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2.11.2. Cintel Film Frame Pulse
In addition to the biphase connections, a film frame pulse is required. This active low pulse occurs when a
new film frame starts in the video output, while the telecine is in normal play speed. The 9025TR uses the
film frame pulse to lock its timecode output to the correct telecine pulldown sequence during the transfer.
Video
Signal
Frame Pulse
(New Style)
Frame Pulse
(Old Style)
The actual DC voltage level of the film frame pulse is not critical as long as a 1 volt peak to peak minimum
signal is applied.
The 9025TR is capable of working with a wide variety of different frame pulse
waveforms. There are two different styles of Frame pulses on Cintel telecines. The new style pulse is
used on URSA Gold and newer machines, The Old style pulse is used on MK III, Digi IV and URSA
machines. Selecting the correct telecine type in the KeyLog TRACKER™ Telecine Setup screen also
selects a default frame pulse handling method. The film frame pulse is sampled once per video field
approximately mid-field.
It is essential that the 9025TR be connected to the correct FILM FRAME pulse from the telecine.
Generally this pulse is labelled "FRAME PULSE" on the Cintel Telecines and is found on the rear of the
Telecine.
Setting the telecine type item of Telecine Setup screen in K
type of pulldown pulse used for the telecine. The telecine type should be set to match the Cintel telecine
type being used to accept the Cintel style FRAME pulse input from the "FRAME PULSE" BNC connector
on the rear panel.
2.11.3. Cintel URSA Gold / URSA Diamond / RASCAL
The Biphase tach pulse is available on a pair of BNC connectors on the rear of the Mag follower. These
biphase signals must be connected to pins 3 & 7 of the 9 pin parallel I/O D connector of the 9025TR and
the Parallel I/O connector on the KeyKode Decoder as shown in Figure 2-12. Retain the separate
shielding of each signal up to the 9025TR in order to prevent cross-coupling which can adversely affect
the biphase reliability.
INSTALLATION
Figure 2-11: Cintel Frame Pulse (shown for 2:3 Transfers)
9025TR Series Film Footage Encoders Manual
L
TRACKER™ also selects the default
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Revision 1.3
Page 2-18
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