Wiring
Wiring is done with runs of cable for power, video and control. Optional wiring can be installed for the relay
output and alarm inputs. All cables enter the enclosure from the top on all pendant installations and through
the conduit fitting on all in-ceiling installations. Refer to the Technical Information section for all electrical
requirements.
Power cables carry AC power and are usually a two-conductor type ranging in size from 20 to 12 AWG. The
power source used should be a UL listed Class 2 indoor/dry or Class 3 outdoor/wet rated type power supply.
The leads should be connected to Terminal Block 1 (TB1). The size of the two-conductor cable depends on
indoor/outdoor application and cable distance as shown in Table 4 of the Technical Information section. Refer
to the table in the Introduction for power supplies available from Vicon (single and multi-channel).
In the standard version, video cables carry the composite video signal and Vicoax signals out of the
SurveyorVFT over coaxial cable. In Vicoax mode, the video signal also carries the control signals. The video
cable should be connected to the BNC female connector J1 for installations using coaxial cable; for UTP
installations, twisted-pair video wires should be connected to TB4. For the fiber-optic version, video is carried
through connector J2 on the customer interface board to a “daughter board” with a standard fiber-optic
connector. For the ViconNet version, video is digitized and made available through the RJ-45 LAN
connection. Refer to the Reference section of this manual for information on recommended cable types and
maximum distances.
For the standard coax and twisted-pair versions, control cables carry the Pilot/NOVA/VPS digital signals and
require individually-shielded twisted-pair sets. The RS-422/485 signal carries the Pilot/NOVA/VPS protocol
(data). The RS-422 protocol is used for single camera dome applications. RS-422 signals are always active
and do not have a tri-state (high impedance) state. The RS-485 protocol is used for multiple camera domes in
a daisy chain configuration. RS-485 signals are not always active and do have a tri-state (high impedance)
state. Thus, up to 32 SurveyorVFT units maximum (at a maximum distance of 5000 ft (1524 m) end-to-end)
can be daisy chained to any other compatible RS-485 device, including another SurveyorVFT. Refer to the
customer interface board and Figure 19 for signal connection points. The type of cable required depends on
the cable distance and number of wire pairs within a cable, as shown in the Reference section. These signals
are connected to Terminal Block 3 (TB3). There can be a maximum of two control cables (twisted-pair sets),
depending on the mode selected, Simplex or Half Duplex operation. For the fiber-optic version, RS-422 data
is carried through connector J2 on the customer interface board to a “daughter board” with a standard fiber-
optic ST connector. For the ViconNet version, communication signals are digitized and are made available
through the RJ-45 LAN connection. Refer to Figure 19.
Half Duplex:
This RS-422/485 protocol type allows two-way command and response flow between the
SurveyorVFT and the control system that requires two individually-shielded twisted-pair
cables.
Simplex:
This RS-422/485 protocol type allows command flow from the control system to the
SurveyorVFT only requiring one shielded twisted-pair cable.
COMMAND IN ± (COMM IN):
A signal from the CPU that causes some function to occur in the
SurveyorVFT.
RESPONSE OUT ± (RESP OUT):
A signal from the SurveyorVFT to the CPU in response to a
COMMAND IN signal or triggered by an alarm input.
Additionally, there are two jacks provided for audio, JP2 (MIC) for Audio IN and JP1 (SPK) for Audio OUT. At
this time, JP1 is not available.
XX134-07-00 Rev 908 SurveyorVFT Camera Dome System
5BWiring
•
27
Summary of Contents for SVFT-C22
Page 2: ......
Page 4: ......
Page 6: ......
Page 18: ...10 3BIntroduction XX134 07 00 Rev 908 SurveyorVFT Camera Dome System...
Page 34: ...26 4BInstallation XX134 07 00 Rev 908 SurveyorVFT Camera Dome System NOTES...