Rear panel connectors, Rear panel connectors -6 – Clear-Com PS-704 User Manual
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P S - 7 0 4 F O U R - C H A N N E L P O W E R S U P P L Y
1 - 6
1
POWER SWITCH: Switches the AC power to the PS-704 on and off.
When in the on position, the LED indicator to the left of the switch should
illuminate. Check the short indicators for evidence of system
malfunctions.
3
PROGRAM SEND ON/OFF: These toggle switches, one for each
channel, connect program audio to that channel. The number of active
sends will not affect the overall send level to any channel.
4
PROGRAM SEND LEVEL: These potentiometers, or trim pots (one for
each channel), adjust the level of program heard in that channel. The
program switch must be on for the control to function on that channel.
(The level controls work in conjunction with the program in [6] level
control on the rear panel.) For a higher program level, turn the control
clockwise. For less program level, turn the control counter-clockwise. If
the control is all the way up on a channel and the program level in the line
is not loud enough, increase the input level with the program in control on
the rear panel. Conversely, if there is still program heard on a channel
when its level is all the way down, decrease the program in level. Any
change in the program in level control on the rear panel to adjust for one
channel will necessitate adjustment on the other channels to compensate.
6
PROGRAM INPUT LEVEL ADJUSTMENT (rear panel): Use this
trim pot to adjust the overall input level of the external program. Turn the
control clockwise to increase the gain and counter-clockwise to reduce it.
Note: Do not force the trim pots past their stop points as this will
damage them.
7
TERM ON/OFF: These toggle switches activate the termination for their
respective channel when switched to on. These should always be on
unless there are other power supplies or terminated main stations in the
system. If there are other possible terminations in the system, it must be
decided where each channel’s single termination will be.
REAR PANEL CONNECTORS
5
PROGRAM INPUT: This 3-pin female XLR jack accepts a balanced or
unbalanced line-level signal. This is typically a feed from an audio board,
an air feed from a studio to remote site over a phone line, or an audio cue
track. Send levels to the individual channels are controlled with a
combination of the program in level and the program send levels on the
channels.
8
INTERCOM LINE CONNECTOR: There are two 3-pin male XLR
jacks per channel, wired in parallel, or looped through. All the stations in
the system are ultimately connected to the station through these jacks.
Because intercom audio is two-way, they are neither inputs nor outputs,
but may be thought of as “ports.” Pin #1 is connected to the shield and
carries the signal ground. Pin #2 carries the DC voltage that runs the
remote stations. Pin #3 carries two-way audio and call signals.