Chapter 7: Analog Tv Standards & Color Systems - Deviser S7200 User Manual

Chapter 7: Analog TV Standards & Color Systems
There are many different TV standards in use around the world, defining in detail the acceptable baseband
and RF structure of a signal. For broadband engineers / technicians, there are three key points: bandwidth,
the dimensions of the lower (vestigial) and upper sidebands, and the frequency & amplitude relationships
of the video (luminance), color (chrominance) and audio subcarriers.
In terms of these parameters, the vast majority of TV transmissions fall into six categories, which are
illustrated in the following diagrams.
(Note: These diagrams do not define parameters such as field frequency, line frequency, or color encoding
technique, points which distinguish the NTSC, PAL and SECAM systems.)
Today, there are 10 primary TV standards in use around the world. These standards are: B, D, G, H, I, K, K1, L,
M, and N. There are three types of color transmission system: PAL, NTSC, and SECAM.
Different standards and systems have different field frequencies, line frequencies, and color encoding
techniques. For example, Europe and China use the PAL-D color transmission system and TV standard, while
North America (USA, Canada & Mexico) use NTSC-M color transmission system and TV standard.
Refer to the table below for information on TV-standard/color system compatibility. Letters (e.g. B, G, M)
refer to TV standards. Encoding techniques (e.g. NTSC, PAL) refer to systems.
TV Standard and Color Transmission System Relationships:
Unit Conversion Chart
Unit Impedance 50Ω
μV 1μV=10-6V
mV 1mV=1000μV
dBμV 0dBμV=1μV
dBmV 0dBmV=1mV
dBm 0dBm=107dBμV
Standard
B
D
G
H
I
K
K1
L
M
N
Part III: Background and Concepts
Impedance 75Ω
1μV=10-6V
1mV=1000μV
0dBμV=1μV
0dBmV=1mV
0dBm=108.8dBμV
Compatible with:
PAL,SECAM
SECAM
PAL,SECAM
PAL,SECAM
PAL
SECAM
SECAM
SECAM
NTSC,PAL
PAL
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