This is about the Motorola R2000 series of test equipment from the earl/mid 1980's.

The 2001D was first offered in 1984/85 as the following options:

Model	Description
R-2001D	Basic Model
R-2001D/HS	Basic Model with 10MHz OCXO
R-2002D/HS	IEEE 488 (GPIB/HPIB) and 10MHz OCXO
R-2008D/HS	Cellular (AMPS) Option and 10MHz OCXO
R-2009D/HS	Cellular (AMPS) Option, IEEE 488 (GPIB/HPIB) and, 10MHz OCXO

At some later date (1986?) the other options were introduced:

Model	Description
R-2001D	Basic Model
R-2001D/HS	With high stability oscillator
R-2002D	With IEEE·488 option
R-2002D/HS	High stability oscillator and IEEE·4BB Bus option
R-2004D	With Motorola DES option
R-2004D/HS	High stability oscillator and Motorola DES option
R-2005D	With Motorola SECURENET option
R-2005D/HS	High stability oscillator and Motorola SECURENET option
R-2008D	With cellular option
R-2008D/HS	High stability oscillator and cellular option
R-2009D	With IEEE·4BB Bus and cellular options
R-2009D/HS	With high stability oscillator, IEEE-48B Bus and cellular option
R-2010D	With UK cellular option
R-2010D/HS	High stability oscillator and UK cellular option
R-2011D	With IEEE-488 Bus and UK cellular option
R-2011D/HS	High stability oscillator, IEEE·488 Bus, and UK cellular option
R-2021D	With Motorola Trunked Radio option
R-2021D/HS	High stability oscillator and Motorola Trunked Radio option
R-2045D	With Motorola DES and SECURENET options
R-2045D/HS	High stability oscillator and Motorola's DES and SECURENET options

Documentation

There's a bunch of manual all over the net, some I've scanned, others from other people. Some scans are better than others, I've OCR'd and cleaned up what I've found to the best of my abilities.

Media:R2001A-R2002A Service Manual 68P81069A84-0 1980-05-30 Bad Scan.pdf -