Model 364 User Manual
Contents
1. NOTE The Unique Micro Design Model 364 Keyboard Wedge as standard is configured for AT and PS 2 or equivalent keyboard scan codes To operate with XT or other computers factory firmware options are available Advanced Thinking Products Model 364 User Manual 1 3 Description There is one full duplex serial port on the Keyboard Wedge a set of four switches numbered one to four and two 5 pin DIN connectors for connecting to standard PC s and keyboards il E ME vone Model 364 Keyboard Wedge Advanced Thinking Products AE AAS DMD Esk DESIGN Upon receiving a character on its serial interface the Keyboard Wedge monitors the keyboard input and output ports for activity If the keyboard and PC are in communication the Keyboard Wedge will wait for inactivity before sending its data Inactivity is monitored for approximately 1 millisecond COMPUTER Q o lt O m gt Ww x ASCII characters received are converted to the equivalent AT or PS 2 key scan codes Whilst in control the keyboard port is disconnected from the computer port Model 364 User Manual Advanced Thinking Products 2 Installation 1 Turn off the computer 2 Disconnect the keyboard from the PC system unit 3 Connect the PC s keyboard interface to the computer interface of the Keyboard Wedge Use a CA202 cable for computers with 5 pin DIN connectors or a CA226 cable for PS 2 compatible c2. is off Advanced Thinking Products Model 364 User Manual Switch Setting Normal Mode Caps Lock Sense Mode Switch 2 Caps Lock Sense selection Model 364 User Manual Advanced Thinking Products 4 Interfaces 4 1 Serial port The serial port is a full duplex RS232 interface that uses 9 volt levels Five volt DC power is provided on the interface to allow bar code scanners to be powered Communications parameters are fixed at 9600 baud 8 data bits with no parity and one stop bit with hardware handshaking no connection RxD TxD DTR ms Ground no connection 5V RTS asserted CTS no connection CO MI GD OT amp GI NO Fe Serial interface DB9 plug connector Ve Front view of DB9 Plug Advanced Thinking Products Model 364 User Manual 4 2 Wedge interfaces The computer interface of the Keyboard Wedge is used to communicate with and derive power from the PC s keyboard interface Standard PC keyboards connect to the keyboard interface of the Keyboard Wedge Pin 1 0 Description 1 i o Clock 2 i o Data 3 Reset 4 Ground 5 5V DC 10 Computer and Keyboard interfaces 5 Pin 180 degree DIN socket Front view of 5 Pin Din socket Model 364 User Manual Advanced Thinking Products 11 Advanced Thinking Products Model 364 User Manual YT fs a DE sien UNIQUE MICRO DESIGN PTY LTD ACN 007 419
3. 490 16 Nyadale Drive Scoresby VIC 3179 Australia Tel 61 3 9764 8166 Fax 61 3 9764 8177 12
4. Unique Micro Design Advanced Thinking Products Model 364 Keyboard Wedge User Manual Document Reference DOC M364 UM UMD Part Number 6 0364 993 6 Issue 5 Revision 7 7 94 Advanced Thinking Products Model 364 User Manual Revision History 4 02 93 28 04 93 10 11 93 7 01 94 7107 94 First Release Error in Switch 3 4 Settings fixed New format Keyboard Connector drawing corrected Part No Corrected Note on XT operation Pg3 Note on Blocking Pg6 Model 364 User Manual Advanced Thinking Products 1 Introduction 1 1 Scope This manual provides installation and configuration details for the Unique Micro Design Model 364 Keyboard Wedge 1 2 Overview The Unique Micro Design Model 364 Keyboard Wedge provides a serial port which connects in between the keyboard of a AT or PS 2 style personal computer and the system unit The Keyboard Wedge converts asynchronous serial RS 232 data to appropriate keyboard characters It is totally transparent to the computer system which accepts the serial input as if it was typed from the keyboard The Keyboard Wedge finds utility in adding serial devices such as bar code scanners to a PC system without the need to alter software Whenever the program expects keyboard input it can accept data from the attached serial device This manual describes the Keyboard Wedge operating with the standard firmware Other firmware options can be provided to suit specific applications
5. omputers with 6 pin mini DIN connectors 4 Plug the keyboard directly into the keyboard interface of the Keyboard Wedge If it is a PS 2 compatible keyboard with a 6 pin male mini DIN connector then a CA227 adapter is required 5 Set the switches according to the mode of operation required see the next section 6 Connect the serial device via a suitable cable to the serial port of the Keyboard Wedge and turn on the computer 7 Configure the serial device s communications parameters to 9600 baud 8 data bits with no parity and one stop bit 8 The computer should now operate as usual and characters received on the serial interface of Keyboard Wedge will be typed into the computer Advanced Thinking Products Model 364 User Manual 3 Configuration 3 1 Intercharacter delay The intercharacter delay setting determines the delay period between characters For some situations it might be necessary to use the slow rate Switch Setting Fast rate approximately 1 mS Slow rate approximately 20 mS 3 2 Blocking modes Input received on serial interface may be blocked Here input is buffered until a terminator character is received which in the standard firmware option is the carriage return lt CR gt control character ie hexadecimal OD decimal 13 Once the terminating character is received the buffered characters excluding the terminating character is output followed by the optional postamble string The p
6. ostamble string is factory set to lt CR gt or lt CR gt lt CR gt see Blocking Selection and can be changed upon request Model 364 User Manual Advanced Thinking Products Switch Setting 3 4 OFF OFF OFF ON blocking with no post amble ON OFF blocking with lt CR gt post amble ON ON blocking with lt CR gt lt CR gt post amble where lt CR gt equals Hexadecimal 0D Decimal 13 Switches 3 amp 4 Blocking Selection 3 3 Caps Lock Sense In the Normal Mode of operation the keyboard wedge processes data in the following way a When serial data is uppercase alpha characters the wedge will press the Left shift key and type the corresponding lowercase characters to the computer If Caps Lock is off then the computer registers uppercase and if Caps Lock is on then the computer registers lowercase b When the serial data is lowercase alpha characters the wedge will type the lowercase characters to the computer If Caps Lock is off then the computer registers lowercase and if Caps Lock is on then the computer registers uppercase In Caps Lock Sense Mode the keyboard wedge attempts to track the state of the Caps Lock and will type characters to the computer in the appropriate case Le Uppercase characters will be typed as uppercase if the Caps Lock is on and typed as lowercase if Caps Lock is off and lowercase characters will be typed as uppercase if the Caps Lock is on and typed as lowercase if Caps Lock
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