# GRASS Help System

Geographics Digitizer Information

Documentation on cabling configuration needed for geographics. There is also a diagnostics program under $GISBASE/src/mapdev/digitizers/geograph/Diagnostics.

Cabling set-up for Geographics digitizer. RS232 pins needed: 2, 3, 7. all straight through.

Pin Meaning

    	---		-------

2 Transmit data
3 Receive data
7 Signal ground

6 Data set ready
8 Received line signal detector
20 Data terminal ready

************************************************************************* * For MASSCOMPs only. Others may vary. * Besides having pins 2, 3, and 7 straight through: * * The newer, slimmer, smaller serial box has to also have 6, 8, and 20 * looped back in the cable or on the masscomp end. * * The old very large serial box has 8, and 20 straight through. * *************************************************************************

The /etc/inittab file must have the getty off for the digitizer port (tty).

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Automatically created on: Mon Mar 6 12:34:40 2006