Includes:-

- 977 vehicle tracking operators manual

The  Barrett 977 Software, designed to run on a Microsoft Windows 3.1,
3.11,  95 and NT, controls the Barrett 550 / 950 BaseTransceiver, (via
the serial cable provided).

The   software   controls   the  channel  that  the  base  transceiver
interrogates  the mobiles on and commands the base transceiver to send
the interrogation selective call sequence to the mobiles.

This selective call sequence, based on the CCIR 493-2 maritime format,
contains  the  mobile  number  to  be  interrogated and a control byte
indicates  the  call  is a GPS position request sequenceidentifying it
from a normal selcall or telcall sequence.

The  mobile  transceiver  responds  to the selective call by sending a
selcall  sequence  back to the base transceiver containing its self ID
number  and  position  information decoded from its GPS receiver. This
position  information  is subsequently decoded by the base transceiver
and  communicated  to  the Barrett 977 Tracking Software, the position
information  is  then used to locate the mobile visually on the loaded
maps.

Returned  status  codes  from  the Barrett 550 / 950 Transceiver allow
Barrett  977  to  know  the  status of every location request command.
Codes  are  also provided to indicate if the GPS receiver has lost its
fix or the mobile receiver is no longer responding.

Barrett  977 Software interprets the status codes and displays them as
verbose  messages  in a status window. This allows the operator to see
the system status as well as quickly diagnosing any problems.

Barrett 977 HF GPS vehicle tracking complete package specs

The Barrett 977 HF Tracking System is an Automatic Vehicle Locating
and Tracking Package which utilises the Navstar Global Positioning
System (GPS) and an HF network consisting of a central control
station and mobiles. The computer based tracking system, located at
the control station, automatically polls vehicles or vessels within
the HF network, retrieving their position using a standard selcall
format based on CCIR493-2. The position of the vehicle or vessel
being tracked is then displayed on a computer based map.

The control station consists of a PC loaded with the Barrett 977 HF
Vehicle Tracking Software connected to a Barrett 550/950 transceiver.
Vehicles or vessels to be tracked are fitted with a Barrett 550/950
Transceiver equipped with an optional GPS receiver, which can be
fitted inside the transceiver; or an external GPS unit.

Features:

Monitors, tracks, follows or finds vehicles on maps stored on the
control station computer.

Reports alarm conditions immediately upon receiving a distress signal
issued by any vehicle or vessel and automatically displays its
location on the appropriate map.

Warns when vehicles or vessels approach a user defined exclusion
zone.

Vehicle or vessel positions can be recorded for later playback and
analysis.

Provision to read and update textual information about specific
locations on the map (way points). Waypoints are colour coded dots
which are placed on the map by the user.

Provision to retrieve and store textual information about every
vehicle or vessel in the fleet.

Displays the current mobile position as an icon (various sizes),
continuous track or a trail of points. Clicking on a trail point with
button 2 will display the Selcall ID, date, time, latitude and
longitude.

Telemetry displays the mobile selcall number, speed, distance,
calculated arrival time and bearing to a selected destination, which
can be a location on the map or the location of another mobile.

Maps can be scanned by the customer using an A4 flat bed scanner and
registered using the inbuilt registration system in the tracking
software.

Displays distances in metres, kilometres or nautical miles.

Allows you to define areas on the map within which collision
detection warning will not be activated (blind zones).

System accuracy in the order of 15 to 30 metres (when subject to the
effects of selective availability 100 metres).

Transceiver function access which includes PAGECALL, STATUS CALL and
the ability to control most main transceiver functions from the
computer screen.

SYSTEM COMPONENTS (order separately)

Central Control Station:

Barrett 550/950 Local Control HF Transceiver. RS-232 option for
transceiver (BCO55008) Barrett 922 Power Supply Unit - Suitable
control station antenna - Barrett 912 Broadband Antenna - Barrett 977
tracking package (which includes cables from computer to transceiver)
Computer with a minimum hardware specification as follows:-

486 DX2/66 MHz minimum - 8Mb RAM minimum - MS Windows 3.1, 3.11, NT,
95

2 serial communications ports - 1 parallel port - SVGA (1024 x 768 x
256) graphics card 1 1.44 HD 3.5" diskette drive - 100Mb HDD -
Microsoft mouse

Vehicle Equipment:

Barrett 550/950 Remote Control HF Transceiver GPS software option
(BCO55006 or BCO55007) GPS receiver - either external using NMEA 0183
input on transceiver or internal using Barrett BCA50032 GPS receiver
module. - Barrett 910 Automatic Tuning Mobile Antenna

Vessels:

Barrett 550/950 Local Control HF Transceiver GPS software option
(BCO55006 or BCO55007) GPS receiver - either external using NMEA 0183
input on transceiver or internal using Barrett BCA50032 GPS receiver
module.