User's Manual

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SEJIN ELECTRON, INC

1 SCOPE

This document provides a specification for the SEJIN AND OEM USB keyboard.

2 THE SEJIN Mini-keyboard with FSR MOUSE,SMART CARD

z Designed with the users in mind, it has a pleasant appearance and is

Convenient to use.

z No extra power supply is required.

z It is compatible with the Microsoft Keyboard and Trackball, Smart card

3 Mini-keyboard with FSR MOUSE INSTALLATION

z Turn the power supply off to your computer.

z Check the USB port at the back of your computer and insert

The connrctor at the end of the Mini key-board cables into the USB port

z Turn the power supply on to your computer.

4 MECHANICAL PERFORMANCE

4.1 Key switch Operation

2.1.1 Operating system

Non - lock rubber tactile feeling.

2.1.2 Stroke

3.5±0.5mm with measuring load 200gf applied.

2.1.3 Operating Region

ON/OFF

Swithing

region

0.7mm

0.8mm

Total traval

3.5

±0.5

Bottom en

ON re

ion

OFF re

ion

Need to modify the above diagram according to new key travel.

2.1.4 Operating force

The operating curve is defined to the following drawing and the relationship

between the operating force and travel is provided. The operating force has a

tolerance of 60±25gf

4.2 Operating feeling

No definite stickiness or other abnormality shall be allowed when force is applied with a

finger to key-top center at the rate of 3 times on a second.

4.3 Using the Keyboard

Summary of content (5 pages)

PAGE 1
SCOPE This document provides a specification for the SEJIN AND OEM USB keyboard. 2 z z z z THE SEJIN Mini-keyboard with FSR MOUSE,SMART CARD Designed with the users in mind, it has a pleasant appearance and is Convenient to use. No extra power supply is required. It is compatible with the Microsoft Keyboard and Trackball, Smart card 3 Mini-keyboard with FSR MOUSE INSTALLATION z z Turn the power supply off to your computer.
PAGE 2
you can have access to all the key functions of a full-sized keyboard Using the Numeric Keypad Press NumLK key to turn on the embedded numeric key pad. The numeric functions of the key pad are Enabled and the NumLock LED turn on. To turn the numeric key pad off, press NumLK again The Num Lock LED turn off. 5 WORKMANSHIP STANDARDS 5.1 Electrical Criteria Electrical assemblies and components shall meet the requirements of commercial. 5.
PAGE 3
6.5 Chattering and bounce The operation force shall be applied according to the normal operating method at 5V DC, 5mA.There shall be no bounce and chattering within 10msec when it is measured using a specially prepared tester or a synchroscope. ※ Chattering and bounce are defined as following diagram : 7 ENVIRONMENTAL REQUIREMENTS The following specifications pertain to the keyboard assembly. 7.1 Operational ambient temperature and humidity Temperature : 0 ~ 50℃ Humidity : 85%RH 7.
PAGE 4
Standard: The keyboard operates normally after the test. 7.7 High Temperature Test Check Method: Leave for 96hours under +70℃. Standard: The keyboard operates normally after the test. 8 USB Keyboard interface The keyboard comprises the key switch section and signal processing circuit. The keyboard cable connects to the system with a USB connector. The following table shows the pin configuration and signal assignments.
PAGE 5
FCC NOTICE THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITION: (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDERSIRED OPERATION. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules.