Chapter 5: Accessories
Maintaining the Vehicle Cradle
153
Psion Omnii Hand-Held Computer User Manual
5.7.3
Maintaining the Vehicle Cradle
Two latches in the cradle hold the Omnii firmly in place. Although these latches are designed for at least
100,000 insertion and removal cycles, they will wear over time and will no longer lock the Omnii securely in
the cradle. For replacement parts and instructions contact Psion. Partial disassembly is required.
5.7.4
ST1002 Powered Cradle Installation
The ST1002 cradle is designed to allow the Omnii to be powered by a vehicle battery. The battery installed
in the Omnii is also recharged by the vehicle battery. This option accepts DC power sources over the range
11.5V to 30V. Voltages above that require the use of the preregulator (Model No. PS1350).
The ST1002 Vehicle Cradle has a 44-pin connector that allows connection with either the CA3001 Vehicle
Cradle Power and Communications Cable (DE9M serial port, 2 USB Host interfaces, and power cable) or the
power-only CA3000 Vehicle Cradle Power Cable. For connector pinouts and a cable connections diagram,
see “Cable Connectors for Vehicle Cradle Model ST1002” on page A-5.
Figure 5.20 Connecting to vehicle power
For a diagram of a power with communications setup, see “Connecting ST1002 to vehicle power and com-
munications in a typical setup” on page 155.
The Omnii charging LED (see “Battery Charge Status LED” on page 29) indicates that external power is
available, and it also indicates the charging status of the internal battery.
5.7.4.1
Wiring Guidelines
Before installing the cables between the cradle and other devices, consider the following:
•
Ensure that drilling holes will not damage the vehicle or its wiring.
•
Protect cable runs from pinching, overheating and physical damage.
•
Use grommets to protect cables that pass through metal.
•
Use plastic straps and tie-downs to secure cables and connectors in their desired location, away from
areas where they may get snagged or pulled.
•
Keep cables away from heat sources, grease, battery acid and other potential hazards.
•
Keep cables away from control pedals and other moving parts that may damage the cables or interfere
with the operation of the vehicle.
Warnings:
•
Applying a voltage greater than that specified, or reversing polarity, may result in
permanent damage to the cradle power option and will void the product warranty.
•
Operating an Omnii XT15f Arctic unit in operating temperatures from -30°C to
+50°C, requires the use of the power preregulator Model No. PS1370.
CA3001 Vehicle Cradle Power
and Communications Cable
CA3000 Vehicle Cradle
Power Cable
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