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GTCO CalComp CR-1212 User Manual

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Chapter 1
Chapter 2
Chapter 3
Chapter 4
CR 1212 1
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Summary of Contents for GTCO CalComp CR-1212

  • Page 1: Table Of Contents

    CR 1212 1 Chapter 1 What is the CR 1212 and How Does It Work? Section A: What is the CR 1212? Section B: How the CR 1212 Works Section C: Commands: Controlling the Tablet’s Operation Section D: Alternative Configurations Chapter 2 Assembly and Installation Chapter 3...
  • Page 2 CR 1212 2 Tablet Beep Transmission Control Section D: Reserved Commands Chapter 5 Guidelines for Writing a Device Driver Chapter 6 Using the CR 1212 Chapter 7 Checking the Graphics Tablet Section A: Tablet Calibration Section B: Power (and Proximity) Light Section C: A Quick Functional Check Section D: Diagnostic Functions Echo...

  • Page 3: Chapter 1: What Is The Cr 1212 And How Does It Work

    CR 1212 3 Chapter 1: What is the CR 1212 and How Does It Work? Section A: What is the CR 1212? CR 1212 is a graphics tablet that acts as an input device. It allows for the translation of graphic information into digital, suitable for a digital device such as a computer.

  • Page 4: Section B: How The Cr 1212 Works

    CR 1212 4 Section B: How the CR 1212 Works CR 1212 translates the stylus/cursor position on the tablet into digital information and communicates it to the host. The stylus/cursor position is expressed as an X, Y coordinate pair. One coordinate pair is a report. Valid reports can only be collected when the stylus/cursor is in the tablet’s active area and in proximity: Active area is a 12-inch square area inside the groove on the tablet surface.
  • Page 5 CR 1212 5 As previously stated, reports are measured in counts of resolution. As shown below, each square is one count of resolution. The tablet reports the same coordinates for any point within the square. With different resolution settings, you can receive different reports for the same tablet location.

  • Page 6: Section C: Commands: Controlling The Tablet's Operation

    CR 1212 6 Reports are in absolute or relative coordinates. Absolute coordinates are coordinates measured from the tablet’s origin (0, 0). Relative coordinates are measured relative to the last report location. In the illustration above, point B is issued after point A. Therefore, in relative coordinates, point B is measured relative to point A.

  • Page 7: Chapter 2: Assembly And Installation

    CR 1212 7 Chapter 2: Assembly and Installation The CR 1212 package should include the following: Tablet Interface cable   Stylus or cursor CR 1212 Graphics Tablet User’s Guide   To assemble and install CR 1212: 1. Connect the stylus/cursor to the tablet. 2.
  • Page 8 CR 1212 8 The cursor and stylus are interchangeable. However, before changing from one to the other, turn off the tablet. (This allows the tablet’s internal software to re-initialize for each device.) 2. Plug the 8-pin phone connector on the interface cable into the tablet. 3.
  • Page 9 CR 1212 9 4. Plug the power supply barrel connector into the interface cable’s D connector. 5. Plug the power supply into a grounded electrical outlet. Use only a CR 1212 power supply. Substituting a different power supply could permanently damage the graphics tablet.

  • Page 10: Chapter 3: Interfacing With The Host

    The computer must have an RS-232C communications port terminated with a 25-pin male D connector that is configured as DTE (Data Terminal Equipment). NOTE: If the computer has a different connector, contact your GTCO CalComp by Turning Technologies representative for information about adapter cables.

  • Page 11: Section B: Baud Rate

    CR 1212 11 RS-232C Signal Levels NOTE: The source is the EIA Standard RS-232C: Interface between Data Terminal Equipment and Data Communication Equipment Employing Serial Binary Data Interchange, by the Engineering Department of the Electronics Industries Association (Washington, D.C.: EIA, 1969). Section B: Baud Rate The CR 1212 is available with 9600 baud or Autobaud.

  • Page 12: Section D: Report Formats

    CR 1212 12 Section D: Report Formats The CR 1212 has one of the following report formats: Bit Pad One-compatible format (default)  Bit Pad Two-compatible format  CR format (similar to MM packed binary format)  Bit Pad One- or Two-compatible format for Relative Coordinates (Delta Mode) ...
  • Page 13 CR 1212 13 Bit Pad Two-Compatible Report Format CR Report Format...
  • Page 14 CR 1212 14 Bit Pad One- or Two-compatible format for Relative Coordinates CR Format for Relative Coordinates Key: LSB is the least significant bit. MSB is the most significant bit.  Fa, Fb, Fc and Fd are the flag bits. They identify the status of the stylus tip and ...
  • Page 15 CR 1212 15 *Output for Bit Pad One or Two configurations using absolute coordinates. **Output for Bit Pad One or Two configurations using relative coordinates. Sx and Sy are the X and Y coordinate signs. 1 is positive and 0 is negative. ...

