Tektronix TDP4000 Use and care manual

TDP3500 and TDP4000
3.5 GHz and 4 GHz Differential Probes
ZZZ
Technical Reference
xx
www.tek.com
071-2297-02

Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are
protected by national copyright laws and international treaty provisions.
Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all
previously published material. Specifications and price change privileges reserved.
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
Contacting Tektronix
Tektronix, Inc.
14150 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
For product information, sales, service, and technical support:
In North America, call 1-800-833-9200.
Worldwide, visit www.tek.com to find contacts in your area.

Warranty
Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1) year from the date of
shipment. If any such product proves defective during this warranty period, Tektronix, at its option, either will repair the defective
product without charge for parts and labor, or will provide a replacement in exchange for the defective product. Parts, modules and
replacement products used by Tektronix for warranty work may be new or reconditioned to like new performance. All replaced
parts, modules and products become the property of Tektronix.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the warranty period
and make suitable arrangements for the performance of service. Customer shall be responsible for packaging and shipping the
defective product to the service center designated by Tektronix, with shipping charges prepaid. Tektronix shall pay for the return of the
product to Customer if the shipment is to a location within the country in which the Tektronix service center is located. Customer shall
be responsible for paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate maintenance and
care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting from attempts by personnel
other than Tektronix representatives to install, repair or service the product; b) to repair damage resulting from improper use or
connection to incompatible equipment; c) to repair any damage or malfunction caused by the use of non-Tektronix supplies; or
d) to service a product that has been modified or integrated with other products when the effect of such modification or integration
increases the time or difficulty of servicing the product.
THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE PRODUCT IN LIEU OF ANY OTHER WARRANTIES,
EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX' RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS
IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX
AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH
DAMAGES.
[W2 – 15AUG04]

Table of Contents
Table of Contents
Important safety information .......................................................................................................... iii
General safety summary......................................................................................................... iii
Service safety summary ......................................................................................................... iv
Terms in this manual............................................................................................................. v
Symbols and terms on the product.............................................................................................. v
Preface................................................................................................................................. vi
Specifications.......................................................................................................................... 1
Warranted characteristics........................................................................................................ 1
Typical characteristics............................................................................................................ 2
Nominal characteristics ..........................................................................................................5
Probe tip adapter specifications................................................................................................. 6
Performance verification.............................................................................................................. 10
Required equipment ............................................................................................................ 10
Special adapters ................................................................................................................ 11
Preparation...................................................................................................................... 13
DC Attenuation Accuracy....................................................................................................... 14
Differential Signal Range ....................................................................................................... 16
Rise Time........................................................................................................................17
Maintenance .......................................................................................................................... 22
Inspection and cleaning......................................................................................................... 22
Replacement parts.............................................................................................................. 22
Preparation for shipment........................................................................................................ 22
TDP3500 and TDP4000 Technical Reference i

Table of Contents
ii TDP3500 and TDP4000 Technical Reference

Important safety information
Important safety information
This manual contains information and warnings that must be followed by the user for safe operation and to keep the
product in a safe condition.
To safely perform service on this product, additional information is provided at the end of this section. (See page iv,
Service safety summary.)
General safety summary
Use the product only as specified. Review the following safety precautions to avoid injury and prevent damage to this product
or any products connected to it. Carefully read all instructions. Retain these instructions for future reference.
This product shall be used in accordance with local and national codes.
For correct and safe operation of the product, it is essential that you follow generally accepted safety procedures in addition
to the safety precautions specified in this manual.
The product is designed to be used by trained personnel only.
Only qualified personnel who are aware of the hazards involved should remove the cover for repair, maintenance, or
adjustment.
Before use, always check the product with a known source to be sure it is operating correctly.
This product is not intended for detection of hazardous voltages.
Use personal protective equipment to prevent shock and arc blast injury where hazardous live conductors are exposed.
While using this product, you may need to access other parts of a larger system. Read the safety sections of the other
component manuals for warnings and cautions related to operating the system.
When incorporating this equipment into a system, the safety of that system is the responsibility of the assembler of the system.
To avoid fire or personal injury
Observe all terminal ratings. To avoid fire or shock hazard, observe all ratings and markings on the product. Consult
the product manual for further ratings information before making connections to the product. Do not exceed the Measurement
Category (CAT) rating and voltage or current rating of the lowest rated individual component of a product, probe, or accessory
if applicable. Use caution when using 1:1 test leads because the probe tip voltage is directly transmitted to the product.
Do not apply a potential to any terminal, including the common terminal, that exceeds the maximum rating of that terminal.
The measuring terminals on this product are not rated for connection to mains or Category II, III, or IV circuits.
Do not operate without covers. Do not operate this product with covers or panels removed, or with the case open.
Hazardous voltage exposure is possible.
Avoid exposed circuitry. Do not touch exposed connections and components when power is present.
Do not operate with suspected failures. If you suspect that there is damage to this product, have it inspected by
qualified service personnel.
Disable the product if it is damaged. Do not use the product if it is damaged or operates incorrectly. If in doubt about safety of
the product, turn it off and disconnect the power cord. Clearly mark the product to prevent its further operation.
TDP3500 and TDP4000 Technical Reference iii

