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2.12.4. Verifying the Connections to an ITK Telecine
When you have completed the basic telecine connections, you will need to verify the frame accuracy of
the basic system using the procedure in chapter 3.
2.13. CONNECTING A PHILIPS/THOMSON TELECINE
Two signals, (biphase tach and SOF/FRID pulse) must be connected from the telecine in order to
generate field accurate time code and KeyKode numbers. The location and description of these signals
depend on the model of your telecine. Sections 2.13.1 and 2.13.2 provide an overview of the Philips
connections. Section 2.13.4 provides some additional information specific to various telecine models. In
addition to making the physical connections to the telecine you will have to select the biphase rate,
telecine type and set up for any video processing delays between the output of your telecine and the input
of the 9025TR. Chapter 3 provides a procedure to verify that you have made the necessary connections
and settings for your telecine.
2.13.1. Biphase Tach from the Philips/Thomson Telecine
The 9025TR is fitted with a nine pin female 'D' connector (PARALLEL I/O) for connection to the telecine.
The pin connections are shown in Table 2-1
The BPH1 and BPH2 inputs (pins 3 & 7 respectively) should be connected to biphase quadrature tach
pulses from the telecine. These TTL level pulses usually come at a rate of 10 pulses per film frame. The
9025TR can also accommodate tach rates of 1, 2 or 5 pulses per frame. For best results use the highest
biphase rate possible.
K
L
TRACKER™ to set the 9025TR to the correct biphase rate. Correct connections will result in
EY
OG
EDGE numbers that increment and decrement when the telecine moves forward and reverse respectively.
In the event that the 9025TR counts in the reverse direction when the telecine is in the forward direction,
reverse the two biphase connections to the 9025TR.
To minimise the effects of cross coupling and noise on the biphase signals, which
can affect the counting reliability of the 9025TR, you should use a cable, which
provides separate shields for each phase of the biphase signal.
2.13.2. Philips/Thomson Film Frame Pulse
In addition to the biphase connections, a film frame pulse is required.
Philips/Thomson telecine, (known as the SOF or FRID pulse), changes level 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
SOF Pulse
INSTALLATION
Use the BIPHASE RATE item of the Telecine Setup screen in
Figure 2-16: Philips SOF Pulse (shown for 2:3 Transfers)
9025TR Series Film Footage Encoders Manual
Revision 1.3
This pulse from the
Page 2-23
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