User's Manual

DRAFT TrimTrac 1.5 Technical Manual v0.3ab 7
Cost-effective, Universally Available Communications
The TrimTrac 1.5 takes advantage of the near universal availability of GSM SMS
text messaging while also leveraging cost-effective GPRS data rate plans.
Typical SMS plans offer very extensive inter-network roaming capabilities, both
within a host country and internationally. SMS plans also tend to be too pricey
for applications requiring more than a few reports per day.
GPRS data plans, on the other hand, typically allow for lower recurring
communication costs although GPRS coverage and roaming can be restricted in
some areas. The TrimTrac 1.5 takes advantage of both technologies by
automatically selecting GPRS wherever such service is available, while relying
upon SMS text messages as backup when outside GPRS coverage. This helps
minimize recurring communication costs while allowing the greatest coverage
possible.
Hardware Options
A number of different hardware options are available to enhance the suitability of
the TrimTrac 1.5 to particular application requirements. These options include a
miniature external GPS antenna that allows for more discrete, protected
installation of the TrimTrac 1.5.
In addition, two plug-in modules are offered; both provide connection to external
9-32 VDC power to eliminate the need to change batteries and can monitor inputs
of three different priority levels. The control module also provides two outputs
that can be used to control other on-board devices or systems, such as door locks,
immobilizers and remote start systems.
To address different mounting requirements, two mounting brackets are offered.
A metal bracket is available for more permanent installations while a “quick-
release” style plastic bracket is used when rapid insertion and removal of the
TrimTrac 1.5 is desired. This is particularly useful when a battery- powered
TrimTrac 1.5 is routinely moved from one asset to another.
Optional Plug-In Modules
The following options are available as plug-in modules that replace the standard
TrimTrac 1.5 batteries:
Provisioning Module. Allows configuration of the TrimTrac 1.5 via a
USB 2.0 connection to a PC.
Vehicle Adapter Module. Allows connection to an external 9-32 VDC
power supply and provides three types of open/closed switch and wiring
monitoring connections. The Vehicle Adapter Module includes a
rechargeable stand-by battery that allows continued operation of the
TrimTrac 1.5 for a limited period of time if external power is lost.
Control Module. Same as a Vehicle Adapter Module plus two 500 mA
low-side driver outputs capable of controlling one automotive grade relay
each.