Rear panel options, Intercom line termination (ms-704), Short-circuit and and overload conditions – Clear-Com RM-704 User Manual
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M S - 7 0 4 / R M - 7 0 4 F O U R - C H A N N E L M A I N / R E M O T E S T A T I O N S
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3. Repeat the adjustment for all four channels on the station.
4. Adjust the sidetone adjust control for the desired amount of sidetone
in the headset.
•
CHANNEL PROGRAM FEED LEVEL: Beside the null control for
each channel there is a control marked PGM, which adjusts the amount of
program being sent to that channel.
Each channel has two program sources:
1. The main program that is input from the rear panel XLR connector
may be enabled for a given channel with the program on/off DIP
switches for the channel.
2. The auxiliary input connector has four individual program inputs for
each channel. These inputs cannot be disabled with front-panel DIP
switches.
REAR PANEL OPTIONS
This section describes the switches on the rear panel. These switches and
controls are usually set and not used in daily operation of the unit.
INTERCOM LINE TERMINATION (MS-704)
The MS-704 has switch-selectable intercom line termination networks. The
RM-704 is a remote station and therefore does not have terminating networks
available. If more than one MS-704 (or any other master station) is installed
on the same intercom line, then all of the terminations in all of the stations
except one must be disabled.
CAUTION:If the link function is to be used on an MS-704 and there is more
than one MS-704 in the system, it can only be used on the unit
that provides termination.
The terminations are enabled or disabled with switches on the rear panel.
Each channel is marked clearly on the panel. Set the switches to the off
position to disable the terminations in the station. The MS-704 is shipped
from the factory with all four lines terminated.
SHORT-CIRCUIT AND AND OVERLOAD
CONDITIONS
If a short circuit condition appears on any of the four intercom lines, the sense
circuitry for that line will disconnect the DC power to that line only and the
red “short” light for that channel will be on. After as little as 1/2 second, the
MS-704 will attempt to turn power on again. This allows momentary short or
overload conditions to clear automatically.
If the red “short” light remains after repeated automatic or manual attempts to
restore power, then there is either a short on that intercom line or too many
intercom stations have been connected to that intercom line. In this case,