User Manual P7225 2.5 GHz 10X Active Probe 071-1187-01 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.
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 trademarks of Tektronix, Inc. TEKPROBE and SureFoot are registered trademarks and SureToe, TekConnect, TEKPROBE, and KlipChip are trademarks of Tektronix, Inc.
WARRANTY Tektronix warrants that the systems that it manufactures and sells, (excluding customer-supplied equipment), will be free from defects in materials and workmanship for a period of one (1) year. The warranty period shall begin on the date of installation or one (1) month after the date of shipment, whichever is earlier.
Table of Contents General Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . v Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Contacting Tektronix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii vii viii Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TekConnect Interface . . . . . . . . .
Table of Contents List of Figures ii Figure 1: P7225 Probe featuring the TekConnect Interface 1 Figure 2: Connecting and disconnecting the probe . . . . . . . 2 Figure 3: Probe functional check connections . . . . . . . . . . . 15 Figure 4: Dynamic and offset limitations . . . . . . . . . . . . . . . 18 Figure 5: Typical effects of using a probe tip adapter . . . . . 21 Figure 6: Waveform distortion from ground lead length . . 22 Figure 7: Ground lead equivalent circuit . . . . . . . . . . .
Table of Contents List of Tables Table 1: P7225 features and standard accessories . . . . . . . . 5 Table 2: P7225 optional accessories . . . . . . . . . . . . . . . . . . . 12 Table 3: Warranted electrical specifications . . . . . . . . . . . . . 29 Table 4: Typical electrical characteristics . . . . . . . . . . . . . . 29 Table 5: Physical characteristics . . . . . . . . . . . . . . . . . . . . . . 33 Table 6: Environmental characteristics . . . . . . . . . . . . . . . .
Table of Contents iv P7225 2.
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.
Preface This is the User Manual for the P7225 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 P7225 2.5 GHz Active Probe Service Manual. The manual is a printable pdf file, and is available on both the Tektronix website and the Optional Applications CD.
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 * viii This phone number is toll free in North America.
Product Description The Tektronix P7225 is a 2.5 GHz, 10X active probe. The P7225 has a ≤0.8 pF input capacitance and a high input resistance (40 kΩ), to minimize circuit loading over the specified bandwidth. The small profile and low-mass head of the P7225 make probing dense circuitry by hand fast and easy. The accessory tips and adapters included enable the P7225 to be used on a wide variety of circuit architectures.
Product Description When the probe is connected, the host instrument reads EEPROM information from the probe, identifying the device and allowing the appropriate power supplies to be powered on. The preamp inputs on the host instrument 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 P7225 probe: H Option D1 — Calibration Data Report H Option C3 — 3 years Calibration Service H Option D3 — 3 years Calibration Data Report (requires Option C3) H Option R3 — 3 years Repair Service H Option C5 — 5 years Calibration Service H Option D5 — 5 years Calibration Data Report (requires Option C5) H Option R5 — 5 years Repair Service P7225 2.
Product Description 4 P7225 2.
Features and Accessories The P7225 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. WARNING. To avoid injury, use care when handling accessories with sharp tips. Table 1: P7225 features and standard accessories Feature/Accessory Ground socket Probe tip socket Description Probe head assembly. The probe head is designed for ease of use and high performance.
Features and Accessories Table 1: P7225 features and standard accessories (Cont.) Feature/Accessory Description Push-in probe tip. Use the push-in probe tip for general purpose probing by hand. Push-in probe tip The push-in probe tip may also be used with the other socketed leads and adapters. Tektronix part number: 131-5638-11 (1 set of 10) Push-in probe tip Installing the push-in probe tip.
Features and Accessories Table 1: P7225 features and standard accessories (Cont.) Feature/Accessory Description Three-inch ground lead. Use the three-inch ground lead for general probing. The socketed end of the lead may be connected to any of the probe tips and adapters or fitted onto 0.025 inch square pins. Three-- inch ground lead To attach the ground lead, press and rotate the lead pin connector into the ground socket on the probe head. The lead may be removed by pulling the pin out by hand.
