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TDS 684B Front

The Tektronix TDS684 is a 1 GHz, 5 GS/s quad-channel digital storage scope.

The TDS684A was introduced in 1995, the TDS684B in 1996, and TDS684C in 1998-1999 (?)




  • 5 GS/s on each channel simultaneously
  • Analog bandwidth : 1 mV/div: 500 MHz, 2 mV/div: 600 MHz, 5 mV/div: 750 MHz, >= 10 mV/div: 1 GHz
  • 4 Channels, 8-bit resolution
  • Record lengths : 15k samples per channel
  • Modes : sample, envelope, average


  • Display : color; Zoom
  • Trigger modes Include: edge, logic, and pulse. Video trigger, with option 05 (NTSC, SECAM, PAL, HDTV, and FlexFormat�)
  • Storage 1.44 Mbyte, 3.5 inch, DOS 3.3-or-later floppy disk. NVRAM storage for saving waveforms, hardcopies, and setups
  • I/O Full GPIB programmability.
  • Hardcopy output using GPIB, RS-232, or Centronics ports