Important safety information
Before use, inspect voltage probes, test leads, and accessories for mechanical damage and replace when damaged. Do not
use probes or test leads if they are damaged, if there is exposed metal, or if a wear indicator shows.
Examine the exterior of the product before you use it. Look for cracks or missing pieces.
Use only specified replacement parts.
Do not operate in wet/damp conditions. Be aware that condensation may occur if a unit is moved from a cold to a
warm environment.
Do not operate in an explosive atmosphere.
Keep product surfaces clean and dry. Remove the input signals before you clean the product.
Probes and test leads
Remove all probes, test leads and accessories that are not in use.
Use only correct Measurement Category (CAT), voltage, temperature, altitude, and amperage rated probes, test leads, and
adapters (if applicable) for any measurement.
Inspect the probe and accessories. Before each use, inspect probe and accessories for damage (cuts, tears, or
defects in the probe body, accessories, or cable jacket). Do not use if damaged.
Servicesafetysummary
The Service safety summary section contains additional information required to safely perform service on the product. Only
qualified personnel should perform service procedures. Read this Service safety summary and the General safety summary
before performing any service procedures.
To avoid electric shock. Do not touch exposed connections.
Do not service alone. Do not perform internal service or adjustments of this product unless another person capable of
rendering first aid and resuscitation is present.
iv TDP3500 and TDP4000 Technical Reference

Important safety information
Terms in this manual
These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in damage to this product or other property.
Symbols and terms on the product
These terms may appear on the product:
WARNING indicates an injury hazard not immediately accessible as you read the marking.
CAUTION indicates a hazard to property including the product.
The following symbol(s) may appear on the product:
TDP3500 and TDP4000 Technical Reference v

Preface
Preface
This is the Technical Reference Manual for the TDP3500 and TDP4000 differential probes. This manual provides
specifications and performance verification procedures for the probe.
vi TDP3500 and TDP4000 Technical Reference

Specifications
Specifications
The specifications in Tables 1 through 4 apply to a TDP3500 and TDP4000 differential probes installed on a Tektronix
oscilloscope. The probe must have a warm-up period of at least 20 minutes and be in an environment that does not exceed
the limits described. (See Table 2.) The probe calibration and Autozero routines should be run on the host instrument before
verifying the warranted probe specifications. Specifications for the TDP3500 and TDP4000 differential probes fall into three
categories: warranted, typical, and nominal characteristics.
Warranted characteristics
Warranted characteristics describe guaranteed performance within tolerance limits or certain type-tested requirements.
(See Table 2.) Warranted characteristics that have Performance Verification checks are marked with the symbol.
Performance verification procedures are contained in the TDP3500 and TDP4000 Technical Reference, which is Tektronix
part number 071-2297-XX.
Table 1: Warranted electrical characteristics
Specification TDP3500 TDP4000
Differential signal range (DC coupled) ±2.0 V(DC + peak AC) ±2.0 V(DC + peak AC)
Common-mode signal range (DC
coupled)
+5Vto–4V
(DC + peak AC) +5 V to –4 V(DC + peak AC)
Maximum nondestructive input voltage
between signal and common of the same
channel
±15 V(DC + peak AC) ±15 V(DC + peak AC)
DC attenuation accuracy ±2% of input ±2% of input
Rise time, probe only
(10–90%, + 20 °C to + 30 °C)
≤140 ps
Temperature Operating: 0 to +40 °C (32 °F to +104 °F)
Nonoperating: –40 to +71 °C (–40 °F to +159 °F) 1
Humidity Operating: 5% - 90% RH, tested at + 30 to +40 °C (+86 °F to +104 °F)
Nonoperating: 5% - 90% RH, tested at +30 to +60 °C (+86 °F to +140 °F)
1See warning that follows.
WARNING. To avoid a burn hazard at high ambient temperatures, do not touch the probe with bare hands at nonoperating
temperatures above +50 °C.
TDP3500 and TDP4000 Technical Reference 1

