ARRI L5, Руководство пользователя, Страница: 26 / 52

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DMX data link
For controlling the ARRI L5 via DMX you need a DMX data link.
The ARRI L5 has 5-pin locking XLR sockets for DMX and RDM
data input and output. The default pin-out of both sockets is:
Pin 1 = Shield
Pin 2 = Data - (cold)
Pin 3 = Data + (hot).
Pins 4 and 5 are not used by the ARRI L5 but are bridged be-
tween input and output sockets. These pins can therefore be
used as a pass-through connection for an additional data sig-
nal if required.
Pin 4 = Data - (cold)
Pin 5 = Data + (hot).
The limitation of 32 products per data link is not applicable for
the ARRI L5. You must not connect more than 256 products
per data link. Depending on the channel requirements the ad-
dress space of a data link (512 channels) may not be enough
to control all products connected. You may set more than one
product to identical DMX addresses to obtain identical behav-
ior. For independent control every product needs to be as-
signed an individual address range.
If you need to control more products individual, you need to set
up additional DMX data links.
Tips for reliable data transmission
• Use shielded twisted-pair cable designed for RS-485 devices:
standard microphone cable cannot transmit control data reli-
ably over long runs. 24 AWG cable is suitable for runs up to
300 meters (1000 ft.). Heavier gauge cable and/or an amplifi-
er is recommended for longer runs.
• To split the data link, use a DMX splitter.
• Install a DMX termination plug on the last product of every
DMX data link.
To connect the data link
IMPORTANT! When using the 5-pin XLR data input,
do not use the data input of the 4-pin powerDMX at
the same time and vice versa. When the ARRI L5
receives control signals on both data inputs it will
behave strange and erratically. You will not be able to
control the ARRI L5 via DMX.
• Connect the DMX data output from the controller to the data
input (male XLR) of the ARRI L5.
• Run the data link from the data output (female XLR) to the
data input of the next product.
• Terminate the data link by connecting a 120 Ohm, 0.25 Watt
resistor between the data 1 hot (+) and cold (-) conductors
(and between data 2 hot and cold if used) at the data output
of the last product on the link.