AVT Titan, Operator'S Manual

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2 – 3 4 040 7448 329657 (04.97) PC-SW 4.5
C H A P T E R 2 : P U T T I N G T H E S Y S T E M I N T O O P E R A T I O N
2.11 Setting the Audio Line interface
The metal cover must be removed for the setting of the jumpers. For the Audio
Line interface, the transformers can be selected with or without centre-point
earthing. The factory setting is OFF (no centre-point GND). The input impe-
dance of the line interface can be set to either LO (600
Ω
) or HI (20 k
Ω
). The
factory setting is HI. After the jumpers have been set, the metal cover should
be replaced.
FIGURE 2.3 POSITION OF THE JUMPERS ON THE AUDIOCODEC UNIT
2.12 Switching on the system
After all the required interfaces have been connected, the system can be swit-
ched on. The following message appears in the display:
After some seconds, the main menu appears:
The device is now operational. For the device to operate with echo cancella-
tion, the audio system must be calibrated first before a video transmission is
started. This can be done either with the operator panel (see SECTION 2.10)
or, more conveniently, with the PC user interface (see SECTION 3.3.5).
176
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T I T A N --- AVT GmbH
Booting system...
*CALL DISC MODE SYS MEM
SYSTEM BOOTED