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OPERATION
Select RANK if you are using a Rank Cintel MK III Digiscan 3,
4:2:2 Digiscan IV or URSA telecine. Select URSA GOLD if you
are using a Rank Cintel URSA Gold telecine. Select BTS if you
are using a BTS, FDL-60, FDL-90 or Quadra telecine. Select
OTHER for custom implementations of telecine types. At this
time OTHER enables a mode that is compatible with Rank
Cintel ADS 1 telecines. This may change in the future. Contact
the factory for custom applications should they be required.
URSA Gold telecines with firmware versions 5.01 and earlier
had some indeterminate timing related to the Film Frame pulse
(which is connected to the 4025) and certain other internal
telecine pulses.
telecine firmware version 5.02 and later. Contact your Rank
Cintel agent if you are unsure of what telecine firmware version
you have, or how to upgrade to the latest version.
3.6.5
Selecting the Correct Frame Pulse Handling
FILM FRAME Is used to control how the 4025 handles the FILM FRAME
pulse from the telecine.
In the LATCHED mode the 4025 sets a latch internally when the
pulse is low any time during the field. The latch is reset at the
beginning of VSYNC each field. The 4025 is looking for a high
to low edge on the input after the leading edge of vertical sync.
The high to low edge must occur somewhere in the first third of
the field. The pulse must return high before the end of the field.
This mode is useful in situations where the timing of the FILM
FRAME pulse input does not coincide with the sampling time (at
the end of VSYNC) or the pulse is too short to be sampled. This
is the preferred mode for most Rank Cintel telecines except
URSA GOLD (See DIRECT mode).
In the SAMPLED mode the 4025 is looking for the FILM
FRAME input to be low at the end of VSYNC (approximately
coincident with the first post equalizing pulse) This mode is
useful in situations where the FILM FRAME pulse input begins
before VSYNC, and is the mode used by 4025's with 615
software versions prior to 941208. This mode is provided for
backwards compatibility.
In the DIRECT mode the 4025 uses the FILM FRAME input
directly
This mode is useful in situations where the FILM
FRAME pulse input is low for the duration of the field. This is the
preferred mode for Rank Cintel URSA GOLD telecines.
In the IGNORED mode the 4025 ignores the FILM FRAME input
and the Frame LED on the 4025 front panel will be ON all the
time. This mode is useful in situations where the film transfer
Model 4025 Film Footage Encoder Manual
These inconsistencies have been fixed in
Page 33
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