This standard specifies the various signals, technical requirements and uses contained in the color television broadcast test pattern. This standard is applicable to the color television broadcast test pattern signal generator in the TV center station, transmitter station, cable TV station and other units that conform to the TV broadcasting system of my country. The main purpose of this standard is to allow viewers to correctly adjust the color television receiver before broadcasting TV programs. GB 2097-1997 Color Television Broadcast Test Pattern GB2097-1997 Standard Download Decompression Password: www.bzxz.net

CB 20971997
This standard amends the national standard GR 2097-80 and improves the technical content. This standard is mainly used by color TV centers and transmitters for broadcasting programs. This standard can directly evaluate the quality of broadcast TV systems and TV receivers, and can also accurately evaluate the 4:3 scanning system to distinguish the 16:9 scanning system. TV viewers can use this figure to adjust the TV receiver to a satisfactory reception state. This standard will be effective from the date of implementation. 2097-80 This standard is proposed by the State Technical Supervision Commission. This standard is under the jurisdiction of the Ministry of Radio, Film and Television.
The main initiator of this standard: Beijing TV Equipment Factory. The main drafters of this standard are Wu Shipeng and Lu Guilan. 35
National Standard of the People's Republic of China
Color television telecast test charts
Colour television telecast Test chartsGB 20971997
Replaces GB 2097-80
This standard specifies the various signals, technical requirements and uses contained in the color television telecast test charts. This standard is applicable to the color television telecast test chart signal generators in the TV center stations, transmitters, cable TV stations and other units that conform to the TV broadcasting system of my country.
The main purpose of this standard is to allow viewers to correctly adjust the color television receivers before broadcasting TV programs. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When the standard is published, the versions shown are valid. All standards are subject to revision, and the parties using this standard should explore the possibility of using the latest versions of the following standards. CB3174—1995 Technical Specifications for PAL-D Television Broadcasting GB 3175. 1—87
Reflective Color Bar Test Chart
Reflective Skin Color Test Chart
GB 3175. 2—87
GR 3175. 387
Transmissive Color Bar Test Chart
CB3175.4—87 Transmissive Skin Color Test Chart GY/T127—1995 Central, Provincial, District, Municipality Radio and Television Station Code 3 This standard graphic is mainly used for broadcasting of color television central stations and transmitters. This graphic can intuitively estimate the quality of radio and television systems and television receivers, and can also intuitively estimate the standard of 4:3 scanning system and future 16.9 scanning system. Television viewers can also use this graphic to adjust the receiver to a satisfactory viewing state. 4Test Diagram Standard Enclosure Sample
Approved by the State Administration of Technical Supervision on May 28, 1997352
Implemented on March 1, 1998
GB 2097-1997
5The four compartments in this diagram are black and white rectangular enclosures, with a correct 4:3 width-to-height ratio outside the enclosure. The inside of the enclosure is a white grid with a gray background. There is a large group in the center of the graphic, and there are "kinds of necessary test signals in the circle. 6 Graphic signal technical requirements and uses
6. 1 Black and white rectangular guard frame
6.1.1 Requirements
Vertical front guard frame: Width - 1.66us
Height - 16 lines at the top, 40 lines of black blocks in the middle, 44 lines of white blocks (13), 15 lines at the bottom, a total of 575 lines. Horizontal guard frame: Height - 14 lines at the top and 13 lines at the bottom. 6.1.2 Use
Width - 1.775ms on both sides, 2.85ms ± 0.23s (17) in the middle, a total of 52s. Check the standard 43 aspect ratio, image center and scanning amplitude, vertical edge data, and check the synchronization separation and clamping. 6.2 Bottom white grid background
6.2. 1 Requirements
14 white lines horizontally, line width is 1 line/field, 2 lines in total. 18 white lines vertically, line width is about 230n±10%, gray background brightness is 30% of black to color.
