beautypg.com

Description, Description -2 – Clear-Com SB-704 User Manual

Page 8

background image

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