Chapter 2 Setup And Operation; Connections - THORLABS IP500 User Manual

IP500 Laser Diode Controller

Chapter 2 Setup and Operation

2.1.

Connections

Wiring harnesses have been provided to make the proper connections from the
IP500 to its power source and the laser diode to be driven. One harness has a
three-pin connector mate the other has a four-pin connector mate.
The wire harness made with the 3-pin connector should be connected to J1 of the
IP500 and the ±5 V power supply. Connect to the power supply as follows:
Jumper
J1-1
J1-2
J1-3
The wire harness made with the 4-pin connector should be connected to J2 of the
IP500 and the Laser Diode to be driven. Connect the Laser Diode as follows:
Jumper
J2-1
J2-2
J2-3
J2-4
Note: Either the monitor photodiode cathode or monitor photodiode anode MUST
be connected to ground somewhere in this system. Typically this is done at the
laser diode package itself on a common pin. To eliminate errors due to wire losses,
always return the photodiode ground connection on the wire provided. Do not use
a common wire for the photodiode and laser diode ground currents.
If the photodiode is completely isolated from the laser diode, install a wire jumper
into J3 of the IP500 to fix the ground connection to the photodiode cathode.
Refer to Figure 1 on Page 3 for the schematic diagram detailing the laser diode
connections and the correct setting for the JMP1 ground jumper.
Page 2
Power Supply
Wire Color
Red
Black
Yellow
Wire Color
Laser Cathode of Anode Grounded Diode or
Purple
Black Laser Anode Ground or Laser Cathode Ground
Black
Orange
Designation
Common
Laser Diode
Designation
Laser Anode of Cathode Grounded Diode
Monitor Photodiode Cathode
Monitor Photodiode Anode
Chapter 2: Setup and Operation
+5 V
-5 V
3037-D02