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HP 4262A User's Manual

1. 1 Connect sample battery observe polarity as illustrated Internal resistance of a battery can not be measured Batteries up to 40V are measured under no load conditions UNKNOWN If battery voltage exceeds 4V set DC BIAS to EXT GUARD Lcun Leot POT H cur OC BIAS DC BIAS Since the internal resistance of a battery is relatively low use the four terminal measurement configuration 3 25 Section II Model 4262 A Table 3 4 3 26 Table 3 4 Unusual Operating Indications Sheet 4 of 4 Indication Cause of trouble The measurement reading of sample depends on the level of measurement test signal applied When a sample for example an iron core inductor is measured in AUTO of CIRCUIT MODE the instrument repeats range selection and does not complete the meas urement depending upon level of test current used What to do Set LCR RANGE to MANUAL Manually settle the instrument on an appropriate range Indication When a capacitor is measured with de bias There are limitations to the permissible voltage applied an abnormal display occurs insulation resistance of a capacitor measured with dc bias See table below mm 100 0F 1000pr 10 00nF 100 00F f 10000 Permissible i insulation 30MQ 3000k2 300K2 30k82 30002 resistance Ri Note In 120Hz 10kHz measurement multiply range value by 10 1 10 Ri given in above table is applicabl
2. SELF TEST This pushbutton performs automatic check for checking the basic operation of Model 4262A If normal oper ation is confirmed PASS is displayed in LCR display If wrong performance is detected a display of FAIL appears See paragraph 3 5 for details ZERO Adjustment Controls These adjust ments provide proper compensation for cancelling stray capacitance and residual inductance which are present when a test fixture is mounted on the UNKNOWN terminals Connectors are kept open for cancelling stray capacitance and shorted for cancelling residual inductance DC BIAS Selector Switch This switch per mits selection of internal DC bias voltage applied to sample 1 5Vdc 2 2Vdc or 6 0Vdc When switch is set to EXT it is used to apply external bias voltage from rear DC BIAS input connectors OFF posi tion is selected if no bias voltage is nec essary UNKNOWN Terminals Consist of four terminals High current terminal Hcur High potential terminal Hror Low potential terminal Lror and Low cur rent terminal Lcur A five terminal con figuration is constructed by adding the GUARD terminal 8 A three terminal configuration is constructed by shorting High terminals and Low terminals together with shorting bars Under DC Bias opera tion the high terminals have a positive DC voltage with respect to LOW terminals GUARD Terminal This is connected to chassis ground of instrument and can
3. WARNING Dangerous voltages capable of causing death are present in this instru ment Use extreme caution when handling testing and adjusting Herstellerbescheinigung Hiermit wird bescheinigt da das Ger t HP 4262A digital LCR meter in bereinstimmung mit den Bestimmungen von Postverf gung 1046 84 funkentst rt ist Der Deutschen Bundespost wurde das Inverkehrbringen dieses Ger tes angezeigt und die Berechtigung zur berpr fung der Serie auf Einhaltung der Bestimmungen einger umt Anm Werden Me und Testgerate mit ungeschirmten Kabeln und i oder in offenen ee unter Beecher aiech an seiner dl eingehalten werden GER USCHEMISSION Lpa lt 70 dB am Arbeitsplatz normaler Betrieb nach DIN 45635 T 19 Manufacturer s Declaration This is to certify that this product the HP 4262A digital LCR meter meets the EN A frequency interference requirements of directive 1046 84 The German Bundespost has been notified that this equipment was put into circulation and was granted the right to Mr they nee product type for compliance with these requirements Note If test and measurement equipment is operated with unshielded cables and or used for measurements on open set ups the user must insure that under these operating conditions the radio frequency interference limits are met at the border of his premises aih Ak ACOUSTIC NOISE EMISSION Lpa lt 70 dB operator position p normal operation E per ISO 7779
4. The 4262A is ready for bench operation as shipped from the factory For bench operation a two leg instrument stand is used For use the instrument stands are de signed to be pulled towards the front of instrument 2 21 Installation of Options 907 908 and 909 2 22 The 4262A can be installed in a rack and be operated as a component of a measurement system Rack mounting information for the 4262A is presented in Figure 2 3 Section II Paragraphs 2 13 to 2 28 2 23 STORAGE AND SHIPMENT 2 24 Environment 2 25 The instrument may be stored or shipped in environments within the following limits Temperature 40 C to 75 C Humidity 6 dca dS es to 95 Altitude 222 322 50 000ft The instrument should be protected from temper ature extremes which cause condensation inside the instrument 2 26 Packaging 2 27 Original Packaging Containers and mat erials identical to those used in factory packaging _ are available through Hewlett Packard offices If the instrument is being returned to Hewlett Packard for servicing attach a tag indicating the type of service required return address model number and full serial number Also mark the container FRAGILE to assure careful handling In any correspondence refer to the instrument by model number and full serial number 2 28 Other Packaging The following general in structions should be used for re packing with com mercially available materials a
5. 2 This section provides the operating informa tion to acquaint the user with the 4262A LCR Meter Basic product features and characteristics measurement procedures for various applications an operational check of the fundamental electrical functions and operator maintenance information is presented in this section Operating cautions throughout the text should be carefully observed 3 3 PANEL FEATURES 3 4 Front and rear panel features for the 4262A are described in Figures 3 1 and 3 2 Description numbers match the numbers on the photographs Other detailed information for panel displays and controls are covered in the Operating Instructions paragraph 3 7 35 SELF TEST Basic Operating Check ANY INTERRUPTION OF THE PROTECTIVE GROUNDING CON DUCTOR INSIDE OR OUTSIDE THE INSTRUMENT OR DISCON NECTION OF THE PROTECTIVE EARTH TERMINAL IS LIKELY TOCAUSE THE INSTRUMENT TO BE DANGEROUS INTENTIONAL INTERRUPTION IS PROHIBITED WHENEVER IT IS LIKELY THAT THE PROTECTION OFFERED BY FUSES HAS BEEN IMPAIRED THE INSTRUMENT MUST BE MADE INOPERATIVE AND BE SECURED AGAINST ANY UNIN TENDED OPERATION BEFORE ANY OTHER CONNEC TION IS MADE THE PROTEC TIVE EARTH TERMINAL MUST BE CONNECTED TO A PROTEC TIVE GROUNDING CONDUCTOR 3 6 Functional operation of the Model 4262A should be confirmed by the SELF TEST switch before measuring samples of interest This test can be done under all conditions of FUNCTION and TEST SI
