Tektronix TDS754C Upgraded to TDS784C Oscilloscope 1GHz 4GSa/s GPIB 13 1F 2F 2C

Passes self test. Passes SPC.

13 - Add RS-232C and Centronics hardcopy interfaces

1F - Floppy disc drive

2F - Extended waveform math: FFT, integration and differentiation

2C - Communication Signal Analyzer; includes comm triggers and communication mask testing.

After running the self tests and SPC, no additional errors appear in the error log.

CH4 shown @ 1Gz is the worst of the 4 channels. (Other 3 channels perform a bit better). This scope will pass a calibration for a TDS784C, however it has not been formally calibrated by an accredited lab as a TDS784C since the upgrade.
The are a few text labels on the exterior that say "TDS754C".  These labels will remain as they are pictured.

Probes, cables, power cord and function generator are not included.
There are scuffs, scratches, sticker residue and worn spots.
All buttons and knobs work. Floppy works. GPIB works.
May need calibration.
May ship via Fedex.