6.2.2 Purpose
Check geometric distortion and nonlinear distortion. bZxz.net
Check whether "motion blur" and "color purity" are good. 6.3 In-circle signal
6.3. 1 circle
6.3.1.1 Requirements, vertical direction - the amplitude of the image is 504 lines (accounting for 87.65% of the vertical direction of the remaining image). Water direction - the degree of the circle is 34.2μs
6.3.1.2 Purpose: Check the distortion of the child balance. Nonlinear distortion. 6.3.2 Signals in the circle (from top to bottom in order) 6.3.2.1 Black Hanning station name on a white background 6.3.2.\.1 Requirements: The white background is the most arc-shaped, vertical The maximum width is 63 lines, and the station names are arranged symmetrically in the center, with a height of 40 lines. Three-character station name: character width 2.85us or above
Ning distance medicine 2.B5ps
Three-character station name: character width 2.85±s or above
Character spacing is about 1.4ps
Four-character station name: Ning width 2.85ms
Character spacing is about 0.7pg
6.3.2.1.2 Purpose: TV station name.
6. 3. 2. 2 Color and station number
6.3.2.2.1 Requirements, the color shall comply with the provisions of GB3175, the height is 42 lines. The middle is a white background with black Arabic station number, the width of the white background is 2.85 (1 digit) or 5.7/s (2 digits), the length is 42 lines, the height of the black Arabic station number is about 40 lines, the width is 2.15μ8 (in the standard letter sample, the number \1" is used as an example to represent the station number). 6.3.2.2.2, Used for: TV viewers to adjust the "hue", "chroma" and "brightness" of the TV. The channel number is the TV serial number. 6.3.2.3 Resolution line
6.3.2.3.1 Requirements: Divided into five levels, 63 lines 1.8.2.8.3.8,4.8,5.625MHzi
140.220.300,380.450 lines.
6.3.2.3.2, Purpose: Check the resolution of the brightness part of the receiver or monitor; Check the bandwidth of the chroma part: Check the relationship between the sub-carrier 333
(4.43MHz) and the line frequency.
6.3.2.4 Gray signal
GB 20971997
6.3.2.4.1 Requirements: 63 lines high, from black to the power hunting horn, the amplitude is divided into 6 levels. 6.3.2.4.2 Purpose: Check and adjust linearity and white balance. 6.3.2.5 White center crosshairs on black background 6.3.2.5.1 Requirements: Horizontal white line: line width 1 line/field, 2 lines in total. The scanning field order is opposite to that of the outer back line of the circle. Vertical white line is in the center, 5 lines are distributed symmetrically on both sides, a total of 11 lines, 42 lines high, and the line width is 230mg. 6.3.2.5.2 Purpose Determine the center of the whole image, check interlaced scanning, and check static convergence. 6.3.2.6 Color signal
6.3.2.6.1 Requirements; Color
White, yellow, cyan, green, magenta, red, blue, black. The width of each color block is 4. 275μus, quotient 84 lines, the amplitude value of the chrominance signal, the chrominance signal and the chrominance signal phase value shall comply with the provisions of the national standard GB3174 on the 100/0/75/0 color bar signal. 6.3.2.6.2 Purpose: To give the TV audience an overall impression of color, and to adjust the "hue and chrominance" and check whether the "automatic color removal" is normal.
6.3.2.7250kHz square effect
6.3.2.7.1 requirements, repetition frequency 250kHz, amplitude from the level to the illumination level, high 42 lines. 6.3.2.7.2 Purpose: To check the response of the receiver's brightness channel. 6.3.2. 8 white rectangle on a black background, with the station name in Chinese Pinyin in black wax and two colored needle pulses in the rectangle. 6.3.2.8.1 Requirements: The brightness of the white rectangle is about 17.1μ8, and the station name in Chinese Pinyin is arranged symmetrically in black. The abbreviations are in accordance with the provisions of CY/T127-95. The characters are 36 lines high, and the width of the black needle pulse is 230ms±10%, and the height is 42 lines. 6.3.2.8.2 Purpose: Check for high reflection caused by poor antenna or cable matching. 6.3.2.9 Beijing Standard Time Signal Mark
6.3.2.9.1 Requirements: It is represented by white Arabic characters on a black background. The black rectangle is 14.25us wide and 42 lines high. The characters are expressed in six digits of hours, minutes and seconds to calculate Beijing Standard Time. The characters are 36 lines high and about 1.6s wide. There are two white dots separating the hours, minutes and seconds (in the standard pattern, the time 19:00:00 is used as an example). 6.3.2.9.2 Purpose: For audience to use for time synchronization. 6.4 Color signals around the circle
6.4.1 Left Da
Left E.The signal in the corner square is -(R-Y) signal (270) The signal in the lower left corner square is +(R-Y) signal (90°); The signal in the left middle rectangle is (G--Y) = 0326° signal. 6.4. 2 Right
The signal in the upper right corner square is -(B-Y) signal (180°) The signal in the lower right corner square is +(B-Y) signal (0\); The signal in the right middle rectangle is (G-Y) = 0,146° signal. 354
Chinese Pinyin abbreviation station name
9:00800
GB 2097-1997
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