6. 220 to 260 milliseconds at 5335 Ki ain pn cat 2 Figure 1 1 Model 4262A and Accessories 1 1 Section I Table 1 1 Model 4262A Table 1 1 Specifications Sheet 1 of 4 COMMON SPECIFICATIONS Parameters Measured C D or Q 1 D L D or Q 1 D R ESR Loss measure ment can be negated by switch on internal board Display 3 1 2 Digit Maximum Display 1999 When D value is more than 10 max mum display is 199 Measurement Circuit Modes Auto Parallel and Series Measurement Terminals 5 terminal configura tion high and low terminals for both potential and current leads plus guard Range Modes LCR Auto and Manual up down DQ Auto and Manual step Measurement Frequencies 120 100 Hz 1kHz and 10kHz 3 Test Signal Level Normal level 1Vrms Low level 50mVrms parallel capacitance mode only Warm up Time 15 minutes Deviation Measurement When 2LCR key is de pressed the existing measured value is stored as a reference value and displayed value is offset to zero The range is held and deviation is dis played as the difference between the referenced value and subsequent re sult Deviation spread in counts from 999 to 1999 Offset Adjustment Stray capacitance and re sidual inductance of test jig can be compensated for as follows C up to 10pF eee Drup to TY Self Test Annunciates either Pass or Fail for performance in each of the five basic ranges DC
7. 34 OPTION 101 HP IB REMOTE CONTROL AND DATA OUTPUT INSTALLATION a Remove right side blind covers from rear panel Install connector board assembly P N 04262 66503 in the opening and mount with washers and nuts included with assembly Set the HP IB switch of SW1 on A23 board assembly from OFF to opposite position The A23 board is located on the right side third from front Connect cable assembly attached to A25 board between A23 and A25 HP IB option board assemblies P N 04262 66525 Install A25 in RED GREEN GUIDE option receptacle Plug flat cable assembly from connector board assembly P N 04262 66503 into A25 board assembly installed in RED GREEN GUIDE receptacle OPTION 101 IS NOT COMPATIBLE WITH OPTIONS 001 AND 004 Model 4262 A Section H Figure 2 4 8120 0350 Front Panel Assembly HN 04262 65004 Board Assembiy ver 04262 66523 DIN a E P N 04262 66524 or 04262 66623 5 Connect cable assembly as shown above Set CMP vom paratur of SW1 on A23 hoard P N 04262 66523 or 04262 66623 from OFF to opposite position Reinstall this board in socket with ORANGE RED guide Cable Assembiy PIN 8120 0360 RED YELLOW Connector Assembly Screw P N 5660 46203 P N 0520 0129 amp Connect one end of flat cable to A24 P N 04262 66524 board Install board in RED YELLOW GUIDE Top Cover Bottom Cover 1 Remove top and bottom covers 7 Plug f
8. 7 er ena LA Sackaro OPERATING AND SERVICE MANUAL MODEL 4262A LCR METER SERIAL NUMBERS This manual applies directiy to instruments with serial numbers prefixed 2514J With changes described in Section Vi this manual also applies to instruments with serial numbers prefixed 1710J 1739J and 2022J For additional important information about serial numbers see INSTRUMENTS COVERED BY MAN UAL in Section 1 COPYRIGHT YOKOGAWA HEWLETT PACKARD LTD 1977 9 1 TAKAKURA CHO HACHIOJI SHI TOKYO JAPAN Manual Part No 04262 90007 x Microfiche Part No 04262 90057 Printed JUN 1987 Table of Contents Model 4262 A TABLE OF CONTENTS Section Title Page Section Title Page I GENERAL INFORMATION 0c0e008 1 1 3 30 Terminal Configuration 3 10 i 1 Introduction sassssos Eee 1 1 3 32 Offset Adjustment c0000 3 10 1 4 Description NER ain 1 1 3 40 Option Operation e0000 3 27 1 8 Specifications os ne 1 7 3 42 Option 001 BCD Parallel Data 1 10 Safety Considerations 1 7 Qutp t as een sz 9 27 1 13 Instruments Covered by Manual 1 7 3 44 Output Data and Pin 1 18 Options ne 1 8 ASS gaMEn e ssossssosorso 3 27 1 20 Option 001 EEE 1 8 3 46 Alternate Output of LCR and 1 22 Option 004k selec vinstens 1 8 D Q Dates an errr 3 27 1 24 Option LOL 44 555454 wee 1 8 3 47 Output Timing 6 hisses dese es 3 27 1 26 Option O10 a eee os 1 8 3 48 Option 00
9. Bias Internal 1 5V 2 2V 6V Selectable at front panel Accuracy 5 External External DC bias connector on rear panel Maximum 40V Trigger Internal External or Manual GENERAL Operating Temperature amp Humidity 0 C to 55 C at 95 RHfto 40 C Power Requirements 100 120 220V 10 240V 5 10 48 66Hz 1 2 Power Consumption 55VA with any option Dimensions 426 W x 147 H x 345 D mm 16 3 4 x 5 3 4 x 13 3 4 Weight Approximately 8kg Std Model 4262A Section I Table 1 1 Table 1 1 Specifications Sheet 2 of 4 C D C Q MEASUREMENT 120Hz 1000pF 10 00nF 100 0nF 1000nF 110 004 F 100 04 F 1000 F I10 00m 1kHz 100 0pFl11000pF j10 00nF 100 0n 1000nF 10 004F 100 04Fi10004F 001 19 9 2 Ranges 0 05 1000 4 Ranges 10A 100uA 1ImA 10mA 40mA Same as wm Mode Fest signal level 1V Test signal level 50mV C Accuracy s At 120Hz IkHz At 10kHz C emeas U Mode _ Sameas tr Mode Tet sig leva 1V Du 20 1000102 counts e Ataoe A120 le ation on wenn emule ee e 1 Calculated from D value as a reciprocal number 2 Typical data varies with value of D and number of counts 3 amp of reading counts Cx is capacitance readout in counts This accuracy only applies for D values to 1 999 For higher D values refer to General Information 4 5 2 counts at 1kHz Accuracy applies over a temperature range of 23 C 5 C At 0 C to 55 C er
10. D range control is pushbutton selectable Quality factor Q is calculated as a reciprocal dissipation number from the measured D value Hence the Q readout display will skip some numbers when low dissipation samples are meas ured For example when the dissipation measured is 010 the quality factor display is 100 When dissipation is 009 the quality factor reading is 111 Q readings of 101 to 110 are not obtained On the high D measurement range the readout is displayed in 3 digits 3 17 ALCR MEASUREMENT 3 18 When many components of similar value are to be tested it is sometimes more practicable to measure the difference between the value of the sample and a predetermined reference value The ALCR function permits repetitive calculation of the difference between the reference and each in dividual sample and to display the result on the LCR DISPLAY When the 4LCR FUNCTION button is pressed the inductance capacitance or resistance value of the sample is stored in an internal memory The 4262A will now display the difference between the stored value and the meas ured value of a sample connected to UNKNOWN The LCR RANGE is automatically held in MANUAL for the duration of ALCR measurements if another pushbutton is inadvertently pressed the ALCR measurement function will be reset and will require reactivating 3 7 Section IH Model 4262A Figure 3 3 16061A Test Fixture This fixture facilitates easy measurement of gen
11. DQ LCR 13 17 14 18139 43415 19 jie 20 far 45 S Short Referenced to common pin 38 or 42 TTL Output sink current 30mA max O Open EXT TRIG Pin 46 ore ov i Measurement ee COMPARATOR lt END FLAG Pin 21 ov EENET Ga Decision Output EXT TRIG External Trigger T TTL output R Relay output Sectiondll Paragraphs 3 60 to 3 67 3 60 OPTION 101 HP IB 3 61 The 4262A Option 101 provides interface capabilities in accordance with IEEE STD 488 1975 recommendations 362 Connection to HP IB Controller The 4262A Option 101 can be connected to an HP IB Controller HP calculator via HP IB digital bus connector on the rear panel of the 4262A and the bus connector of the Bus I O card installed in calculator 3 63 HP IB Status Indicator The four LED lamps of the HP IB Status Indicator located below the LCR display show which HP IB condition the 4262A is in SRQ SRQ signal put on HP IB line from 4262A See paragraph 3 70 for details LISTEN 4262A is set to listen See paragraph 3 69 for details The 4262A is set to talk See paragraph 3 67 for details _ Remote The 4262A is remotely controlled See paragraph 3 71 for details TALK 364 LOCAL Switch This switch disables re mote control and enables setting measurement conditions by front panel controls pushbutton switches REMOTE lamp of HP IB status indicator turns off when LOCAL switch is depressed When Local Lock Out does not functi
