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The VH851 and VH1651 UTP Video Receiver Hubs are
designed to receive standard UTP video and output
standard coax video.
Step 1)
Checkthetwistedpairforcontinuity.Dothisbyshorting
thepairofwiresatone end andusean ohm metertocheck the
resistance at the other end. Also, use a multimeter to test the
line tomakesurethereisnovoltageonit. Thechartbelowwill
give you the length of your wires for a measured resistance.
Testingeachlineandrecordingthelengthforeachcamerarun
can greatly reduce installation time.
For distances greater than 1,500 feet other long range
units may be needed.
Step 2)
Connect the twisted pair from each transmitter to the
screw terminals noting the polarity of the connection. If the
wiresarereversedthevideowillbeunviewableonthemonitor.
Reversing the wires will not damage the unit.
Step 3)
The VH851 and VH1651 are powered from a 24VAC
wall pack. In the case of several units a larger central supply
maybe used. Contact NITEK®TechSupport forrecommenda-
tions. It is recommended that each video out BNC jack be
connectedtoatestmonitorfirstforthepurposeofadjustingthe
receivers. After having adjusted each receiver, connect them
to the rest of your video system.
Installation
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