GTCO CalComp BIT PAD TWO DATA, User Manual

Page 1: ...put Codes Bit Pad Two Packed Binary Format Bit Pad ASCII BCD Format Guidelines for Writing a Software Driver Operating Characteristics and Commands Section A Controlling the Report Flow and Content Pr...

Page 2: ...ity Power Section B Unpacking and Installation Unpacking Installation Changing the Stylus Refill Section C FCC Considerations Section D Care and Cleaning Section E Service Specifications Physical Desc...

Page 3: ...or or stylus data power cable and power supply Tablet Table like surface The tablet can tilt or lie flat Cursor Handheld device that s used with the tablet to locate points A cursor has a crosshair fo...

Page 4: ...t The host is represented by a computer The stylus or cursor position is expressed as an X Y coordinate pair One coordinate pair is called a report Reports can only be collected when the stylus or cur...

Page 5: ...ish Resolution is a measure of precision and is expressed in lines per inch lpi or lines per millimeter lpmm Counts of Resolution Unit of measure one count is the distance between two lines of resolut...

Page 6: ...or successful communication between a Bit Pad Two and its host the hardware interface and configuration parameters must be compatible The hardware interface is RS 232C The configuration parameters are...

Page 7: ...ontrol is disabled the data tablet only responds to the following commands Section C Baud Rate Baud rate is the number of bits transmitted each second between host and peripheral Bit Pad Two or periph...

Page 8: ...232C interface It is full duplex asynchronous and serial View the sections below for the pin assignments and signal levels Connector Pin Assignments The data power cable is a single shielded cable ter...

Page 9: ...ble Pin Assignments for the 25 Pin D Connector Signal Levels The table below specifies the signal levels for data transmissions RS 232C Signal Levels The source of the above tablet is the EIA Standard...

Page 10: ...he report format You can opt to have parity enabled or not If parity is enabled it can be even or odd Select the number of stop bits to be one or two You have two cursor output codes to choose from Th...

Page 11: ...and 1 when out of prox Flag bit identifying the stylus or cursor buttons being pressed The cursor output codes are switch selective On the 3 button cursor the buttons are distinguished by raised dimpl...

Page 12: ...mat is SXXX SYYY F CR or SXXX SYYYY F CR LF As shown in the above formats the terminator can be a carriage return CR or a carriage return and a line feed LF This is switch selective NOTE The character...

Page 13: ...order for the Bit Pad Two to be connected The driver is a software subroutine that collets and decodes Bit Pad Two reports for use by another master program This section provides some guidelines in t...

Page 14: ...Bit Pad Two 14 General Flowchart for Master Program to Read and Process Data Tablet Reports...

Page 15: ...Bit Pad Two 15 Detail A Get and Decode Reports Subroutine...

Page 16: ...Bit Pad Two 16 Detail B Data Input Subroutine...

Page 17: ...t the Bit Pad Two s operating characteristics or initiate the functions with commands from the host or with the switches inside the tablet The table below identifies the selector methods available Met...

Page 18: ...ad Two command buffer can hold ten bytes therefore up to ten bytes can be sent to the Bit Pad Two in quick succession Section A Controlling the Report Flow and Content Use the operating characteristic...

Page 19: ...etting two for the mode and three for the Report Rate Stream Mode Bit Pad Two continuously issues reports It is not necessary to press a cursor or stylus button NOTE To eliminate redundant reports fro...

Page 20: ...h as 2 rps or 70 rps are approximations The rate at which the data tablet actually sends reports depends on the baud rate and the report format The following tables identify the rates you can expect R...

Page 21: ...emote Request Mode the Bit Pad Two issues one report each time the host sends a trigger command Issue the mode command once Thereafter send only a trigger command for each report After Remote Request...

Page 22: ...the active area shrinks accordingly The following table specifies the maximum length of each active area s axis from the tablet origin for resolutions higher than 254 lpi Relative Mode Command Switch...

Page 23: ...g This relationship is quantified in the table below Increment Mode Command Switch Setting In Increment Mode the Bit Pad Two sends a report only when the cursor or stylus has traveled a minimum distan...

