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   15.9 Keytop pulling strength 

The keytop pull out force shall be 0.5Kg or more at normal temperature during initial conditions.   
The keytop shall be not pulled out by an ordinary typing operations. 

 
 
 

Summary of Contents for SKR-2006

Page 1: ...1 User s Manual SKR 2006 Sejin Electron Inc ...

Page 2: ... may cause harmful interference to radio communication However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or...

Page 3: ...m the keyboard 3 1 3 The data line is used for transmission of data by both the system and the keyboard The system issues a Request to Send RTS by pulling the data line to logic 0 3 2 DATA format 3 2 1 The data protocol is an 11 bit data stream that consists of 1 start bit always Logic 0 8 data bits least significant bit to most significant bit respectively 1 odd parity bit and 1 stop bit always L...

Page 4: ...essed before the system allows keyboard output the additional data lost 4 3 Special Cases 4 3 1 When the keyboard is allowed send data the bytes in the buffer will be sent as in normal operation and new data entered is detected and sent Response codes do not occupy a buffer position 4 3 2 If keystrokes generate a multiple byte sequence the entire sequence must fit into the available buffer space o...

Page 5: ...lowing tests 12 1 Operating 12 1 1 The keyboard will be capable of withstanding 10 to 40 degrees C with a 40 degree C maximum wet bulb temperature 20 to 95 max relative humidity non condensing cycled for 10 days 12 2 Storage 12 2 1 The keyboard will be capable of withstanding a temperature of 20 degrees C to 60 degrees C with a 48 degree C maximum wet bulb temperature 90 max humidity non condensin...

Page 6: ...s of cycling 56 Hz to 500 Hz at 2 0G s in each of its three major axis 11 0 ELECTROSTATICS DISCHARGE ESD 11 1 Test Method 15 1 1 Test per IEC 801 2 15 1 2 Direct Discharge applied to all areas which may be touched by an operator with the keyboard in it s normal operating position 11 2 Field Limits 11 2 1 E Field 0 to 12KV 11 2 2 H Field 0 to 12KV 11 2 3 Direct Discharge 0 to 12 KV 11 3 Keyboard Op...

Page 7: ...f silver carbon and UV dielectric compounds 15 2 Contact resistance 20 2 1 Closed circuit resistance 300Ω max 20 2 2 Open circuit resistance 100 min 15 4 Insulation Resistance 19 4 1 measured between any two adjacent sense or drive line 100 minimum with 100 VDC test voltage 15 5 Key top Height Variation The key top height variation must not greater than 0 5mm when measured between the center to ce...

Page 8: ...8 15 9 Keytop pulling strength The keytop pull out force shall be 0 5Kg or more at normal temperature during initial conditions The keytop shall be not pulled out by an ordinary typing operations ...

Page 9: ...9 ...

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