Setting Up The System Timing For 24P Video; Calibrating The Telecine Sync Timing; Table 3-1: 7750Srg-Hd Sync Output Selection Switch Settings - evertz 9025TR Series Instruction Manual

The following procedure should be used to calibrate the edit timing. Figure 3-1 shows edit timing that is
properly aligned with the system 6 Hz reference pulse. Figure 3-2 shows edit timing that is not properly
aligned with the system 6 Hz reference.

3.6.1. Setting up the System Timing for 24p Video

1. Switch the system to 24p mode. Make sure that the telecine is receiving 24p tri-level sync.
Make sure that the TLC has been modified for Dual Sync mode according to the instructions in
TLC Technical bulletin TLC-052.
2. If you are using the Evertz 7750SRG-HD to provide the reference pulses to your system make
sure that it is configured correctly. Table 3-1 shows the most common switch settings. Make
sure that the 7750SRG-HD is receiving an NTSC genlock reference and that DIP switch 6 is set
to the On position.
DIP Switch
1 2 3 4
On Off Off Off Off
On On Off Off On

Table 3-1: 7750SRG-HD Sync Output Selection Switch Settings

Connect the 23.98psF tri-level sync from output 2 of the 7750SRG-HD to the telecine. Connect
the slow PAL sync from output 3 of the 7750SRG-HD to the TLC Black input. Connect the
59.94 Hz V-Drive from output 1 of the 7750SRG-HD to the TLC CFID input. Connect the 6Hz
reference pulse from output 4 of the 7750SRG-HD to the TLC Aux (J16) pin 7. You will also
need to connect this output to pin 1 of the HD9150 parallel I/O Connector.
3. Perform the Biphase Accuracy test for 24 P video as described in section 3.3. You should not
have to adjust the Prestore delay parameter in the Telecine setup screen. You may have to
adjust for different video path delays if for example you do not have a noise reducer in the 24p
video path. If you need to change the Video Delay parameter you are better to create a new
Telecine Setup for 24p.
You do not need to calibrate the edit timing in the TLC before doing the 24p Biphase accuracy
test. You just need to make sure the Biphase based film numbers in the burn-ins agree with
those on the film. Also, verify that the Biphase based time code is 1:00:00:00 at the reference
film frame.
4. Perform the KeyKode Head offset learning for 24p video as described section 3.4. When you
have done that, perform the KeyKode-accuracy test as described in section 3.5. Now that you
have confirmed the accuracy of the 9025TR character windows in 24p video mode you will use
them to adjust the timing of the rest of the system.

3.6.2. Calibrating the Telecine Sync Timing

1. Park the film on a reference frame (preferably one at the beginning of a foot e.g. 7345+00).
2. Record one or two minutes of colour bars on the 24 from HD VTR starting at timecode
00:59:50:00.
CALIBRATION
5 1 2
1080i/59.94 1080p/23.98sF
59.94 V drive 1080p/23.98sF
9025TR Series Film Footage Encoders Manual
Output
3 4
625i/47.96 6Hz Pulse
625i/47.96 6 Hz Pulse
Revision 1.3
Genlock
Type Lock Phased
Outputs
NTSC Phase 1
NTSC Phase 1
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