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2.10. CONNECTING A RANK CINTEL TELECINE
INSTALLATION
It is necessary to connect the character inserter to a video source to
properly gen-lock the 4025. The character output must be connected to a
monitor in order to use the Format menu, which is required to properly
configure the 4025 Film Footage Encoder.
Two signals, (bi-phase tach and Film Frame pulse) must be connected
from the telecine in order to generate field accurate time code.
location and description of these signals depend on the model of your
telecine. Sections 2.10.1 and 2.10.2 provide an overview of the Rank
Cintel connections. Sections 2.10.3 to 2.10.6 provide detailed instructions
for your models of Rank Cintel telecines. In addition to making the physical
connections to the telecine you will have to select the Bi-Phase rate,
Telecine type and set up for any video processing delays between the
output of your telecine and the input of the 4025. Section 2.10.7 provides a
procedure to verify that you have made the necessary connections and
settings for your telecine.
This procedure should be followed before proceeding to KeyKode
installation.
2.10.1. Bi-Phase Tach from the Rank Cintel Telecine
The 4025 is fitted with a nine pin female 'D' connector (PARALLEL I/O) for
connection to the telecine. The pin connections are shown in Chapter 7.
The BPH1 and BPH2 inputs (pins 7 & 3 respectively) should be connected
to bi-phase quadrature tach pulses from the telecine. These TTL level
pulses usually come at a rate of 10 pulses per film frame. The 4025 can
also accommodate tach rates of 1, 2 or 5 pulses per frame. For best
results use the highest bi-phase rate possible. Use the BI-PHASE RATE
menu item of the Toolbox Hardware menu To adjust the 4025 to the
correct bi-phase rate. (See section 3.6.3) Correct connections will result in
EDGE numbers that increment and decrement when the telecine moves
forward and reverse respectively. In the event that the 4025 counts in the
reverse direction when the telecine is in forward play, reverse the two bi-
phase connections to the 4025.
To minimize the effects of cross coupling and noise on the bi-phase signals,
which can affect the counting reliability of the 4025, you use a cable which
provides separate shields for each phase of the bi-phase signal.
Model 4025 Film Footage Encoder Manual
The
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