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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.
2.14.1. Biphase Tach from the Sony 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. The Biphase tach pulse is available on the 9 pin D AUX 6 connector on the
Vialta. These biphase signals must be connected to pins 3 & 7 of the 9 pin parallel I/O D connector of the
9025TR as shown in Figure 2-21. Retain the separate shielding of each signal up to the 9025TR in order
to prevent cross-coupling which can adversely affect the biphase reliability. Use the BIPHASE RATE item
of the Telecine Setup screen in K
Correct connections will result in 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 use a cable, which provides
separate shields for each phase of the biphase signal.
2.14.2. Sony 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 9025TR uses the film
frame pulse to lock its timecode output to the correct telecine pulldown sequence during the transfer.
Video
Signal
SEQ Pulse
(Active High)
The SEQ pulse is a 1 msec wide active high pulse that goes high during the first field of each new film
frame on the telecine output. This signal should always change level around VSYNC time. The SEQ
pulse is available on the HD output module from the telecine and must be connected to the FRAME
PULSE IN connector on the 9025TR rear panel.
Connection of a Film frame pulse is required even with 1:1 video transfers in 1080i,
525i and 625i to permit the 9025TR to distinguish the difference between the field 1
and field 2 dominant pull downs.
INSTALLATION
L
TRACKER™ to set the 9025TR to the correct biphase rate.
EY
OG
Figure 2-20: Sony SEQ Pulse (shown for 2:3 Transfers)
9025TR Series Film Footage Encoders Manual
Revision 1.3
Page 2-28
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