Tektronix TDS6604B Use and care manual

Technical Reference
TDS6604B & TDS6804B
Digital Storage Oscilloscopes
Specifications and Performance Verification
071-1502-02
*P071150202*
071150202
Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.
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TDS6000B Series Specifications and Performance Verification Technical Reference i
Table of Contents
Specifications 1--1.............................................
Product and Feature Description 1--1....................................
Acquisition Features 1--2..........................................
Signal Processing Features 1--2.....................................
Display Features 1--2.............................................
Measurement Features 1--3.........................................
Trigger Features 1--3..............................................
Convenience Features 1--3.........................................
Specification Tables 1--4..............................................
Performance Verification 2--1...................................
Conventions 2--2....................................................
Brief Procedures 3--1...........................................
Self Tests 3--1.......................................................
Verify Internal Adjustment, Self Compensation, and Diagnostics 3--1.......
Functional Tests 3--2.................................................
Verify All Input Channels 3--3......................................
Verify the Time Base 3--6..........................................
Verify the A (Main) and B (Delayed) Trigger Systems 3--8...............
Performance Tests 4--1.........................................
Prerequisites 4--1....................................................
Equipment Required 4--2..............................................
TDS6000B Test Record 4--4...........................................
Signal Acquisition System Checks 4--13...................................
Check DC Voltage Measurement Accuracy 4--13........................
Check Offset Accuracy 4--17........................................
Check Maximum Input Voltage 4--21.................................
Check Analog Bandwidth 4--25......................................
Check Delay Between Channels 4--29.................................
Check Channel Isolation (Crosstalk) 4--33.............................
Check Input Impedance 4--38........................................
Time Base System Checks 4--40.........................................
Check Long-Term Sample Rate and Delay Time Accuracy and
Reference 4--40............................................
Check Delta Time Measurement Accuracy 4--44........................
Trigger System Checks 4--47............................................
Check Time Accuracy for Pulse, Glitch, Timeout, and Width Triggering 4--47.
Check Sensitivity, Edge Trigger, DC Coupled 4--50......................
Output Signal Checks 4--55.............................................
Check Outputs — CH 3 Signal Out and Aux Trigger Out 4--56.............
Check Probe Compensation Output 4--58..............................
Serial Trigger Checks (Option ST Only) 4--62..............................
Check Serial Trigger Baud Rate Limits and Word Recognizer Position
Accuracy 4--62............................................
Check Serial Trigger Clock Recovery Range 4--69.......................
Sine Wave Generator Leveling Procedure 4--73.............................

Table of Contents
ii TDS6000B Series Specifications and Performance Verification Technical Reference

TDS6000B Series Specifications and Performance Verification Technical Reference 1-1
Specifications
This chapter contains the specifications for the TDS6000B Series. All specifica-
tions are guaranteed unless labeled “typical.” Typical specifications are provided
for your convenience but are not guaranteed. Specifications that are marked with
the nsymbol are checked in the Performance Tests section. Unless noted
otherwise, all specifications apply to all TDS6000B Series oscilloscopes.
To meet specifications, the following conditions must be met:
HThe oscilloscope must have been calibrated in an ambient temperature
between 20 °C and 30 °C(68°F and 86 °F).
HThe oscilloscope must be operating within the environmental limits listed in
Table 1--11, page 1--17.
HThe oscilloscope must be powered from a source that meets the specifica-
tions listed in Table 1--9, page 1--15.
HThe oscilloscope must have been operating continuously for at least 20
minutes within the specified operating temperature range.
HYou must perform the Signal Path Compensation procedure after the
20-minute warm-up period, and the ambient temperature must not change
more than 5 °C(9°F) without first repeating the procedure. See page 3--2 for
instructions to perform this procedure.
Product and Feature Description
Your TDS6000B Series is shown in Table 1--1.
Table 1- 1: TDS6000B Series
Model
Number of
channels Bandwidth
Maximum sample
rate (real time)
TDS6604B 46GHz 20 GS/s
TDS6804B 48GHz 20 GS/s

