Instructions
067-0484-02 and above
Deskew Fixture
071-7022-02
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.
www.tektronix.com
*P071702202*
071702202
Copyright © Tektronix, Inc. All rights reserved.
Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes
that in all previously published material. Specifications and price change privileges reserved.
Tektronix, Inc., P.O. Box 500, Beaverton, OR 97077
TEKTRONIX and TEK are registered tradem arks of Tektronix, Inc.
Table of Contents
Mechanical Parts List
General Safety Summary iii...................................
Service Safety Summary v....................................
Contacting Tektronix vi.............................................
Deskew and Gain Cal Fixture Instructions 1............................
Overview 1.......................................................
Specifications 2...................................................
Powering the Deskew Fixture for Skew Adjust 2.........................
Connecting Probes to the Deskew Fixture 3.............................
Load balancing when deskewing a differential probe with a single-ended
probe 10......................................................
Using the Deskew Fixture to deskew channels 12.........................
Connecting to the Gain Cal Fixture 14..................................
Using the Deskew Fixture to Gain Cal 18................................
Mechanical Parts Lists 21............................................
Deskew Fixture Instructions
i
Table of Contents
ii
Deskew Fixture Instructions
General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to
this product or any products connected to it. To avoid potential hazards, use this
product only as specified.
Only qualified personnel should perform service procedures.
While using this product, you may need to access other parts of the system. Read
the General Safety Summary in other system manuals for warnings and cautions
related to operating the system.
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.
Use Proper Fuse. Use only the fuse type and rating specified for this product.
Avoid Exposed Circuitry. Do not touch exposed connections and components
when power is present.
Do Not Operate With Suspected Failures. If you suspect there is damage to this
product, have it inspected by qualified service personnel.
Do Not Operate in Wet/Damp Conditions.
Symbols and Terms
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry.
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 on the Product. The following symbols may appear on the product:
CAUTION
Refer to Manual
Protective Ground
(Earth) Terminal
Deskew Fixture Instructions
iii
General Safety Summary
iv
Deskew Fixture Instructions
Service Safety Summary
Only qualified personnel should perform service procedures. Read this Service
Safety Summary and the General Safety Summary before performing any service
procedures.
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.
Disconnect Power. To avoid electric shock, switch off the instrument power, then
disconnect the power cord from the mains power.
Use Care When Servicing With Power On. Dangerous voltages or currents may
exist in this product. Disconnect power, remove battery (if applicable), and
disconnect test leads before removing protective panels, soldering, or replacing
components.
To avoid electric shock, do not touch exposed connections.
Deskew Fixture Instructions
v
Service Safety Summary
Contacting Tektronix
Phone 1-800-833-9200*
Address Tektronix, Inc.
Department or name (if known)
14200 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
Web site www.tektronix.com
Sales support 1-800-833-9200, select option 1*
Service support 1-800-833-9200, select option 2*
Technical support www.tektronix.com/support
1-800-833-9200, select option 3*
6:00 a.m. -- 5:00 p.m. Pacific Standard Time
* This phone number is toll free in North America. After office hours, please leave a voice mail
message.
Outside North America, contact a Tektronix sales office or distributor; see th e Tektronix web
site for a list of offices.
vi
Deskew Fixture Instructions
Deskew and Gain Cal Fixture Instructions
Cable retainer (4)
Springs (3)
Guide posts (3 pairs)
Probe holders (2)
USB Port
GAIN CAL SIG
connector
Overview
Figure 1: Overview of Deskew Fixture
This fixture provides an edge source to time align (deskew) and to optimize
oscilloscope gain and offset accuracy at the probe tip.
The Deskew Fixture accommodates several T ektronix probes. It has components
that aid in the alignment of probes, such as cable retainers, stainless steel
springs, guide posts and square pins. The probes are held in place allowing
hands-free operation without requiring a probe arm.
CAUTION. Static discharge can damage any semiconductor component on this
deskew fixture.
Adhere to the following precautions to avoid damaging internal modules and
their components due to electrostatic discharge (ESD).
1. Transport and store the deskew fixture in static protected containers.
Deskew Fixture Instructions
1
Deskew and Gain Cal Fixture Instructions
2. Discharge the static voltage from your body by wearing a grounded antistatic
wrist strap while handling or servicing the deskew fixture. Do service only at
a static-free work station.
Specifications
H USB load, ᇓ60 mA typical, from the 5 V supply.
H Deskew Fixture output voltage, V
H Deskew Fixture Risetime and frequency, <600 ps, p =10MHz.
H Gain Cal input and output is less than
Table 1: Certifications and compliances
Category Standards or description
EC Declaration of Conformity -EMC
Australia/New Zealand Declaration of Conformity -- EMC
Meets intent of Directive 89/336/EEC for Electromagnetic Compatibility. Compliance was
demonstrated to the following specifications as listed in the Official Journal of the European Union:
EN 61326 1,2,3 EMC requirements for Class A electrical equipment for measurement, control
and laboratory use1
EN 61000--3--2 4 AC power line harmonic emissions
1 Radiated emissions may exceed the levels specified in EN 61326 when this instrument is
connected to a test object.
2 Exposed circuitry on the Deskew Fixture may be damaged by electrostatic discharge. IEC
61000--4--2 is not applicable to the circuit board area.
3 Immunity performance is dependent on the device supplying power via the USB connection.
4 Compliance to EN 61000--3--2 is dependent on the device supplying power via the USB
connection. Compliance is assured when powered by a TDS6000 or TDS7000 series instrument.
Complies with EMC provision of Radiocommunications Act per the following standard(s):
AS/NZS 2064.1/2 Class A limits for Industrial, Scientific, and Medical Equipment: 1992
ᇓ1V, Vohᇓ2V.
ol
±10 V
Powering the Deskew Fixture for Skew Adjust
The Deskew Fixture is powered from a USB port. Using a USB cable (supplied
with the fixture) you can connect the fixture to the USB port on the rear panel of
the oscilloscope or to a USB port on the Tektronix recommended USB keyboard.
You can use an external USB hub or PC.
Connect the Deskew Fixture to a USB power source.
2
Deskew Fixture Instructions
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