ARRI 416 Manuel D’Utilisation

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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 
a
photo
. 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 
a
photo
 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 specific 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 LED
yellow rubber washer
RF channel switch
ARRIFLEX
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