User's Manual

Weehawken Tunnel UHF Repeaters
User/Maintenance Handbook
Handbook N.-Weehawken_UHF Issue No:-A
Date:-05/08/05
Page:-
56 of 72
7.12 D.I.P Channel Control Module (17-002101)
7.12.1 Description
The operating frequency for each channel in each repeater is programmed by 16 DIL (Dual
In Line) switches. The programming switches are mounted in the Channel Control Module.
The Channel Selectivity Modules are connected to the Channel Control Module via multi-
way ribbon cables.
Adjacent to the DIL switches for each channel is a toggle switch to turn on and off
individual channels as required. A green LED indicates the power status of each channel.
A red LED shows the alarm condition for each channel. An illuminated alarm LED
indicates that the synthesiser has not achieved phase lock and that the module is disabled.
There is a problem which requires investigation, often a frequency programmed outside the
operating frequency range.
The following information is necessary before attempting the programming procedure.
1) operating frequency
2) synthesiser channel spacing (step size)
3) synthesiser offset (IF)