Psion Teklogix Hand-Held Computer 7530 G2 - Manual (Page 260)

Chapter 6: Peripheral Devices & Accessories
Wiring Vehicle Power To The Cradle
232 Psion Teklogix 7530 G2 Hand-Held Computer User Manual
Warning: Applying a voltage above 90VDC or reversing polarity may result
in permanent damage to the cradle power option and will void the
product warranty.
Warning: TO AVOID ELECTRIC SHOCK when the powered cradle option
is installed, always ensure that the rear panel ground lug on the
picker cradle is connected to the vehicle chassis. Failure to do this
could result in serious injury or death.
The metal chassis of the picker cradle must be connected directly to the chassis of
the vehicle. A safety ground lug (clearly labelled on the rear of the cradle chassis) is
provided for this purpose. The grounding strap must connect from the ground stud
on the picker cradle to a solid, reliable contact point on the main portion of the
vehicle chassis. It must not be connected to battery negative or a terminal block.
This grounding strap ensures that if there is a fault in the vehicle wiring or in the
picker cradle power module, the picker cradle cannot be at a hazardous voltage with
respect to the vehicle chassis.
Connection between the picker cradle ground lug and the vehicle chassis should be
done with a 16 gauge ground strap (ground wire). Connect the ground strap to the
picker cradle utilizing the ground lug hardware supplied with the picker cradle and a
#10 heavy duty wire crimp ring terminal. Torque the ground lug hardware to 23.0
+/- 2.0 in-lbs. Connect the other end of the ground strap to a solid, reliable point on
the main portion of the vehicle chassis, ensuring a solid electrical connection.
As with other vehicle cables, the routing of the ground strap should be carefully
considered to ensure it does not pose a hazard to the operator or the safe operation of
the vehicle. If necessary, secure the ground strap with cable ties or some other
mechanical means to prevent loops or loose lengths of wire that could catch on
stationary items when the vehicle is in motion.
6.11.6.1 Wiring Vehicle Power To The Cradle
A 1.8 meter (6 foot) extension power cable (PN 13985-302) is supplied with your
power cradle. This cable should be wired to a filtered, fused (maximum 10A)
accessory supply on the vehicle. The power cradle draws no more than 8A (less if
the accessory supply is greater than 12V). Any additional wiring, connectors or
disconnects used should be rated for at least 10A.