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HP 41941A Manual

HP 41941A Manual

Impedance probe kits
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HEWLETT
PACKARD
Improve Impedance Analysis
with an Impedance Probe
and an HP 4194A Analyzer
Increase Test Frequency
•
to 100 MHz
Perform In-Circuit Impedance
•
Measurements
Analyze Components with
•
+150V/+O.5A DC Bias
IMPEDANCE PROBE KITS
(FOR THE HP 4194A)
(I.Srn)
HP 41941A
(3.0rn)
HP 41941B
Technical Data April'86

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  • Page 1 HEWLETT (FOR THE HP 4194A) (3.0rn) PACKARD HP 41941B Technical Data April'86 Improve Impedance Analysis with an Impedance Probe and an HP 4194A Analyzer Increase Test Frequency • to 100 MHz Perform In-Circuit Impedance • Measurements Analyze Components with •...
  • Page 2 Expand Your Impedance Applications You can increase the number of applications covered with the HP 4194A Impedance/Gain-Phase Analyzer by using the HP 41941A/B Impedance Probe Kit. By combining both of these, you can increase the frequency range 0, R, C L, Q, to 100 MHz and measure impedance parameters like IZI, and more.
  • Page 3 Improve Quality with Accurate accurately. The HP 41941A/B is a grounded probe capable of measuring in-circuit impedance parameters Impedance Measurements up to such as I ZI-phase, R, C, and from 10 KHz to 100 MHz. 100 MHz. The quality and performance of your video/RF components and circuits can be greatly improved.
  • Page 4 The HP 4194A must have Ver. 2.2 Software when using the HP 41941A/B. 4194A Impedance/Gain-Phase Analyzer For more information, call your local HP sales office listed in the telephone directory white pages. Ask for the Electronic Instrument Department, or write to U.S.A. p.a.
  • Page 5 Agilent 41941 AIR Probe Impedance Agilent 4194A Note Operation • • • • • • • • • • • • • • • • • • • • • • • • • .. ' � :�:�:' Agilent Technologies...
  • Page 6 MANUAL CHANGES MANUAL IDENTIFICATION Agilent 41941A1B Impedance Probe Agilent 4194A Kit for Operation Note This e m ent contains i o n for correcting manual errors and for adapting the manual to newer instruments that contains tin g m a improvements or modifications not documented in the e xi use this s u p l em en t...
  • Page 7 HP 4194A "HP Change all information (firmware) version 4194 2.2" to "HP 4194A ROM (firmware version or a ". NOTE Manual change supplements are revt.ed .. onen ..
  • Page 8 Agilent 41941AIB Impedance Probe Kit for Agilent 4194A Operation Note Third Edition (Including Options 350 375) SERIAL NUMBERS This operation note applies directly to 41941As and 41941Bs with 2617J- prefixed serial numbers • . .. :�:{. Agilent Technologies Part No. 41941-90010 May 2000 Printed in Japan...
  • Page 9 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 the Agilent Technologies. Agilent Technologies Japan, Ltd.
  • Page 10 Keep Away From Live Circuits Operating personnel must not remove instrument covers. Component replacement and internal adjustments must be made by qualified maintenance personne1. 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.
  • Page 11 Technologies from another country. Agilent Technologies warrants that its software and fumware designated by Agilent Technologies for use with an instrument will execute its programmin g instruction when property installed on that instrument. Agilent Technologies does not w t that the arran operation of the instrument, or software, or fumware will be uninterrupted or error free.

  • Page 12: Table Of Contents

    TABLE OF CONTENTS Section Title Page 1. GENERAL INFORMATION 1-1. INTRODUCTION DESCRIPTION 1 -2. 1-3. SPECIFICATIONS 1-4. SAFETY CONSIDERATIONS COVERED BY TH IS MANUAL 1 -2 1-5. UNITS 1-6. OPTIONS 1-7. CONTENTS 1- 4 1-8. ACCESSORIES AVAILABLE 2. INSTALLATION 2-1 . INTRODUCTION INITIAL INSPECTION 2-2.

  • Page 13: General Information

    SECTION 1 GENERAL INFORMATION INTRODUCTION 1-1. This operating note provides the information necessary to use the 41941 A/B Impedance Probe Kit with the 4194A Impedance/Gain- Phase Analyzer. Refer to the 4194A's Opera­ ting Manual for specific 4194A operating procedures. DESCRIPTION 1-2.