  • Page 16: Chapter 4: Operating Characteristics And Functions

    CR 1212 16 Chapter 4: Operating Characteristics and Functions The CR 1212 includes a variety of operating characteristics and functions that can be controlled with commands from the host. For example, define: Report flow  Tablet resolution  Tablet origin location ...

  • Page 17: Point Mode

    CR 1212 17 A report issued when the stylus/cursor is out-of-prox is always the last in-prox scanned report. Because the last scanned report may or may not be the last issued report, their values could be different. You may find this occurring when collecting reports at very slow rates.

  • Page 18: Stream Mode

    CR 1212 18 Stream Mode In Stream Mode, the graphics tablet issues reports continuously, whether a stylus/cursor button is pressed or not. The Report Rate, described below, controls the number of reports issued per second. When moving the stylus/cursor out-of-prox, the tablet issues the last in-prox scanned report three or four times before it stops transmitting.

  • Page 19: Report Rate

    CR 1212 19 Report Rate The Report Rate function is an adjunct to Stream and Switch Stream modes. Use Report Rate to define the number of reports the tablet issues each second. Each time the tablet is turned on or issues a Reset command, the report rate defaults to 110 or 72 rps, depending on the hardware configuration.
  • Page 20 CR 1212 20 NOTE: When using Increment Mode, it’s recommended to use a resolution setting of 50 lpi or higher. How Increment Mode Works The last report issued becomes the center of an imaginary square. The square’s sides measure twice the increment value. The stylus/cursor can move anywhere inside the imaginary square without the tablet issuing a report.
  • Page 21 CR 1212 21 The points issued are: How to Use Increment Mode Send the mode command and then the increment value. The increment value is in counts (of resolution) and can be a decimal whole number from 0 to 90. (The default is zero.) Add 32 (decimal), a required offset, to the desired increment and then convert the sum into your preferred number base.

  • Page 22: Section B: Setting The Resolution

    CR 1212 22 Combining Increment Mode with Other Modes Point Mode and Increment Mode: The stylus/cursor location, at the time Increment  Mode is enabled, becomes the center of the initial imaginary square. The tablet issues one report when pressing a stylus/cursor button and another when releasing the button.

  • Page 23: Resolution, Predefined

    CR 1212 23 Bit Pad One and Two Configurations: The tablet can have a resolution of up to 508 lpi (6096 counts over a 12-inch axis). Bit Pad configurations are restricted to a maximum of 4095 counts. This, in effect, restricts the resolution to 341 lpi (13 lpmm) over a 12-inch axis. (4095 lpi + 12 inches = 341 lpi) Higher resolutions can be used;...

  • Page 24: Resolution, Definable (Set X, Y Scale)

    CR 1212 24 Use these commands to set the tablet to one of the predefined resolutions listed about. (Resolution is restricted in Bit Pad One and Two configurations. Refer to Section B: Setting the Resolution. Resolution, Definable (Set X, Y Scale) Command Sequence: <command><X low byte><X high byte><Y low byte><Y high byte>...
  • Page 25 CR 1212 25 37 lpi x 12 inches = 444 … is the desired axis resolution The other device may have a resolution expressed as the overall axis values,  such as 800 by 1024 pixels. In this case, ensure the length of the corresponding tablet axis divides evenly into the other device’s resolution.
  • Page 26 CR 1212 26 67 x 12 inches = 804 … is the desired X axis resolution 86 x 12 inches = 1032 … is the desired Y axis resolution 2. Convert the desired axis resolution to a hexadecimal number. Example: 804 decimal = 324 hexadecimal 1032 decimal = 408 hexadecimal If the number is less from four digits, pack the left side with zeros.

  • Page 27: Section C: Other Functions

    CR 1212 27 Section C: Other Functions Bit Pad Configuration If the unit’s hardware configuration is Bit Pad, you can adjust between Bit Pad One and Bit Pad Two using the commands. (Changing to or from the CR configuration requires a hardware modification.) Once the configuration is revised;...

  • Page 28: Relative Coordinates (Delta Mode)

    CR 1212 28 Relative Coordinates (Delta Mode) The tablet defaults to an absolute coordinate system. This command changes it to a relative coordinate system. Absolute coordinates are measured from the tablet’s origin (0, 0). Relative coordinates are measured relative to the last report location. (Refer to Chapter 1 for details.) In this operational mode, the active area origin is the lower left corner of the tablet.

  • Page 29: Send Configuration

    CR 1212 29 Send Configuration Send Configuration issues a report to the host that identifies the resolution of each axis. The report format is one of the following: Bit Pad One or Bit Pad Two Configuration – Report Format CR Configuration – Report Format...

  • Page 30: Tablet Beep

    CR 1212 30 Key: Least significant bit Most significant bit Maximum X or Y value at set resolution The configuration report does not express the resolution in lines per inch or lines per millimeter. Rather, the resolution is indicated as the total number of counts over the length of the axis.

