Troubleshooting; Installation In A 19" Rack - Sennheiser WIRELESS DIGITAL Instruction Manual

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6

Troubleshooting

The transmission fails completely
Short-period switching off and back on again the EM 1090 DIGITAL
receiver may lead to an interrupt in transmission.
After having switched off the receiver hang on for a couple of seconds
before switching on again as with any processor-controlled device.
The transmission range is not sufficient
Use remote antennas. You can connect two additional A 1090 DIGITAL
antennas to the EM 1090 DIGITAL receiver. The remote antennas
can be installed at a distance of up to 30 meters from the receiver.
You can hear crackling noise and – occasionally – another
transmitter is being received
A second DIGITAL transmitter is operating on the same transmission
frequency. In contrast to analog audio transmission, both transmitters
are received simultaneously. If the field strengths of both transmitters
are almost similar, the receiver switches to and fro between the two
transmitters – crackling noise occurs – and possibly, the "DATA"- LED
goes off.
Choose a different transmission channel.
You can hear "crosstalk"
Observe a minimum distance of 3 meters between transmitter and
receiver.
Crackling noise and dropouts occur during the operation
with a clip-on microphone
The jack plug from the microphone cable is not screwed tightly to the
SK 1093 DIGITAL. Lock the jack plug by screwing down the locking
ring.
Before deciding on a transmission channel, test – with the receiver
only – whether the chosen channel is free. Switch on the receiver and
listen to the channel. When you are sure that no one else is occupying
this channel, you can set the radiomicrophone to the same frequency.
7

Installation in a 19" rack

Slide the supplied rack mount adapters and two receivers together as
illustrated. The receivers can now be bolted into the rack.
Instead of a second EM 1090 DIGITAL receiver you can also use a
GA 1031 CC blank module or a GA 1031 AM antenna mount.