  • Page 14: Description

    4194A being used. CONTENTS 1-7. Table 1-2 li s t s the contents. Table 1-2. Co HP Part Number Description Probe Assembly Section 41941-65001 calibration standard 5012 calibration 41941-65002 PN 41941-65003 calibration standard PN 04193-21008...
  • Page 15 Note are furnished with th kinds of p e 41941 A/B. The pin which comes as to furnished standard is used for o n nec ti ng p ro b e a d ap ers and calibration pin is standards when making ge a l purpose measurements.
  • Page 17 Minimum (usable) 126uVrms (Opt Minimum (selectable) 350) 154uVrms (Opt 375) at setting -65dBm Resolution digits for V unit or and dBV units (41941A) Flatness +1dB/-1.6dB +1dB/-3.0dB (41941 B) 15dBm setting 0.2dB for more than 5dBm 0.02dB (15dBm - OSC setting)
  • Page 18 Table 1-3. Specifications (Sheet 3 of 3) Measurement Range Highest Resolution: Range Resolution Parameter O.Hl 121. to 1 IYI. 1]...l S to 1]...l S -180 0 to 0.01 0 1800 nH to 1 H 10pH 10fF 100uF 0.000 1 0.001 0.1 to 1000 0.01 Measurement Accuracy:...
  • Page 19 41941A/B Accuracy (!), >- 100mH 10mH lOOp H 100kn l OpS 10fF 10pH lOOpS 10kn 100fF 100nH lOOn 10mS 10nH lOOmS 100pF I nF 100mn 10pF IOOnF 10nF IOOpF (mn) o.s+otc(us) O.5.F+otc(\I5) lOOM Test Frequency (Hz) Figure (sheet 1-3. Impedance Measurement Accuracy...
  • Page 21 (depends on D): Accuracy 0.2<D�5 D�0 5<D ZaCR) ( % Za(R) (%) cose ±Rm· Z Za(X) (%) can be calculated as R/X, R/(2xTTxfxLs) or Rx2xTTXfxCs can be calculated as tan- (X/R), tan- xfxLs/R) or tan-1 (1 /(Rx2x TT xfxCs» (% ) Za(R)= A+(B/ I Rm I +Cx Rm I )x1 00 Za(X)= A+(B/ I...
  • Page 22 Accuracy (depends 0�0.2 0.2<0 (1+D) where A+(B/I ZII + Cx 1 ZII)x100 (%) 2xnxfxLm, f in Hz where 1 ZII is frequency L. A, obtained Lm is measured Band a r e from the preceeding g r Accuracy (depends 0�0.2 0.2<0 (1+0) where...
  • Page 23 OUT, The voltage the v ltag monitor displays the total voltage across across the residual impedance (ty pically 0.250 H for option 350, and 0.3750 10nH option 375) of the probe. Monitor 1-4. HP Figure 41941 A V 1-12...
  • Page 24 4uA) (SHORT) A is obtained from the g raph above. monitor The current level displays the total rrent throug h the DUT and O.27pF) through the stray capacitance (typically of the Current 1 -5. HP 41941 Monitor A 1-13...
  • Page 25 OPT 350 1.26 1.54 100UV) Accuracy ±(A(% of rea (MED or LONG) or 100UV) (SHORT) ±((A+10)(% of reading) Accuracy is obtained from the graph above. The voltage level monitor displays the total voltage across the OUT and across the residual impedance (typically 0.250 10nH for option 3 5 0 0.3750 10nH...
  • Page 26 4UA) (MED or LONG) or Accuracy ±((A+10)(% of reading) 4UA) (SHORT) graph. obtained from the monitor OUT and current level displays the total current through through (typically O.27pF) of the probe. the stray capacitance 1-7. HP Figure 41941 Current Monitor Accuracy 1-15...

  • Page 28: Accessories Available

    Table Accessories Available (Sheet 2 of 2) 1-4. HP 1 B Binding Post Fixture 16093B Test fixture for connecting common axial and radial lead components. Three bind­ post terminals are located on the ter­ below. minal deck shown The maximum de bias that can be applied...

  • Page 29: Installation

    4194A can be used. When bias supplied from an external dc power supply is used, connect the power sup­ ply's output to 41941A/B's DC BIAS INPUT connector. Note that the outer conductor of the BIAS INPUT connector is grounded.

  • Page 30: Storage Environment

    In an model number and the full serial number. Note you ever n to return the 41941A/B servicing. HP r e com me that you t em performance can be verified n your 4194A also so that s...

  • Page 31: Operation

    SECTION 3 OPERATION 3-1. INTRODUCTION WARNINGS, CAU­ This section provides the information necessary to use the 41941A/B. and Notes are given throughout, and they should be followed to insure operator TIONS, safety and servicaebility of the unit. Note For detailed information on 4194A operation, refer to the s Operation Manual .

  • Page 32: Offset

    3-2-2. Offset Offset compensates for the residual impedance and stray admittance at the calibration plane. The stray admittance and the residual impedance of the probe must be offset. Note The probe pin or test fixture must be configured the same as will be for per­...

