Psion Teklogix ISO 9001 Manuel d'utilisateur télécharger pdf (Page 23)

Chapter 2: Hardware Information

NEO Expansion Port Theory of Operation

Psion Teklogix NEO HDK User Manual 15

Figure 2.3 Expansion Port Label Removed

When designing connectors:

• Ensure that current is equally shared between the common pins for ground and battery.

• Design such that shock or vibration is not likely to force a disconnection of the

DETECT pins.

• Ensure that connector pins are not likely to catch on the edges of the plastic mask during

mounting or dismounting.

2.7.3 NEO Expansion Port Theory of Operation

The NEO expansion interface contains a USB host interface, a trigger input, a detect input,

and a software-switched battery output.

The USB host interface can be used as the interface to USB devices. The USB power must

be provided by the expansion device, by regulating the switched battery output. The

Docking and Tether Port Service (DTS) enables the USB interface when an expansion

device is detected.

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Psion Teklogix ISO 9001 Manuel d'utilisateur Page 23