User manual

Chapter 7: Peripheral Devices & Accessories
8525/8530 Installation In Vehicles
268
Psion Teklogix 8525/8530 Vehicle-Mount Computer User Manual
7.4.8 8525/8530 Installation In Vehicles
Note: The metal chassis of the 8525/8530 is equipped with a ground lug
(located on the underside of the 8525/8530, beside the cable management
bar) to provide an additional ground to the vehicle, if desired. The
grounding strap must connect from the ground stud on the 8525/8530 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.
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 from catching on
stationary items when the vehicle is in motion.
7.4.9 Wiring Vehicle Power To The 8525/8530
Warning: The 8525/8530 accepts DC power sources between 10V
and 90VDC nom.
Applying a voltage above 90VDC or reversing polarity may
result in permanent
damage to the 8525/8530 and will void the
product warranty.
A 1.8 meter (6 ft.) extension power cable (PN 13985-002 std or –001 display off) is
supplied with your 8525/8530. This cable should be wired to a filtered, fused
(maximum 10A) accessory supply on the vehicle. The 8525/8530 draws no more
than 8A (less if the accessory supply is greater than 12V). Any additional wiring
(minimum 18 gauge), connectors or disconnects used should be rated for at least 90
VDC, 10A.
When connecting PN 13985-001 (display-off version), ensure that the screen
blanking wires (clearly labelled) and the power wires (red/black leads) are reliably
secured away from each other, or are separated with reliably secured certified
insulation. Minimum 2.8mm distance, or 0.4mm distance through insulation is
required for the separation.
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 8525/8530 is fully isolated and can be used
with both negative and positive chassis vehicles.