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TDS 684A, TDS 744A, & TDS 784A Service Manual
1–1
Specifications
This section begins with a general description of the traits of the TDS 684A and
7XXA Digitizing Oscilloscopes. Three sections follow, one for each of three
classes of traits: nominal traits, warranted characteristics, and typical character-
istics.
Product Description
The TDS 684A and 7XXA Digitizing Oscilloscopes are portable, four-channel
instruments suitable for use in a variety of test and measurement applications and
systems. Table 1–1 lists key features.
Table 1–1: Key Features of the TDS 684A and 7XXA Oscilloscopes
Feature TDS 684A TDS 7XXA
Digitizing rate, maximum 5 GS/s on each channel
simultaneously
TDS 744A: 2 GS/s
TDS 784A: 4 GS/s
Analog bandwidth 1 GHz TDS 744A: 500 MHz
TDS 784A: 1 GHz
Channels Four, each with 8-bit resolution
Record lengths, maximum 15,000 samples 50,000 samples
(500,000 with option 1M)
Acquisition modes Sample, envelope, and
average
Sample, envelope, average,
high-resolution, and
peak-detect
Trigger modes Include: edge, logic, and pulse.
Video trigger, with option 05, modes include:
NTSC, SECAM, PAL, HDTV, and FlexFormat.
Display Color for distinguishing among waveforms, measurements, and
associated text
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