Specifications
Typical characteristics
Typical characteristics describe typical but not guaranteed performance.
Table 2: Typical electrical characteristics
Specification TDP3500 TDP4000
Bandwidth (probe only) DC to ≥3.5 GHz DC to ≥4GHz
Rise time, probe only
(10–90%, + 20 °C to + 30 °C)
≤115 ps
Differential input resistance, DC coupled 100 kΩ100 kΩ
Common mode input resistance 50 kΩ50 kΩ
Differential input capacitance <0.3 pF at 10 MHz <0.3 pF at 10 MHz
Common-mode input capacitance <0.45 pF per side at 100 MHz <0.45 pF per side at 100 MHz
Offset accuracy ±10 mV ±10 mV
Differential offset range ±1 V ±1 V
Common mode rejection ratio (See Figure 4 on page 4.)
System noise
Referred to probe input <35 nV√Hz @ 100 MHz <35 nV√Hz @ 100 MHz
Input impedance (See Figure 5 on page 4.)
Propagation delay 5.4 ns ±2 ns from probe tip to output 5.4 ns ±2 ns from probe tip to output
Figure 1: TDP3500 typical bandwidth
2TDP3500 and TDP4000 Technical Reference

Specifications
Figure 2: TDP4000 typical bandwidth
Figure 3: TDP3500 Typical rise time
TDP3500 and TDP4000 Technical Reference 3

Specifications
Figure 4: TDP3500 and TDP4000 Typical Common-Mode Rejection Ratio
Figure 5: TDP3500 and TDP4000 Typical input impedance versus frequency
4TDP3500 and TDP4000 Technical Reference

Specifications
Table 3: Typical mechanical characteristics
Dimensions, input connection 0.63 mm (0.025 in) square pin sockets on 2.54 mm
(0.100 in) centers
Dimensions, control box 117mm×41mm×29mm(4.6in×1.6in×1.15in)
Dimensions, probe head 86 mm × 11 mm × 8.9 mm (3.4 in × 0.45 in × 0.35 in)
Dimensions, output cable 1.22 m (48 in)
Unit weight (probe only) 144.5 g (5.1 oz)
Figure 6: Probe dimensions
Nominal characteristics
Nominal characteristics describe guaranteed traits, but the traits do not have tolerance limits.
Table 4: Nominal electrical characteristics
Input configuration Differential (two inputs, + and - ), with case ground
Output coupling DC coupling
Voltage range +/–2 V
Termination Terminate output into 50 Ω
TDP3500 and TDP4000 Technical Reference 5

Specifications
Probe tip adapter specifications
This section describes the characteristics of the adapters that are included in your accessory kit. The adapters are listed
in order of performance, beginning with the fastest. You will get the best probe performance by connecting the probe
directly to square pins on your circuit. However, as test points are not always as convenient, these adapters make taking
measurements easier while maintaining the best signal fidelity.
NOTE. All adapter specifications are typical unless otherwise indicated.
Variable Spacing Adapter
Tektronix part number: 016-1885-xx
Bandwidth: <3.5 GHz (TDP3500), <4 GHz (TDP4000),
10/90 Rise time: <120 ps (TDP3500), <110 ps (TDP4000)
This adapter has adjustable pins that can span from 0.020 to 0.180 inch apart.
6TDP3500 and TDP4000 Technical Reference

Specifications
Square Pin Adapter
Tektronix part number: 016-1884-xx
Bandwidth: <3.5 GHz
10/90 Rise time: <120 ps
Use this adapter to provide easy access to square-pin test points that you frequently check, or to other probe accessories.
TDP3500 and TDP4000 Technical Reference 7

