Sennheiser WIRELESS DIGITAL Instruction Manual page 9

Indicators on the EM 1090 DIGITAL receiver
The 3-segment LED display on the left of the front panel provides information
on the operating state of the EM 1090 DIGITAL receiver:
Red LED "ON":
The LED lights up to show that the receiver is connected to the mains
and has been switched on with the POWER button .
Red LED "RF":
An RF signal from the suitable transmitter is being received by the receiver.
In contrast to analog transmission, digital test signals are also received so
that the transmitter can be identified.
Red LED "DATA":
After the receiver has checked the suitable transmitter and accepted the digi-
tal transmission, the LED indicates that a data stream is being received.
"AF LEVEL" indication
The 6-segment LED display on the right of the front panel indicates the AF
level, i.e. the incoming audio signal. The segments of the LED display start
lighting up from the left.
Adjust the sensitivity of the SK 1093 DIGITAL belt pack transmitter such
that the last (right-hand) LED segment does not light up. The sensitivity of
the SKM 1091 DIGITAL handheld transmitter is automatically adjusted.
"BATTERY" indication
As long as the transmitter doesn't transmit any audio signal (e.g. during
pauses in speaking), the 6-segment LED display indicates the remaining
transmitter battery capacity. The segments of the LED display start lighting
up from the right.
If the battery is going flat, the last (left-hand) LED segment will light up. You
should replace the battery within the next 20 minutes (value depending on
battery type).
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