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OPTIONAL SOFTWARE
Another register, known as the ARRI OFFSET is accessible from the front
panel. When the 4025TR generator is in one of the ARRI timecode modes,
the ARRI OFFSET register is accessible by pressing the OFFSET key on
the front panel. This register is a measure of the difference in position
between the Keykode, and timecode sensors. There is one ARRI offset
value for 16mm film type and another for 35mm film type.
4.4.6
Checking the accuracy of the ARRI head Offset
When you have completed the ARRI reader connections and have
performed the ARRI head offset learning; you will need to verify the
accuracy of the reader in the system.
The following simple procedure will help you establish that the ARRI code
reader is properly installed, and that the ARRI Head offset has been
learned correctly.
The KeyLog TRACKER™ software maintains separate ARRI head offsets for
16 and 35 mm film and for each film transfer rate. Make sure that you check
each combination to ensure that your system is fully configured.
1. Make note of the film timecode number at the reference frame
of your test film.
number of the reference film frame is to use a piece of film that
has a timecode smart slate in the picture area. This smart slate
should be showing the same timecode numbers as were being
used in the film camera. It is best to choose a reference frame
with the timecode frames of 00.
subject to the accuracy of the smart slate display.) Mark this
reference frame with a punch or grease pencil.
2. Place this film on the telecine, with the reference frame in the
gate.
3. a) In KeyLog TRACKER™, create a new system default
b) Use the Set Codes window of KeyLog TRACKER™ to set
c) Make sure that the Status window is open.
4.
5. The AERR value should be 0, 1, or -1. Press the OFFSET key
on the 4025TR front panel to display the ARRI OFFSET
Model 4025TR Film Footage Encoder Manual
A simple way of identifying the timecode
Configuration based on the System Default KeyKode
Accuracy test, and call it System Default ARRI accuracy
test. Change the mode to ARRI Accuracy test and apply it
to the 4025TR. It will place the hardware in the correct
mode to perform the following test.
the Audio time to the timecode of the reference frame.
Put the telecine into PLAY.
(Note that this method is
Page 4-11
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