Page 24: ...maginary square Example Part A shows the imaginary square created around each report point the increment is five Part B shows the reports issued as the cursor or stylus travels across the tablet the i...

Page 25: ...et is in Stream Switch Stream or Point Mode together with Increment Mode and a button is pressed the last coordinate pair that satisfies the increment is reported When the data tablet is in Stream Mod...

Page 26: ...y switch rather than by command the Report Rate also set by switch is valid Consequently the Report Rate has priority over buttons or remote triggers Section C Other Commands Resolution Command Switch...

Page 27: ...sent from the Bit Pad Two to the host These commands control data flow regardless of the report mode Stop Transmission and Start Transmission are equivalents of the transmission protocols XOFF and XO...

Page 28: ...urn the operating characteristics to their current switch settings The factory set defaults are Report Mode Stream Coordinate System Absolute Report Rate 100 rps Increment 0 Resolution 200 lpi After a...

Page 29: ...rsor or stylus across the tablet s active area The output is easier to interpret if you have the report format set for ASCII BCD The X and Y values should increase as the cursor or stylus slides from...

Page 30: ...est command to perform tests on the tablet and cursor or stylus Self Test checks Analog circuitry Cursor or stylus connection operation and location Digital circuitry After the test is performed the r...

Page 31: ...e host is working properly 4 If possible issue each diagnostic command and review the results Chapter 6 Operating Environment Installation Care and Service Section A Operating Environment Temperature...

Page 32: ...ecord the damaged items on the freight bill 4 Write to the carrier state that the shipment was damaged when it was received and request an inspection 5 Keep the shipment in its original container unti...

Page 33: ...ing and installing a Bit Pad Two is as follows 1 Configure Bit Pad Two data tablet 2 Adjust the tilt or use flat 3 Attach stylus holder if applicable 4 Connect the stylus or cursor to the tablet 5 Att...

Page 34: ...Bit Pad Two 34...

Page 35: ...ard especially the microprocessor can be damaged or destroyed by electrostatic discharges This can be avoided by preventing static electricity from building up Have an antistatic floor covering under...

Page 36: ...aphite or ink on the switch This could cause the switch to malfunction 2 Adjust the Tilt or Use Flat Bit Pad Two can tilt or lie flat The tilt mounting is already attached to the back of the tablet wh...

Page 37: ...paper from the adhesive tape Attach the taped side to the back of the tablet 4 Connect the Stylus or Cursor to the Tablet The stylus or cursor plugs into a phone jack on the underside of the tablet Cu...

Page 38: ...ation lines Install an adapter cable between Bit Pad Two data power cable and the host 6 Connect the Tablet to the Power Source Plug the four pin connector of the pigtail cable into the power supply I...

Page 39: ...and water Never use a hydrocarbon cleaner such as acetone or an abrasive cloth These mar the tablet finish Section E Service For technical support and service contact your local GTCO CalComp by Turni...

Page 40: ...E C Universal power receptacle Japan 90V to 110V 42Hz to 62Hz NEMA 1 15P plug Material and Cosmetics Color Pearl white Finish Matte silk like Material Cycolac KJW flame retardant ABS plastic Operating...

Page 41: ...sor is rotated through 360 degrees Jitter Repeatability error of short duration caused by electrical noise Proximity Greatest distance above the drawing area that the pointing tool can be raised and s...

Page 42: ...Bit Pad Two 42 Appendix B ASCII Conversion Chart...

Page 43: ...Bit Pad Two 43...

Page 44: ...Bit Pad Two 44...

Page 45: ...xceptions regarding Bit Pad Two Does not require biasing pulling a magnet over the tablet Report formats binary and ASCII BCD include a bit or character identifying whether the stylus cursor is in or...

Page 46: ...Bit Pad Two 46 Switch Settings DIP Switch 1...

Page 47: ...Bit Pad Two 47 Switch Settings DIP Switch 3...

Page 48: ...ation contained in this document is subject to change without notice GTCO CalComp by Turning Technologies assumes no responsibility for technical or editorial errors or omissions that may appear in th...