12. LOR METER ees FARKAD Ca Sena B MAHA ar red UNE Stt YON P LEVEN RAH fete FA LINE ON OFF switch Tums instrument on and readies instrument for measurement Circuit Mode Indicator LED lamp next to equivalent measuring circuit being used lights Sample connected to UNKNOWN terminals 1 is measured in an equivalent circuit selected by FUNCTION 1 and CIRCUIT MODE switches and is indi cated by appropriate LED lamp Equivalent circuits are shown as electronic circuit sym bols at the left of indicator lamps Desired circuit parameter of component is meas ured in one of the following selected circuit modes Series inductance Trigger Lamp Turns on during sample measuring period Turns off during period when instrument is not taking measure ment or hold period There is one turn on and off cycle per measurement This lamp turns on and off repeatedly when TRIGGER 8 is set to INT Model 4262A LCR Display Inductance capacitance or resistance value including the decimal point and unit is displayed in 3 digit decimal number from 0000 to 1999 If the sample value exceeds 1999 in a selected range O F Over Flow appears in this display This display also shows PASS or FAIL when SELF TEST is performed D Q Indicator In a capacitance or induct ance measurement this indicator indicates which of D dissipation factor or Q quali ty factor is displayed in D Q display 6 In resistance measure
13. Output Lamp Results of comparison are indicated by LED lamps as follows HIGH measured value gt High limit IN Low limit lt measured value lt High limit LOW measured value lt Low limit LCR LIMIT CHECK Switch While this switch is depressed HIGH and LOW limit values set by LCR LIMIT switches 1 are displayed in LCR and D Q displays During this period three LCR decision output lamps are lit Comparator must be en abled display limits e Te as 7 fa rja i 4 5 6 3335 Model 4262A j Figure 3 42 Front Panel Features D Q LIMIT CHECK Switch While this switch is depressed HIGH and LOW limit values set by D Q LIMIT switches 6 are displayed in LCR and D Q displays During this period three D Q lamps of decision outputs are lit D Q Decision Output Lamp Results of comparison is indicated by LED lamps as follows HIGH measured value gt High limit IN Low limit lt measured value lt High limit LOW measured value lt Low limit D Q LIMIT Switch Two four digit switches provide HIGH and LOW limit values with which measured D Q value is compared Setting range is from 0000 to 1999 Frag Figure 3 43 Option 004 COMPARATOR Model 4262 A 7 COMPARATOR ENABLE Switch This switch enables the Option 004 to compare measured data with HIGH and LOW limits under a fixed range condition LCR or D Q RANGE switch set to MANUAL If LCR RANGE switch or D Q swi
14. RANGE be set to MANUAL and to hold the range when measuring multiple samples having almost the same value Range hold operation will somewhat shorten measurement time Note Series resistance of electrolytic capacitors in ductors or transformers can be measured in series R ESR measurement mode In these cases the number of digits is sometimes reduced On the other hand resistance can of course be indirectly measured with the C L FUNCTION and cal culated from one of the following equations Rs D wCs Cs D measurement Rs wLs D Ls D measurement Rs wLp sn Lp D measurement The above relationships are graphically shown in Figure 3 6 CAUTION DO NOT CONNECT A CHARGED CAPACITOR EXCEEDING 40V DIRECTLY TO THE UNKNOWN TERMINALS AS A DUT CAUTION NEVER APPLY A DC VOLTAGE DIRECTLY BETWEEN THE UNKNOWN H AND L TERMINALS WiTHOUT PROPER PROTECTION AGAINST A POSSIBLE HARMFUL CURRENT DC VOLTAGE MUST NOT BE APPLIED TO THE L TERMINAL WITH RESPECT TO GROUND Figure 3 7 General Component Measurements Sheet 3 of 3 Section HI Model 4262A Figure 3 7 Junction Capacitance Measurement FO OC BAS Cannector Setup The figure above is a typical test setup used for measuring base collector junction capa citance Cob of an NPN transistor For this measurement test leads or fixture may be user designed If external DC bias is not necessary arrangement and procedures associated with this
15. Switchable at rear panel no sign outputs Format A SFFT amp N NNNE NN SF4N NNGRYLF Format B SFFT N NNNE NN CRYLF SF N NN CRXLF SEFT L Test Frequency Measurement Equivalent Circuit Measurement Status SF Measurement status Option 010 100Hz test frequency instead of 120Hz ACCESSORIES AVAILABLE 16061A Test fixture direct coupled 5 terminal Two kinds of inserts are included for components with either axial or radial leads Usable on all ranges of 4262A 16062A Test cable with alligator clips 4 termi nal Useable for low impedance meas urements Measurement range at 1kHz is L lt 2H C 2 200nF and RS 10kN For L and C measurements these ranges increase by x10 at 120 100 Hz and decrease by same factor at 10kHz 16063A Test cable with alligator clips 3 termi nal Useable for high impedance meas urements Measurement range at 1kHz is L23mH CS 10uF and R2 2002 For L and C measurement these ranges increase by x10 at 120 100 Hz and decrease by same factor at 10kHz biak measurement D or Q Section I Model 4262A Table 1 2 Table 1 2 General Information Measurement Times typical ESR Equivalent Series Resistance For a 1000 count measurement on a low Measurement loss component on a fixed range Following tables show ESR measure ment range for capacitors and inductors Test Frequency Function Meas Time FR ES E wm 1kHz 10kHz C L 220 260ms 2 2 5 siti quiets R 1
16. Wrap instrument in heavy paper or plastic If shipping to Hewlett Packard office or service center attach tag indicating type of service required return address model number and full serial number b Use strong shipping container A double wall carton made of 350 pound test material is adequate 0 Use enough shock absorbing material 3 to 4 inch layer around all sides of instrument to provide firm cushion and prevent movement inside container Protect control panel with cardboard d Seal shipping container securely e Mark shipping container FRAGILE to ensure careful handling f In any correspondence refer to instrument by model number and full serial number 2 3 Model 4262 A Section H Figure 2 2 Australia New Zealand United Kingdom OPTION 901 OPTION 900 SX _ oo Earth en Neutral Re SS LY m es Neutral Line Plug BS1363A 250V Plug NZSS 198 AS C112 250V Cable HP 8120 1351 Cable HP 8120 1369 ULS Canada Neutral i ae Tee Line Plug CEE VH 250V Plug NEMA 5 15P 125V 15A Cable HP 8120 1689 Cable HP 8120 1378 OPTION 902 European Continent OPTION 903 Earth Neutral OPTION 905 Any country OPTION 906 Switzerland Line Plug CEE 22 Vi 250V Plug SEV 1011 1959 24507 Type 12 250V Cable HP 8120 1396 Cable HP 8120 2104 Neutral Denmark OPTION 917 India Republie of S Africa OPTION 912 Ground earth ee Neutral gt Ka Neutral Plug DHCR 107 220V Plu
17. an electrical ground safety ground at the power outlet The power jack and the mating plug of the power cable meet International Electrotechnical Commission IEC safety standards Do not operate the instrument in the presence of flammable gases or fumes Op eration of any electrical instrument in such an environment constitutes a definite safety hazard 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 power cable connected Under certain conditions dan gerous 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 introducing additional hazards do not install substitute parts or perform any unauthorized modification to the instrument Return the in strument to a Hewlett Packard Sales and Service Office for service and repair to ensure that safety features are maintained DANGEROUS PROCEDURE WARNINGS Warnings such as the example below precede potentially dangerous procedures throughout this manual Instructions contained in the warnings must be followed
