Bosch Appliances 3922 988 43318 manual Audio Routing Insertion mode FIG, Rec. Uit, Mixer

Digital Congress Network Installation and Operating Manual Chapter 4 - Central Control Equipment en 4-13

4.9.1Audio Routing INSERTION mode (FIG 4-9)

In the ‘INSERTION’ mode, the normal audio routing path in the CCU from added microphone signals to the loudspeakers of the delegate and chairman units is interrupted to allow connection of an external device for example - an audio mixer. The external audio device is connected between the ‘Line-Output’ and ‘Line-Input’ of the CCU.

FIG 4-9shows the audio routing in the CCU and external device.

In the ‘INSERTION’ mode, a permanent audio channel is used for the ‘Line-Input’.Therefore the number of available interpretation channels is one channel less than in the standard mode i.e. 10 channels instead of 11 channels in ‘Stand-alone’ and ‘Multi-CCU’ systems.

Installation:

To set the CCU for the ‘INSERTION’ mode DIP-switch ‘S9’ on the Trunk Communication Board (TCB 4) must be set as follows:

DIP-switch S9		(See Chapter 4.5.2 and Table 4-4:
Switch-2 Switch-3	Mode

Off	Off	Standard
Off	On	Insertion

NOTES:

1.In INSERTION mode, recording of the ‘Line-Input’ signal via the recorder output of the CCU is no longer available.

2.For recording the total audio signal (i.e. Floor + Line-Input) use an Audio Media Interface unit LBB 3508/00 on channel 0 (see Chapter 4.11).

	DCN System
		REC. UIT
Delegate/Chairman		CH.13
microphones	∑
		Line-OUT
		REC. IN
		e.g. AUDIO
		MIXER

∑

Interpreter Headphone	CH.0
		Line-IN
Unit loudspeaker
Delegate Headphone
Master volume
PC control
Equalizer PA	CH.12
Local PA (MCCU)
Volume CCU
Delegate unit	CH.13
loudspeaker

FIG 4-9 ‘INSERTION’ mode

Bosch Security Systems 04-2003 3922 988 43318 en CCU Audio Routing Modes