User's Manual

Psion Teklogix 7530 Hand-Held Computer User Manual273
Chapter 7: Peripheral Devices & Accessories
Wiring Vehicle Power To The Cradle
7.11.6.1 W iring Vehicle Power To The Cradle
A 1.8 meter (6 foot) extension power cable (PN 13985) 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.
The red lead of the power cable attaches to the positive vehicle supply. The black
lead connects to the negative supply – this should be connected to a proper terminal
block and not to the vehicle body. The power cradle is fully isolated and can be used
with both negative and positive chassis vehicles.
You may have the option of connecting power before or after the ‘key’ switch. It is
preferable to wire the power cradle after the key switch – that is, it cannot be turned
on without the key on. However, if the operator switches the key off repeatedly for
long periods during a shift, it may make more sense to wire the cradle before the
switch.
Keep in mind that the 7530 will continue to operate with or without vehicle power
as long as its battery has sufficient charge.
If an unfused power source must be used, a fuse assembly (PN 19440) must be
added to the extension power cable (the fuse and instructions are supplied with the
cable). Use only a 10A slow blow UL approved fuse in the fuse assembly.