 0 to 5 Volts. This is maximum level of power output
for a typical 50 mW laser corresponding to voltage range: 0.4-0.6VDC. The output
impedance is 100 ohms.
3. Installation
3.1.
The laser head mounting plate should be coated with as thin as possible layer and
evenly distributed thermal material (such as thermal grease), and mounted in the
best contact possible onto a heat sink with sufficient dissipation. Ensure even
torque from all the mounting screws is used.
3.2.
Connect the 15 pin laser connector from the laser head to the matching receptacle
on the driver module. Secure the connections by tightening the two locking screws.
3.3.
Connect the power terminals at 9-pin connector to a 5VDC power supply. The pins
4 and 5 of the 9-pin connector connect to the positive terminal of the power supply;
and the pins 1, 2, and 6 to negative.
3.4.
Make connection for pins 3, 7, and 8 at the 9-pin connector. Pin 3 connects to
positive 5VDC power terminal, pin 7 to negative power terminal (signal ground), and
pin 8 to positive 5VDC power terminal.
Note: The pin 9 at the 9-pin connector can be floating if not needed.
313 Enterprise Drive Plainsboro, NJ 08536
Tel: +1 (732)
230-1601
Web:
www.ipslasers.com
290020438-B
(2021/01/14)
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