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10. Signal Connections
In HD Mode, the ARRIFLEX D-21 can be
connected to any HD recording device offering
HD-SDI input and 1080PsF/i recording.
Always use HD-SDI-compliant BNC cables for the
signal connection. The cable length should not
exceed 40 m/130 ft, but may be increased by using
high quality cables with low signal damping.
If a signal is recorded via two connections
(dual link), using two cables of the same
length offers better signal performance.
If connection cables show any type of damage
(crush/tear), they should be replaced
immediately!
Never use cables with damaged connectors!
ARRI does not assume responsibility for incurred
losses due to defective signal connections.
To avoid damage to the BNC connectors,
arrange for a cable strain relief. Adapters that
would stick out from the back should not be
connected directly, but with a short cable.
Note: The maximum length for reliable a connection
depends on quality and condition of the
cable in use. To provide more security in case
of minor defects, the length stated here is
intentionally shorter than what is commonly
specified by cable manufacturers.
Signal Monitoring
10.1.
General recommendations:
Always verify that all
•
recordings are free of defects!
All recording setups should include a control
•
monitor to allow checking the recorded material.
If a (waveform) monitor is used directly on the
•
camera to check the signal output, it is recommended
to feed the image from the recording system's
monitoring output unless the recorded signal
is checked using another control monitor.
If power and signal is supplied from two
different sources, i.e. power from camera,
image from "video village", always use the
isolating power adapter IPA-1 to avoid damage
to the camera caused by ground loops.
If the recording cannot be monitored directly
•
(e.g. shoulder or steadicam operation with an
on-board recorder), it should be checked as
soon as possible (e.g. during shooting breaks
or during transfer from recording media).
