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Appendix C: Maintenance

44

P7350 5 GHz Differential Probe Instruction Manual

Preparation for Shipment

If the original packaging is unfit for use or not available, use the
following packaging guidelines:

1.

Use a corrugated cardboard shipping carton having inside
dimensions at least one inch greater than the probe dimensions.
The box should have a carton test strength of at least 200 pounds.

2.

Put the probe into an antistatic bag or wrap to protect it from
dampness.

3.

Place the probe into the box and stabilize it with light packing
material.

4.

Seal the carton with shipping tape.

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Содержание 071-1238-00

Страница 1: ... 071 1238 00 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 ...

Страница 2: ...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 TEK SureFoot and TekConnect are registered trademarks of Tektronix Inc and KlipChip is a trademark of Tektronix Inc ...

Страница 3: ...ations 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 conne...

Страница 4: ......

Страница 5: ...0 5 GHz Differential Probe Instruction Manual i Preface This is the Instruction Manual for the P7350 differential probe This manual provides operating information specifications and a replaceable parts list ...

Страница 6: ...ronix com Sales support 1 800 833 9200 select option 1 Service support 1 800 833 9200 select option 2 Technical support Email techsupport tektronix com 1 800 833 9200 select option 3 6 00 a m 5 00 p m Pacific 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 the Tektron...

Страница 7: ...ssories 9 Operating Basics 11 Input Voltage Limits 12 Common Mode Rejection 12 Probing Techniques to Maximize CMRR 13 Input Impedance and Probe Loading 14 Probe Grounding 15 Electrical Effects of Accessories 16 Reference 17 Problems with Single Ended Measurements 17 Differential Measurements 17 Extending the Input Leads 19 Extending the Ground Lead 20 Appendix A Specifications 21 Appendix B Perfor...

Страница 8: ...ads 20 Figure 12 Typical common and differential mode gain plots 24 Figure 13 Typical differential input impedance vs frequency 25 Figure 14 Typical bandwidth 25 Figure 15 Probe head and compensation box dimensions 27 Figure 16 Variable spacing adapter dimensions 28 Figure 17 Square pin adapter dimensions 28 Figure 18 TekConnect Interface Calibration Adapter 31 Figure 19 Probe Calibration Fixture ...

Страница 9: ...t before disconnecting the probe from the measure ment instrument 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 The common terminal is at ground potential Do not connect the common terminal to elevated voltages Do Not Operate Without Cover...

Страница 10: ... statements identify conditions or practices that could result in damage to this product or other property Terms on the Product These terms may appear on the product DANGER indicates an injury hazard immediately accessible as you read the marking WARNING indicates an injury hazard not immediately accessible as you read the marking CAUTION indicates a hazard to property including the product Symbol...

Страница 11: ...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 ...

Страница 12: ...Service Safety Summary viii P7350 5 GHz Differential Probe Instruction Manual ...

Страница 13: ... of accessories for connecting to surface mount devices and other components Figure 1 P7350 differential probe featuring the TekConnect interface TekConnect Interface The P7350 probe is powered through a TekConnect interface between the probe compensation box and the host instrument The TekConnect interface provides a communication path through contact pins on the host instrument Power signal offs...

Страница 14: ...l a valid TekConnect device is detected The TekConnect interface features a spring loaded latch that provides audible and tactile confirmation that a reliable connection has been made to the host instrument Slide the probe into the TekConnect receptacle on the host instrument The probe snaps into the receptacle when fully engaged See Figure 2 To release the probe from the host instrument grasp the...

Страница 15: ...the probe to a typical compensation connector Figure 3 Probe functional check connections 1 Connect the probe to the oscilloscope 2 Set the oscilloscope to display the probe channel 3 Connect the square pin adapter to the probe tip and connect the Y lead adapter to the square pin adapter Plug the SMT KlipChips into the Y lead adapter 4 Connect the SMT KlipChips to the PROBE COMPENSATION connection...

