CCTV TESTER User Manual
19
Single test:
Test cable status, length and attenuation.
Repeat test:
Continue to test cable status, length and attenuation.
Status:
After link up, screen display “online”, if not link up or open circuit, screen
display “open circuit”, if cable pair is short circuit, screen display “short circuit”.
Length:
The max test length is 180 meters, when cable is open circuit or short circuit,
can test the cable length, if screen display “online”, the testing result would be not
accurate.
Cable quality test:
Green is good quality cable, Yellow is Poor quality cable, Red is
water poured cable, the attenuation value will be displayed when cable over 10 meters.
Advanced Test:
Test cable pair status, length, attenuation, reflectivity, impedance,
skew and other parameter.
Attenuation reflectivity:
After link up, if reflectivity value is 0, it is the best quality
communication
Impedance:
After link up ,if the impedance value is 100 Ω,it is the best quality
communication, the range is generally in 85-135 Ω
Skew:
After 1000M link up, when skew value is 0ns,it is the best quality
communication, if over 50ns, will cause a Bit Error Rate in the transmission.
Click “Help”, check the instruction of all parameters.