1Ć1
This subsection begins with a general description of the traits of the
TDS 620A, 640A, & 644A Digitizing Oscilloscopes. Three subsections follow,
one for each of three classes of traits: nominal traits, warranted characterisĆ
tics, and typical characteristics.
The TDS 620A, 640A, & 644A are portable, fourĆchannel digitizing oscilloĆ
scopes suitable for use in a variety of test and measurement applications
and systems. Key features include:
H A maximum digitizing rate of 2 GS/s on each of the fullĆfeatured chanĆ
nels (four on the TDS 640A and 644A, two on the TDS 620A) simultaĆ
neously with an analog bandwidth of 500 MHz.
H Four input channels, each with 8Ćbit vertical resolution, and each with a
record length of 2,000 samples and 8Ćbit vertical resolution.
H Extensive triggering capabilities: such as edge, logic, and glitch. Video
trigger (Option 05) is also available. The video trigger modes are NTSC,
SECAM, PAL, HDTV, and FlexFormat
TM
(user definable format).
H Acquisition modes such as sample, envelope, and average.
H A full complement of advanced functions, like continuouslyĆupdated
measurements, results and local pass/fail decision making.
H Specialized display modes, such as variable persistence with color
grading, dot or vector mode, sin(x)/x or linear display filters, and user
selectable color pallettes. The Fit to Screen" features compresses the
entire waveform record to fit on the screen.
H A unique graphical user interface (GUI), an onĆboard help mode, and a
logical frontĆpanel layout which combine to deliver a new standard in
usability.
H Full GPIB software programmability. Hardcopy output using GPIB,
RSĆ232, or Centronics ports. RSĆ232 and Centronics are standard on
the TDS 644A and optional, as option 13, on the TDS 620A and 640A.
H VGA output for driving remote monitors.
H A 1.44 Mbyte, DOS 3.3 or laterĆcompatible, floppy disk drive (option 1F
on the TDS 620A and 640A) and NVRAM mass storage for saving
waveforms, hardcopies, and oscilloscope setups.
H On the TDS 644A, a color display for distinguishing among waveforms,
their measurements, and associated text.
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