Страница 16: ...ground reference 8 Set the oscilloscope volts division to 500 mV 9 Adjust the probe offset The displayed waveform should vary between approximately 1 25 V and 1 25 V Options The following options are available when ordering the P7350 probe H Option D1 Calibration Data Report H Option D3 Calibration Data Report 3 years with Option C3 H Option C3 Calibration Service 3 years H Option D5 Calibration D...

Страница 17: ...ccessories connect to the probe tip through the square pin adapter The ground lead connects to the probe head through a slot in the side of the insulated probe housing WARNING Skin penetration hazard To prevent injury install the probe tip cover when the probe is not in use The probe tips are extremely sharp to ensure good contact and measurement integrity Probe tip cover The probe tip cover is sh...

Страница 18: ...inside the adapter are rated for 50 75 insertion cycles with the probe tip Replace the adapter after exceeding these limits to avoid unreliable operation Tektronix part number 016 1885 XX package of 4 Seated against probe head Square pin adapter 4 ea Push the square pin adapter onto the probe tip until it seats against the probe head Use the square pin adapter to connect the probe to other accesso...

Страница 19: ...d accessories or fitted onto 0 025 inch square pins Tektronix part number 196 3468 XX package of 2 Antistatic wrist strap When using the probe always work at an antistatic work station and wear the antistatic wrist strap Tektronix part number 006 3415 XX X lead adapter 2 ea The X lead adapter connects between accessories fitted with 0 025 inch pins such as the SMT KlipChip and Micro KlipChip adapt...

Страница 20: ... the probe accessories when not in use Tektronix part number 006 7164 XX Instrument case The instrument case protects the probe from harsh environments and provides room for storing optional accessories Tektronix part number 016 1879 XX Calibration certificate A certificate of traceable calibration is provided with every instrument shipped Accessory reorder sheet Use the accessory reorder sheet as...

Страница 21: ...tem enclosures without disturbing system operation The adapter maintains a balanced 55 Ω signal path and can be used in both single ended and differential modes Tektronix part number 679 5027 XX TekConnect interface calibration adapter The calibration adapter is required when a performance verification or adjustment is done on the probe It provides connectors and test points for internal probe mea...

Страница 22: ...Getting Started 10 P7350 5 GHz Differential Probe Instruction Manual ...

Страница 23: ...ectrical characteristics and access to dense circuitry and must be handled carefully Rough or careless use will likely damage the probe To avoid damaging the probe tips minimize your lateral pressure on the tips Always probe as straight onto the circuit perpendicular as possible The probe tips are extremely sharp to ensure good contact and measurement integrity WARNING The sharp probe tips pose a ...

Страница 24: ...with respect to earth ground without saturating the input circuitry of the probe A common mode voltage that exceeds the common mode signal range may produce an erroneous output waveform even when the differential mode specification is met For Specifications refer to page 21 Differential Mode Signal Range The differential mode signal range is the maximum voltage difference between the plus and minu...

Страница 25: ...pters However some probing tasks are made easier using accessories included with the probe The accessories shown in Figures 5 and 6 achieve a high CMRR by minimizing the distance between the probe head and the signal source Figure 5 Using the variable spacing adapter IC leads being probed TwinFoot adapter Square pin adapter Probe Insulated side of probe tip Conductive side of probe tip Figure 6 Us...

Страница 26: ...al sources The greater the source impedances and the higher the signal frequencies the more you must take these factors into account Input 0 1 pF 0 4 pF 0 4 pF 50 kΩ 50 kΩ Ground Input 130 Ω 130 Ω Figure 7 Typical probe input model As the impedance of the signal source on an input increases the more the probe loads the source and reduces the signal amplitude The frequency of the signal also affect...

Страница 27: ...used to a ground reference point only In most applications the common mode impedance to ground is greater than the differential impedance Adding the probe ground lead does not improve the high frequency performance of the measurement You can use the probe to take a differential measure ment regardless of whether or not the ground common is con nected There are some applications that may require a ...

Страница 28: ...ipples in frequency response These effects increase as the source impedance and the measured waveform risetimes decrease Refer to page 23 for input capacitance specifications when using the variable spacing and square pin adapters The recommended method for hands free probing is to use the probe only without adapters with a probe positioner such as a Tektronix PPM100 or PPM203B If you need a tip s...

Страница 29: ...isconnecting the probe ground reference lead Differential Measurements Devices designed to make differential measurements avoid the problems posed by single ended systems These devices include a variety of differential probes differential amplifiers and isolators The differential amplifier Figure 10 on page 18 is at the heart of any device or system designed to make differential measurements Ideal...

Страница 30: ...erential amplifier to reject the common mode signal is expressed as the Common Mode Rejection Ratio CMRR The CMRR is the differential mode gain ADM divided by the common mode gain ACM It is expressed either as a ratio or in dB CMRR ADM ACM dB 20 log ADM ACM CMRR generally is highest best at DC and degrades with increasing frequency Assessing CMRR Error Figure 12 on page 24 shows the CMRR of the P7...

Страница 31: ...fects on CMRR The lower the input impedance of the probe relative to the source impedance the lower the CMRR See Figure 12 on page 24 Significant differences in the source impedance driving the two inputs will also lower the CMRR Extending the Input Leads At times it may be necessary to extend the probe inputs with wires or a probe tip adapter When you do this you should minimize the lead lengths ...

Страница 32: ... Figure 11 Twisting the input leads Extending the Ground Lead Extending the ground lead will have little if any affect on your measurements In most circuits the ground path from the differential source has sufficiently high impedance to damp out any ringing caused by lead inductance ...

Страница 33: ...le 3 describe guaranteed performance within tolerance limits or certain type tested requirements Warranted characteristics that have checks in the Performance Verification section are marked with the n symbol Table 3 Warranted electrical characteristics Characteristic Description n Rise time probe only 100 ps 20 _C to 30 _C 68 _F to 86 _F 250 mV step n DC gain 0 16 2 corresponds to 6 25 X attenuat...

Страница 34: ... touch the probe with bare hands at nonoperating temperatures above 70 _C Allow sufficient time for the probe to cool before handling Typical Characteristics Typical characteristics Tables 4 and 6 describe typical but not guaranteed performance Table 4 Typical electrical characteristics Characteristic Description Bandwidth probe only DC to 5 GHz 3dB Rise time probe only 20 80 65 ps 20 _C to 30 _C ...

Страница 35: ...ly probe with variable spacing adapter Tektronix part number 016 1885 00 probe with square pin adapter Tektronix part number 016 1884 00 0 3 pF at 100 MHz 0 45 pF at 100 MHz 0 55 pF at 100 MHz Common mode input resistance DC coupled 50 kΩ 2 per side Common mode input capacitance 0 45 pF at 100 MHz per side Input impedance See Figure 13 Noise referred to input 46 nV Hz 100 MHz DC Offset Scale Accur...

Страница 36: ... of effective offset at probe tip output zero 62 5 mV effective at probe tip linearity error 1 0 of 5 0 V dynamic range 50 0 mV Figure 12 shows the typical common mode and differential gain of the probe The CMRR can be found by subtracting the common mode gain from the differential gain For example 80 dB CM gain equals approximately 64 dB CMRR 10 20 30 40 50 60 70 80 1 GHz Frequency 90 10 MHz 100 ...

Страница 37: ...ation results of a first order model of the probe input Frequency Hz 10 M Impedance Ω 100 k 10 k 1 k 100 10 100 M 1 G 1 M 10 G Figure 13 Typical differential input impedance vs frequency 10 Frequency 10 MHz 1 MHz 100 MHz 10 GHz 12 14 16 18 20 22 24 26 28 1 GHz Gain 20 Log ᏋVOUT VIN Ꮠ Gain dB Figure 14 Typical bandwidth ...

