Psion Teklogix 7535 G2 Manual de usuario descargar pdf (Pagina 227)

Chapter 6: Peripheral Devices & Accessories

Wiring Vehicle Power To The Cradle

Psion Teklogix 7535 G2 Hand-Held Computer User Manual 197

6.11.7 Wiring Vehicle Power To The Cradle

A 1.8 meter (6 foot) extension power cable (P/N 13985-302 or 13985-301) is supplied with

your power cradle. This cable should be wired to a filtered, fused (maximum 10A) acces-

sory 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 con-

nects 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 prefera-

ble 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 7535 G2 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 as-

sembly (P/N 19440-300) 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.

6.11.8 The Port Replicator

The port replicator is an optional accessory that allows tethered devices (e.g., scanners) as

well as mounted peripherals (e.g., bar code printers or weigh scales) to be attached to the

picker cradle. The replicator can be used with or without the cradle power option. The func-

tionality of the 7535 G2 tether port is duplicated on the port replicator. In addition to the

tether port, the replicator is equipped with a standard 9 pin RS-232D serial interface. This

interface is typically used for fixed peripherals such as printers. Your serial device likely in-

cludes a suitable cable connector for this port.

Note: When connecting P/N 13985-301 (Screen Blanking 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 insu-

lation. A minimum 2.8mm distance, or 0.4mm distance through insulation, is

required for the separation.

Note: The 7535 G2 picker cradle can be ordered with the port replicator option installed,

or it can be retrofitted later by an authorized Psion Teklogix service depot.

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Psion Teklogix 7535 G2 Manual de usuario Pagina 227