Chapter 3 Setup - THORLABS SPDC810N User Manual

Narrowband Photon Pair Source
Chapter 3 Setup
Before Starting
All users should read and understand the safety information in this manual before operating the equipment. If
equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may
be impaired.
Setting the AC Line Voltage
The SPDC810N has been shipped configured for 100 to 240 VAC operation. There is no end user adjustment of the
line voltage for 110 or 220 VAC. The user needs to select the correct AC cord for their location.
Changing the Fuse
To change the power fuse, follow the following steps.
1. Remove the AC power cord if it is connected to the unit.
2. Locate the fuse tray directly adjacent to the AC power cord connection on the rear panel of the unit.
3. Carefully use a flat blade screwdriver to open the fuse tray.
4. Remove the existing fuses and install two fuses with the appropriate specifications. The replacement fuses
must be 5 mm x 20 mm, 2 A, 250 VAC, slow‐blow type.
5. Push the fuse tray back into place making sure that it snaps and seats correctly.
6. Connect the appropriate power cord into the AC receptacle and plug the unit in.
Initial Setup
1. Set the unit on a dry, level working surface.
2. Make sure the POWER push‐button switch on the front of the unit is in the OFF position.
3. Plug the female end of the provided AC line cord into the IEC input receptacle on the rear of the unit. Plug
the male end into a properly grounded AC socket.
4. Install the interlock BNC connector. (See Section 6 for details on the interlock circuitry.)
5. Connect the uncoated ends of each of the patch cables to the signal and idler outputs, carefully cleaning
both the input FC bulkhead connector and the patch cable connector beforehand. Please note that while
the unit ships with Polarization Maintaining (PM) patch cables, standard single mode (SM) cables can be
used, depending on the application.
6. Carefully inspect and clean, if necessary, the AR coated ends of each of the cables. Avoid using a dry cloth
on these ends to prevent damage to the coating. (See Section 8.2 for more details on cleaning.)
7. The included AR coated patch cables are meant for a free space application. If your application is instead
fiber based, connect your cables directly to the unit instead of using the included patch cables, ensuring
compatibility with the FC/PC outputs.
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Chapter 3: Setup
TTN271994‐D02