BotCorp America CT2A Benutzerhandbuch

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Operational Manual
Space-based Short Messaging System (SSMS)
BOT-SSMS-CT2A
CT2A
Rel. 1.0, 2001-Jun-12
Preliminary
Commercial Proprietary
Controlled Circulation - Do Not Duplicate
automatically charged from the vehicle power using circuitry which is internal to the transceiver. In order
to meet specific user requirements, the backup power supply battery must be sized to match the event
timetable and the required backup battery life. In the event that the battery voltage of the main and
backup battery reaches the battery endpoint voltage (typically 10V), the unit disconnects from the battery
source and inhibits all further transceiver operation until voltage is restored to usable levels. While a
number of battery chemistries can be used with the transceiver, lead acid, gel electrolyte have been
determined to provide the best compromise between cost, capacity and low temperature operation.
In order to size the 12V(nominal) backup battery an equation must be applied as follows:
battery capacity in Amp/Hrs = anticipated non-charge period in days  X .05 X  # of reports per day
4.3
  ANTENNA  MOUNTING  AND INSTALLATION
The  antennas is designed to be mounted on top of a mobile platform such as a trailer, vehicle roof or
mast. The antennas should be mounted 1m (3’) apart with a clear shot at the sky and no obstructions in
the antenna’s field of view. Failure to obtain a lock on the service providing or GPS satellites indicates
an inappropriate mounting position..
The antenna can be mounted with the double-sided tape, epoxy or a urethane adhesive. The connecting
wire should be secured at 20cm (approx. 10”) intervals using cable clamps. It is important that the
antenna mounting method withstand any foreseeable wind loading and is not in proximity (18”) to human
beings for prolonged periods of time.
4.4
  TRANSCEIVER   MOUNTING  AND  INSTALLATION
The transceiver is to be mounted inside. It is advisable that the unit be secured using the shock mounts
incorporated into the transceiver. Figure 1. shows  the mounting hole arrangement. A ‘drip loop’ should
be used for the antenna cable to transceiver connection so that any condensate that might accumulate on
the cable does not flow into the connector. The transceiver is provided with a 6ft power/sensor
connecting cable.
The  cable consist of 3 twisted pair groups (e.g. 6 Wires). The cable should be wired according to the
following color coding: