Sennheiser EMP 2015 Instruction Manual page 61

Ch no
3. Assign a channel number
You now have to assign the frequency memory a channel number (from 0 to
255). If you use several Soundfield Systems in neighboring rooms, you can
assign channel numbers 1 – 16 to one group of transmitters and receivers
and channel numbers 17 – 32 to the next group, etc. The 16 fixed frequency
memories are factory-preset to channel numbers 01 – 16.
Press the SET button four times to select the "Ch no" menu. "Ch no"
appears on the display; after a short pause the currently assigned channel
number is indicated.
With the buttons you can now select a different channel number.
/
The new channel number starts flashing on the display and becomes
effective immediately.
Note:
Channel numbers which have already been assigned to a fixed
frequency memory are skipped!
Press the SET button to return to the top menu level. The display then
switches back to the standard display.
Note:
Use the same channel number for both transmission and receiving
frequency!
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