Spectrex 20/20CTIN-CTIP Flame Detector - Manual (Page 52)

Spectrex Inc. - SharpEye TM CCTV Model Flame Detector Manual – TM 788100, Rev. A January 2005
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CCTV Wire Type
The wire for the video picture must be Twisted Pair Wire.
Network Wiring UTP
Wire Gauge 24 AWG or thicker
Category Type 2, 3, 4, 5 or better
Impedance 100±200 ohms
DC Loop Resistance 52 ohms per 1,000ft (300m)
Differential Capacitance 19pF/ft max
The Twist Pair must be connected to a PASSIVE or ACTIVE receiver depending
on the length cable from the CCTV to the receiver.
0 - 1000 ft (300m) Require PASSIVE receiver
660 - 3300 ft (200m - 1000m) Require ACTIVE receiver
The connection from the receiver should be made by coax cable connected to the
monitor or through a switching box when connecting two (2) or more CCTVs to the
same monitor.