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Tektronix 067-0484-02 Instructions Manual
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Tektronix 067-0484-02 Instructions Manual

Tektronix 067-0484-02 Instructions Manual

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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 per-
forming service.
www.tektronix.com
*P071702202*
071702202

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Summary of Contents for Tektronix 067-0484-02

  • Page 1 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 per- forming service.
  • Page 2 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...

  • Page 3: Table Of Contents

    ........Contacting Tektronix ..........
  • Page 4 Table of Contents Deskew Fixture Instructions...
  • Page 5 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.
  • Page 6 General Safety Summary Deskew Fixture Instructions...
  • Page 7 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.
  • Page 8 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 the Tektronix web site for a list of offices. Deskew Fixture Instructions...

  • Page 9: Deskew And Gain Cal Fixture Instructions

    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 Tektronix probes. It has components that aid in the alignment of probes, such as cable retainers, stainless steel springs, guide posts and square pins.

  • Page 10: Specifications

    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.

  • Page 11: Connecting Probes To The Deskew Fixture

    Tektronix probes individually or in combination, (for example, four differential probes with up to two single-ended probes). Table 2 refers to diagrams that show how to attach a Tektronix probe to the fixture. Refer to the symbols screened on the fixture to establish the correct polarity.
  • Page 12 Deskew and Gain Cal Fixture Instructions 4. All probe tips should contact the SKEW ADJUST pins at the center of the probe tips. See Figure 3 on page 5. 5. Set the probe atten switch to 1X position. 6. You can install up to four differential probes using both sides of the Deskew Fixture.
  • Page 13 Figure 3: P6246, P6247, P6248, P6330, or P7330 fixture connections P6249, P7240 without tips Use this procedure to deskew the P6249 and P7240 single-ended probes without Tektronix probe tips: If single-ended probes with tips are required go to the next section. 1. Remove any probe tips from the probe.
  • Page 14 Use this procedure to deskew P7260 single-ended probe. To deskew P6249 and tips P7240 single-ended probes install the Tektronix probe tips: 1. Install the guide posts and probe holders to the SKEW ADJUST probe holder position. See Figure 6 on page 8.
  • Page 15 Deskew and Gain Cal Fixture Instructions 4. Position the probe tips to the solder pad locations with the appropriate polarity. See Figures 7 and 8 on page 9. 5. Firmly slide the probes forward until the probe tips make contact with the SKEW ADJUST solder pads.
  • Page 16 Deskew and Gain Cal Fixture Instructions SKEW ADJUST probe holder postion SKEW ADJUST postion GAIN CAL postion GAIN CAL probe holder postion Figure 6: Alternate locations for guide posts and probe holders Deskew Fixture Instructions...
  • Page 17 Deskew and Gain Cal Fixture Instructions Solder pads Figure 7: P6249, P7240 or P7260 with tips P7260 P7260 Figure 8: P6249, P7240 or P7260 on each side of the fixture, with tips Deskew Fixture Instructions...

  • Page 18: Load Balancing When Deskewing A Differential Probe With A Single-Ended Probe

    Deskew and Gain Cal Fixture Instructions Step 1 Pull probe holder back Step 2 Push probe forward Figure 9: Probe tip contact loading Load balancing when deskewing a differential probe with a single-ended probe When deskewing a differential probe with a single-ended probe and to ensure accurate deskewing, an identical single ended probe must be installed onto the deskew pin of opposite polarity to balance the load of the single probe.
  • Page 19 Deskew and Gain Cal Fixture Instructions Differential probe Deskewed probe Load balance probe Figure 10: P6249 and P7240 load balance detail without tips Load balance probe Differential probe Deskewed probe Figure 11: P6249, P7240 or P7260 load balance detail with tips Deskew Fixture Instructions...

  • Page 20: Using The Deskew Fixture To Deskew Channels

    Deskew and Gain Cal Fixture Instructions Using the Deskew Fixture to deskew channels You can adjust a relative time delay for each channel. This lets you align the signals to compensate for signals that can come in from cables of differing lengths.
  • Page 21 Deskew and Gain Cal Fixture Instructions 11. Touch the Vertical button menu to display the Vertical Setup menu control window. 12. Touch the Probe Deskew button to display the channel-deskew control window. 13. Select one of the slower channels. NOTE. Do the next step at a signal amplitude within the same attenuator range (vertical scale) as your planned signal measurements.

  • Page 22: Connecting To The Gain Cal Fixture

    Touch Calibrate to perform the Signal Path Compensation. 2. Connect the oscilloscope PROBE COMPENSATION (PROBE CALIBRA- TION for the TDS6000B) output to a BNC cable (Tektronix part number 012-0208-00). Connect the remaining end of the BNC cable to the GAIN CAL SIG connector located on the deskew board.
  • Page 23 Deskew and Gain Cal Fixture Instructions P6246, P6247, P6248, Use this procedure to Gain Cal the P6246, P6247, P6248, P6330, and P7330 P6330, P7330 probes: 1. Insert the probe cable into the cable retainer. 2. Insert the probe body flush to the board between the adjacent spring and guide post.
  • Page 24 Deskew and Gain Cal Fixture Instructions P6249, P7240 without tips Use this procedure to Gain Cal the P6249 and P7240 probes without Tektronix probe tips: 1. Remove any probe tips from the probe. 2. Slide the probe over the top of the ground and middle GAIN CAL pins. Be sure the probe is perpendicular to the fixture.
  • Page 25 Deskew and Gain Cal Fixture Instructions 4. Position the probe tips to the solder pad locations with the appropriate polarity. See Figure 15 on page 17. 5. Slide the probe forward until the probe tips make contact with the GAIN CAL solder pads.

  • Page 26: Using The Deskew Fixture To Gain Cal

    Deskew and Gain Cal Fixture Instructions Differential and single It is a possible to perform a Gain Cal using a differential and a single ended ended probe Gain Cal probe at the same time. 1. Remove the guide posts from the GAIN CAL position. 2.
  • Page 27 Deskew and Gain Cal Fixture Instructions 7. Touch the Calibrate Probe button. 8. When the routine is finished, remove the connections from the deskew fixture. Check the calibration Perform the following procedure to check calibration status: status 1. From the tool bar, touch the Vertical button to display the oscilloscope Vertical setup control window.
  • Page 28 Deskew and Gain Cal Fixture Instructions Deskew Fixture Instructions...

  • Page 29: Mechanical Parts Lists

    PORTLAND, OR 97220 6D224 FCI USA INC I/O & CABLE DIVISION CYPRESS, CA 90630 5700 WARLAND DRIVE 80009 TEKTRONIX INC 14150 SW KARL BRAUN DR BEAVERTON, OR 97077- - 0001 PO BOX 500 TK0588 UNIVERSAL PRECISION PRODUCT 1775 NW CORNELIUS PASS RD...
  • Page 30 Mechanicl Parts List Figure 16: Deskew Fixture Deskew Fixture Instructions...
  • Page 31 Mechanicl Parts List Replaceable Parts List Fig. & Tektronix Serial no. Serial no. Mfr. index part number effective discont’d code number Name & description Mfr. part number Deskew Fixture 16- - 1 129- - 1557- - 00 POST:GUIDE,DESKEW,FEMALE,SMX.IGS,STAINLESS STEEL TK0588 129- - 1557- - 00...
  • Page 32 Mechanicl Parts List Deskew Fixture Instructions...