Installation
General planning and installation procedures.
1. Preparations
a) If the loop cable is already planned, install according to the drawings. Then read clause 2.
b) if the loop cable is already planned and installed, read clause 2.
c) If the loop cable is to be planned and installed ”in situ”, please read the following hints.
Hints for planning the loop cable
• Use a 2 x 2.5 mm² twin loop wire, this gives a high exibility for the installer. If other loop wires are used, the
loop driver’s efciency may be affected. Recommended minimum loop wire area is described in the table on
page 3.
• If the space for the loop cable is limited, a at copper foil (Part No 861023 or Part No 861025) can be used as
an alternative.
• The eld strength can be reduced due to reinforcement ironing and such like. If so, the eld strength can be
doubled (appr. 6 dB) if 2 loop driver’s are used, one for each separate wire of the twin wire, or use a more
powerful loop driver as an alternative. Do not place input cables close to / in parallel with the loop wire.
• Do not place the loop wire close to reinforcement iron and such like.
• If the smallest distance in a loop exceeds 10 meters, please consider another loop conguration, like the “eight”-
loop.
• Please be aware of the overspill effect. If the overspill is not acceptable, plan the system for Univox® Super
Loop System® with minimized overspill. Log on to www.univox.eu for more information.
• Beware of the background noises created by other electrical equipment when planning the loop system.
• Proceed to clause 2.
2. Installation
Mount the loop driver
in a 19"-rack.
Important!
The loop driver must have free
access to normal room temperature.
In a 19" rack, a minimum clearance
of 1U (44 mm) above and below the
unit must be left for ventilation.
Connect the loop cable
Connect the loop cable to terminal F on the rear panel. Please look at page 4 for 1- or 2-turn loop connections.
Sensitivity Impedance Priority
IN1 / Mic 0.5 mV-100 mV 7.8 kOhm IN1 > IN3 Default setting
IN1 / Line 25 mV-4 V -”-
IN2 / Mic 0.5 mV-100 mV -”-
IN2 / Line 25 mV-4 V -”- Default setting
IN3 / Mic 0.5 mV-100 mV -”-
IN3 / Line 25 mV-4 V -”- IN3 < IN1 Default setting