  • Page 31: Transmission Control

    CR 1212 31 Transmission Control The Stop Transmission and Resume Transmission commands act as software gates, controlling data transmission from the CR 1212 to the host. These commands control the data flow, regardless of the report collection mode (stream, Point, etc.). Stop Transmission and Resume Transmission are equivalents of the transmission protocols XOFF and XON.

  • Page 32: Guidelines For Writing A Device Driver

    CR 1212 32 Chapter 5: Guidelines for Writing a Device Driver For the computer to make use of the data being sent to it from the tablet, the software (system or application) must contain a tablet device driver. The driver needs to be written for your specific CR 1212 configuration (Bit Pad One, Bit Pad Two or CR).
  • Page 33 CR 1212 33 The following flowcharts are for a CR 1212 in the Bit Pad One configuration. Configure Host and Tablet Structure the host communications port (port address, baud rate, etc.)  Shape the tablet (resolution, report mode, etc.) ...
  • Page 34 CR 1212 34 Report Collection – Interrupt Routines Assemble the report: collect the report’s data bytes into an array  Check for errors ...
  • Page 35 CR 1212 35 Cont.
  • Page 36 CR 1212 36 Process Reports from the Tablet Decode the report  Filter reports, if required by the application  Notify the application, if applicable, that a report is ready to be issued to the  application...

  • Page 37: Using The Cr 1212

    CR 1212 37 Chapter 6: Using the CR 1212 Follow these guidelines to maximize usage of the CR 1212. You can tape things down to the tablet, including pictures and drawings. Tape does  not affect the tablet. You can even stack materials up to ½ inch high between the tablet and stylus/cursor.
  • Page 38 CR 1212 38 Cursor is most accurate when held parallel with the tablet surface. To activate a  cursor button, press it. The tablet beeps each time the stylus/cursor button is pressed.  Remember to release the pressure on the stylus/cursor button when you’re done ...

  • Page 39: Checking The Graphics Tablet

    CR 1212 39 Chapter 7: Checking the Graphics Tablet Section A: Tablet Calibration The tablet calibrates each time it’s turned on. The calibration takes less than three seconds and beeps once completed. Section B: Power (and Proximity) Light The power light on the tablet serves two purposes. First, it notifies when the tablet is on and receiving power.
  • Page 40 CR 1212 40 The X and Y coordinates should increase as you slide the stylus/cursor up and right, as shown below.

  • Page 41: Section D: Diagnostic Functions

    CR 1212 41 Section D: Diagnostic Functions Echo Use Echo to ensure that the interface between the tablet and host is operating correctly. The tablet echoes (retransmits) characters back to the host that were sent from the host. The tablet echoes the characters, one by one, as it receives them. If the interface is working properly, the sent character matches the echoed character.
  • Page 42 CR 1212 42 CR Configuration: Self-Test Report Analog circuitry test; pass = 1, fail = 0 Digital circuitry test; pass = 1, fail = 0 Stylus/cursor proximity; stylus/cursor in-prox = 1, stylus/cursor out-of-prox = 0 Tablet calibration; pass = 1, fail = 0 Total test result (based on A, D and CA);...

  • Page 43: Operating Environment, Care And Service

    Turn off the computer and tablet. Then turn them on again.  If the tablet continues to malfunction, contact our Customer Service Department at: GTCO CalComp by Turning Technologies 14557 N. 82 Street Scottsdale, AZ 85260 Toll-Free Number: 1.866.746.3015...

  • Page 44: Section C: Care And Cleaning

    Customer Service will give you a Return Authorization Number. Write this number on the outside of the package and on all accompanying paperwork. NOTE: Please do not ship equipment to GTCO CalComp by Turning Technologies without obtaining instructions and a Return Authorization Number from the Customer Service Department.

  • Page 45: Section D: Changing The Stylus Refill

    CR 1212 45 Section D: Changing the Stylus Refill To change the stylus refill, grasp the refill by the tip and pull straight out. Since the tip is small and slippery, you will probably not be able to pull it out with your bare fingers. We recommend using needle nose pliers or two coins.

  • Page 46: Appendix A Specifications

    CR 1212 46 Appendix A Specifications Physical Description Approximate physical dimensions: Width 16 inches (406 mm) Length 17 inches (432 mm) Maximum Height 1.3 inches (33 mm) Weight 7 lbs. (3.2 kg) maximum Power Supply Specifications The CR 1212 power supply for the RS-232C configuration is specified as: Input: 120 VAC +7%, -13%, 58 to 62 Hz ...

  • Page 47: Appendix Bascii Conversion Chart

    CR 1212 47 Appendix B ASCII Conversion Chart...
  • Page 48 CR 1212 48...
  • Page 49 CR 1212 49...
  • Page 50 Turning Technologies assumes no responsibility for technical, or editorial errors, or omissions that may appear in this document, or for the use of this material. Nor does GTCO CalComp by Turning Technologies make any commitment to update the information contained in this document. This document contains proprietary information which is protected by copyright.

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