Wegener Communications Unity RF Switch - Manual (Page 3)

Page 3
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B. INSTALL THE RF SWITCH
See Figure 1 (Page 5) and Figure 2 (Page 5) of this guide for views of the module and its
installation.
1. Remove the block-out plate from the Module where the switch is to be installed.
These screws and holes will be used to mount the RF Switch in a later step. Use the
#1 Philips Screwdriver for this.
2. From the inside of the unit, install the RF Switch into position. The “F” Connectors
should protrude through the rear panel
3. Install one (1) self-tapping screw through the RF Switch Printed Wiring Board
(PWB) into the hole in the bottom of the chassis. Leave it loose at this time. Only
one screw will be used in this step, and which hole is used will depend on the module
slot. This self-tapping screw “cuts” its own threads in the standoff hole, and may
require moderate effort to turn it.
4. Line up the two holes in the rear of the RF Switch Bracket with the holes mentioned
in Step # B1. Insert the self-tapping screws retained in Step # B1 through the receiver
rear panel into the RF Switch Bracket. Tighten these screws snugly, but do not
overtighten.
5. Tighten the Screw inserted in Step # B3 at this time. Do not overtighten.
6. Connect the supplied 10-pin cable from J1 on the RF Switch PWB to the appropriate
connector on the receiver motherboard. If there is a cable from the RF Switch
Expansion Bus to another board (either the Tuner Board or a Relay Board), note its
location and remove that cable. Connect the middle connector of the new cable to the
same connector on the previously installed Board.
7. On most units, the motherboard connector will be labeled “RF Switch Expansion
Bus” or “Relay Expansion Bus,” and should have a number beside it corresponding to
the number in the following table. See
Table 1 , below, for the various models. Make
sure Pin 1 (the Red Line) on each cable connector goes to Pin 1 on each board
connector. If you have any questions about this, contact system network control or
Wegener Customer Service at 770-814-4057. Additional numbers are shown on the
rear cover of this installation guide.
Table 1. Receiver Models and RF Switch Expansion Bus Connector Numbers
Receiver Model Connector Number
UNITY401R J7
UNITY500 J11
UNITY4000 J11
UNITY4422 J16
UNITY5000 J49