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2.6.
CONNECTING THE VIDEO REFERENCE
2.7.
CONNECTING THE GENERATOR
INSTALLATION
The 4025 requires a video reference regardless of whether the VITC or the
Char GEN outputs are used. This video reference is usually the video
output from the telecine. The video does not need to be the actual video
output of the telecine, but it MUST be gen-locked to the telecine video.
The reference video must be applied to both the "GEN VIDEO" input of the
VITC generator and the "CHAR GEN IN." The loop-thru's on these inputs
should make this relatively easy.
impedance input tapped off the loop, therefore, the video signal must be
properly terminated at the end of the line.
The 4025 may be configured to accept either PAL or NTSC video
reference, or to automatically detect the video standard of the video
reference. If the 4025 is in NTSC mode and PAL video is connected, the
NTSC GENLCK LED will blink. If it is in PAL mode and NTSC video is
connected, the PAL GENLCK LED will blink. When a mismatched video
reference is connected, the front panel display will show the message:
The video standard setting is configured using the Format menu. See
section 2.9 for information on connecting the character generator. (See
section 3.5.3 for information on changing the video standard setting.)
The reference video is presumed to be in time with the video output of the
telecine (with respect to the VSYNC timing). You will need to set the Video
Delay parameter on the CONFIG menu if your system has any delays in the
output video path between the telecine output and the 4025 input, such as
noise reducers, colour correctors, etc. Colour timing the reference video to
the 4025 is NOT required.
When the correct video reference is present, the front panel GENLCK LED
corresponding to the video standard will be on.
2.7.1. Connecting the VITC Generator
The program video source for the VITC generator is applied to the GEN
VIDEO IN loop. Normally this is connected to the composite video output
from the telecine. The video input circuitry has a high impedance input
tapped off the loop, therefore, the video signal must be properly terminated
at the end of the line. (See section 3.5.5 for information on setting the video
delay).
Model 4025 Film Footage Encoder Manual
The video input circuitry has a high
VIDEO STANDARD ERROR
Page 2-11
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