Rs485 Twisted-Pair Telemetry; Table 1-8 Cat5 Cabling And Utp Options - Honeywell ACUIX ES Installation And Configuration Manual

Introduction to the ACUIX ES PTZ Dome

RS485 Twisted-Pair Telemetry

24
Table 1-8 CAT5 Cabling and UTP Options
Distance Receiver model and Description
Up to 500 feet NV-212A video transceiver. Cable
(150 meters) must be within the same building as
there is no transient protection
Up to 1000 feet NV213A video transceiver
(300 meters) NV-813A 8-port passive hub
NV-1613A 16-port passive hub
Up to 3000 feet NV652R active receiver
(1 kilometer) NV862 8-port active receiver
NV-1662R 16-port active receiver
• Star wiring configurations are acceptable with the use of a code distribution unit
such as Honeywell HDCD8TP.
• Always keep RS485 data cables away from all other cables and run them in
complete isolation whenever possible.
• Couple all data cable shields to data ground at the control point end only. The
cable shields should not be connected at any other point.
• Connect the cable shield at the controller and connect the cable shield through any
junction boxes installed, but do not connect the cable shield to the dome.
• Also see General Cautions and Notes for All Cable
When using RS485 twisted-pair telemetry, the video signal is transmitted via a coaxial or
CAT5 twisted pair cable and the control data (telemetry) information is a twisted-pair cable.
RS485 twisted-pair telemetry cabling is installed and wired as a network that consists of one
or more daisychains. When more than one daisychain is installed, an RS485 telemetry
distribution unit must be installed to broadcast telemetry data across the entire RS485
network. Multiple distribution units can be installed on the RS485 network to allow for
complex wiring arrangements.
The recommended RS485 cable is a 20-gauge unshielded twisted pair cable. This cable is
a single twisted-pair overall shield and the maximum distance for a daisychain is up to 4000
feet (1219 meters). These cables are available in a series of overall outer sheaths from
standard internal usage finishes to external containment and direct burial types.
Video Telemetry
(Telemetry over
Video)
Yes
Yes
No. Telemetry must
be via RS485 using
another pair
Installations, page 20.