HORITA CSG-50, User Manual, Page: 6 / 11

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4
OPERATING THE CSG-50
To operate the CSG-50 simply connect the desired output signals, apply power and set the POWER switch to ON. A red
LED in the front panel lights when the CSG-50 is powered up.
4.1 Selecting the Pattern
The three position PATTERN switch allows selection of split-field SMPTE color bars (top position), blackburst (middle
position), or full-field EIA bars (bottom position). Note that the composite SYNC OUT signal is continuously output
regardless of video pattern is selected.
4.2 Full-Field Color Bars
Full-field color bars, shown in Figure-1, consist of a full-field of the color bar portion (top half) of the standard split-field
EIA RS-189A color bar pattern.
4.3 SMPTE Color Bars
SMPTE color bars, as shown in Figure-1, consist of the standard split field EIA RS-189A color bar pattern with the
addition of special chroma set and black set patterns.
GRY YEL CYN GRN MAG RED BLU
(75%)
BLU BLK
MAG BLK
CYN
BLK
GRY
A
WHT +Q
- I BLK
B B B
BLK
L
K
4
L
K
L
K
4
-
+
B
C
A. Full Field Color Bars or top half of SMPTE Bars
B. Chroma Set Pattern (Reverse Blue)
C. Black Set Pattern (IYQB)
Figure 1, Color Bars
4.4 Monitor Adjustment Using SMPTE Color Bars
The chroma set color bar pattern is used to adjust monitor hue and intensity. The black set pattern is used to adjust
brightness and contrast.
4.5 Color Hue and Intensity Adjustment
To adjust color hue (phase) and intensity (gain) using SMPTE color bars requires a video monitor that permits the red and
green CRT guns to be switched off.
1. Switch off the red and green guns and adjust the color intensity to match the outer left or right main blue or grey bar
with the intensity of the chroma set bar just below.
2. Adjust chroma hue by matching the brightness of either center main blue bar with the chroma set bar just below.
4.6 Brightness and Contrast Adjustment
To correctly set monitor brightness and contrast, adjust the controls so that the whiter-than-black (BLK +4) is visible with
respect to the black surround, but the blacker- than-black bar (BLK -4) is not visible.