  • Page 33: Test Signal Level And Output Impedance

    OUT's. probe d a pt s are listed in Table 3-2. Table 3-2. Furnished Probe Ad a pte rs HP Part Number Ad a p t er BNC A d a p t e r 04193-61152 Component Adapter...

  • Page 35: Performance Test/Operation Check

    4194A and 4194A/B must be the s Without a 4194A, t h is performance test cann rm e d be pe rf Operational checks are provi d e d to check the 41941A/B's operation after repairs h a If p e bee made, if a 4194A not available.

  • Page 36: Calibration Cycle

    4-4. CALIBRATION CYCLE conditions 41941 A/B r riodic p erformance verification. ng on under which the 41941 is used, e.g., environmental conditions frequency of use, the AT LEAST ONCE A e should be ked with the pe orma e test described here YEAR.
  • Page 37 � Figure 4-1. Impedance Measurement Accuracy Test Setup EQUIPMENT: Impedance/Gain-Phase Analyzer HP 4194A Probe Type Calibration Box 16345A PROCEDURE: follows. Connect 41941A/B to the 4194A and set 4194A's control as FUNCTION PROBE with Z SWEEP SINGLE SWEEP MODE TIME INTEG...
  • Page 38 2. Calibrate the 4194A with the s on, and 50n calibration standards. Steps 2-1 through describes the calibration p ed ure. you don't need an explanation for the procedure, go to st p 3. 1) Connect su standard to the probe. 2) Press COMPEN, 'more 1/3', 'more...

  • Page 40: Probe Operation Check

    3. Connect the oscillator output to 41941A or B TO OUTPUT SINGLE connector, 41941A or B's shortest (white) cable to oscilloscope's CHAN A, the lon g est (black) cable to CHAN B as shown in Figure 4-2. Leave the probe tip open.
  • Page 41 80mVpp (75mVpp and 95mVpp), and the amplitude of the trace on CH 100mVpp. trace is less than N o t e Limits parentheses units only. 41941A/B Option 6 fails, If the he check tep 4 or troubleshoot the 41941 A/B.
  • Page 42 PERFORMANCE TEST RECORD Hewlwtt-Packard Tested by Model 41941_ Date Impedance Probe Kit Serial Number Test Minimum Actual Maximum Frequency [Hz] Resistor 10.00 -6.2 10 000.000 3.55 -3.55 31 622.777 -3.2 100 000.000 -1.7 -970m 970m 316 227.766 -1.7 -970m 970m 000 000.000 -1.7 -970m...
  • Page 43 PERFORMANCE TEST RECORD 1.0kn 10000.000 -7.3 4.19 -4.19 31 622.777 I Z I -3.6 -2.06 2.06 I ZI 100 000.000 -1.8 -1.03 1.03 316 227.766 -1.8 -1.03 1.03 -1.8 000 000.000 -1.03 1.03 3 162 277 .660 -1. 9 -1.09 1.09 -2.2 10 000 000.000...

  • Page 44: Manual Changes

    SECTION 5 MANUAL CHANGES 5-1. INTRODUCTION This section contains information for adapting this manual to instruments to which its con­ tents do not directly apply. The following paragraphs explain how to adapt this manual to older instruments which have a serial prefix/number lower than that given on the title page. 5-2.

  • Page 45: Introduction

    SECTION 6 SERVICE 6-1. INTRODUCTION This section provides the information required to service the 41941A/B Impedance Probe. Included are Schematics an d Replac b le Parts Lists. 6-2. SCHEMATICS AND REPLACEABLE PARTS Figure 6-1 shows the s c hemati c di a gr a m of 41941 A/B.
  • Page 46 �------- --- ----- - - - - --, PROBE r---------l � ""M ""'� TO REFERENCE _________ CHANEL INPUT DC: BIAS INPUT ' L J _____ L._�----------------- .. re 6-1. Schematic Diagram Parts the P r obe Assembly Table 6-1. Electrical Replaceable Ref.
  • Page 47 Part Number Description Ref. Desig. 41941-04001 Cover Top (41941 A Opt 350) 41941-04011 Cover Top (41941A Opt 375) Cover Top (41941B Opt 350) 41941-04003 41941-04013 C ove Top (41941 B Opt 375) 0 12 BNC A s s em bly (4194A side)
  • Page 50 Figure 6-4. Replaceable Accessories Table 6-4. Re e Accessories Description Ref. Part Number OTY. Desig. 41941-65002 Calibration Standard on Calibration 41941-65001 Standard 41941-65003 OS Calibration Stand andard) 16095-60012 Spare Pin Set (s 04193-60153 Spare Pin Set (N-type) 04193-60151 Spare Clip Set Ground Lead 04193-61629 04193-61152...
  • Page 51 41941·90010 © Copyright Agilent Technologies, Inc. 1989,1998,2000 Printed in Japan 5/2000 .. �:: : �: Reorder No. 41941·90010...

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