Страница 38: ...he traits do not have tolerance limits Table 5 Nominal electrical characteristics Input configuration Differential two inputs and with case ground Attenuation 6 25 X1 Input coupling DC Termination Terminate output into 50 Ω 1 All TekConnect host instruments recognize this gain setting and adjust the Volts Div setting to correspond to a normal 1 2 5 sequence of gains ...

Страница 39: ...m 3 60 in 1 725 in 1 25 in Dimensions probe head 59 mm 7 7 mm 5 1 mm 2 30 in 0 30 in 0 20 in Dimensions output cable 1 2 m 47 in Unit weight probe only 223 g 7 5 oz 31 8 mm 1 250 in 43 8 mm 1 725 in 63 5 mm 2 500 in 91 5 mm 3 600 in 63 5 mm 2 55 in 7 6 mm 0 300 in 5 08 mm 0 200 in 2 54 mm 0 100 in 2 286 mm 0 090 in Figure 15 Probe head and compensation box dimensions ...

Страница 40: ...mm 0 228 in 0 51 mm 0 020 in 2 90 mm 0 114 in 10 50 mm 0 412 in 3 60 mm 0 140 in Figure 16 Variable spacing adapter dimensions 5 80 mm 0 228 in 14 73 mm 0 615 in 9 40 mm 0 370 in 6 60 mm 0 260 in 2 13 mm 0 084 in 2 80 mm 0 110 in 4 62 mm 0 182 in 11 20 mm 0 442 in 4 45 mm 0 175 in 4 57 mm 0 180 in 8 15 mm 0 321 in Figure 17 Square pin adapter dimensions ...

Страница 41: ... for a list of the equipment required to verify the performance of your probe Table 7 Equipment required for performance verification Item description Performance requirement Recommended example1 Sampling Oscilloscope 20 GHz bandwidth Tektronix TDS8000 Sampling module head with extension cable 20 GHz bandwidth Tektronix 80E04 with 012 1568 00 cable Oscilloscope TekConnect interface Tektronix TDS74...

Страница 42: ...nana plug ends black 012 0039 00 Probe Calibration Fixture See page 33 067 0419 00 TekConnect Interface Calibration Adapter See page 31 067 0422 00 Adapter TekConnect to SMA TCA SMA Adapter SMA Male to Male 015 1011 00 Adapter SMA Male to BNC Female 015 1018 00 Adapter BNC Female to Dual Banana 103 0090 00 Adapter Square pin adapter 016 1884 00 Adapter Y lead adapter 196 3468 00 Adapters 2 KlipChi...

Страница 43: ...nt and the probe under test and provides connectors for internal probe measurements Figure 18 TekConnect Interface Calibration Adapter When the adapter is connected to the oscilloscope the adapter is identified as a valid calibration device However additional power supplies necessary to power the probe are not enabled until a TekConnect probe is connected to the adapter and identified by the oscil...

Страница 44: ...Offset GND Variable GND VAR Offset output select switch The offset output switch selects between ground and the offset voltage level from the oscilloscope Leave the switch in the ground position for the performance verification procedures The variable position is only used in the adjustment proce dures Offset voltage output Offset voltage The offset voltage of the probe is accessed through the BNC...

Страница 45: ...to connect to the fixture and are located on the front and back of the fixture The fixture is designed to be used with a probe positioner such as a Tektronix PPM203B Figure 19 Probe Calibration Fixture Using the Probe Calibration Fixture 1 Connect the fixture to the test circuit using an SMA cable 2 Connect the 50 Ω termination included with the fixture to the unused SMA connector 3 Insert and sec...

Страница 46: ...ibration Fixture test points 6 Verify that contact is made on both pins You may need to readjust the fine position and or pressure adjustment to make positive contact with the test points 7 Proceed with the specific test instructions Equipment Setup Use this procedure to set up the equipment to test the probe 1 Connect the probe calibration adapter to the oscilloscope 2 Connect the probe to the pr...

