Spacetronik SP-IPL07AHD, Руководство пользователя

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The SYNC signal level: measuring the amplitude of the video sync pulse, for determining the video lev
el is correct and the coaxial cable connectivity. Sync level range is 300 ± 35mV in PAL format
(NTSC format: 40 ± 5IRE), the level is too low will cause the image to fracture or scroll; Level is too
high will reduce the image color levels and dynamic range.
COLOR BURST chroma level: Measuring camera color burst level, to determine whether the coaxial
cable transmission for the best detail and color. Chroma standard level is 280mV in PAL format and is
40 IRE in NTSC format. Chroma level is low, the color will become dark, color level is too low, the
details of monitor reception image will be lost, and even become black and white; chroma level
is too high, the image will be displayed spot , affect the image detail and clarity. Coaxial cable is
too long will reduce the chroma level.
Image loop test ： Test video optical transmitter and receiver and video cable , Connect one end to the
tester “VIDEO OUT” port ,and the other end connected to “VIDEO IN” port, the signal sending via
“VIDEO OUT” port
，
and receiving via “VIDEO IN port
，
if received, display multiple gradually
Page.27.
NTSC Video signal level 140±15IRE
Chroma level( COLOR BURST) 40±5IRE
SYNC signal level 40±5IRE
PAL Video signal level 1000±200mV
Chroma level( COLOR BURST) 300±35mV
SYNC signal level 300±35mV