Clear-com FOR-22 User Manual download pdf (Page 8)

Vitec Group Communications

FOR-22 Dual 4-Wire Interface Instruction Manual

1-2

The installation chapter of this manual gives more information on

interface frames and on wiring the FOR-22 unit to the matrix and to

external devices.

OPERATION

In normal use, the FOR-22 interface does not require operator

interaction. Each channel features the same set of front panel

controls:

• A "send" level control

• A "receive" level control

• A "send level" LED

• A "relay active" LED

"SEND" CONTROLS

The "send" controls affect the level of the signals from the matrix to the

external devices. This control should be adjusted so that the "send

level" LED (see below) lights green when a signal is present.

Occasional red flashes due to peaks in the audio signal are

acceptable. The "send" controls have a range of ± 10 dB.

"SEND LEVEL" LEDS

The 2-color "send level" LED lights green when the audio signal is

being sent to the external device at a typical acceptable level. The LED

lights red when the audio output signal level is too high.

"RECV" CONTROLS

The "recv" ("receive") level controls affect the level of the signals sent

from the external devices to the matrix. The "recv" controls have a

range of ± 10 dB.

RELAY ACTIVE LED

The amber "relay" LED lights whenever the relay is activated.

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Clear-com FOR-22 User Manual Page 8