Clear-com SB-704 User Manual download pdf (Page 15)

SB-704 MAIN STATION

1-9

4. Adjust the sidetone adjust control for the desired amount of sidetone

in the headset.

• CHANNEL PROGRAM FEED LEVEL: Beside the null control for

each channel there is a control marked PGM which adjusts the amount of

program being sent to that channel.

Each channel has two program sources:

1. The main program that is input from the rear-panel XLR connector

may be enabled for a given channel with the program on/off DIP

switches for the channel.

2. The auxiliary input connector has four individual program inputs for

each channel. These inputs cannot be disabled with front-panel DIP

switches.

REAR PANEL OPTIONS

This section describes the switches on the rear panel. These switches and

controls are usually set and not used in daily operation of the unit.

Intercom Line Termination

The SB-704 has switch-selectable intercom-line termination networks. If

more than one SB-704 (or any other Master Station) is installed on the same

intercom lines then all of the terminations in all of the stations except one

must be disabled.

Note: If the link function is to be used on an SB-704 and there is more than

one main station in the system, it can only be used on the unit that

provides termination.

The terminations are enabled or disabled with switches on the rear panel.

Each channel is marked clearly on the panel. Set the switches to the off

position to disable the terminations in the station. The SB-704 is shipped

from the factory with all four lines terminated.

SHORT-CIRCUIT AND OVERLOAD CONDI-

TIONS

If a short-circuit condition appears on any of the four intercom lines, the sense

circuitry for that line will disconnect the DC power to that line only and the

red “short” light for that channel will be on. After approximately 0.5 seconds,

the SB-704 will attempt to turn power on again. This allows momentary short

or overload conditions to clear automatically.

If the red “short” light remains after repeated automatic or manual attempts to

restore power, then there is either a short on that intercom line or too many

intercom stations have been connected to that intercom line. In this case,

unplug the intercom line connected to the affected channel and its red “short”

light should go out. This indicates that there is short in that line. Follow that

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 41 42

No comments

Clear-com SB-704 User Manual Page 15