Page.6.
SYNC level: by testing the amplitude of the video sync pulse to verify if the video level is correct and
the coaxial cable connectivity is good.
For PAL format, the SYNC level is 300 ± 35mV
For NTSC format, the SYNC level is 40 ± 5IRE
If the level is too low, it will cause the image to fracture or scroll, but if the level is too high, it will lead
to reduce the image‘s color levels and dynamic range.
COLOR BURST chroma level: by testing the color burst level to estimate whether the coaxial cable is
the best to transmit the details and color.
For PAL format, the Chroma standard level is 280mV
For NTSC format, the Chroma standard level is 40 IRE
If the Chroma level is low or too low, the color will not bright, and some details on the iamge will lost
or get dark or white when the monitor receives the iamge.
If the Chroma level is too high, there will be spots on the image. If this occurs, it cannot get the clear
image with all the details.
If the coaxial cable is too long, it will reduce the chroma level
2.3.5 PTZ controller
Display the input video images. Pan/tilt the P/T unit and zoom in/ out the image. Setup the controlling
parameters like protocol, communication port, baud rate, PTZ ID, pan/tilt speed; set and call preset
position.
2.3.6 Enhanced Color bar generator
The tester sends out the color bar by its BNC output to the monitor at the monitoring center. If the
monitor receive the color bar, it means the video transmit channel works normally. Meanwhile on the
basis of the received color bar, the monitoring center can judge if transmission has loss or interference.
The tester can also send out the color bar by its BNC output, then receive and display the color bar by
Summary of Contents for SED-MON-IT-860
Page 1: ...IP camera tester USER MANUAL V01 00 ...
Page 17: ...Page 12 2 5 Function ...
