Beyerdynamic Opus 900 Notice D'utilisation page 64

2.2 How to insert the Batteries (S 900 P and S 900 M)
1. Unscrew the battery cap of the S 900 P or S 900 M counter-clockwise.
2. Insert two 1.5 V batteries into the battery compartment observing polarity markings.
Note:
The S 900 C transmitter is powered by rechargeable batteries which cannot be changed by the user. If
the rechargeable batteries have to be changed, please contact your beyerdynamic dealer.
2.3 LC-Display
1. "ERR" Message: When the "ERR" message is displayed, there is an error.
ERR noo3: The frequency you want to program is above the switching bandwidth of the
transmitter. Use a receiver with an appropriate frequency group. (At this time the microphone is
still operating and the frequency remains unchanged. To clear the displayed "ERR" message
switch off the handheld transmitter and on again.)
ERR noo4: The frequency you want to program is below the switching bandwidth of the
transmitter. Use a receiver with an appropriate frequency group. (At this time the microphone is
still operating and the frequency remains unchanged. To clear the displayed "ERR" message
switch off the handheld transmitter and on again.)
2. "Group" & "Channel": When both indications are displayed, it means that you are using the
pre-programmed frequency of the receiver.
3. "Channel": If "Channel" is displayed only, it means that you are using a frequency which is not
pre-programed.
64