Features and Accessories Table 1: P7225 features and standard accessories (Cont.) Feature/Accessory Description Customizable ground lead. You can bend or shorten this ground lead wire. Customizable ground lead 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. To maintain signal fidelity while probing, use as short a ground path as possible. Refer to page 21 for more grounding information.
Features and Accessories Table 1: P7225 features and standard accessories (Cont.) Feature/Accessory Description Square pin socket. The square pin socket is ideal for use with signal/ground pairs on 0.100 inch squareheader pins. Attach the socket by gently pressing it into the ground socket on the probe head. Square pin socket Be sure to use the stabilization notch whenever possible to avoid slipping and damaging the probe or circuitry under test.
Features and Accessories Table 1: P7225 features and standard accessories (Cont.) Feature/Accessory Description Cable marker bands Cable marker bands. Attach matching pairs of the marker bands onto the cable at the head and compensation box of each probe. The marker bands enable quick verification of which probe is connected to which instrument channel. Tektronix part number: 016-1315-XX (pkg of 10) Antistatic wrist strap.
Features and Accessories Table 1: P7225 features and standard accessories (Cont.) Feature/Accessory Description Accessory reorder sheet. Use the accessory reorder sheet as a quick guide for ordering accessories for your probe. The sheet provides photos and part numbers for identifying your accessories. Tektronix part number 001-1258-XX Calibration certificate. A certificate of traceable calibration is provided with every instrument shipped. P7225 2.
Features and Accessories Table 2 lists the optional accessories you can order for your P7225 probe. Table 2: P7225 optional accessories Accessory Description SureFoot adapter SureFoot probe adapter. The SureFoot adapter is an integral probe tip and miniature guide that enables fault-free probing of fine-pitch SMD packages. Attach SureFoot adapters the same way as the push-in probe tips.
Features and Accessories Table 2: P7225 optional accessories (Cont.) Accessory Description TekConnect Interface calibration fixture. The calibration fixture is required when a performance verification or adjustment is done on the probe. It provides connectors and test points for internal probe measurements. Tektronix part number: 067-0422-XX SMA-to-probe tip adapter. Use the adapter to connect the probe to SMA cables and for calibration and performance verification.
Features and Accessories Table 2: P7225 optional accessories (Cont.) Accessory Description Probe Calibration and Deskew Fixture. This fixture provides an edge source to time align (deskew) and to optimize host instrument gain and offset accuracy at the probe tip. Tektronix part number: 067-0405-XX Deskew Fixture. This fixture provides an edge source to time align (deskew) and to optimize host instrument gain and offset accuracy at the probe tip.
Functional Check A functional check may be performed using the PROBE COMPENSATION connections on the front panel of the host instrument. See Figure 3. NOTE. If you are not familiar with the operation of the host instrument, please refer to the user manual for the host instrument. Figure 3 illustrates the probe compensation connection for TDS6000 and TDS7000 instruments. Your instrument may differ from Figure 3. Please refer to your host instrument for the exact location of the probe compensation connection.
Functional Check 3. Using a ground lead and SMT KlipChip, connect the probe ground to the instrument ground on the host instrument. 4. Using a standard tip, hold the probe to the center conductor of the PROBE COMPENSATION output on the host instrument. 5. Press AUTOSET, or adjust the host instrument to display a stable calibration waveform. (You may need to adjust the probe offset to display the waveform.) NOTE. Now is a good time to perform a probe calibration routine from your instrument.
Configuration The P7225 provides the host instrument with the probe model number, serial number, and attenuation factor. When connected to a host instrument 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 host instrument. Probe Offset The probe offset is adjustable to permit operation within the linear range of the probe.
Configuration 6. Change the volts/division setting to the desired range, adjusting the offset to keep the trace on the zero reference level. NOTE. The P7225 has a ±10.0 V offset range. The input voltage linear operating range is ±4 V. See Figure 4. If cursors are used on a TekConnect Interface host instrument, the zero reference will be at the probe offset voltage. Nonoperating range (+30 V maximum nondestructive input voltage ) +14.0 V +10.0 V +10.0 V +4.
