Clear-Com SB-704, Instruction Manual

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S B - 7 0 4 M A I N S T A T I O N
1 - 2
Clear-Com main stations, power supplies, and certain remote stations each
have an auxiliary program input with its own volume control, which allows an
external audio source to be fed to the intercom system.
Visual signal circuitry ( call lights), a standard feature on all main and remote
stations, allows the user to attract the attention of operators who have
removed their headsets.
Figure 1-1: SB-704 Front Panel
DESCRIPTION
The SB-704 main station is a four-channel microprocessor-controlled station
intended to work with other Clear-Com party-line products. The SB-704 is
designed for applications in which a person needs to communicate with up to
four groups of people and be able to quickly assign a remote station to any of
the four channels.
The station features a ten-position slide switch matrix that allows assignment
of any of the ten intercom lines to any of the four intercom channels, to an
isolated separate party line, or to an
off position.
The following is a list of features found in the SB-704 intercom station:
• MICROPROCESSOR CONTROL: Most aspects of station
operation are under microprocessor control.
• REMOVABLE ACCESS PANEL: A removable front panel allows
access to most controls and option DIP switches.
• INDIVIDUAL CHANNEL CONTROLS: Each channel has
individual talk , listen , and call push-buttons for each channel.
• MOMENTARY/LATCHING TALK BUTTONS: The talk buttons
have a momentary and latching action depending on how the button is
used. The latching function can be defeated with DIP switches.
• INDIVIDUAL CHANNEL ADJUSTMENTS: Each channel has
individual listen level controls, channel null adjustments, and
program feed level controls.
• MULTIPLE PROGRAM INPUTS: Multiple program inputs are
provided for local station monitoring and program feed to intercom
lines for local talent cuing (IFB).
Off
B
C
D
A
Party
Line
1 2 3 4 5 6 7 8 9 10
Headset
Null Pgm Listen
Channel B
Null Pgm Listen
Channel A
Null Pgm Listen
Channel C
Null Pgm Listen
Channel D
B C D A
Line
Length
Program
Interrupt
B C D
Auto-Talk
/Listen
B C D A
Talk Latch
Disable
B C D A
HS
Lim
B C D A
Auto-Call
Speaker
On
Off
Volume
Channel D Channel C Channel B Channel A
Talk
Listen
Call
Talk
Listen
Call
Talk
Listen
Call
Announce
All Talk
Link On
Mic Select
Panel
Headset
Mic On
Panel Mic
On
(Off)
(Default)
Panel Mic
Gain
Sidetone
Adjust
CH. B
CH. A
CH. C
CH. D
Short
SB-704
Program
Level
Program
On/Off
B C D A
Long
(Short)
Remote
Mic Kill
4 Channel Switchboard
Main Station