Keysight 42941A Impedance Probe Kit
Contents
1. DUT Measurement Before performing DUT measurement open and short compensation should be done as described in the previous sections DUT Measurement Using Pin Probe When measuring implemented circuits mounted devices and printed circuit patterns use the pin probe DUT Measurement Using Pin Probe 42941 a0j0307 The pin of the pin probe is replaceable Replace it when damaged or dirty Adjusting Pin to GND Gap The gap between the pin and the GND contact is adjustable for DUT ranging from 0 5 mm to 13 5 mm To adjust the gap release the screw fastening the GND contact and then rotate the contact Figure 3 8 The probe is grounded 25 nominally Do not connect the probe directly to the circuit with a DC output If you connect a circuit with a DC output resulting in as follows It may cause the probe to be damaged It may influence the circuit to not perform correctly or may damage it entirely Measurement value will be incorrect In the case of measuring a circuit that could output a DC signal connect an 24 Chapter 3 DUT Measurement appropriate DC blocking capacitor to the probe Figure 3 8 Adjusting Pin to GND Gap Pin probe bottom view 42941 a0e0308 DUT Measurement Using Ground Lead Use the ground lead to ground the probe to a distant point Figure 3 9 When you attach the ground lead to the pin probe detach the ground contact refer to Figure 3 2 Figure 3 9 DUT Measurem2. INSTALLATION CATEGORY I POLLUTION DEGREE 2 INDOOR USE For more information on impedance measurement accuracy at the 3 5 mm port and additional error factor refer to the Impedance Analyzer Operation Manual 28 Chapter 4 5 Service This chapter provides information on servicing and proper maintenance KEYSIGHT TECHNOLOGIES Service Maintenance Maintenance An exploded view of the 42941A for parts identification is shown in Figure 5 1 and Figure 5 2 Do not disassemble any further than shown Maintenance consists principally of cleaning contacts and replacing worn or damaged parts Take special care when cleaning contacts To order parts use the Keysight Technologies part numbers listed in Table 5 1 and Table 5 2 If a faulty part is located in an assembly that cannot be disassembled order the next higher assembly or return the fixture to the nearest Keysight Technologies Sales Service Office for repair or replacement 30 Chapter 5 Service Maintenance Figure 5 1 Replaceable Parts part 1 of 2 Chapter 5 31 Table 5 1 Service Maintenance Replaceable Parts part 1 of 2 Reference Part No Qty Description Designator 1 42941 60001 1 PROBE 2 42941 65001 1 CHASSIS 3 42941 24001 1 COVER 4 42941 24015 1 KNOB 5 42941 24013 1 GND 6 1 CANTACT PROBE 7 42941 6000
3. Impedance Analyzer this kit allows impedance measurement and analysis in a wide frequency range of up to 110 MHz Its 1 5 meter cable for probing allows you to evaluate implemented circuits and mounted devices Figure 2 1 Product Overview 14 Chapter 2 Overview Functions Functions Figure 2 2 and Figure 2 3 show the names of the 42941A s parts and probe adapters respectively Figure 2 2 42941A Parts 1 Four terminal Pair Connection Block 2 Securing Screws 3 Probe 42941 a0e0202 Table 2 1 42941A Function No NAME FUNCTION 1 Four terminal Pair Connects the 42941A to the Impedance Analyzer Connection Block 2 Securing Screws Secures the 42941A to the Impedance Analyzer 3 Probe Attaches to various probe adapters for measurement Chapter 2 15 Overview Functions Figure 2 3 Probe Adapters 4 3 5 mm Short 5 3 5 mm Load 6 Pin Probe 42941 0203 2 2 Probe Adapters 8 BNC Adapter 9 Clip Lead 7 Ground Lead No NAME FUNCTION 4 3 5 mm Short A short device used for the adapter setup 5 3 5 mm Load A load device 50 Q used for the adapter setup 6 Pin Probe Attached to the probe to measure implemented circuits mounted devices and printed circuit patterns 7 Ground Lead Attached to the pin probe to connect to the GND of the DUT 8 BNC Adapter Attached to the probe to measure devices and cables
