AUDIOropa PROLOOP DCCplus Mode D'emploi page 22

3.5 Example of a LOS loop measuring 16x19 metres, approx. 300m²
Fig. Example of a LOS loop
3.6 Connecting the induction loops to the master and slave amplifier
• The loop amplifiers has to be located outside of the loop.
• Connect the "SLAVE OUT" output socket of the Master amplifier to the "SLAVE IN" input socket of the Slave
amplifier (See picture below).
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• Twist the section of cable between the amplifier and the loop (supply to the induction loop) to reduce interfe-
rence. (See picture below)
• Use a suitable measuring instrument (e.g. ohmmeter) to make sure that the loop is not grounded (no defect in
the insulation of the loop system). Typical resistance values for a 300m² loop lie between 0.5 and 3 ohms.
Since the master loop is longer, it also has a greater resistance.
OUT
LOOP
22 English
LOOP
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• Connect the cable ends of the loop to the corresponding terminals (17)
COM
on the rear panel of the amplifier. Make sure that you do not mix up the
ends of the master and the slave cable.
MASTER
LOOP
SLAVE