Operating Basics Please follow these operating guidelines to get optimum performance from your P7225 probe. Handling the Probe Exercise care when using and storing the P7225. 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. NOTE. To reduce the likelihood of creating signal aberrations, be careful not to dent, kink, pull or stretch the cable. CAUTION.
Operating Basics Input Linear Dynamic Range The probe head amplifier used by the P7225 has a limited linear operating range. The usable dynamic range is ±4.0 V however, to keep the input linearity error less than ±0.1%, you must limit the apparent signal input voltage to ±3.75 V. If you use the full signal input voltage of ±4.0 V, then the input linearity error increases to ±1.0%. Use the DC offset adjustment to maintain the probe within the dynamic range.
Operating Basics Test pulse without probe Probe with only short ground pogo pin 3 in Ground lead on square pin 1.7 in Y lead adapter with 2 SMT KlipChips Figure 5: Typical effects of using a probe tip adapter Ground Lead Length When you are probing a circuit, always use as short a ground lead as possible between the probe head and circuit ground.
Operating Basics Test pulse without probe Square pins on test board (no signal or ground length) Probe with only short ground pogo pin 1.7 in Y lead adapter 3.0 in Ground lead with SMT KlipChip Figure 6: Waveform distortion from ground lead length Ground Lead Inductance When you touch your probe tip to a circuit element, you are introducing a new resistance, capacitance, and inductance into the circuit. Refer to Figure 7 on page 23. 22 P7225 2.
Operating Basics Probe C in ≤0.8 pF V source L gl (ground lead) Figure 7: 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 host instrument. 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 24 P7225 2.
Helpful Hints Follow these helpful hints to make probing easier and noise free. Low-inductance Grounding Placing a ground plane on top of the IC package being probed can minimize ground lead length and inductance. See Figure 8. Figure 8: Low-inductance grounding Attach a small piece of copper clad wire on top of the IC package and connect it to the IC package ground connection. Use the low-inductance ground pogo pin or the customizable ground lead 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 IC package makes probing the IC 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 IC package under test using a SureFoot adapter. Refer to Figure 9.
Helpful Hints Probe Tip Test Points You can solder the push-in probe tip or a 0.025 inch square pin to a circuit, to be used as a temporary test point. See Figure 10. Solder the push-in probe tip onto a lead or pin with a low-power soldering iron. Press the probe head onto the push-in probe tip to make a measurement. Pull the probe head off of the push-in probe tip when you are done.
Helpful Hints 28 P7225 2.
Appendix A: Specifications The probe and host instrument 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 Output Zero ±10 mV or less at output of probe Rise Time (probe only) ≤140 ps DC Gain Accuracy (probe only) 0.
Appendix A: Specifications Table 4: Typical electrical characteristics (Cont.) Linearity ᐔ0.1% over a dynamic range of --3.75 V to + 3.75 V ᐔ1.0% over a dynamic range of --4.0 V to + 4.0 V Nondestructive Input Voltage Range --30 V to +30 V (DC + peak AC) Input Resistance 40 kΩ (See Figure 11 for impedance vs. frequency) Input Capacitance ≤0.8 pF DC Offset Drift 150 V/°C or less at output of probe 0.
Appendix A: Specifications Input Impedance 45 KΩ 110 ° 90 ° 40 KΩ Magitude (ohms) 50 ° 30 ° 30 KΩ 25 KΩ 10 ° 0° - 10 ° 20 KΩ - 30 ° 15 KΩ - 50 ° 10 KΩ - 70 ° 5 KΩ 0 KΩ 10 KHz Phase (degrees) 70 ° 35 KΩ - 90 ° 100 KHz 1 MHz 10 MHz 100 MHz 1 GHz Frequency (Hz) - 110 ° 10 GHz Magnitude Phase Figure 11: Typical input impedance and phase versus frequency P7225 2.