4. to prevent injury Figure 3 1 Connecting Pin Probe Pin GND electrode 5 42941 0301 3 19 Connecting Probe Adapter Connecting Ground Lead Remove the screw fixing the ground contact to detach the contact Use the removed screw to attach the ground lead to the pin probe Figure 3 2 Connecting Ground Lead 42941 a0e0302 20 Chapter 3 Connecting Probe Adapter Connecting BNC Adapter Attach the BNC adapter to the 3 5 mm connector on top of the probe Figure 3 3 Connecting BNC Adapter 42941 0303 Connecting Clip Lead Attach the BNC adapter to the probe and then attach the clip lead to the adapter Figure 3 4 Connecting Clip Lead 42941 a0e0304 Chapter 3 21 Operation Fixture Compensation Fixture Compensation In an actual measurement a probe adapter is attached to the probe Fixture compensation is required for compensating residual impedance and admittance The fixture compensation includes OPEN and SHORT compensation measurements For more information on fixture compensation also refer to the Impedance Analyzer Operation Manual NOTE Generally there is no need to perform load compensation However if you have a suitable standard device and require extremely accurate measurement perform load compensation as needed The following procedure is for measurement of the compensation data with the 42941A Performi
5. 2 1 CONTACT ASSY 8 0515 1718 4 SCR M4X12 9 0515 0914 2 SCR MACH M3X0 5 10 42941 61602 1 RF CBL ASSY 11 1400 0719 4 CABLE TIE 12 0515 1718 4 SCR M4X12 3050 0893 4 WSHR FL 13 42941 61604 1 RF CBL ASSY 14 42941 24006 1 PLATE 15 42941 66501 1 BOARD 16 0515 1550 2 SCR M3 L 8 P H 17 42941 24005 1 BLOCK 32 Chapter 5 Service Maintenance Figure 5 2 Replaceable Parts part 2 of 2 Chapter 5 33 Table 5 2 Service Maintenance Replaceable Parts part 2 of 2 Reference Part No Qty Description Designator 1 42941 00601 1 COVER TOP 2 42941 40002 2 BUSHING 3 1253 0476 4 ADPT BNC SMB 4 3050 0067 4 WSHR FL MTLC 5 3050 0789 4 WSHR FL NM 6 42941 25002 2 SLEEVE 7 2950 0054 2 NUT HEX DBL CHAM 8 2190 0054 2 WSHR LK INTL T 9 0515 0914 2 SCR MACH M3X0 5 10 16047 40002 4 INSULATOR 11 42942 25006 1 GUIDE BNC 12 0515 1550 2 SCR M3 L 8 P H 13 42942 00603 1 COVER 14 42941 24003 2 GUIDE 15 0515 0914 2 SCR MACH M3X0 5 16 42941 00602 1 COVER BOTTOM 17 1460 2615 2 18 42941 24004 2 SHAFT 19 0510 0083 2 RTNR R 34 Chapter 5 This information is subject to change without notice Keysight Technologies 1999 2015 Edition 4 March 2015 KEYSIGHT III TECHNOLOGIES 42941 90010 www keysight com
6. 28 5 Maintenance sroine ie e asa 30 Contents 1 Installation Guide KEYSIGHT TECHNOLOGIES Table 1 1 Installation Guide Incoming Inspection Incoming Inspection Inspect the shipping container for damage If the shipping container or cushioning material is damaged it should be kept until the contents of the shipment have been checked for completeness and the 42941A has been checked mechanically and electrically The shipment should contain everything listed in Table 1 1 If the contents are incomplete or if there is mechanical damage or defect notify the nearest Keysight Technologies office If the shipping container is damaged or the cushioning material shows signs of unusual stress notify the carrier as well as the Keysight Technologies office Keep the shipping materials for the carrier s inspection Contents Description Keysight Part Number Qty Probe and Four terminal Pair Connection Block Pin Probe 42941 60002 Spare Pin Set includes 3 spare pins 42941 60004 3 5 mm Short 1250 2840 3 5 mm Load 0955 1105 Operation and Service Manual 42941 90010 BNC Adapter 1250 1787 1 Clip Lead 8121 0003 1 Ground Lead 04193 61629 1 Carrying Case 42941 60011 1 a Not furnished with Option 001 10 Chapter 1 Installation Guide Connecting the 42941A Connecting the 42941A Follow the steps below to connect the 42
7. 941A to the Impedance Analyzer Step 1 Join the 42941A four terminal pair connection block to the test connectors on the front panel of the Impedance Analyzer by gently matching the four BNC connectors and securing screws of the block with the test connectors and accessory mounting holes of the instrument until they come into complete contact Step 2 Turn the block s two fastening screws clockwise at the same time until the four terminal pair connection block is secured firmly to the instrument Figure 1 1 Connecting 42941A to Impedance Analyzer 42941a0j0101 Chapter 1 11 Figure 1 2 Installation Guide Serial Number Serial Number Keysight Technologies uses a two part ten character serial number that is stamped on the serial number plate Figure 1 2 attached to the bottom of the four terminal pair connection block The first four letters and one digit are the serial prefix and the last five digits are the suffix Serial Number Plate 12 Agilent Technologies Japan Ltd SER NO AK JP1KG12345 MADE INJAPAN 33 4287 a0j 048 Chapter 1 2 Overview KEYSIGHT TECHNOLOGIES Overview Product Overview Product Overview The 42941A is the impedance probe kit designed for the Impedance Analyzer When used with the
