Table of Contents
Advertisement
3.
CALIBRATING THE 9025TR SYSTEM TIMING
In order to achieve frame accurate numbering the film system timing must be properly calibrated
according to the following procedure. It is important to follow the procedure closely as each step
depends on the successful completion of the previous step.
The Biphase accuracy test verifies the basic connections to the telecine and allows you to compensate
for film rate and video rate delays in the Telecine, colour corrector, noise reducer and other devices in
the system. Once this is complete you will calibrate the Head offset values for the KeyKode reader,
and verify that these are correct. These two steps must be performed for each video standard that you
intend to use.
If you are using an edit controller such as the TLC or POGLE you will also need to calibrate the system
edit timing to achieve frame accurate edits and proper 2:3 pulldown control. Consult the relevant
manuals for information on how to do this.
If you are using the film system in a 2:3 pulldown mode, it is preferable to do the system calibration in
the 2:3 pulldown mode (60i video with film running at 24 FPS) first. This will allow us to properly
determine the Prestore and Video Delay numbers. If you can not do the 2:3 mode first then proceed
directly to the 1:1 modes with either 60i or 50i video. After you have done the 60i and 50I calibration,
proceed to the 24p calibration. You will have to go back and do 60i calibration later, if you intend to
transfer into 60i video at 24 FPS. You may have to recheck the 1:1 calibrations again if you change the
Video Delay or Prestore delay values in 60i.
If you are using the film system with High definition 24p Video, you will also have to calibrate the edit
timing to ensure that the edits are occurring at the 6 Hz reference point.
3.1.
CONFIGURING THE TELECINE SETUP
The first thing that you need to do when you're first setting up the KeyLog TRACKER™ software is to
configure the Telecine Setup to match your transfer suite. Choose the Telecine Setups item from the
Edit menu.
The Telecine Setups window shows the System Default Telecine Setup that is installed with the
software. Each Telecine Setup consists of a group of telecine related parameters including the telecine
type, the telecine biphase rate, the type of frame pulse handling that's appropriate for your telecine,
and Video Delay and Prestore film delay parameters that are appropriate for your installation. Each
Telecine Setup also includes a set of KeyKode head offsets.
To change the default settings to match your installation, click on the Edit button. You can change the
description to something more appropriate if desired.
matches your installation by clicking on the down arrow on the telecine type combo box. You are now
presented with a list of the possible telecine types supported by the 9025TR hardware. Click on the
telecine type to select it. The default biphase rate and Frame Pulse Handling for that telecine type will
be automatically entered.
respective combo boxes.
information for which settings you should use.
If you have video delays between the output of the telecine store and the input of the 9025TR hardware
then set the Video Delay parameter to the appropriate number of fields. If you have additional Prestore
film processing delays that have been added for devices such as film grain reducers then enter in the
CALIBRATION
9025TR Series Film Footage Encoders Manual
Select the correct biphase rate or Frame Pulse Handling using the
Consult the sections in chapter 2 for your specific telecine type for
Revision 1.3
Select the telecine type that most closely
Page 3-1
Advertisement
Table of Contents
