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 ~ 50
a
C
* humidity : 10%~85% RH
Ambient temperature and humidity (storage)
* temperature : -20 ~ +60
a
C
* humidity : 10%~95 % RH
Electrical performance
*Voltage : DC 5V +/- 10%
*Current : 170
㎃
(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.
