Chapter3.
Installation
Stack Pro DVR Users Guide
7
separate power supply. Microphone gain can be adjusted
using the DVR Configuration Utility (see page 20).
!
If audio recording is not required, it may be disabled to
extend the record time (see page 20).
System Harness (red)
Connect the Record Switch and Recording Lamp lead to the
CTL connector. Extender cables are available from Stack’s
dealers.
The Recording Lamp output can be used to drive an input on
some other equipment to indicate the Pro DVR is recording.
This is an open collector output and must not be used to drive
more than 50mA max.
Connect a permanent DC supply of between 9 and 20 volts to
the Power (B+ and B-) connectors. You must provide a
5 amp fuse in the B+ connection to protect the Pro DVR. An
independent switch can be added to isolate the module.
!
A permanent power supply is required to ensure that
recording finishes cleanly when the Record Switch is turned
off. If the supply is obtained from a vehicle’s ignition switch,
the Pro DVR could switch off before the recording has
finished and that recording may be lost (see page 15).
Monitor Harness (blue)
The composite video output can be used to connect to an
external monitor to help align the camera, etc. The video
monitor output is the same as the input. Connect the yellow
phono plug to the video input on your monitor.
Stereo audio monitor outputs are also provided to aid the set-
up of the microphone levels (see page 20). Connect the
white and red phono plugs to the audio inputs on your
monitor or speakers.
Video Overlay Wiring Harnesses
If connection of the Pro DVR to a Stack Video Overlay
system is required, an adapter harness can be supplied for