Specifications
Solder-in Adapter Kit
Tektronix part number: 020-2505-xx Solder-In Adapter Kit
(Includes two adapters, Tektronix part number 016-1926-xx, and a Resistor/Wire Kit, Tektronix part number 020-2506-xx)
You can reorder the kit. The Resistor/Wire Kit includes ten each resistors (10 Ωand 20 Ωbonded to 0.020 in wire), and
ten lengths of 0.020 in solder wire. The kit also includes ten each resistors (10 Ωand 20 Ωbonded to 0.008 in wire), and
ten lengths of 0.008 in solder wire.
Bandwidth: <4.3 GHz (Solder wire), <3.8 GHz (10 Ωresistor), <3.7 GHz (20 Ωresistor)
10/90 Rise time: <124 ps (Solder wire), <131 ps (10 Ωresistor), <140 ps (20 Ωresistor)
Use this adapter on test points that you frequently check that do not have square pins or other convenient connections.
Solder the wire or resistor leads that come with the kit to your test points.
CAUTION. To prevent short circuits, solder and dress the adapter leads carefully, and make sure that the leads do not touch
other conductors when the adapter is not connected to the probe.
To prevent damaging this adapter, do not connect it to 0.025” square pins. Instead, use the square-pin adapter included
in the probe accessory kit.
8TDP3500 and TDP4000 Technical Reference

Specifications
Y-Lead Adapter
Tektronix part number: 196-3434-xx
Usable Bandwidth: <100 MHz
Calculated rise time: 1.4 ns
Use this adapter for DC and low-frequency measurements. The socket ends plug onto square pins, component leads, and
the MicroCKT Test Tip adapters included with the probe.
MicroCKT Test Tips
Tektronix part number: 206-0569-xx
Usable Bandwidth: <100 MHz
Calculated rise time: 3.5 ns
Use the MicroCKT Test Tips with the Y-lead adapters. Due to the length of these adapters, they are recommended only for
DC and low-frequency measurements.
TDP3500 and TDP4000 Technical Reference 9

Performance verification
Performance verification
Use the following procedures to verify the warranted specifications of the TDP3500 and TDP4000 Differential Probe. Before
beginning these procedures, photocopy the test record and use it to record the performance test results. (See Table 6 on
page 21.) The recommended calibration interval is one year.
These procedures test the following specifications:
DC attenuation accuracy
Differential signal range
Rise time
Required equipment
Table 5 lists the equipment required to perform the performance verification procedures. The types and quantities of
connectors may vary depending on the specific equipment you use.
Table 5: Test equipment
Description Minimum requirements Example product
Digitizing oscilloscope withTekVPI
interface
Fully compatible with TekVPI interface Tektronix DPO7000 series oscilloscope
(w/V3.02 or higher firmware)
Sampling oscilloscope Tektronix TDS8000 series oscilloscope
Sampling module Tektro nix 80E0x
Sampling module TDR output; 250 mV step, <100 ps
rise time
Tektro nix 80E04
TekVPI caIibration fixture Optional probe accessory Tektronix part number 067-1701-xx
Probe calibration fixture Optional probe accessory Tektronix part number 067-0419-xx
BNC-to-probe tip adapter Optional probe accessory Tektronix part number 067-1734-xx
BNC Male-to-SMA Female adapter As per description Tektronix part number 015-0572-xx
Calibrated DC voltage source Adjustable from 0 V to ≥10 V. Outputs
must be isolated from earth ground.
Keithley 2400
DMM (2 required) DC Accuracy ≥0.5% on range to
measure 10 V, averaging mode.
Fluke 187
BNC cables (2) 50Ω,42inch Tektronix part number 012-0057-xx
SMA cables (2) 50Ω,28inch Tektronix part number 012-0649-xx
Banana-to-banana patch cords (2) 1red
1black
Tektronix part number 012-0031-xx
Tektronix part number 012-0039-xx
Dual-male-banana-to-female BNC
adapter
As per description Tektronix part number 103-0090-xx
Precision inline BNC terminator 50 Ω±0.1% Tektronix part number 011-0129-xx
Y-lead adapter Standard accessory included w/probe Tektronix part number 196-3434-xx
MicroCKT test tips (2) Standard accessory included w/probe Tektronix part number 206-0569-xx
10 TDP3500 and TDP4000 Technical Reference