18. current applied Then hold the range 3 Recommended inductance ranges and maximum bias currents are Current In 1kHz 10kHz measurement multiply range value by 1 10 1 100 CAUTION DC BIAS OVER 40 VOLTS MUST NOT BE AP PLIED TO EXTERNAL DC BIAS INPUT CON NECTOR Figure 3 9 External DC Bias Circuit Sheet30f3 3 22 Model 4262A Section HI Table 3 4 Table 3 4 Unusual Operating Indications Sheet 1 of 4 Indication Cause of trouble A Same sample sometimes shows quite different values between PRL and SER CIRCUIT MODE measurements B The decimal point moves and measure ment unit changes Indieation The displayed value fluctuates on minimum capacitance maximum inductance or maximum resistance ranges in either PRL or SER circuit modes UNKNOWN HGUR BC BIAS GUARD iror H POT OC aias cur Metai Case A and or B may occur in the following cases Resistance of low loss inductor or capacitor being measured in R FUNCTION Inductance of lossy inductor or capacitance of lossy capacitor being measured in L or C FUNCTION What to do A Do not set CIRCUIT MODE to AUTO Set CIRCUIT MODE to a PRL or SER setting that shows a valid display B Set LCR RANGE to MANUAL Manually settle the instrument onan appropriate range Cause of trouble Here are some of the reasons why this happens A A large size sample is being measured B A high vo
19. externally triggering the instru ment by inputting an external trigger signal TRIGGER SWITCH on front panel should be set to EXT Figure 3 2 Rear Panel Features Model 4262A xk Two HIGH side terminals and two LOW side terminals should be connected with the shorting strap for each configuration of the UNKNOWN terminals When the UNKNOWN terminal configuration is not appropriate for example shorted C or open L display will show FAIL 1 be cause they result from different causes FAIL 2 or FAIL 3 are rarely displayed io rego L N H 690 mm f 1910 Setting change required is only the underlined switch setting If FAIL is displayed check the UNKNOWN ter minal configurations as follows 1 2 3 a ae eae poe so a a ESA ina Hror and the two LOW side terminals Lcur Lror are properly shorted That short or open conditions properly exist between HIGH and LOW side terminals That GUARD terminal is isolated open from both of HIGH and LOW terminals Section II If FAIL is still displayed under the above condi tion notify the nearest Hewlett Packard office with information detailing which combination of settings show FAIL During SELF TEST other controls are automati cally set as follows CIRCUIT MODE SER when FUNCTION is set to L or R ESR PRL when FUNCTION is set to C W cc er ee ei pre D LCR RANGE og ees Saat eked Sake MANUAL D Q RANGE 65 605 64 6
20. general measurement of both axial and vertical lead components HP 16062 A Test Leads with alligator clips useful for low inductance high capacitance or low resistance less than 10k2 measure ments HP 16063A Test Leads with alligator clips for general component measurement and especially useful for high impedance a age i i measurements HP P N 5060 4017 Extender Board used for 4262A troubleshooting GUO GUJR 3 13 3089 4017 1 9 Section I Model 4262A Table 1 4 Table 1 4 Recommended Test Equipment R ded me Critical Specifications Frequency Counter Frequency Range 40Hz to 10kHz HP 53800A Sensitivity 50m Vrms min w 5306A Capacitance Standard Capacitance Values 100pF 1000pF 10nF GR Type 1413 P A See para 4 3 100nF 1000nF and 10uF GR Type 1417 Resistance Standard Resistance Values 1kQ 10kQ 100kN and GR Type 1443 Y P A See para 4 3 10MQ HP 5300A P A Inductance Standard Inductance Value 100mH See Para 4 3 GR Type 1482 L Voltage Range 1V to 10V DC Voltmeter Bandwidth 10MHz min HP 1740A Vertical Sensitivity 5m V div Horizontal Sweep Rate Lus div Oscilloscope Signature Analyzer m HP 5004A HP 547A T HP P N T 04262 87002 Service Kit Signature Analysis Test Board DUT Box Comprises L C and R components whose HP 16361A P A values are ca
21. the polarity of Cx and C1 must be taken into consideration CATUION NEVER SHORT BETWEEN Hror AND LOW TERMINALS WHEN Ri IS SMALLER THAN 1kQ MAKE SURE THAT UNKNOWN CAPA CITOR IS NOT DEFECTIVE BEFORE CON NECTING TO INSTURMENT TO AVOID HARMFUL SURGE CURRENT WHICH MAY FLOW THROUGH INTERNAL CIRCUITRY WHEN A HIGH VOLTAGE DC BIAS IS SUDDENLY APPLIED IT IS RECOM MENDED THAT DC BIAS BE GRADUALLY INCREASED FROM A LOWER VOLTAGE Note Ripple or noise of external de bias source should be as low as possible The low frequency noise of bias source should be less than 1mVrms for a TEST SIGNAL level of 50mV LOW LEVEL and 30mVrms for 1V Figure 3 9 External DC Bias Circuit Sheet 1 of 3 Model 4262A 2 Minimum values for both C1 de blocking capacitor and R1 are given in table below Note Insulation resistance for Cx must be greater than a certain minimum value Refer to Table 3 4 for unusual operating indications a adio 1000pF 10 00nF 100 0nF 1000nF 10 004 F In 1kHz 10kHz measurement multiply both range value and value of Cl by 1 10 1 100 If the calculated value of C1 is less than 0 014 F use 0 01uF capacitor Note DC withstand voltage for C1 capacitor must be greater than dc applied voltage E Also observe polarity of capacitor C1 with respect to applied voltage 3 Set 4262A controls as follows SELE TEBST egest enas e a s a oaae aa OFF FUNCTION eene a ra en C CIRCUIT MODE eat PRL Other co
22. to deter mine whether the 4262A has failed or not If con tents are incomplete if there is mechanical damage or defects scratches dents broken switches etc or if the performance does not meet the self test or performance tests notify the nearest Hewlett Packard office see list at back of this manual The HP office will arrange for repair or replacement without waiting for claim settlement 2 5 PREPARATION FOR USE 2 6 POWER REQUIREMENTS 2 7 The 4262A requires a power source of 100 120 220Volts ac 10 or 240Volts ac 5 10 48 to 66Hz single phase Power consumption is approximately 55 watts WARNING IF THIS INSTRUMENT IS TO BE ENERGIZED VIA AN EXTER NAL AUTOTRANSFORMER FOR VOLTAGE REDUCTION BE SURE THAT THE COMMON TERMINAL IS CONNECTED TO THE NEUTRAL POLE OF THE POWER SUPPLY 2 8 LINE VOLTAGE AND FUSE SELECTION CAUTION BEFORE TURNING THE 4262A LINE SWITCH TO ON VERIFY THAT THE INSTRUMENT IS SET TO THE VOLTAGE OF THE POWER SUPPLIED 2 9 Figure 2 1 provides instructions for line volt age and fuse selection The line voltage selection card and the proper fuse are factory installed for the voltage appropriate to instrument destination CAUTION USE PROPER FUSE FOR LINE VOLTAGE SELECTED CAUTION MAKE SURE THAT ONLY FUSES FOR THE REQUIRED RATED CURRENT AND OF THE SPECI FIED TYPE ARE USED FOR RE PLACEMENT THE USE OF MENDED FUSES AND THE SHORT CIRCUITING OF FUSE HOLDERS MUST BE AVOID
23. 0 0mH 00 00 aF 0000 nF nF 000 0 nF 09 00 uFi 000 0 aF 0000 2F 00 00mF 6600 nF 00 00 aF 000 0 nF 0600 pF 000 0 nF DA AF 00 00 nF G00 0 uF BA R 000 0 OL 0000 KO 00 00MQ 00 00 KO OGAK 0008 kD 00 00 MOQ 00 00 kQ 000 0k0 0000 KQ 00 0 MO J H 4 00 00 kQ 00 00 KO WO kN i TERE SER Model 4262A 3 11 INITIAL DISPLAY TEST 3 12 The Model 4262A automatically performs a front panel LED display test for a few seconds after instrument is tuned on after LINE button is depressed The display test sequence is 1 All front panel indicator lamps except nu meric segments and multiplier indicator lamps will illuminate SRQ LISTEN TALK and REMOTE lamps illuminate only when HP IB option is installed 2 Front panel pushbutton LED s and indicator lamps indicate that automatic initial settings see Paragraph 3 13 which follows have been set Simultaneously the LCR DISPLAY and DQ DISPLAY readouts are tested Allnu meric displays show figures of 8 H and multiplier indicators p n u m k M light in turn 3 Range indicator lamps step from right upper range to left lower range When steps 1 2 and 3 have been completed the trigger lamp begins to flash Figures on numeric displays change to meaningful numbers showing that the 4262A is ready to take a measurement 3 13 INITIAL CONTROL SETTINGS 3 14 One of the sophisticated features of th
