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7. TROUBLESHOOTING
a. Video image appears scrambled – (i) Check to be sure all UTP wiring connections and
polarities are consistent at each device and the ST-CCTV-VBAC16 RJ45 input(s).
b. Video image has some ripples – This may be caused by electro-magnetic
interference. Be certain all cables are away from any devices that may cause such
interference (e.g., electrical motors, furnaces, etc.).
c. Video image lacks brightness and/or sharpness – Adjust the ST-CCTV-VBAC16’s
potentiometer(s) for brightness and/or DIP switches for distance. A video waveform
monitor or other video test equipment should be used.
d. Can shielded twisted pair cable be used – Although shielded twisted pair cable can be
used, the cable’s high-frequency roll-off will degrade the distance performance.
Therefore, it is not recommended beyond a couple hundred feet.
e. Additional troubleshooting assistance can be found on-line at
www.securitytronix.com
in addition to support from SecurityTronix sales engineers at 1-610-429-1511.
