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Deskew and Gain Cal Fixture Instructions

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Deskew Fixture Instructions

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Содержание 067-0484-02

Страница 1: ...P071702202 071702202 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 sa...

Страница 2: ...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 50...

Страница 3: ...verview 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...

Страница 4: ...Table of Contents ii Deskew Fixture Instructions...

Страница 5: ...tions 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 O...

Страница 6: ...General Safety Summary iv Deskew Fixture Instructions...

Страница 7: ...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 main...

Страница 8: ...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 Sta...

Страница 9: ...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 The probes are held in p...

Страница 10: ...sions 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 disc...

Страница 11: ...P6246 P6247 P6248 P6330 P7330 2 3 6 P6249 4 5 6 7 8 9 10 11 P7240 4 5 6 7 8 9 10 11 P7260 6 7 8 9 11 NOTE Be sure that the deskew fixture s pins are straight before use Take care not to bend the pins...

Страница 12: ...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 You can also install up to two single ended probes 7 Proce...

Страница 13: ...ithout Tektronix probe tips If single ended probes with tips are required go to the next section 1 Remove any probe tips from the probe 2 Slide the probe over the top of the SKEW ADJUST ground and pos...

Страница 14: ...rocedure to deskew P7260 single ended probe To deskew P6249 and P7240 single ended probes install the Tektronix probe tips 1 Install the guide posts and probe holders to the SKEW ADJUST probe holder p...

Страница 15: ...g procedure to provide probe tip contact pressure with the SKEW ADJUST solder pads See Figure 9 on page 10 a Pull back lightly on the probe holder assembly b While holding the probe holder assembly ba...

Страница 16: ...al Fixture Instructions 8 Deskew Fixture Instructions GAIN CAL postion SKEW ADJUST probe holder postion GAIN CAL probe holder postion SKEW ADJUST postion Figure 6 Alternate locations for guide posts a...

Страница 17: ...kew and Gain Cal Fixture Instructions Deskew Fixture Instructions 9 Solder pads G G Figure 7 P6249 P7240 or P7260 with tips P7260 P7260 Figure 8 P6249 P7240 or P7260 on each side of the fixture with t...

Страница 18: ...ngle 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 polari...

Страница 19: ...ixture Instructions 11 Deskewed probe Load balance probe Differential probe Figure 10 P6249 and P7240 load balance detail without tips Deskewed probe Load balance probe Differential probe Figure 11 P6...

Страница 20: ...mV for single ended probes If you do not see this approximate amplitude remove the probe and reinsert it or adjust it until the approximate amplitude is achieved Then continue with the deskew process...

Страница 21: ...our planned signal measurements Any change to the vertical scale after the deskew is complete can introduce a new attenuation level A change in the attenuator setting will give a slightly different si...

Страница 22: ...tion Instructions menu c 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...

Страница 23: ...djacent spring and guide post See Figure 13 on page 15 3 Slide the probe to allow the probe tips to contact the underside of the fixture s signal and ground square pins 4 Repeat steps 1 through 3 to c...

Страница 24: ...kew Fixture to Gain Cal on page 18 Figure 14 P6249 or P7240 without tips Use this procedure to Gain Cal P7260 single ended probe To Gain Cal P6249 and P7240 single ended probes install the Tektronix p...

Страница 25: ...ssure with the GAIN CAL solder pads See Figure 9 on page 10 a Pull back lightly on the probe holder assembly b While holding the probe holder assembly back slide the probe forward until the probe tips...

Страница 26: ...ignal path calibration SPC procedure See page 14 NOTE Probes with an attenuation factor of greater than 20X cannot be compensated Probes with 2 gain errors or 50 mV offset errors cannot be compensated...

Страница 27: ...e Cal button to display the vertical Probe Cal control window 3 Select the oscilloscope channel to which the probe is attached 4 Check the Probe Status readout H Initialized indicates that the probe h...

Страница 28: ...Deskew and Gain Cal Fixture Instructions 20 Deskew Fixture Instructions...

Страница 29: ...OMER SERVICE DEPT P O BOX 3608 HARRISBURG PA 17105 3608 06915 RICHCO 5825 N TRIPP AVE P O BOX 804238 CHICAGO IL 60646 0KB01 STAUFFER SUPPLY CO 810 SE SHERMAN PORTLAND OR 97214 4657 0KB05 NORTH STAR NA...

Страница 30: ...Mechanicl Parts List 22 Deskew Fixture Instructions 1 2 3 4 5 6 7 8 9 10 11 12 Figure 16 Deskew Fixture...

Страница 31: ...0176 00 4 348 0430 00 4 FOOT BUMPER PLASTIC POLYURETHANE BLACK 2K262 ORDER BY DESCRIPTION 5 211 1050 00 2 SCREW MACHINE 6 32 X 0 312 L PNH STL CAD PLT T15 0KB01 OBD 6 131 6562 00 1 CONN PCB USB SERIE...

Страница 32: ...Mechanicl Parts List 24 Deskew Fixture Instructions...

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