24. 1 33 1 17 For information concerning a serial number prefix that is not listed on the title page or in the Manual Changes supplement contact your nearest Hewlett Packard office 1 18 OPTIONS 1 19 Options for the Model 4262A LCR Meter are available for adding the following capabilities Option 001 BCD Parallel Data Output Option 004 Comparator A comparator func tion providing GO NO GO judge ment with HIGH and LOW limits for LCR and D Q Option 101 HP IB Interface Option 010 100Hz Test Frequency instead of 120Hz _ Options 907 908 or 909 are handle or rack __ mount kits See paragraph 1 29 for details Option 910 Extra Manual 1 20 OPTION 001 1 21 The 4262A option 001 provides separate BCD parallel data output for L C R ESR and dissipation factor or quality factor simultaneously from the two rear panel connectors With this op tion external data processing devices such as a digital printer can be used with the 4262A 1 22 OPTION 004 1 23 The 4262A Option 004 provides for GO NO GO judgement by comparing L C R ESR and D Q values to HIGH and LOW limits Three judgement outputs are provided LED lamp dis play relay contacts or TTL level voltages open collectors HIGH measured value is not less than HIGH limit IN measured value is less than HIGH limit and not less than LOW limit LOW measured value is less than LOW limit Model 4262A 1 24 OPTION 101 1 25 The 426
25. 2 3 40 Pin Assignments of Output 5 9 A14 Phase Detector amp Integrator 2 Connector and Output Format 3 28 Adjustment es cseunenas aaa B 3 41 Timing Chart of BCD Data Output 3 29 5 10 A22S1 Switch Setting 5 14 3 42 Front Panel Features 0005 3 30 5 11 Zero Detector amp APAO Adjustments 5 15 3 43 Option 004 COMPARATOR 3 30 5 12 10kHz Measurement Accuracy 3 44 Pin Location of Comparator Adjustment ccccevecesccees 5 17 Data Output 0 adaware eooo 3 gt 5 13 Offset Adjustment Setup s s ss a 5 22 4 1 Measurement Frequency Test Setup 4 7 6 1 Major Mechanical Parts 4 2 Capacitance Accuracy Test Setup 4 8 Exploded View ccccccsees 6 23 4 3 Resistance Accuracy Test Setup 4 12 6 2 Mechanical Parts Exploded View scosese 6 25 iv Model 4262A Section I Paragraphs 1 1 to 1 6 SECTION I GENERAL INFORMATION 1 1 INTRODUCTION 1 2 This operating and service manual contains the information required to install operate test adjust and service the Hewlett Packard Model 4262A Digital LCR Meter Figure 1 1 shows the in strument and supplied accessories This section covers specifications instrument identification description options accessories and other basic information 1 3 Listed on the title page of this manual is a tnicrofiche part number This number can be used to order 4 x 6 inch microfilm transparencies of the manual Each microfiche
26. 20 160ms 120 100 Hz C L 900ms R 700mS When autorange is selected the following rs times per range step must be added to G the above times 1kHz 10kHz 45ms 180ms FR 120 100 Hz 150ms 670ms 5 When U CL is displayed the faster ranging time is selected Int Oleh de ep rg Reading Rate wa r Cs k iik Internal Approx 30ms between end of 7 Measurement Range of ESR 2 measurement and start of next cycle gg F 5 Zort 3 External Measurement cycle is initiated F Digit Display Digit Display by external trigger input PN EFA 5 190m l High D Factor Accuracies Typical Ps 10mi 100m 2 0 00 2 a 2 2 on 10 00 range iml m Circuit Mode 5 100 im 595 2 1000 6 i E 0a 1004 No 5 5 Cx 500 tar Iig Ris Ant We W a T E w 10 k iik Measurement Range of ESR 2 MEASURING TIME ms When LCR RANGE is set to MANUAL 1000 sis BEE pen co bs wer u oo OOO Loe o Boop eh a ae ee ee Be ee oe a SE mo a Bu BER BE BR BE elie ees ae 3 Cp ia a a l OHG ee a Pen a are u HE 200 a ett a es eel el HE ee Ss ee oe en C Counts Sum of Counts on LCR and DISSIPATION FACTOR Displays Model 4262 A 1kHz and 10kHz and about 900 milliseconds at 120Hz The wide range capability of the 4262A enables a measurement range from small capaci tances such as mica capacitors and the para sitic capacitance of a semiconductor device through high capacitances such as t
27. 2A Option 101 provides interfac ing functions to both transfer L C R ESR and D Q data to HP Interface Bus line and to receive remote control signals from HP Interface Bus line 1 26 OPTION 010 1 27 The 4262A Option 010 provides test fre quencies of 100Hz 1kHz and 10kHz 100Hz is used instead of standard 120Hz All other electri cal performance is the same as that of standard in strument 1 28 OTHER OPTIONS 1 29 The following options provides mechanical _parts necessary for rack mounting and hand carry ing Option 907 Front Handle Kit Option 908 Rack Flange Kit Option 909 Rack Flange and Front Handle Kit The installation procedures for these options are detailed in section H 1 80 The 4262A Option 910 provides an extra copy of the operating and service manual 1 31 ACCESSORIES SUPPLIED 1 32 Figure 1 1 shows the HP Model 4262A LCR Meter power cord HP Part No 8120 1378 and fuses HP Part No 2110 0007 and 2110 0202 1 33 ACCESSORIES AVAILABLE 1 34 For effective and easy measurement three styles of fixtures and leads for the measurement of various components are available These are listed in Table 1 1 A brief description of each of these fixtures and leads is given in Table 1 3 Refer to Section III Figure 3 3 on page 3 8 for detailed information on these devices Model 4262A Table 1 3 Table 1 3 Accessories Available HP 16061A Test Fixture direct coupled type for
28. 4 COMPARATOR 3 30 1 28 Other Options 1 8 3 51 Front Panel Features 1 31 Accessories Supplied 1 8 E Figure 3 42 PER 1 33 Equipment Available 00 1 8 3 52 LIMIT Setting Warning 3 31 GP INSTALLATION ceinen anani BA a OUTPUT Connector Decision 2 1 Introduction 23 sense 2 1 3 60 Opti ere IB ee er 7 He 2 3 Initial Inspection ae 2 1 3 62 BE or rete eer AAE yee eta 2 5 Preparation for Use RR eee er Connection to HP IB Controller 3 32 2 6 Power Requirements 2 1 3 63 HP IB Status Indicator 3 32 2 8 Line Voltage and Fuse Selection 2 1 BE LOCAL Switch nenne 3 32 2 10 Power Cable sceeeseeees 2 1 are HESIR Interface Capabilities 3732 2 14 Interconnections c0c 000 2 3 ue SOUE CA aici be 2 16 Operating Environment 2 3 3 67 ee gs ers 2 19 Installation Instructions 2 3 3 68 Functi a Jat si 2 21 Installation of Options ee IE SE RET ID 907 908 and 909 2 3 Talker CapabiHi yis un 353 2 23 Storage and Shipment EEE E Ce 3 69 Listener Capability L4 3 33 2 24 Environment Ken Ceo 19 veri ice neque 2 26 Packaging cscssevseeees 2 3 Capability SRA cesia 3 89 2 29 Option Installation 2 6 Bet nn day 2 31 Option 001 BCD Data Output mesa a Installation secceeceee 276 j Capability DC1 3 36 2 32 Option 004 Comparator 3 73 D APARE BEN a Installation chung 2 6
