Clear-com SB-704 User Manual download pdf (Page 8)

SB-704 MAIN STATION

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

Party

Line

45678910

Headset

Null

Pgm

Listen

Channel B

Null

Pgm

Listen

Channel A

Null

Pgm

Listen

Channel C

Null

Pgm

Listen

Channel D

BCDA

Line

Length

Program

Interrupt

BCD

Auto-Talk

/Listen

Talk Latch

Disable

Lim

Auto-Call

Speaker

Off

Volume

Channel DChannel CChannel BChannel A

Talk

Listen

Call

Talk

Listen

Call

Talk

Listen

Call

Announce

All Talk

Link On

Mic Select

Panel

Headset

Mic On

Panel Mic

(Off)

(Default)

Panel Mic

Gain

Sidetone

Adjust

CH. B

CH. A

CH. C

CH. D

Short

SB-704

Program

Level

Program

On/Off

BCDA

Long

(Short)

Remote

Mic Kill

4 Channel Switchboard

Main Station

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Clear-com SB-704 User Manual Page 8

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