Clear-Com PS-704 - Manual (Page 10)

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 - 4
to use the isolated power provided by the PS-704. Refer to Chapter 2‚
“Installation.”
• LOW NOISE CIRCUITRY: The direct current outputs of the PS-704
contain very little hum and noise. The PS-704 does not contribute to
audible noise in the remote stations and beltpacks.
Note: Power supply lines connected together at remote stations will disable
the individual channel short circuit protection feature.
PS-704 OVERALL DESCRIPTION
A brief description of the connectors and controls follows. (Refer to Figure
1-2.)
Figure 1-2: Front and Back Panels of PS-704
FRONT PANEL
1. POWER SWITCH: Switches the AC power to the PS-704 on and off.
The adjacent green LED will illuminate when the power is on.
2. OVERLOAD INDICATORS: The respective red LED for each channel
(A, B, C, D) will illuminate if the PS-704 senses a short or overload on
that channel. When the fault is removed, the PS-704 will automatically
reset and the LED will go out.
3. PROGRAM SEND: Slide switch on each channel (A, B, C, D) selects
that channel to receive the program input coming into the PS-704. All
channels receive the same signal from the rear panel program input.
4. PROGRAM SEND LEVEL: Trimpot adjusts the audio level of the
program sent to its respective channel.
REAR PANEL
5. PROGRAM INPUT: Female 3-pin XLR jack accepts a balanced or
unbalanced line-level input.
6. PROGRAM INPUT LEVEL: Adjusts the program level coming into
the PS-704. Used with the program send level controls to achieve desired
system program levels.
Send
Level Overload
Program
On Off
Channel A
Power
PS-704
Send
Level Overload
Program
On Off
Channel B
Send
Level Overload
Program
On Off
Channel C
Send
Level Overload
Program
On Off
Channel D
PROGRAM INPUT
LEVEL
ADJUST
CHANNEL D
TERM
D
ON OFF
CHANNEL C
TERM
C
ON OFF
CHANNEL B
TERM
B
ON OFF
CHANNEL A
TERM
A
ON OFF
PS-704
1 2 3 4
5 8 9 7
4-Channel
Power Supply
6
Output: 30V, 1.2A Continuous, 2A Peak