User Manual P7240 4 GHz 5X Active Probe 071-0759-03 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.
CopyrightE 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 priviledges reserved. Tektronix, Inc., P.O. Box 500, Beaverton, OR 97077 TEKTRONIX, TEK, and SureFoot are registered trademarks, and TekConnect, SureToe, and KlipChip are trademarks of Tektronix, Inc.
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.
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. To Avoid Fire or Personal Injury Connect and Disconnect Properly. Connect the probe output to the measurement instrument before connecting the probe to the circuit under test.
General Safety Summary Safety Terms and Symbols 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. Terms on the Product. These terms may appear on the product: DANGER indicates an injury hazard immediately accessible as you read the marking.
Table of Contents General Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Contacting Tektronix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v v vi Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TekConnect Interface . . . . . . . . . . .
Table of Contents List of Figures iv Figure 1: P7240 Probe featuring the TekConnect interface 1 Figure 2: Connecting and disconnecting the probe . . . . . . . 2 Figure 3: Probe functional check connections . . . . . . . . . . . 13 Figure 4: Dynamic and offset limitations . . . . . . . . . . . . . . . 16 Figure 5: Waveform distortion from ground lead length . . 18 Figure 6: Ground Lead Equivalent Circuit . . . . . . . . . . . . . . 19 Figure 7: Low-inductance grounding . . . . . . . . . . . .
Preface This is the User Manual for the P7240 probe. This manual provides operating information, specifications, and a replaceable parts list. Related Manuals If you need to do a performance verification or make internal adjustments to your probe, refer to the P7240 4 GHz Active Probe Service Manual, Tektronix part number 071-1056-XX. The manual is a printable pdf file, and is available on both the Tektronix website and the Optional Applications CD, Tektronix part number 063-3376-XX.
Preface 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 Email: techsupport@tektronix.com 1-800-833-9200, select option 3* 1-503-627-2400 6:00 a.m. - 5:00 p.m. Pacific time * vi This phone number is toll free in North America.
Product Description The Tektronix P7240 is a 4 GHz (probe only), 5X active FET probe. The P7240 has a low input capacitance (1 pF) and high input resistance (20 kΩ), which minimize circuit loading over a wide bandwidth range. The small profile and low-mass head of the P7240 make probing dense circuitry by hand fast and easy. The accessory tips and adapters included enable the P7240 to be used on a wide variety of circuit architectures.
Product Description When the probe is connected, the oscilloscope reads EEPROM information from the probe, identifying the device and allowing the appropriate power supplies to be powered on. The preamp inputs on the oscilloscope are electrostatic discharge protected by remaining grounded until a valid TekConnect device is detected.
Product Description Options The following options are available when ordering the P7240 probe: H Option D1 - Calibration Data H Option C3 - 3 years Calibration Service H Option D3 - 3 years Calibration Data (requires Option C3) H Option R3 - 3 years Extended Warranty P7240 4 GHz 5X Active Probe User Manual 3
Product Description 4 P7240 4 GHz 5X Active Probe User Manual
Features and Accessories The P7240 is provided with several features and accessories designed to make probing and measurement a simpler task. To familiarize yourself with these items and their uses, refer to Table 1. Table 1: P7240 features and standard accessories Feature/Accessory Description Probe head assembly. The probe head is designed for ease of use and high performance. Its small size makes it easy to handle in tight areas.
Features and Accessories Table 1: P7240 features and standard accessories (Cont.) Feature/Accessory Description Installing the push-in probe tip. Attach the push-in probe tip by aligning the tip into the probe tip socket and pushing the tip in until it is seated. Either end of the tip may be used. Do not force the tip. Also, be careful not to poke yourself with the sharp probe tip. To remove the tip, gently grab the tip with small pliers, and pull the tip out. SureToe probe tip (4 ea).
Features and Accessories Table 1: P7240 features and standard accessories (Cont.) Feature/Accessory Y-lead adapter Description Y-lead adapter (2 ea). Use the Y-lead adapter to extend the physical reach of the probe and ground when necessary. The Y-lead adapter accepts any of the probe tips or adapters, and can be pushed directly onto 0.025 inch squarepins. When selecting the grounding connection, maintain as short a ground path as possible. Refer to page 18 for more information.
Features and Accessories Table 1: P7240 features and standard accessories (Cont.) Feature/Accessory Description Customizable ground lead (5 ea). This ground lead wire can be bent or cut shorter. NOTE: To ease insertion into the ground socket of the probe, cut the tip of this ground lead wire at a 30 to 60 degree angle. Customizable ground lead To maintain signal fidelity while probing, use as short a ground path as possible. Refer to page 18 for more grounding information.
Features and Accessories Table 1: P7240 features and standard accessories (Cont.) Feature/Accessory Description Low-inductance ground pogo pin (10 ea). Use the low-inductance ground pogo pin to substantially reduce ground lead inductance. Because the pogo pin simply touches the ground reference, you can easily move the probe to different points on the circuit under test. To attach, press the pogo pin into the probe head ground socket.
