Sentinel HDX Quick Start Manual And Installation Manual - page 6
Operating Environment and Unit Placement Considerations
Prior to installation, some thought must be taken to determine the optimum placement of the
recorder unit in regards to video capture windows, power cable routing, and radio frequency
attenuation of the wireless subsystems.
The recorder unit contains two (2) 140 degree visible angle image sensor capture devices.
Care must be taken to optimize viewing angle both internally and externally in the vehicle. The
large viewing angle grants a great deal of flexibility in mounting locations. Ideally, the internal
capture window will include both the driver and passenger’s torsos. In a passenger vehicle, the
unit is typically placed behind the rear view mirror with the rear-facing image sensor protruding
below. In commercial trucking environments, the unit is generally placed where a centerline
again captures both occupants’ torsos. In either installation, it is imperative to generate test
recordings using the panic button to confirm optimum viewing angle.
The Sentinel HDx unit contains 3 distinct radio subsystems including GPS, 802.11 wireless, and
Bluetooth. A common concern across the systems is the Faraday Cage effect the vehicle’s
metal body presents to an RF signal. In general, the more unimpeded a line of sight between
the recorder and the device it is communicating with, the better the signal.
The GPS module is located at the top of the HDx unit. This antenna receives signals from the
Global Positioning Satellite system located in geosynchronous orbit around the earth. Optimum
GPS positioning information relies upon communication with the greatest number of individual
satellites on the horizon. The same locations referenced above, behind the rear-view mirror in
passenger automobiles and similar position of the windshield in commercial trucks, generally
represents the best option for signal reception.
6
Installation Guide
Camera Vision Solutions
4616 West Howard Lane Bldg 5, Suite 550,
Austin, Texas 78728
512-651-5277,