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12.2 Radio system
A radio is incorporated into the 416 Plus extended
electronics. This enables wireless communication of lens
control and lens data information as well as remote control
of the camera functions.
The 416 Plus uses the latest ARRI WRS protocol
which is denoted be a yellow rubber washer on
the antenna aphoto. All ARRI WRS products
can be upgraded to the new protocol – consult
your local ARRI Service Centre.
The 416 Plus has a channel selection switch and a status
LED aphoto for the radio modem. The channel selection
switch on the camera should be set to the same number
as that of the WMU-2/3 used on the controlling handset.
It is not possible to control more than one 416 Plus, URM,
UMC-3 or LDB with one Wireless Main Unit simultaneously.
Yellow washer wireless protocol uses a specic scheme of
changing frequencies to make the connection between the
handset and camera modems more robust. The channels
of the selection switch are allocated as follows:
status LEDyellow rubber washer
RF channel switch
ARRIFLEX1Plu