Specifications
1-2 TDS6000B Series Specifications and Performance Verification Technical Reference
Separate Digitizers. Ensure accurate timing measurements with separate digitizers
for each channel. Acquisition on multiple channels is always concurrent. The
digitizers can also be combined to yield a higher sample rate on a single channel.
Long Record Lengths. Maximum record length up to 32,000,000 points simulta-
neously on all four channels.
Peak Detect Acquisition Mode. See pulses as narrow as 50 ps even at the slower
time base settings. Captures narrow glitches at all real-time sampling rates.
Acquisition Control. Acquire continuously or set up to capture single shot
acquisitions. Enable or disable optional acquisition features such as equivalent
time.
Horizontal Delay. Use delay when you want to acquire a signal at a significant
time interval after the trigger point. Toggle delay on and off to quickly compare
the signal at two different points in time.
Average, Envelope, and Hi Res Acquisition. Use Average acquisition mode to
remove uncorrelated noise from your signal. Use Envelope to capture and
display the maximum variation of the signal. Use Hi Res to increase vertical
resolution for lower bandwidth signals.
Waveform Math. Set up simple math waveforms using the basic arithmetic
functions or create more advanced math waveforms using the math expression
editor. Waveform expressions can even contain measurement results and other
math waveforms.
Spectral Analysis. Display spectral magnitude and phase waveforms based on
your time-domain acquisitions. Control the oscilloscope using the traditional
spectrum analyzer controls such as span and center frequency.
Color LCD Display. Identify and differentiate waveforms easily with color coding.
Waveforms, readouts, and inputs are color matched to increase productivity and
reduce operating errors.
MultiView Zoom. To take advantage of the full resolution of the instrument you
can zoom in on a waveform to see the fine details. Both vertical and horizontal
zoom functions are available. Zoomed waveforms can be aligned, locked, and
automatically scrolled.
Acquisition Features
Signal Processing
Features
Display Features

Specifications
TDS6000B Series Specifications and Performance Verification Technical Reference 1-3
Cursors. Use cursors to take simple voltage, time, and frequency measurements.
Automatic Measurements. Choose from a large palette of amplitude, time, and
histogram measurements. You can customize the measurements by changing
reference levels or by adding measurement gating.
Simple and Advanced Trigger Types. Choose simple edge trigger or choose from
eight advanced trigger types to help you capture a specific signal fault or event.
Dual Triggers. Use the A (main) trigger system alone or add the B trigger to
capture more complex events. You can use the A and B triggers together to set
up a delay-by-time or delay-by-events trigger condition.
Comm Triggers. Optional on TDS6000B Series. Use comm triggers to trigger on
communication signals.
Serial Triggers. Optional on TDS6000B Series. Use serial triggers to trigger on
serial pattern data.
Recovered Clock and Data Triggers. Use recovered clock and data internally to
trigger your waveforms.
Autoset. Use Autoset to quickly set up the vertical, horizontal, and trigger
controls for a usable display.
Touch Screen Interface. You can operate all oscilloscope functions (except the
power switch) from the touch screen interface. If convenient, you can also install
a mouse and keyboard to use the interface.
Toolbar or Menu Bar. You can choose a toolbar operating mode that is optimized
for use with the touch screen, or a PC-style menu-bar operating mode that is
optimized for use with a mouse.
Open Desktop. The oscilloscope is built on a Microsoft Windows software
platform; the oscilloscope application program starts automatically when you
apply power to the instrument. You can minimize the oscilloscope application
and take full advantage of the built-in PC to run other applications. Moving
waveform images and data into other applications is as simple as a copy/paste
operation.
Measurement Features
Trigger Features
Convenience Features

Specifications
1-4 TDS6000B Series Specifications and Performance Verification Technical Reference
Dedicated Front Panel Controls. The front panel contains knobs and buttons to
provide immediate access to the most common oscilloscope controls. Separate
vertical controls are provided for each channel. The same functions are also
available through the screen interface.
Data Storage and I/O. The oscilloscope has a removeable hard disk drive a
CD-RW drive, that can be used for storage and retrieval of data. The oscilloscope
has GPIB, USB, Centronics, and Ethernet ports for input and output to other
devices.
Online Help. The oscilloscope has a complete online help system that covers all
its features. The help system is context sensitive; help for the displayed control
window is automatically shown if you touch the help button. Graphical aids in
the help windows assist you in getting to the information you need. You can also
access the help topics through a table of contents or index.
Specification Tables
Table 1- 2: Channel input and vertical specifications
Characteristic Description
Input channels Four
Input coupling DC and GND
Channel input is disconnected from input termination when
using GND coupling.
nInput impedance, DC
coupled
50 Ω±2.5% at 25 _C(77_F), ±0.2% over 0 _Cto
40 _C(32_F to 122 _F)
Maximum voltage at input <1 VRMS for <100 mV settings and
≤5V
RMS for ≥100 mV settings
Number of digitized bits 8bits
Sensitivity range 10 mV/div to 1 V/division, in a 1-2-5 sequence