8. Keysight 42941A Impedance Probe Kit Operation and KEYSIGHT Service Manual TECHNOLOGIES NOTICE This document contains references to Agilent Technologies Agilent s former Test and Measurement business has become Keysight Technologies For more information go to www keysight com KEYSIGHT TECHNOLOGIES Notices The information contained in this document is subject to change without notice This document contains proprietary information that is protected by copyright All rights are reserved No part of this document may be photocopied reproduced or translated to another language without the prior written consent of Keysight Technologies Keysight Technologies Japan Ltd Component Test PGU Kobe 1 3 3 Higashikawasaki cho Chuo Ku Kobe shi Hyogo 650 0044 Japan Copyright 1999 2015 Keysight Technologies Japan Ltd Manual Printing History The manual s printing date and part number indicate its current edition The printing date changes when a new edition is printed Minor corrections and updates that are incorporated at reprint do not cause the date to change The manual part number changes when extensive technical changes are incorporated April 1999 Edition part number 42941 90000 September 1999 Edition 2 part number 42941 90010 December 1999 Edition 3 part number 42941 90010 March 2015 Edition 4 part number 42941 90010 Safety Summary The following general safety pr
9. ducing additional hazards do not install substitute parts or perform unauthorized modifications to the instrument Return the instrument to a Keysight Technologies Sales and Service Office for service and repair to ensure that safety features are maintained e Dangerous Procedure Warnings Warnings such as the example below precede potentially dangerous procedures throughout this manual Instructions contained in the warnings must be followed Dangerous voltages capable of causing death are presenting this instrument Use extreme caution when handling testing and adjusting this instrument Certification Keysight Technologies certifies that this product met its published specifications at the time of shipment from the factory Keysight Technologies further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology to the extent allowed by the Institution s calibration facility or to the calibration facilities of other International Standards Organization members IMPORTANT Warranty This Keysight Technologies instrument product is warranted against defects in material and workmanship for a period corresponding to the individual warranty periods of its component products Instruments are warranted for a period of one year Fixtures and adapters are warranted for a period of 90 days During the warranty period Keysight Technologies will at its option either repai
10. e practice condition or the like which is essential to highlight Contents 1 Installation Guide Incoming uhr a wale a 10 Connecting the 42941 Ae au as een i 11 Serial a a ne wees 12 2 Product Oyerview we os eS Sak od os ERS PN eS BE ESE Su 14 Functions a rane i e Poe BS 15 3 Operation Impedance Analyzer Sead Suwa Sow Soa nr ru 18 Adapter Setup icici cece nenn beech een he nn bated ne 18 Connecting Probe Adapter a ee teed OEE ENE ai 19 Connecting Pin Probe ur o een 19 Connecting Ground Lead conc paca seedy or ose dans eviews peur Nea Gee 20 Connecting BNC 41 21 Fixture Compensation ee TUT 22 Performing Fixture Compensation 22 DUT Measurement pees ON Soe sone Rete ED pe e 24 DUT Measurement Using Pin 24 DUT Measurement Using BNC Adapter 26 4 Specifications Specifications ss peine gue
11. ecautions must be observed during all phases of operation service and repair of this instrument Failure to comply with these precautions or with specific WARNINGS elsewhere in this manual may impair the protection provided by the equipment In addition it violates safety standards of design manufacture and intended use of the instrument Keysight Technologies assumes no liability for the customer s failure to comply with these requirements 42941A comply with INSTALLATION CATEGORY I and POLLUTION DEGREE 2 in IEC 1010 1 42941A are INDOOR USE product WARNING DO NOT Operate In An Explosive Atmosphere Do not operate the instrument in the presence of flammable gasses or fumes Operation of any electrical instrument in such an environment