Страница 47: ...set switch to GND BNC SMA adapter Calibration adapter P7350 Probe BNC Cable Y lead adapter KlipChip adapters Square pin adapter Figure 21 Setup for the output offset voltage test 2 Set the offset switch on the calibration adapter to GND NOTE Leave the offset switch in the ground position for all of the performance verification checks 3 Set the multimeter to read DC volts 4 Verify that the output v...

Страница 48: ...of the DMMs 2 Set the voltage on each power supply to approximately 0 25 V 0 5 V total Record this source voltage as Vin1 Power supply TDS7404 Oscilloscope BNC to Dual Banana Adapter 50 Ω Precision termination Digital multimeter P7350 Probe Calibration adapter BNC SMA adapter Power supply Y lead adapter Black Red Digital multimeter KlipChip adapters Square pin adapter BNC cable Figure 22 DC Gain A...

Страница 49: ...Vout2 Vin1 Vin2 7 Verify that the gain is 0 16 2 8 Record the calculated gain on the test record Rise Time This procedure verifies that the probe meets rise time specifications Two rise times are measured the test system and the test system with the probe included The probe rise time is calculated using the two measurements 1 Connect the test equipment as shown in Figure 23 on page 38 CAUTION Use ...

Страница 50: ...to SMA adapter Sampling head extender cable SMA M to M adapter Calibration adapter Generator remote head Figure 23 Test system rise time setup 2 Set the CSA TDS8000 oscilloscope trigger to internal clock NOTE The CSA TDS8000 oscilloscope is used for taking the measurements in these procedures All references to oscilloscope adjustments refer to the CSA TDS8000 The TDS7404 oscilloscope is only used ...

Страница 51: ... edge measurement by using averaging if available Rise time is determined from the 10 and 90 amplitude points on the waveform Record the rise time as ts The following steps instruct you to assemble the test setup that includes the probe as shown in Figure 24 The system and probe rise time ts p that you measure in step 17 is used to calculate the probe rise time tp in step 18 7 Set the step generat...

Страница 52: ...ct calibration adapter Figure 24 Test system rise time setup with probe 12 Set the step generator control switch to on 13 On the TDS8000 expand the horizontal scale to help locate the step edge in step 14 then adjust horizontal range to 500 ps div while maintaining the edge view For a more stable measurement display turn averaging on 14 Using the probe positioner probe the DM test points on the pr...

Страница 53: ...averaging on 16 Adjust the oscilloscope horizontal positioning to place the rising edge of the signal so that it crosses the second vertical and center horizontal graticule lines 17 Use the oscilloscope measurement capability to display rise time Rise time is determined from the 10 and 90 amplitude points on the waveform Record the rise time as ts p 18 Calculate the probe rise time using the follo...

Страница 54: ...est record Probe Model Serial Number Certificate Number Temperature RH Date of Calibration Technician Performance test Minimum Incoming Outgoing Maximum Output offset voltage 10 mV ________ ________ 10 mV DC gain accuracy 0 1568 ________ ________ 0 1632 Rise time N A ________ ________ 100 ps ...

Страница 55: ...terior surfaces of the probe with a dry lint free cloth or a soft bristle brush If dirt remains use a soft cloth or swab dampened with a 75 isopropyl alcohol solution A swab is useful for cleaning narrow spaces on the probe Do not use abrasive compounds on any part of the probe CAUTION Avoid getting moisture inside the probe during exterior cleaning and use only enough solution to dampen the swab ...

Страница 56: ...g guidelines 1 Use a corrugated cardboard shipping carton having inside dimensions at least one inch greater than the probe dimensions The box should have a carton test strength of at least 200 pounds 2 Put the probe into an antistatic bag or wrap to protect it from dampness 3 Place the probe into the box and stabilize it with light packing material 4 Seal the carton with shipping tape ...