29. 6 eo bees MANUAL ECHO sig a aes Bike ews uae he hae ee INT NOTE TO ENSURE CORRECT RESULTS OF SELF TEST OPERATION IN L AND R MEASUREMENT FUNCTIONS CON NECT ALL HIGH AND LOW SIDE UN KNOWN TERMINALS TOGETHER WITH A LOW IMPEDANCE STRAP IF THIS SHORT CIRCUIT IS MADE AT THE ENDS OF THE TEST LEADS COR RECT RESULTS MAY NOT OCCUR Section II Paragraphs 3 7 to 3 9 3 7 TEST SIGNALS 3 8 Three test signal frequencies are available these are 120Hz 1kHz and 10kHz sinusoidal wave forms which have a frequency accuracy of 3 The typical voltage applied to the sample or current flowing through the sample is specified in Table 3 1 for all test signal frequencies A constant test voltage is supplied to the sample when measuring parallel parameters Lp Cp and Rp The constant current method is adopted for the measurement of Ls Cs and Rs The 50mVrms test voltage is used only for Cp measurement l Table 3 1 Model 4262A 3 9 MEASUREMENT RANGE 3 10 As given in Table 3 2 the 4262A has wide measurement ranges Seven or eight ranges are available depending upon measurement function and the appropriate range is automatically selected for the value of sample connected to the 4262A UNKNOWN terminals For applications which re quire a fixed measurement range such applications are sometimes needed for example in inductance measurements manual range control is push button selectable Four or five ranges however are us
30. ED 2 10 POWER CABLE 2 11 To protect operating personnel the 2 1 Section II Model 4262A Paragraph 2 12 SELECTION OF OPERATING VOLTAGE Operating voltage is shown in module window and is usually set to 120V at factory _ 1 Disconnect power cable and slide module window to left 2 Pull FUSE PULL lever and rotate to left This removes line fuse 3 Select operation voltage by orienting PC board to position desired voltage on top left side Push board firmly into module slot 4 Rotate FUSE PULL lever back to its normal position and re insert fuse in holder be careful to select correct fuse value Operating Voltage ___ Fuse ps Ge iy ae 100Vac or 120Vac 2110 0007 1 A 250V Slow Blow Figure 2 1 Voltage and Fuse Selection National Electrical Manufacturer s Association NEMA recommends that the instrument panel and cabinet be grounded The Model 4262A is e quipped with a three conductor power cable which when plugged into an appropriate receptacle grounds the instrument The offset pin on the power cable is the ground wire 2 12 To preserve the protection feature when operating the instrument from a two contact outlet use a three prong to two prong adapter HP Part No 5080 3149 and eonnect the green grounding tab on the adapter to power line ground 2 2 CAUTION THE MAINS PLUG MUST ONLY BE INSERTED IN A SOCKET OUTLET PROVIDED WITH A PROTECTIVE EARTH CON
31. GNAL settings Tests under certain com bined conditions of FUNCTION and TEST SIGNAL settings are done for five ranges A test for a range ends with a display of PASS normal operation or FAIL abnormal operation and then next range test is started Range shifting for this test is done automatically from lower to higher 1010 1010 PASS en OOOO O O WEITER AU the combinations of FUNCTION and TEST SIGNAL switch settings are listed below Even if the FUNCTION or TEST SIGNAL switch settings are limited for proposed sample measurement all combined conditions should be tested Ch 120Hz2 SELF TEST Open between 1 kHz SELF TEST en 10 KHz SELF TEST C LOW LEVEL 10 kHz SELF TEST C LOW LEVEL 1 kHz SELF TEST C LOW LEVEL 120z SELF TEST W GH SELF TESH Too L Liz SELF_TEST L 10 kHz SELF TEST RZESR 10 kHz SELF TEST R ESR 1 kHz SELF TEST R ESR 120Hz SELF TEST Short between HIGH side and LOW side When FUNCTION or TEST SIGNALS switch setting is changed the SELF TEST switch is automatically disabled Therefore whenever a new setting is made push the SELF TEST switch again For see page 3 5 Section III Figure 3 1 3 2 Parallel capacitance era Parallel resistance _ Series capacitance Parallel inductance a BE Series resistance O O E AIGA
32. LA Sackaro OPERATING AND SERVICE MANUAL MODEL 4262A LCR METER including Options 001 004 010 and 101 SERIAL NUMBERS This manual applies directly to instruments with serial numbers prefixed 25144 With changes described in Section VI this manual also applies to instruments with serial numbers prefixed 1710J 1739J and 2022J For additional important information about serial numbers see INSTRUMENTS COVERED BY MAN UAL in Section l COPYRIGHT YOKOGAWA HEWLETT PACKARD LTD 1977 9 1 TAKAKURA CHO HACHIOJI SHI TOKYO JAPAN Manual Part No 04262 90007 E a Be Microfiche Part No 04262 90057 ES ne ee SAFETY SUMMARY The following general safety precautions must be observed during all phases of op eration service and repair of this instrument Failure to comply with these pre cautions or with specific warnings given elsewhere in this manual violates safety standards of design manufacture and intended use of the instrument Hewlett Packard Company assumes no liability for the customer s failure to comply with these requirements GROUND THE INSTRUMENT To minimize shock hazard the instrument chassis and cabinet must be connected to an electrical ground The instrument is equipped with a three conductor ac power cable The power cable must either be plugged into an approved three contact electrical outlet or used with a three contact to two eontaet adapter with the grounding wire green firmly connected to
33. RCUIT MODE AUTO LCR RANGE AUTO Try changing TEST SIGNAL to 120 1k or 10kHz Set 4262A LCR RANGE to _ AUTO Try changing TEST SIGNAL to 120 1k or 10kHz Measured L C or R value is ex tremely large or small compared with the selected range sra less than 80 counts When Measured L or C value is less than 80 counts DQ measurement is omitted z on yi eas In ALCR measurement the differ ence between the preset value and any DQ the measured value of the sample reading exceeds 999 counts In ALCR measurement the cal culated difference exceeds 999 counts In addition the value of measured sample is less than 80 counts Minus display sometimes occurs Zero count display is meaning when sample having a value around ful when minus display zero is measured repeatedly turns on and off Minus is displayed Sometimes a minus display occurs Change to appropriate when a capacitor or inductor is FUNCTION measured in L or C FUNCTION Offset adjustment signal applied is Readjust offset signal for too great causes minus display proper magnitude 3 14 Model 4262 A Section II Figure 3 6 MEASUREMENT PROCEDURE FOR GENERAL COMPONENTS DC POWER SUPPLY 1 Remove shorting bar connections between high terminals and between low terminals all terminals are now isolated from each other Connect 16061A T
34. TA OUTPUT connector on rear panel This alternate output is enabled by changing slide switch setting on printed circuit board P N 04262 66535 PC board 04262 66535 is located nearest to the rear panel in the right hand row of PC boards Normal setting of the four section slide switch for parallel output and the set ting for alternate output are illustrated below Normal Alternate output 330 P 40 P AGO gt aii 7 3 47 Output Timing 3 48 Timing charts for parallel simultaneous output and alternate output are shown in Figure 3 41 3 27 Model 4262A O m NN OH TO m DH DATA O m NA vn oS amp BH POLARITY tier 14262A ee Prin lette 0 l 2 3 ppi aa Di ER ER zdi 7 air Seas ae k PR Od sa Ep d q 10 YO anjea pssejdsig ASt O m NP yD on oO wod jeq Las pew Z apod tur apod Muez Oje 3umuny f Jo ep5unuuy z Sauanbasg y L sonanba ig Z aPOW JDD UO fung L IPON WNIT UONIUNA 7 ON ON U01Y93UU07 ON ON pu o AS punoo pungay papo WER gm po p ad bo ioyejounuuy g I0jEel3unuuy 8 GND and pung z AO INA TYNHILX JAKA LiGIHNI Sy IN PUTrO1D a eH D F Wu Ok LCR NOT avs lt S Z DQ NOT AV 4262A ined 4262A is hoeza tie 4262A 0 I 2 j Figure 3 40 Pin Assignments of Output Connector Output Format Section II Figure 3 40 Printed ie