constitutes a definite safety hazard e Keep Away From Live Circuits Operating personnel must not remove instrument covers Component replacement and internal adjustments must be made by qualified maintenance personnel Do not replace components with the power cable connected Under certain conditions dangerous voltages may exist even with the power cable removed To avoid injuries always disconnect power and discharge circuits before touching them DO NOT Service Or Adjust Alone Do not attempt internal service or adjustment unless another person capable of rendering first aid and resuscitation is present DO NOT Substitute Parts Or Modify Instrument Because of the danger of intro
12. ent Using Ground Lead 42941a0j0309 Chapter 3 25 Figure 3 10 Figure 3 11 DUT Measurement DUT Measurement Using BNC Adapter The BNC adapter is used to measure I O terminals or cables that have BNC connectors It is also used as a mounting base for the alligator lead DUT Measurement Using BNC Adapter 42941 a0j0310 DUT Measurement Using Clip Lead Use the clip lead to measure devices with leads that are large or mounted on the circuit board DUT Measurement Using Clip Lead 42941a0j0311 26 Chapter 3 4 Specifications This chapter provides specifications of the 42941A test fixture KEYSIGHT TECHNOLOGIES Specifications Specifications Specifications Frequency Applicable Instruments Impedance Analyzer 40 Hz to 110 MHz Maximum Voltage 42 V peak max AC DC Output Impedance 25 Q Nominal DC coupled Safety Standards Operating temp 20 C to 75 C except four terminal pair connection Environment block 0 C to 55 C four terminal pair connection block humidity 15 to 95 RH wet bulb temp lt 40 C Non operating temp 40 C to 70 C Environment humidity lt 90 RH wet bulb temp lt 65 C Dimensions 350 W x 100 H x 280 D mm Includes carrying case Weight 2400g Four terminal pair connection block 1000g EN61010 1 1993 A2 1995 IEC61010 1 1990 A1 1992 A2 1995 CSA C22 2 No 1010 1 1992
13. idental or consequential damages whether based on contract tort or any other legal theory A d Assistance Product maintenance agreements and other customer assistance agreements are available for Keysight Technologies products For any assistance contact your nearest Keysight Technologies Sales and Service Office Addresses are provided at the back of this manual Safety Symbol General definitions of safety symbols used on the instrument or in manuals are listed below Instruction Manual symbol the product is marked with this symbol when it is necessary for the user to refer to the instrument manual Alternating current Direct current On Supply Off Supply In position of push button switch Out position of push button switch Frame or chassis terminal A connection to the frame chassis of the equipment which normally include all exposed metal structure This warning sign denotes a hazard It calls attention to a procedure practice condition or the like which if not correctly performed or adhered to could result in injury or death to personnel This Caution sign denotes a hazard It calls attention to a procedure practice condition or the like which if not correctly performed or adhered to could result in damage to or destruction of part or all of the product Note denotes important information It calls attention to a procedur
14. ng Fixture Compensation Attach the probe adapter to be used for your measurement and perform fixture compensation 1 Press Cal key to bring up the Calibration Menu 2 Press FIXTURE COMPEN key to bring up the Fixture Compensation Menu Performing Open Compensation 1 Attach the probe adapter to the probe but leave it disconnected from a device Figure 3 5 Performing Open Compensation Ground Lead BNC Adapter Clip Lead 42941 aoe0305 22 Chapter 3 Fixture Compensation 2 Press OPEN key to start the OPEN compensation data measurement When the OPEN compensation data measurement is completed the softkey label OPEN on OFF if it is off changes to OPEN ON off Performing Short Compensation 1 Put the probe adapter into the SHORTed state as shown in Figure 3 6 Use an appropriate device for shorting since no short device is supplied with the BNC adapter NOTE For short compensation we recommend using a short device with gold plated surfaces which provide stable contact resistance Figure 3 6 Performing Short Compensation Pin Probe Ground Lead BNC Adapter Clip Lead 42941 a0e0306 2 Press SHORT key to start the SHORT compensation data measurement When the SHORT compensation data measurement is completed the softkey label SHORT on OFF if it is off changes to SHORT ON off Chapter 3 23 Figure 3 7 CAUTION Operation DUT Measurement
