© 2003 Michael J Archer
v1.1
- 6 -
Spot Output
S1 S2 S3 S4
04 08 12 16
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03 07 11 15
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02 06 10 14
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01 05 09 13
Chapter 1 – System Overview
1.3 Camera
Connection
Connecting all your cameras to the camera ports see diagram below, which are located at the
rear of the DVR system unit. Depending on the System you have, there will only be
connections for that number camera unit.
The connector is the standard BNC or Bayonet type. Camera signals should be of the
standard 1v vpp using 75
Ω
cable. We recommend good quality cable, talk to your camera
supplier for advice.
We suggest connecting the cables before you put power to the camera/s. The DVR has no
voltage protection inside the system unit.
Back of a Typical DVR
4Camera 8Camera 12Camera 16Camera
The camera inputs are numbered from the bottom to top, working from left – right. We may give better spacing
between the inputs shown above, as the BNC connectors can be cumbersome when close together. So if there is a
gap between the inputs do not worry this makes not difference to the system it’s purely cosmetic.
Note that the BNC’s can be detached. As this can give a little protection against leads being pulled from the system
by accident.
The Spot Outputs (S1 – S4) give a standard composite -video signal on the first camera input
for each DVR card. The default output is the bottom most input on each DVR card, only by
modifying a jumper on the capture board can you change this. We do no recommend you
change this setting.
DVR Card jumper setting
Intelligent Security & Fire Ltd