Features and Accessories Table 1: P7240 features and standard accessories (Cont.) Feature/Accessory Description Antistatic wrist strap. When using the probe, always work at an antistatic work station and wear the antistatic wrist strap. Tektronix part number: 006-3415-04 Plastic accessory box. Use the plastic box to store the probe accessories when not in use. Tektronix part number: 006-7164-00 Instrument case.
Features and Accessories Table 2 lists the optional accessories you can order for your P7240 probe. Table 2: P7240 optional accessories Accessory Description SureFoot probe tip. The SureFoot tip is an integral probe tip and miniature guide that enables fault-free probing of fine-pitch SMD packages. Attach SureFoot tips the same way as the push-in probe tips. Three models of SureFoot tips are included with the probe and can be used with any of the socketed accessory leads. SF501.
Features and Accessories Table 2: P7240 optional accessories (Cont.) Accessory Description SMA-to-probe tip adapter. Use the adapter to connect the probe to SMA cables. The adapter includes a 50-ohm SMA terminator. Tektronix part number: 015-0678-00 IEEE1394 Adapter. The IEEE1394 Adapter allows you to probe signals on the bus, external to system enclosures, without disturbing system operation. The adapter maintains a balanced 55-ohm signal path and can be used in both single-ended and differential modes.
Functional Check A functional check may be performed using the PROBE COMPENSATION connections on the front panel of the oscilloscope. See Figure 3. Figure 3: Probe functional check connections 1. Connect the probe to a TekConnect receptacle on the oscilloscope. 2. Set the oscilloscope to display the appropriate probe channel. 3. Using a ground lead and SMT KlipChip, connect the probe ground to the outer ring of the PROBE COMPENSATION connector on the oscilloscope. 4.
Functional Check NOTE. Now is a good time to perform a probe calibration routine from your instrument. 6. Disconnect the probe tip from the oscilloscope, and ground the probe tip. (Connect the KlipChip to the probe tip.) 7. With the probe offset set to 0.0 V, the oscilloscope display should be at the ground reference. 8. Set the oscilloscope volts/division to 500 mV. 9. Adjust the probe offset. The displayed waveform should vary between approximately +1.0 V and - 1.0 V.
Configuration The P7240 provides the oscilloscope with the probe model number, serial number, and attenuation factor. When connected to an oscilloscope with a TekConnect interface, display readouts are corrected for the probe attenuation factor, the instrument input is set to 50 Ω, and the coupling is set to DC. The probe offset control is controlled by the oscilloscope. Probe Offset The probe offset is adjustable to permit operation within the linear range of the probe.
Configuration NOTE. The P7240 has a ±5.0 V offset range. The linear operating range is ±2.0 V. See Figure 4. If cursors are used on a TekConnect interface oscilloscope, the zero reference will be at the probe offset voltage. Nonoperating range (+30 V maximum nondestructive input voltage ) +7.0 V +5.0 V +5.0 V +2.0 V 0V Maximum AC signal amplitude Maximum offset range - 2.0 V - 5.0 V - 5.0 V - 7.
Operating Basics Please follow these operating guidelines to get optimum performance from your P7240 probe. Handling the Probe Exercise care when using and storing the P7240. The probe and cable are susceptible to damage caused by careless use. Always handle the probe using the compensation box and probe head, avoiding undue physical strain to the probe cable, such as kinking, excessive bending, or pulling. Visible dents in the cable will increase signal aberrations.
Operating Basics Ground Lead Length When you are probing a circuit, you should always use as short a ground lead as possible between the probe head and circuit ground. The series inductance added by the probe tip and ground lead can result in a resonant circuit; this circuit may cause parasitic ringing within the bandwidth of your oscilloscope. Refer to Figure 5.
Operating Basics R source Probe R in 20 kΩ V source Probe C in 0.85 pF L gl (Ground Lead) Figure 6: Ground Lead Equivalent Circuit Ringing and rise time degradation can be masked if the frequency content of the signal degradation is beyond the bandwidth of the oscilloscope. You can determine if ground lead effects may be a problem in your application if you know the self-inductance (L) and capacitance (C) of your probe and ground lead.
Operating Basics 20 P7240 4 GHz 5X Active Probe User Manual
Helpful Hints Follow these helpful hints to make probing easier and noise free. Low-inductance Grounding Placing a ground plane on top of a package being probed can minimize ground lead length and inductance. See Figure 7. Figure 7: Low-inductance grounding Attach a small piece of copper clad on top of the package and connect it to the package ground connection. Use the low-inductance ground lead provided with the P7240 to keep the ground lead length as short as possible.
Helpful Hints This method is very useful when making many measurements on the same package. Using a ground plane on the package makes probing the package easier and avoids adding unnecessary ground lead length and distortion. SureFoot Grounding If you cannot use the recommended low-inductance grounding method, you may ground the probe to the package under test using a SureFoot adapter. Refer to Figure 8.
