943-227-15 Digital Preamplifier
Operator Manual
Detector Field Cable Preparation,
Prior to terminating the cable, the field conduit must be run to the junction box, and the field cable pulled into the junction box.
To prepare the cable for termination, a minimum of 7 inches of the cable outer jacket must be stripped off the cable. This will allow for the stripping of approximately one inch from the various conductors, and provide 6 inches of actual service loop cable. In addition, for EMI/RFI protection, the drain wire must be terminated to an earth ground within the enclosure. The length of the drain wire will be based on the distance between the UDR rear panel and the ground location. The length of cable jacket to be stripped will then be based on the distance to the drain wire grounding point.
Once the cable outer jacket is stripped to the proper length, the aluminum tape shield and Mylar binder may be removed, taking care not to damage the No. 20 AWG drain wire. The drain wire may then be separated from the remaining conductors, for routing and termination at the grounding point.
Next, the HV coaxial cable may be separated from the bundle, followed by the single conductors wires that are required for the specific application, and the polyester filler cord. Refer to the project specific detector loop drawing, or the generic detector loop drawing provided in Appendix B for actual conductors to be used. The ring lug connectors may now be applied to the single conductor cables, and installed in accordance with the project electrical loop diagram.
Trim each conductor as required to reach its assigned terminal point. Allow a minimum of 1 in. spare conductor for future
The terminal block is designed to accept a maximum 14 AWG conductor, and is provided with
The mating HV connector, P/N
The polyester filler cord may now be removed. Cut the cord as close to the outer jacket as possible