Atec TDS500D, TDS700D User Manual

The TDS 500D/TDS 700D Family
of Digital Phosphor
Oscilloscopes

The TDS 500D/700D oscillo­scopes are the first in the
TDS family of Digital Phos­phor Oscilloscopes (DPOs)
designed to keep pace with
current and evolving needs in
advanced electronic design
and debug. DPOs deliver a
new level of insight that
makes dealing with complex
signals elementary – a new
level of insight that must be
seen to be believed.

DPOs capture, store, display,
and analyze, in real-time,
three dimensions of signal
information: amplitude, time,
and distribution of amplitude
over time. The benefit of this
new third dimension of infor­mation is an interpretation of
the signal dynamics, includ­ing instantaneous changes
and the frequency of occur­rence displayed in the form
of quantitative intensity
information.

EASY TO LEARN AND EASY TO USE

Extensive user interface
design has made the TDS
family of products truly intu­itive to operate. Each family
member shares a familiar
front panel layout with dedi­cated vertical, horizontal, and
trigger controls. A graphical
user interface with over 200
icons helps facilitate under­standing and use of the
advanced features. A color
monitor helps rapidly distin­guish between multiple
waveforms and measure­ments. On-line help provides
a convenient built-in refer­ence manual.

Copyright © 1998 Tektronix, Inc. All rights reserved.

FEATURES

2 GHz, 1 GHz, and 500 MHz
Bandwidths

Sample Rates to 4 GS/s
DPO Display Density of up to 100M

points/sec
2 or 4 Channels
1% Vertical Accuracy
8-Bit Vertical Resolution, over 11-Bits

with Averaging, and Over 13-Bits
with Hi-res

1 ns Peak Detect
1 mV to 10 V/div Sensitivity
Up to 1 GHz Differential

Measurements
Channel Deskew
Record Lengths to 8M Points
Floppy Disk Storage
Iomega Zip

™

Drive Compatible
Advanced Triggering
29 Automatic Measurements and

Measurement Statistics
FFT and Advanced Math
Histograms on DPO and Normal

Waveform Acquisitions
Histogram Statistics
Limit Test
FastFrame

™

Time Stamp

Communication Signal Analysis
Including Mask Testing and
SONET/SDH and Fibre Channel
Optical Reference Receivers

Full GPIB Programmability
3 Year Warranty
CE Marking

Digital Phosphor Oscilloscopes
TDS 500D and
TDS 700D Series

HIGH FIDELITY SIGNAL
ACQUISITION

The high waveform capture
rate of the TDS 500D/700D
DPO series, together with its
high bandwidth and sample
rate, delivers instantaneous
signal feedback to show the
true signals that other scopes
may be missing. The DPO
acquisition acquires up to
1000 times more data than
typical DSOs, allowing the
capture of complex signals,
reducing debugging times
from hours to seconds.

Channels can be transpar­ently combined to achieve
higher sample rates and
longer record lengths. The
record length can be option­ally increased to 8M points,
providing a high-resolution
representation of the signal
over a long period of time.

All of the TDS products pro­vide wide dynamic range, flat
response, fast overdrive
recovery, calibrated DC offset,
1 mV/div sensitivity
(10 mV/div maximum sensi­tivity on TDS 794D),
1 ns peak detect, and internal
calibration.

POWERFUL AND FLEXIBLE
TRIGGERING

In addition to basic triggering
such as edge and pulse­width, these Digtial Phosphor
Oscilloscopes have several
trigger modes tailored for
specific design and debug
applications. Logic and pulse
triggers, including
setup/hold, glitch, slew rate,
and timeout triggers, capture
hard-to-catch digital design
problems. The optional video
trigger provides line and field
selection for NTSC, PAL, and
HDTV standards. The optional
communications trigger capa­bility addresses needs to
acquire a wide variety of
AMI, CMI, NRZ, and Ethernet
communication signals.

ADVANCED PERFORMANCE
FEATURES

Digital Phosphor
Oscilloscopes provide three

dimensions of signal informa­tion including amplitude,
time, and the distribution of
amplitude over time; in the
form of quantitative intensity
information. The resulting
information-rich display
enables the user’s eye to inte­grate the subtle patterns and
variations of actual signal
behavior.

Color –Grading displays histor­ical information that has been
acquired over time. This is
especially powerful when
used in DPO operation,
where the colors show rela­tively how often random
events occur.