Specifications
TDS6000B Series Specifications and Performance Verification Technical Reference 1-5
Table 1- 2: Channel input and vertical specifications (Cont.)
Characteristic Description
nDC gain accuracy 10 mV/div to 99.5
mV/div
±(2.5% + |2% ×net offset|)
100 mV/div to 1
V/div
±(2.5% + |2% ×net offset/10|)
nDC voltage measurement
accuracy
Measurement type DC accuracy (in volts)
Average acquisition
mode (≥16 averages)
10 mV/div to
99.5 mV/div
±[(2.5% + |2% ×net offset|) ×|reading --
net offset | + offset accuracy + 0.08 divi-
sion ×V/division]
100 mV/div to
1V/div
±[(2.5% + |2% ×net offset/10|) ×
|reading -- net offset | + offset accuracy
+ 0.08 division ×V/division]
Delta voltage measurement
between any two averages of
1
6
w
a
v
e
f
o
r
m
s
a
c
q
u
i
r
e
d
10 mV/div to
99.5 mV/div
±((2.5% + |2% ×net offset|) ×|reading
| ) + 0.16 division ×V/division setting
≥16 w
a
v
eforms
a
c
quired
under the same setup and
ambient conditions
100 mV/div to
1V/div
±((2.5% + |2% ×net offset/10|) ×
|reading| ) + 0.16 division ×V/division
setting
where, net offset = offset -- ( position ×volts/division)
Nonlinearity, typical < 1 DL, differential; ≤2 DL integral, independently based
nAnalog bandwidth DC 50 Ωcoupling, with amplitude tolerance of --3dB operating
temperatures of 15 °Cto40°C(59°F to 104 °F) inclusive.
SCALE range Bandwidth
≥10 mV/div TDS6604B DC to ≥6GHz
TDS6804B DC to ≥7GHz
nDigitally enhanced band-
width, DC coupled
DC 50 Ωcoupling, with amplitude tolerance of --3dB operating
temperatures of 15 °Cto40°C(59°F to 104 °F).
SCALE range Bandwidth
≥10 mV/div TDS6804B DC to ≥8GHz
Analog bandwidth with
P7380 or TCA-BNC adapter
for TDS6604B
Full bandwidth, operating ambient 15 °Cto30°C(59°Fto
86 °F), derated by 20 MHz/°C above 30 °C(86°F)
Analog bandwidth with
P7380 or TCA-BNC adapter
for TDS6804B
8 GHz, Full enhanced bandwidth, operating ambient 15 °Cto
30 °C(59°Fto86°F), derated by 20 MHz/ °C above 30 °C
(86 °F)

Specifications
1-6 TDS6000B Series Specifications and Performance Verification Technical Reference
Table 1- 2: Channel input and vertical specifications (Cont.)
Characteristic Description
Rise time, typical No digital bandwidth enhancement
TDS6604B 10 -- 90% rise time is 70 ps vertical
sensitivities ≥10 mV/div
20 -- 80% rise time is 53 ps vertical
sensitivities ≥10 mV/div
TDS6804B 10 -- 90% rise time is 62 ps vertical
sensitivities ≥10 mV/div
20 -- 80% rise time is 43 ps vertical
sensitivities ≥10 mV/div
Digital bandwidth enhancement
TDS6804B 10 -- 90% rise time is 50 ps vertical
sensitivities ≥10 mV/div
20 -- 80% rise time is 35 ps vertical
sensitivities ≥10 mV/div
Step response settling errors,
typical
SCALE range and
step amplitude
Settling error at time after step
10 mV/div to
99.5 mV/div,
with ≤1.5 V step
20 ns: ≤2%
1ms:≤0.1%
100 mV/div to
1V/div,
with ≤3Vstep
20 ns: ≤2%
1ms:≤0.2%
Pulse response, peak detect
l
d
Sample rate setting Minimum pulse width
or en
v
elope mode 20 GS/s or less 50 ps
Position range ± 5 divisions
Offset range SCALE range Offset range
10 mV/div to 50
mV/div
±0.50 V
50.5 mV/div to
99.5 mV/div
±0.25 V
100 mV/div to
500 mV/div
±5V
505 mV/div to
1V/div
±2.5 V
nOffset accuracy Volts/div setting Offset accuracy
10 mV/div to
99.5 V/div
±(0.7% ×| net offset | + 1.5 mV + 0.1 div
×V/div setting)
100 mV/div to
1V/div
±(0.8% ×| net offset | + 15 mV + 0.1 div
×V/div setting)
where, net offset = offset -- (position ×volts/division)