evertz 4025TR Instruction Manual page 5

The following document describes connections to the ITK Millennium and Sony Vialta Telecines.
References to the 4025TR manual are to version 1.0 printed January 1998.
1. CONNECTING AN ITK TELECINE
1.1 General Information
Two signals, (biphase tach and OPD 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 1.1.1 and 1.1.2 provide an overview of the ITK connections.
Section 1.2 provides some additional information specific to the ITK Millennium telecine. 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
4025TR.
1.1.1 Biphase Tach from the ITK Telecine
The 4025TR is fitted with a nine pin female 'D' connector (PARALLEL I/O) for connection to the
telecine. The pin connections are shown in section 7.1.1 of the 4025TR manual.
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 4025TR 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 4025TR 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 4025TR counts in the reverse direction when the telecine is in the
forward direction, reverse the two biphase connections to the 4025TR.
! To minimize the effects of cross coupling and noise on the biphase signals,
which can affect the counting reliability of the 4025TR, you should use a cable,
which provides separate shields for each phase of the biphase signal.
1.1.2 ITK Film Frame Pulse
In addition to the biphase connections, a film frame pulse is required. This pulse occurs when a new
film frame starts in the video output, while the telecine is in normal play speed. The 4025TR uses the
film frame pulse to lock its timecode output to the correct telecine pulldown sequence during the
transfer.
Video
Signal
OPD
Date of Issue: June 6, 2001
Use the BIPHASE RATE item of the Telecine Setup screen in
Figure 1: ITK OPD Pulse (shown for 2:3 Transfers)
Model 4025TR Film Footage Encoder Manual
4025TR Manual Change Sheet 1.0-2
Page 1 of 6