Automatic Measurements elimi­nate the need for manually
measuring the waveform
against the graticule or with
cursors. Measurement gating,
(gating not available for DPO
operation) allows the user to
select a specific part of the
live waveform for measure­ment. Measurement statistics
(min, max, mean, and stan­dard deviation), give addi­tional information about the
variations in the measure­ments over time (for example,
worst case excursions),
increasing the confidence in
the quality of the measure­ments.

Waveform Histograms allow the
examination of the statistical
nature of the signal. Horizon­tal histograms, which are use­ful for evaluating signal jitter,
sample the waveform within
a specified region, sort the
values into time bins, and
plot the accumulated bin val­ues versus time. Vertical his­tograms, which are useful for
evaluating signal noise, sam­ple the waveform within a
specified region, sort the val­ues into amplitude bins, and
plot the accumulated bin val­ues versus amplitude.

For histograms of DPO acqui­sitions (both live and stored),
the specified region can be
repositioned and will update
to reflect the underlying 3
dimensional data base (32
bits in shallow mode, 64 bits
in deep mode).

Communication Mask
Testing (available as an

option) allows mask compli­ance testing of a wide variety
of communication signals to
industry standards. Special­ized measurement acces­sories, unique trigger modes,
built-in optical reference
receiver filters, mask autoset,
and mask violation counting
make these measurements
easily and repeatably.

page 2

A traditional DSO is unable to display the details and
dynamic changes of this composite video waveform.

The same composite video signal, captured with a Digi­tal Phosphor Oscilloscope, shows all the details of this
complex waveform, in real-time.

COMPLEMENTARY
MEASUREMENT
ACCESSORIES

Tektronix provides a wide
range of measurement acces­sories optimized for the TDS
family. These accessories are
designed to operate via the
TEKPROBE®interface, which
provides power and auto­matic scaling, to complete the
DPO measurement solutions.

Active Probes such as the P6217
and P6245 active probes were
designed specifically for the
DPO products. For example,
the P6217 is capable of
achieving the full 2 GHz
bandwidth on a TDS 794D,
while providing low loading.

The P6339A Buffered Passive
Probe is designed to provide

high impedance 500 MHz
general purpose probing
capabilities for the TDS 794D.

Optical-to-Electrical Converters
(P6701B, P6703B) allow conve-

nient analysis of optical
transmission signals with the
oscilloscope to standard
wavelengths for SONET/SDH
and Fibre Channel.

High-bandwidth Differential
Probes (P6246, P6247) enable

high bandwidth (up to 1 GHz)
differential measurements
while maintaining high com­mon-mode rejection.

Current Probes such as the
TCP202 and High-Voltage Dif-
ferential Probes such as the
P5205 and P5210 allow safe,
high-power measurements.
Direct Probe Readouts use
information from the probes
to display measurements in
units of Amps, Volts, and
Watts.

SOPHISTICATED DOCUMENTATION

Save screen displays in a
number of standard desktop
publishing formats to the
internal 3.5 in. DOS-compati­ble floppy disk drive. Trans­fer the disk to a PC for import
into word processing applica­tions. Make hardcopies
directly to monochrome or
color printers and plotters
connected to the computer
network (LAN), GPIB, RS­232, or Centronics ports, or
acquire waveforms, screen
displays, and scope settings
using Tektronix WaveStar

™

software running on a PC
interfaced to the GPIB port.

page 3

The horizontal histogram of the selected region of the
waveform shows the character of a metastable flip-flop
output.

A SONET/SDH (OC-3/STM-1) signal is compared with
the standard mask, showing a compliant waveform.

TDS 500D/700D Series Timebase System

TDS 794D TDS 784D/TDS 580D TDS 754D / TDS 724D /

TDS 540D/TDS 520D

Time Bases Main, delayed Main, delayed Main, delayed
Time Base Range 200 ps to 10 s/div 200 ps to 10 s/div 500 ps to 10 s/div
Time Base Accuracy ±25 ppm ±25 ppm ±25 ppm

(over any interval ≥1 ms) (over any interval ≥1 ms) (over any interval ≥1 ms)

Pre-trigger Position 0% to 100% 0% to 100% 0% to 100%

of any record of any record of any record

Delay Between Channels ≤50 ps (any 2 channels with equal V/div and coupling)