2000: was available 1993-1997
3000: was available 1997-2003
2000: used the same GSR connector plug the same as analog models
3000: used a larger GSR connector plug than analog models (like newer 4000 does)
2000: connected to computer by a SCSI cable
3000: connected to computer by a serial cable
2000: a large black box; 5 channels
3000: a small gold box; 5 channels
2000: had a 160-page User Manual
3000: used the 2000’s User Manual
Neither had video capabilities.
Replaced by the 7-channel USB-model 4000 in 2002.
NOTE:
there was no ‘LX-1000’ model; LX-2000 was their first computerized model
--from www.PolygraphAcademy.com