Clear-Com PS-702, Инструкция по эксплуатации

Страница: 10 / 28

P S - 7 0 2 T W O - C H A N N E L P O W E R S U P P L Y
1 - 4
FRONT AND REAR PANELS
A description of the connectors and controls follows (Figure 1-2 on page 1-4).
Figure 1-2: Front and Read Panels
FRONT PANEL
1. POWER SWITCH: Turns the AC power to the PS-702 on and off. The
green power light will illuminate when the power is on .
2. SHORT/OVERLOAD INDICATORS: If a short circuit or overload
condition appears on either of the intercom channel outputs, the red
short/overload light for that channel will illuminate. If this condition
persists, the microprocessor will disconnect power to that channel and the
red short / overload light will blink. If a red short/overload light is
blinking, the fault on that channel must be located and removed. When
the fault is removed, the PS-702 will restore power to that channel and the
short/overload light will go out. If there are no shorts, but the
short/overload light blinks, an overload exists, possibly due to too many
intercom stations connected on that intercom line.
If the failure continues, unplug the intercom line connected to the affected
channel. Its red
short/overload light should go out. This indicates a short
in that line. Follow that intercom line, connecting and disconnecting
cables along the line until the fault is isolated.
3. PROGRAM SEND ON/OFF: These toggle switches, one for each
channel, connect program audio to each channel. Both channels receive
the same signal from the rear panel program input . The number of active
sends will not affect the overall send level to any channel.
4. PROGRAM SEND LEVEL: These controls (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 trim (8) 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 trim control on the rear panel.
Conversely, if there is still program heard on a channel when its level is
7 4 3
2 6 4 3 2 5
1
CHANNEL A
TERM
A
PS-702
CHANNEL B
TERM
B
ON OFF ON OFF
12 11
10 10
11
8
PROGRAM INPUT
LEVEL
ADJUST
9