Appendix A: Specifications - 17 - 20 Gain dB - 23 Gain = 20 Log - 26 Ꮛ Ꮠ V OUT V IN - 29 - 32 10 MHz 100 MHz 1 GHz 10 GHz Frequency Figure 12: Typical bandwidth 32 P7225 2.
Appendix A: Specifications 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 (3.600 in) Figure 13: Probe head and compensation box dimensions Table 5: Physical characteristics Net weight 1.41 kg (3.1 lbs) Cable length 1.
Appendix A: Specifications Table 7: Certifications and compliances Category Standards or description EMC compliance This product has been reviewed to the conditions and provisions of Directive 89/336EEC for products of the EN61326 product family and determined to be exempt from the EMC directive. 34 P7225 2.
Appendix B: User Service This section explains the maintenance for the P7225 probe. Inspection and Cleaning CAUTION. To prevent damage to probe materials, do not use 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 75% isopropyl alcohol and water solution.
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 must have a carton test strength of at least 200 pounds (90.72 kg). 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.
Appendix C: Replaceable Parts This section contains a list of replaceable parts for the P7225 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.
P7225 2.5 GHz 10X Active Probe User Manual 010-- 0694-- XX 016-1879-XX -2 Tektronix part no. 14-- 1 Fig. & index no. Serial no. Effective Dscont Figure 14: P7225 replaceable parts 1 1 1 Qty CASE,STORAGE:PLASTIC,W/FOAM PROBE, FET ACT:2.5 GHZ,10X, ≤0.8 PF,TDS SERIES 12345 name & description 2 TK6108 80009 Mfr. code 016–1879–XX 010-- 0694-- XX Mfr. part no.
12 11 10 6 40 Figure 15: P7225 standard accessories 8 7 1 2 3 9 4 5 Appendix C: Replaceable Parts P7225 2.
196-3456-XX 196-3482-XX 131-5638-11 016-1772-10 016-1773-10 016-1774-XX ---------- 016-1315-XX 206-0364-XX 006-7164-XX 006-3415-XX 071-1187-XX -2 -3 -4 -5 -6 -7 -8 -9 - 10 - 11 - 12 Tektronix part no. 15-- 1 Fig. & index no. Serial no. Effective Dscont P7225 2.5 GHz 10X Active Probe User Manual 1 1 1 2 1 1 1 1 1 1 1 1 Qty MANUAL,TECH:USER, P7225 STRAP,WRIST:3M TYPE 2214, ADJUSTABLE,6 FT COILED CORD BOX,PLASTIC:4.625 X 2.875 X 1.
42 Figure 16: P7225 optional accessories 5 1 2 8 3 6 4 7 Appendix C: Replaceable Parts P7225 2.
SF501 SF502 SF503 SMK4 067-0422-XX 015-- 0678-XX 679-5027-XX 063-3376-XX -2 -3 -4 -5 -6 -7 -8 Tektronix part no. 16-- 1 Fig. & index no. Serial no. Effective Dscont 1 1 1 1 1 1 1 1 Qty SOFTWARE PKG:OPTIONAL APPLICATIONS SOFTWARE,CD-- ROM,TDS7000 SERIES CKT BD SUBASSY:1394 ADAPTER ADAPTER, PROBE:TIP,SMA 2 COMPACT SIZE,TERMINATED INTO 50 OHM TEST FIXTURE CALIBRATION FIXTURE ASSY:ECB TO TOP,P7000 SERIES TIP,PROBE:MICROCKT TEST,PKG OF 4 ADPTR,SUREFOOT:0.
44 VISION PLASTICS INC KENT H LANDSBERG CO TK6108 KASO PLASTICS INC 7X318 TK2565 FLAMBEAU AIRMOLD CORP 53718 XEROX CORPORATION EMULATION TECHNOLOGY INC 0HHL8 TK2548 TENSOLITE COMPANY 060D9 GENERAL TOOL & SUPPLY CO TEKTRONIX INC 80009 TK0623 Manufacturer Mfr.
