Multi-standard TV signal generator 

 I have many years of production in the factory series of computer storage-type PAL TV signal generator, based on the research and development and production of the country's first multi-standard TV out Z4M/8684 signal generator to meet the manufacturers and maintenance departments. The machine consists of microcontroller and color coding, control circuit and other components, software produced by the two formats PAL and NTSC system, the sixteen kinds of test signals, the image clear and stable, independent of temperature, humidity, voltage. 
 First, the technical indicators 
 1, the TV standard: PAL, NTSC 
 2, line frequency: PAL system 15625Hz; NTSC system 15734.26 Hz 
 3, the field frequency: PAL system, 50 Hz; NTSC system of 60 Hz 
 4, the color subcarrier: PAL system 4.43361875M Hz 
 3.579545 M Hz NTSC system 
 5, the audio signal: PAL system 6.5MC 1000Hz and electronic music 
 NTSC system 4.5MC 1000 Hz and electronic music 
 6, Video Output: 1Vp-p 
 7, the RF output :1-50CH; L-band side 1-5, H-frequency end of 6-12, U-band side 13-50 
 8, the RF range> 75db 
 9, power supply :180-240V AC 50 Hz 
 10, Dimension: 203 X 220 X 75 plastic standard chassis 
 11, Weight: 1Kg 
 12, Power: <8W 
 Second, the image function 
 Eight vertical color bars: the total for the whole school TV performance comparison test; check the CRT 
 Incentives, and pay for the color carrier rejection, the black and white TV to check the video gain and gray scale. 
 2, Black: TV transmitters for the measurement of transmission power used. 
 3, center cross line: to adjust the TV's frame rate and line rate, and graphic geometric distortion. 
 4, grid and grid: Adjust the frame, the linear, the graphics and the center of the four corners of the grid squares equal 
 Size, and square. 
 5, idea: the idea that the smaller the focus adjustment, the higher the resolution. 
 6, white field: white balance adjustment with. 
 7, Red Square: Check the red color purity and measured electron gun. 
 8, Green Field: Check the green color purity and measured electron gun. 
 9, Blue Course: Check the color purity and the blue electron gun measured. 
 10, sound: to proofread and check sound channels. 
 11,1 Vp-p video output: Check the video signal. 

 Third, the use of 
 Pull out the antenna, turn the power on, select the appropriate frequency band and the television receiver corresponding band, fine-tune the frequency 
 Knob until you receive a stable graphics, according to the need to select the desired test pattern. 
 Note: When the boot LED display a "day" words when a local power outlet is bad, you should power off the machine, wait for five seconds after the restart, and check the power voltage is too low.