GTCO MM II 1201 - Users Guide - Manual (Page 43)

MM II 43
Chapter 7: Checking the Graphics Tablet
Section A: Power (and Proximity) Light
The power light on the tablet serves two purposes. First, it notifies when the tablet is on
and receiving power. Second, it is a proximity indicator. The light remains lit when the
stylus/cursor is in-prox. It blinks when the stylus/cursor is out-of-prox. If the light blinks
when the stylus/cursor is in-prox, then the tablet is malfunctioning. Turn it off for an
estimated 10-20 seconds and then turn it back on.
Section B: A Quick Functional Check
Here is a quick functional check that you can perform. Its purpose is to ensure that the
interface is working and that all parts of the tablet active area are being read by the
stylus/cursor.
1. Connect the tablet to a “dumb” terminal. The terminal must be set up to
communicate in full duplex at 9600 baud. If the unit is a Bit Pad One or Two
configurations, the terminal’s data protocol must be a 9-bit frame: odd parity and
eight data bits.
2. On the terminal, enter the command string: zA@. The tablet is now in Stream Mode
sending reports in an ASCII format.
3. Starting at the lower left corner of the tablet, run the stylus/cursor across the
tablet’s active area. You should see reports on the terminal in the following ASCII
format: XXXX, YYYY, F. XXXX, YYYY are the X and Y coordinates. F is the stylus/cursor
flag: