Beefchicken Industries

Trimble 4000 GPS Receiver Resources

Receiver Generations

There were three notable generations of the Trimble 4000 series receivers.

1984: First Generation: Rack Mount

Models: 4000A (1984), 4000AX, 4000S, 4000SX, 4000SXD, 4000SL, 4000SLD (1988)

The first generation was represented by the 4000A. Contained in a 19" rackmount enclosure, they were not exceedingly portable. Trimble stuffed them in plastic carrying cases and called them "portable"

19xx: Second Generation: Yellow Metal Box

Models: 4000ST, 4000SST, 4000STD, 4000RL, 4000DL

Architecture: Motorola MC68HC000 CPU

1994: Third Generation: Plastic Box

Models: 4000SE, 4000SSE (1994), 4000Si, 4000SSi, 4000RS, 4000DS, 4000RL2, 4000DL2

Architecture: Motorola MC68332 SoC, Texas Instruments TMS320C25 DSP, S87C552 (Display/keypad controller?)