Chroma 2238 User Manual

Appendix B Default Patterns List
B-21
83
CHARAC/CX-7
The pattern is all composed of “CX”. The font
type is 7 x 9.
84
CHARAC/CX-7R
It is the reverse pattern of pattern # 83.
85
TEXT-5X7
The pattern is an article. The font type of
each letter is 5 x 7.
86
TEXT-7X9
The pattern is an article. The font type of
each letter is 7 x 9 (character # 160  255) in
proportional spacing.
87
TV-SMPTE BAR
Pattern 87 is a standard SMPTE
COLORBAR and is for NTSC and PAL
timing only. Black screen will output if using
other timings. When Pattern 87 is selected, it
outputs NTSC SMPTE COLORBAR if the
timing is NTSC, and it outputs PAL SMPTE
COLORBAR if the timing is PAL. The
descriptions of pattern combinations are as
follows.
Area
Pattern
Description
First 2/3 of
the field
NTSC : 75 / 7.5 / 75 / 7.5 colorbar
PAL : 75 / 0 / 75 / 0 colorbar
Next 1/12
of the field
Reverse Blue bar
Remainder
of the field
NTSC System
PAL System
1
2
3
4
5
6
7
8
40 IRE “–I” phase
white bar
40 IRE “+Q” phase
black bar
black 3.5 IRE
black bar
black 11.5 IRE
black bar
43 IRE “–V” phase
white bar
43 IRE “+U” phase
black bar
black –3.2%
black bar
black +3.2%
black bar
88
TV-MULTBURST
(NTSC, PAL only)
This pattern is composed of 6 different
frequencies of sine waves to test TV’s
frequency response. The system
frequencies for NTSC are 0.5M, 1.25M, 2M,
3M, 3.58M and 4.2M Hz, and for PAL are
0.5M, 1M, 2M, 3M, 4.43M and 5.8M Hz.

Chroma 2238 Specifications

General

Brand	Chroma
Model	2238
Category	Analytical Instruments
Language	English