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Psion Teklogix 7530 G2 Hand-Held Computer User Manual 233
Chapter 6: Peripheral Devices & Accessories
The Port Replicator
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 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 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.
6.11.7 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 functionality of the 7530 G2 tether port is duplicated on the port replicator. In
addition to the tether port, the replicator is equipped with a standard 9 pin RS232D
serial interface. This interface is typically used for fixed peripherals such as printers.
Your serial device likely includes a suitable cable connector for this port.
Note: The 7530 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. Service offices are listed in Appendix A: Support Services
And Worldwide Offices.