NTSC/PAL Multi-standard TV signal generator(YDC-868-4) - 868-4

YDC-868-Series TV Signal Generator

YDC-868-4 NTSC/PAL Multi-standard TV signal generator

I have many years of production plant in the PAL series of computer storage-type television signal generator, based on the country's first research and development and production of the YDC-868-4-type multi-standard TV signal generator to meet the production needs of manufacturers and maintenance departments. The machine consists of single chip and color coding, control circuits and other components, generated by the software system for both PAL and NTSC formats of the sixteen test signal, the image clear and stable, independent of temperature, humidity, and voltage.

First, the technical indicators
1, the TV system: PAL, NTSC
2, line frequency: PAL system 15625Hz; NTSC system 15734.26 Hz
3, the field frequency: PAL system of 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 :1-56CH
8, the RF range> 75db
9, power supply :180-240V AC 50 Hz
10, Dimensions: 203 X 220 X 75 plastic standard chassis
11, Weight: 1Kg
12, Power: <8W

Second, the image function
1, eight vertical color bars: the total for the TV performance of the whole school, to compare the test; check CRT
Incentives, and the degree of color suppression of the carrier to pay for black and white TV to check the video gain and gray scale.
2, black: for testing television transmitters transmit power used.
3, the center cross line: to adjust the TV's frame rate and line width, and graphic geometric distortion.
4, grid and grid: Adjust the frame, line of linear, so that the four corners of the square and the center of graphic squares equal
Size, and is square.
5 ideas: Adjust the focus so that ideas are smaller, the higher the resolution.
6, White Point: White Balance adjustment purposes.
7, Red Square: Check the color purity and the red electron gun measured.
8, Green Field: Check the color purity and measured green electron gun.
9, the blue field: Check the color purity and the blue electron gun measured.
10, VHF 1-12 channel selection is used to select the signal.
11,38 MC IF signal is used to repair the image channel.
12, UHF channel selection signal is used to select 13-56.
13, sound: to proofread and check sound channels.
14,1 Vp-p video output: check the video signal.

Usage:
Open the unit, pull out the rod antenna, UV switch, playing to the frequency corresponding to the TV
Track, fine-tune the TV to receive the frequency tuning knob stable image and sound (may be appropriate to turn the antenna location and direction) and then select the button to the desired function of the graphics.
Note: When opening