Страница 57: ...ektronix instruments are sometimes made to accommo date improved components as they become available and to give you the benefit of the latest circuit improvements Therefore when ordering parts it is important to include the following information in your order H Part number H Instrument type or model number H Instrument serial number H Instrument modification number if applicable If a part you ord...

Страница 58: ...n System This parts list is indented to show the relationship between items The following example is of the indentation system used in the Description column 1 2 3 4 5 Name Description Assembly and or Component Attaching parts for Assembly and or Component END ATTACHING PARTS Detail Part of Assembly and or Component Attaching parts for Detail Part END ATTACHING PARTS Parts of Detail Part Attaching...

Страница 59: ...Appendix D Replaceable Parts P7350 5 GHz Differential Probe Instruction Manual 47 1 2 3 Figure 26 P7350 replaceable parts ...

Страница 60: ...Tektronix part no Serial no Effective Dscont Qty 12345 name description Mfr code Mfr part no 26 1 010 0708 XX 1 PROBE ASSEMBLY SERVICE REPLACEMENT SERIALIZED 80009 010 0708 XX 2 200 4236 XX 1 COVER PROBE TIP 80009 200 4236 XX 3 016 1879 XX 1 CASE STORAGE PLASTIC W ANTISTAT FOAM TK6108 016 1879 XX ...

Страница 61: ...Appendix D Replaceable Parts P7350 5 GHz Differential Probe Instruction Manual 49 1 2 3 4 5 6 7 8 9 10 Figure 27 P7350 standard accessories ...

Страница 62: ...9 XX 1 LEAD GROUND GROUND LEAD PKG OF 2 196 3469 XX 4 016 1785 XX 1 ADAPTER DIFFERENTIAL PROBE PKG OF 4 80009 016 1785 XX 5 016 1884 XX 1 ACCESSORY KIT SQUARE PIN ADAPTER PKG OF 4 060D9 016 1884 XX 6 016 1885 XX 1 ACCESSORY KIT VARIABLE SPACER ADAPTER PKG OF 4 060D9 016 1885 XX 7 016 1886 XX 1 MARKER KIT ID CABLE MARKER BAND 2 EA VAR COLRS 80009 016 1886 XX 8 206 0364 XX 2 TIP PROBE MICROCKT TEST ...

Страница 63: ...Appendix D Replaceable Parts P7350 5 GHz Differential Probe Instruction Manual 51 1 2 3 4 Figure 28 P7350 optional accessories ...

Страница 64: ...scont Qty 12345 name description Mfr code Mfr part no OPTIONAL ACCESSORIES 28 1 067 0422 XX 1 CALIBRATION FIXTURE ASSY ECB TO TOP P7000 SERIES 80009 067 0422 XX 2 067 0419 XX 1 PROBE CALIBRATION FIXTURE 80009 067 0419 XX 3 679 5027 XX 1 CKT BD SUBASSY 1394 ADAPTER 80009 679 5027 XX 4 SMK4 1 TIP PROBE MICROCKT TEST PKG OF 4 80009 SMK4 ...

Страница 65: ... HOUSE BLVD SUITE 120 VANCOUVER WA 98661 26805 M A COM OMNI SPECTRA INC MICROWAVE CONNECTOR DIV 140 4TH AVE WALTHAM MA 02254 80009 TEKTRONIX INC 14150 SW KARL BRAUN DR PO BOX 500 BEAVERTON OR 97077 0001 TK0623 GENERAL TOOL SUPPLY CO 2705 NW NICOLAI ST PORTLAND OR 97210 TK2565 VISION PLASTICS INC 26000 SW PARKWAY CENTER DRIVE WILSONVILLE OR 97070 TK6108 KENT H LANDSBERG CO 27929 SW 95TH SUITE 101 W...

Страница 66: ...Appendix D Replaceable Parts P7350 5 GHz Differential Probe Instruction Manual 54 ...

Страница 67: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Tektronix P7350 ...

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