Se Jin Electron Inc SPR-8695TU 用户手册

Scope

This document provide a specifications for the Sejin standard USB MINI keyboard With trackball (Model

No.: SPR-8695TU)

which is electrically compatible to IBM PC/AT and USB systems.

Environmental Requirement

- Ambient temperature and humidity(operation)

* temperature : 0 ~ 40℃

* humidity : 10%~85% RH

- Ambient temperature and humidity (storage)

* temperature : -20 ~ +60℃

* humidity : 10%~95 % RH

Electrical performance

*Voltage : DC 5V +/- 10%

*Current : 100㎃(Max)

*Contact resistance( sheet) : 800 ohm Max

*Insulation resistance : 100M ohm Min(DC250V)

*Withstand voltage : AC 150V/Min

*Character and bounce :

Operation force shall be applied according to the normal operating method at 5V DC,

5 ㎃.

There shall be no bounce and chattering within 10 msec when it is measured a specially prepared

tester or synchroscope.

Chattering and bounce are defined in the following diagram ;

*Operation resign