Appendix A: Specifications These specifications apply to a P7240 probe when used with a TDS7404 oscilloscope. The probe and oscilloscope must first be allowed to warm up for 20 minutes before measurements are taken. Specifications CAUTION. To prevent damage to the probe or circuit under test, do not apply voltages beyond the nondestructive input voltage range to the probe. Table 3: Warranted electrical specifications DC Attenuation Accuracy (probe only) 0.
Appendix A: Specifications Table 4: Typical electrical characteristics (Cont.) Input Resistance 20 kΩ at DC (See Figure 9) Input Capacitance 0.85 pF @100 MHz Offset Range --5.0 V to +5.0 V DC Offset Drift 150 V/°C or less at output of probe 0.
Appendix A: Specifications - 10 - 12 - 14 - 16 Gain dB - 18 - 20 - 22 Gain = 20 Log - 24 Ꮛ Ꮠ V OUT V IN - 26 - 28 1 MHz 10 MHz 100 MHz 1 GHz 10 GHz Frequency Figure 10: Typical bandwidth 7.6 mm (0.300 in) 31.8 mm (1.250 in) 57.2 mm (2.250 in) 7.6 mm (0.300 in) 43.8 mm (1.725 in) 63.5 mm (2.500 in) 91.5 mm (3.
Appendix A: Specifications Table 5: Physical Characteristics Unit weight (probe only) 223 g (7.52 oz) Cable Length 1.3 meters (50 in) Table 6: Environmental characteristics Operating Temperature 0 °C to +40 °C (+ 32 to + 104 _F) The environmental exposure is the procedure stated in Tektronix Design Standard 062-2847-00 for Class 5 equipment.
Appendix B: User Service This section details the maintenance for the P7240 probe. Inspection and Cleaning To prevent damage to probe materials, avoid using chemicals that contain benzine, benzene, toluene, xylene, acetone, or similar solvents. Do not immerse the probe or use abrasive cleaners. Dirt may be removed with a soft cloth dampened with a mild detergent and water solution, or isopropyl alcohol.
Appendix B: User Service 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 antistatic bag or wrap to protect it from dampness. 3. Place the probe into the box and stabilize it with light packing material. 4.
Appendix C: Replaceable Parts This section contains a list of replaceable parts for the P7240 probe. Use this list to identify and order replacement parts. Parts Ordering Information Replacement parts are available from or through your local Tektronix, Inc. service center or representative. Changes to Tektronix instruments are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest circuit improvements.
Appendix C: Replaceable Parts Using the Replaceable Parts List The tabular information in the Replaceable Parts List is arranged for quick retrieval. Understanding the structure and features of the list will help you find the information you need for ordering replacement parts. Item Names In the Replaceable Parts List, an Item Name is separated from the description by a colon (:). Because of space limitations, an Item Name may sometimes appear as incomplete. For further Item Name identification, U.S.
P7240 4 GHz 5X Active Probe User Manual 010-0642-00 016-1879-01 -2 Tektronix part no. 12-- 1 Fig. & index no. Serial no. Effective Dscont Figure 12: P7240 replaceable parts 1 1 1 Qty CASE,STORAGE:PLASTIC,W/FOAM PROBE, FET ACT:>4 GHZ,5X,1PF,TDS SERIES 12345 name & description 2 80009 80009 Mfr. code 016-1879-01 010-0642-00 Mfr. part no.
8 32 Figure 13: P7240 standard accessories 1 7 10 2 3 4 11 5 9 6 Appendix C: Replaceable Parts P7240 4 GHz 5X Active Probe User Manual
1 1 016-1772-10 016-1773-10 016-1774-00 ---------- 196-3482-XX 016-1315-00 206-0364-XX 006-7164-00 006-3415-04 071-0759-XX -3 -4 -5 -6 -7 -8 -9 - 10 P7240 4 GHz 5X Active Probe User Manual - 11 1 2 1 1 1 1 1 1 1 131-5638-11 1 Qty -2 Serial no. Effective Dscont 196-3456-00 Tektronix part no. 13-- 1 Fig. & index no. MANUAL,TECH:USER,P7240 STRAP,WRIST:3M TYPE 2214, ADJUSTABLE,6 FT COILED CORD BOX,PLASTIC:4.625 X 2.875 X 1.
34 7 Figure 14: P7240 optional accessories 1 6 2 3 4 5 Appendix C: Replaceable Parts P7240 4 GHz 5X Active Probe User Manual
1 1 SF501 SMK4 067-0422-00 015-0678-00 679-5027-00 063-3376-XX --- 3 --- 4 --- 5 --- 6 --- 7 1 1 1 1 1 SF502 1 Qty --- 2 Serial no. Effective Dscont SF503 Tektronix part no. 14-- 1 Fig. & index no.
36 Manufacturer TEKTRONIX INC GENERAL TOOL & SUPPLY CO Mfr. Code 80009 TK0623 2705 NW NICOLAI ST 14150 SW KARL BRAUN DR PO BOX 500 Address CROSS INDEX - MFR.