15. r or replace products that prove to be defective For warranty service or repair this product must be returned to a service facility designated by Keysight Technologies Buyer shall prepay shipping charges to Keysight Technologies and Keysight Technologies shall pay shipping charges to return the product to Buyer However Buyer shall pay all shipping charges duties and taxes for products returned to Keysight Technologies from another country Keysight Technologies warrants that its software and firmware designated by Keysight Technologies for use with an instrument will execute its programming instruction when property installed on that instrument Keysight Technologies does not warrant that the operation of the instrument or software or firmware will be uninterrupted or error free Limitation Of Warranty The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by Buyer Buyer supplied software or interfacing unauthorized modification or misuse operation outside the environmental specifications for the product or improper site preparation or maintenance No other warranty is expressed or implied Keysight Technologies specifically disclaims the implied warranties of merchantability and fitness for a particular purpose Exclusive Remedies The remedies provided herein are buyer s sole and exclusive remedies Keysight Technologies shall not be liable for any direct indirect special inc
16. ress SETUP key to bring up the Adapter Setup Menu 6 Leave the 3 5 mm port of the 42941A open no connection There is no OPEN standard for the 42941A 7 Press PHASE COMP key to start the phase compensation data measurement About 1 minute later phase compensation data measurement is completed and the softkey label changes to PHASE COMP DONE 8 With nothing connected to the 3 5 mm port press OPEN key to start open data measurement When the open data measurement is completed the softkey label changes to OPEN DONE 9 Connect the SHORT to the 3 5 mm port 10 Press SHORT key to start the short data measurement When the short data measurement is completed the softkey label changes to SHORT DONE 11 Remove the SHORT from the 3 5 mm port of the 42941A Then connect the LOAD to the 3 5 mm port 12 Press LOAD key to start the load data measurement When the load data measurement is completed the softkey label changes to LOAD DONE 13 Press done key 18 Chapter 3 Operation Connecting Probe Adapter Connecting Probe Adapter Probe adapters are furnished with the 42941A to measure DUTs of various shapes and characteristics Attach the appropriate probe adapter for your DUT Connecting Pin Probe Attach the pin probe to the 3 5 mm connector top of the probe and insert the pin WARNING The pin is sharp and potentially hazardous to personnel When using or changing handle the pin probe with care
17. that have BNC connectors 9 Clip Lead Attached to the top of the BNC adapter by the probe to measure mounted lead components or large devices 16 Chapter 2 3 Operation This chapter describes the proper methods for setting up the Impedance Analyzer connecting the probe adapter fixture compensation with the 42941A and DUT measurement KEYSIGHT TECHNOLOGIES CAUTION Operation Impedance Analyzer Setup Impedance Analyzer Setup Before beginning measurements you should perform the adapter setup to extend the calibration plane from the surface of the four pair terminal to the tip of the probe Also refer to the operation manual of the Impedance Analyzer for more information on the adapter setting For adapter setup use the furnished short and load devices When handling the 42941A care must be taken not to give it any mechanical shock which may cause damage to the fixture Never give any mechanical shock to the probe Adapter Setup Connect the 42941A to the Impedance Analyzer as shown in Figure 1 1 and perform the adapter setup described below 1 More than 30 minutes warm up time is required after turning on the Impedance Analyzer 2 Press Cal key to bring up the Calibration Menu 3 Press ADAPTER key to bring up the Adapter Setup Menu should indicate current settings 4 Select PROBE 42941A When selected the softkey label will be underlined 5 P
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