Monroe Electronics R177 - Manual (Page 6)

6
Installation
The R177 units are designed to mount on the rear of a standard 19-inch equipment
rack.
Mount the Master Stereo unit, R177M, onto the equipment rack near the audio signal
sources requiring stereo switching.
Mount the Slave Monaural units, R177S, onto to the equipment rack near the signal
sources they will be switching.
Connect the wires from the power supplies to each unit, 12 or 16 VAC (Refer to * note
on page 4.) on the screw terminal header. No specific polarity needs to be observed
when connecting the first power supply, however, all subsequent supplies must
be connected with the same wire orientation as the first supply.
Connect the Audio Outputs from the MIP 921e to the Audio Inputs + and – on the screw
terminal header of the Master unit. A Chassis Ground connection is supplied for a
shield wire.
Connect the EAS Audio Out +, –, and GND connections on the screw terminal header
of the Master unit to the EAS Audio In of the first Slave Monaural unit as detailed in
Figure 1. If using a Master unit as a Slave Stereo unit refer to Figure 2 on the following
page. Connect all remaining Slave units to each other in the same manner, as
indicated in Figure 1 or 2 on the following page.
Connect the CEMS 0500 Character Generator Video Out to the EAS Video Loop input
on the Master unit. Connect the Video Loop Output to the first Slave unit Video Loop
Input. For all subsequent Slave units in the chain, connect the Output from the
preceding unit to the Input of the unit being added.
Connect the program audio source inputs to the left and right Audio inputs for each
switch set as labeled on the panel. Connect the Video Inputs and Outputs in the same
manner. Refer to Figure 3 on page 7.
To complete the connection 600
Ω
terminators or resistors must be installed across the
EAS Audio In + and – terminals on the Master unit and also across the EAS Audio +
and – terminals on the last Slave unit in the chain. Refer to Figures 1 and 2 on the
following page.
Tie the VIDEO and AUDIO terminals at the end of the R-177M terminal strip together
and connect to the CEMS 0500 Character Generator at RELAY 1 – NO. Connect GND
on the terminal strip to RELAY 1 – COM on the CEMS 0500.