UniVox
®
TV-200
6
Detection system in the loop
The acoustical detection system can be connected in two ways:
1. Door bell with power switch
2. External triggering voltage
5-24V AC/DC
The acoustical indication muffles the sound in the loop and starts a wide
banded harmonic sound that cover most of the frequency non-linear hearing
impairments. See the installation guide on the amplifier.
General advice for planning
● Plan for a 2x1.5mm² paired wire. First try to connect as a 2-turn loop. If
the desired field strength is not reached, parallel the two wires thereby
creating a 1-turn loop. As an alternative a flat copper foil can be used if
the room to install a standard round wire is limited.
● Normally reinforced rooms can reduce the coverage area by about 50%.
● Never put analogue input cables close/parallel to the loop wire.
● Avoid dynamic microphones to reduce the risk of magnetically feedback.
● Avoid putting the loop wire close to/on metal constructions or
reinforcing structures. This might reduce the field strength substantially.
Special settings for TV
●
LCD/Plasma TV’s usually have well working RCA/phono connectors.
Connect to
In 3
.
● SCART: First always check that the present SCART system works,
i.e. the TV changes picture automatically when an external unit (DVD
etc.) is turned on. Remove the existing SCART cable from the TV and
connect it to the output
Ext
on the TV-200. Connect a new SCART cable
between the SCART output on the TV and the SCART input
TV
on the
TV-200.
● Sound adjustment/TV sync: Modern flat screen TV’s often have a time
difference (sound delay) between the sound from external units and
the sound from the TV. Use the
TV sync
adjustment potentiometer to
achieve the best sound (no echo effects).
