Control Functions - Sign Video Proc Amp Instruction Manual

CL IP 5
P OWER
Sign Video
PUSH BUTTON SWITCHES
POWER
Push in to apply power to the PROC AMP. When
off, no power is consumed and no video is passed
to the output.
UNITY
Push in to bypass all controls and set the video
output essentially equal to the video input.
SPLIT
Push in to display a split screen. The right side of
the screen is uncorrected ("UNITY") video and the
left side of the screen is corrected video.
MONO
Push in to produce a monochrome (black & white)
picture by removing the color burst.
SYNC
Push in to ensure that the output sync is always
40 IRE as long as the input sync is greater that 30
IRE. Note that this affects the way that the video
level meter works.

CONTROL FUNCTIONS

v i d e o l e v e l
2 0 40 60 80 100 CL IP
7.5 10
b l a c k l e v e l
UNITY SPLIT MONO SYNC
Proc A mp
b lack gain s atu ratio n
un ity u n it y u n ity
luminance
ROTARY CONTROLS
luminance black
Shifts the entire visible video signal either brighter
or darker in order to set the blacks at the desired
level. The meter should read 7.5 on scenes that
contain a really dark object. If the black clip LED
lights, you should adjust clockwise to stop clipping
(see USING THE PROC AMP).
luminance gain
Adjusts the gain of the luminance (or brightness)
portion of the picture. Does not adjust chroma
along with luminance so it cannot be used as a
fader control. Use it to set the brighter regions of
the picture to the desired level. Meter should read
80-100 on scenes containing whites. If the clip
LED lights, the level is excessive (see USING THE
PROC AMP).
chroma saturation
Adjusts the color saturation (also called chroma
gain or chroma level). Set by eye with a good
video monitor.
chroma hue
Adjusts the color hue (also called tint or phase)
Set by eye with a good video monitor.
METERING
The video level meter reads (1) peak white video
level on the right and (2) peak black video on the
left. The upper set of numbers is for reading the
white level. The lower set of numbers is for read-
ing the black level. Normal video will extend from
7.5 to 100, with 7.5 being the minimum and 100
being the maximum. Going outside of this range
produces nonstandard video that will cause prob-
lems with some equipment.
4
h ue
u n it y
chroma