35. TACT THE PROTECTIVE ACTION MUST NOT BE NEGATED BY THE USE OF AN EXTENSION CORD POWER CABLE WITH OUT PROTECTIVE CONDUCTOR GROUNDING Model 4262A 2 13 Figure 2 2 shows the available power cords which may be used in various countries including the standard power cord fumished with the in strument HP Part number applicable standards for power plug power cord color electrical character istics and countries using each power cord are listed in the figure If assistance is needed for se lecting the correct power cable contact nearest Hewlett Packard office 2 14 interconnections 2 15 When an external bias is applied to the sample capacitor through DC BIAS input con nectors on the 4262A rear panel both plus and minus sides of the external power supply should be connected to the plus and minus sides of the 4262A EXT DC BIAS connector respectively CAUTION THE MAINS PLUG MUST BE IN SERTED BEFORE EXTERNAL CONNECTIONS ARE MADE TO MEASURING AND OR CON TROL CIRCUITS 2 16 Operating Environment 2 17 Temperature The instrument may be op erated in temperatures from 0 C to 55 C 2 18 Humidity The instrument may be operated in environments with relative humidities to 95 to 40 C However the instrument should be protected from temperature extremes which cause condensation within the instrument 2 19 Installation instructions 2 20 The HP Model 4262A can be operated on the bench or in a rack mount
36. and Accessories 1 1 4 4 Dissipation Factor Confirmation Check 1 2 Serial Number Plate persoa Laf BELUDE mare 4 14 4 5 A Accuracy Test Setup 4 17 2 1 Voltage and Fuse Selection nee ene 4 6 Internal DC Bias Source 2 2 Power Cable rare s 2 4 Test Setup sabiasana 4 19 2 3 Rack Mount Kit cccueeee 2 5 4 7 Offset Adjustment Test Setup 4 20 2 4 Option Installation Dlustrations ARE 2 7 4 8 Comparator Test Setups 4 22 4 9 Comparator Output J6 data format 4 24 3 1 Front Panel Features ea Bee 4 10 HP IB Interface Test Setup 4 25 3 2 Rear Panel Features e c00 3 4 4 11 SRQ Service Routing e 0c000 4 29 3 3 Test Fixture and Leads 3 8 3 4 Measurement Error due to 5 1 Power Supply Voltage Adjustment 5 6 Misadjusted ZERO ADJ controls 3 10 5 2 Nanoprocessor Operating Power 3 5 Conversion between Parallel and Voltage Adjustment Location 5 7 Series Equivalents 0ec0e 3 12 5 3 A12 Board Offset Adjustment 5 8 3 6 Relationship of Dissipation to 5 4 Waveform at Al2Q11 Source 5 9 Series and Parallel Resistance 3 13 5 5 A13 Board Offset Adjustment 5 9 3 7 General Component Measurements 3 15 5 6 Waveform at A13TPI1 5 10 3 8 Semiconductor Device Measurement 3 18 5 7 Waveform at AIITP2 eos Seil 3 9 External DC Bias Circuits 3 20 5 8 Waveform at Al3TP3 5 1
37. be used as Guard terminal for increasing ac curacy in certain measurements HP IB Status Indicator and LOCAL switch LED lamps for SRQ LISTEN TALK and REMOTE which indicate status of interface between the 4262A Option 101 and HP IB controller LOCAL switch enables front panel controls instead of remote control signals from HP IB line Figure 3 1 Front Panel Features sheet 2 of 2 Section DI Figure 3 2 3 4 Model 4262A BCD D Q DATA OUTPUT Connector BCD parallel data of measured dissipation factor D or quality factor Q are output ted through this 50 pin connector installed on the 4262A Option 001 BCD LCR DATA OUTPUT Connector With Option 001 BCD parallel data for in ductance capacitance and resistance meas ured values are outputted through this 50 pin connector COMPARATOR OUTPUT Connector The 4262A Option 004 provides comparator decision outputs for LCR and D Q through this 50 pin connector AP IB Digital Bus Connector This 24 pin connector conveys bus signals and remote programming instructions to the 4262A Option 101 and transmits data from the 4262A Option 101 to the bus Address Switch This seven section switch sets address code of 4262A Option 101 and TALK ONLY or ADDRESSABLE mode of operation EXT DC BIAS Connector Extemal dc bias voltage can be applied to the sample up to the maximum voltage of plus 40V through this connector EXT TRIGGER Connector This connector is used for
38. citance Cp of 1000pF with a dissipation factor of 0 5 is equivalent to a series capacitance Cs value of 1250pF at lkHz As shown in Figure A inductance or capa citance values for parallel and series equivalents are almost identical when the dissipation factor is less than 0 01 The letter D in Figure A re presents dissipation factor and is calculated by the equations presented in Table A for each cir cuit mode The dissipation factor of a com ponent always has the same dissipation factor at a given frequency for both parallel equivalent and series equivalent circuits Note Dissipation factors displayed when CIRCUIT MODE is switched between PRL and SER may exhibit slight dif ferences due to the measurement ac curacy of the 4262A The reciprocal of the dissipation factor D is quality factor Q and D is often represented as tan 6 which is the tangent of the dissipation angle 5 Figure 3 6 is a graphical presentation of the equations in Table A For example a series inductance of 1000uH which has a dissipa tion factor of 0 5 at 1kHz has a series resistance of 3 14 ohms Table A tae bos Factor Equations I IH Freie a 7 2 bie D 2rfCsRs a Cp x vo Cs Rp DE eg Ls Lp Rs 1 Rp Conversion to other modes Dek Lp 1 D2 Ls Rp HR Rs p maana VER ioral ae ae aus ZRH Ze PA Canis D Cp E A a call sa AR AH ZEN AL wo
39. citance between High and Low leads What to do Use shielded cable for connection between sample and 4262A UNKNOWN terminals Connect outer conductor to GUARD terminal Adjust C ZERO ADJ control properly to compensate for stray capacitance 3 24 Model 4262 A Section II Table 3 4 Table 3 4 Unusual Operating Indications Sheet 3 of 4 indication Cause of trouble Cause A Effect of Low terminal capacitance with respect to ground Sometimes the measurement can not be performed when a relatively large capacitance between Lpor terminal and ground exists Allowable magnitudes for stray capacitance Excessive measurement error Allowable Stray Capacitance Magnitude Measurement Frequency 100nF without additional error are given in figure at 200 Cause B ad Effect of High terminal capacitance with respect to ground The stray capacitance UNKNOWN 3 will reduce test signal level applied to the GUARD cya 4 POT H Pot H CvA sample measured during capacitance measurement This decrease in signal level will not produce an additional error even when measurement signal level is reduced to a third of its nominal level It is neccessary of course that special care be taken to use the proper test signal level when a device is measured whose parameters may be affected by the test signal level Display fluctuations may sometimes appear Indication What to do
40. contains up to 60 photo duplicates of the manual pages The microfiche package also includes the latest manual changes supplement as well as all pertinent service notes To order an additional manual use the part num ber listed on the title page of this manual 1 4 DESCRIPTION 1 5 The HP Model 4262A LCR Meter is a general FAS 445 P N 8120 1378 purpose fully automatic test instrument designed to measure the parameters of an impedance ele ment with high accuracy and speed The 4262A measures capacitance inductance resistance equi valent series resistance and dissipation factor or quality factor over a wide range at test frequencies of 120Hz 1kHz and 10kHz employing a five term inal connection configuration between the com ponent and the instrument The measuring circuit for the device to be measured is capable of both parallel and series equivalent circuit measurements and the measured values are displayed by the two three full digits LED displays on the front panel A convenient diagnostic function also featured in the 4262A is actuated by a SELF TEST switch This confirms functional operation of the instrument 1 6 The measuring range for capacitance is from 0 01pF to 19 99mF inductance from 0 014H to 1999H and resistance from ImQ to 19 99M2 which are measured with a basic accuracy of 0 2 to 0 3 depending on test signal level frequency and measuring equivalent circuit and at typical measuring speeds of
41. e 4262A is its automatic initial control setting func tion After the instrument is turned on the front panel control functions are automatically set as follows SELF TEST svaced aye wae ea OFF CIRCUIT MODE AUTO FUNCTION u 00 su C LCR RANGE AUTO LOSS o race D DQ RANGE u oe Ses AUTO TEST SIGNAL 1kHz TRIGGERS 24a INT As these initial settings provide the general capa citance measurement conditions applicable to a broad range of capacitance measurements a capa citance can be usualiy measured by merely con necting the sample to the UNKNOWN terminals Inductance or resistance can be measured by press ing the L FUNCTION or R ESR FUNCTION buttons as appropriate When a different meas urement is to be attempted press appropriate push buttons and select desired functions Section HI Paragraphs 3 11 to 3 18 3 15 D Q MEASUREMENT 3 16 The Model 4262A makes a loss measure ment along with capacitance or inductance meas urements on each measurement cycle The meas ured loss factor is displayed in the form of the dissipation D or quality Q factor of the sample The D or Q function is pushbutton selectable in both L and C measurements D and Q measure ment ranges are 001 to 1 999 0 01 to 19 9 050 to 1 996 0 05 to 19 61 00 1 to 166 7 001 to 1000 D 2 ranges Q 4 ranges The D range appropriate to the value of the sample is automatically selected Alternately a manual
42. e for a de bias of 40V When the bias voltage is less than 40V Ri limit is RiVb 40 N where Ri is value given in the table and Vb is applied de bias voltage Model 4262A 3 40 OPTION OPERATION 3 41 Operating instructions for Options 001 004 and 101 are described in the following para graphs 342 OPTION 001 BCD PARALLEL DATA OUTPUT 3 42 The 4262A Option 001 provides parallel BCD outputs for LCR display D Q display and in formation for various control settings These outputs are fed to two 50 pin connectors on the rear panel 3 44 Output Data and Pin Assignment 3 45 The 4262A Option 001 ae oe kinds of output data 1 FUNCTION and CIRCUIT MODE 2 Test Signal Frequency LOW LEVEL or normal is excluded 3 Annunciator Normal Overflow Uncal LCR and D Q are not annunciated 4 Unit p n u m k M D Q judgement whether capacitance inductance or resis tance depends on output of FUNCTION switch setting information 5 Decimal Point 6 Polarity 7 Displayed value 8 Other Input Output Signals Parallel output Section II Paragraphs 3 40 to 3 48 The signal pin assignments for the 50 pin con nector are shown in Figure 3 40 When these signals are fed to digital printer the print out is given as a 10 digit decimal number 3 46 Alternate Output of LCR and D Q Data BCD outputs for LCR and D Q data of 4262A Option 001 can be alternately supplied through one 50 pin BCD LCR DA
43. ed in the series and parallel equivalent circuit measurement modes When the CIRCUIT MODE is set to AUTO the 4262A will automatically select the appropriate circuit mode range over the measurement ranges shadowed in Table 3 2 settle on the proper range and measure the sample Sample Voltage or Current CIRCUIT MODE Lende De Se Ml ee 40mA rms 10mA rms ImA rms 100 pA rms 10 uA rms loan om 10 uA rms 100 uA rms l u rms 10mA rms 40mArms iVrms 50mVrms iVrms 60mVrms IVrms 50mVrms 1Vrms 50mVrms 1Vrms 50mVrms 40mA rms 10mA rms ImA rms 100 pA rms 10 pA rms ens When TEST SIGNAL is set to LOW LEVEL Table 3 2 Measurement Ranges TEST Range CIRCUIT SIGNAL l MODE Frequency 1 120 Hz 0000 4H 00 00mA Ls IkHz 000 0 aH 0000 4H 10kHz 00 00 2H 000 0 aH f 120 Hz 8000 pF gt Cp IkHz 000 0 pF 10 kHz 00 00 pF j 120 H2 Cs i l kHz i 10kHz 126 He Rp 1 kHz 10 kHz i 120 Hz 0000 m2 0 000 000 00 Rs kHz 0000 mE 09 000 000 00 1OkKHz OW 06 600 W0 0 Fe lll ec Note 00004H indicates a range of 00014H to1999uH and similarly for Fand 2 3 6 0000 000 0mH 0006 N 0000 0 0000 U 0000 2 0000 0 wN 4 000 0H 0000H 00 00H 000 0H 0006mH 0000H 000 0mH Hoi 00 00H nH 0000 mH 4i 00
44. el C ZERO ADJ and L ZERO ADJ controls permit compensation for these residual factors and can eliminate measurement errors due to the test jig The capacitance or inductance readout can be set to zero for the particular test jig used with the instrument In capacitance and induct ance measurements an incomplete offset adjust ment causes two types errors 1 Deviation from zero counts When a smalicapacity or a small inductance is measured the measured capacitance inductance value becomes the sum of the capacitance inductance of sample and the stray capacitance residual inductance of test jig The effects of the residual factors are Cm Cx Cst Lm Lx Lres Where subscripts are m measured value x value of sample st stray capacitance res residual inductance Both Cst and Lres cause the same measure ment error and are independent of sample value 2 Influence on high capacitance and high in ductance measurements When a high inductance a high capacitance is measured the residual factors in the test jig also contribute a measurement error The affect of stray capacitance or residual inductance on measurement parameters are Stray capacitance Offsets high inductance measurements Residual inductance Offsets high capacitance measurements These measurement errors increase in proportional to the square of the test signal frequency The effects of the residual factors can be expre
45. equest exists The remainder of the 8 bit signal identifies the character of the SRQ ba b7 be b b3 b bi NOT USED T san SYN ERR PASS FAIL FAIL 2 FAIL 3 SRO YES NO SRQ Service Request is disabled when RQS Request Status or STB Status Byte is set to 00000000 or when STB Status Byte signal transfer is completed Request Statuses RQS of the 4262A 1 DRDY Data ReaDY When the 4262A completes a measurement cycle this status bit is set This status is set without serial polling if NOT DATA READY is set 2 SYN ERR SYNtax ERRor When the 4262A receives an erroneous Remote Pro gram Code which is not listed in Table 3 60 this status bit is set 3 PASS Self Test Pass When PASS is dis played in Self Test done by remote control this status bit is set 4 FAIL 1 Self Test Fail 1 When FAIL 1 is displayed in Self Test done by remote con trol this status bit is set 5 FAIL 2 Self Test Fail 2 When FAIL 2 is displayed in Self Test done by remote con trol this status bit is set 6 FAIL 3 Self Test Fail 3 When FAIL 3 is displayed in Self Test done by remote con trol this status bit is set 3 33 Section II Table 3 60 3 34 Table 3 60 Remote Program Codes CONTROL Program Code Fi Function L C F2 R ESR F3 Cireuit Mode AUTO C1 PRL C2 SER C 3 Li L2 Frequency Hl H2 H3 T1 Trigger INT EXT T2 HOLD MANUAL T 3 Self Test So S1 MO Cp Low Leve
46. eral type components with axial or vertical leads To install fixture disconnect shorting bars between high terminals and between low terminals Insert fix ture screws to firmly attach fixture to instrument Two kinds of inserts are included for components with either axial or vertical leads DUT range at 1kHz pF nF uF H 10 100 MQ 10 100 mH 10 100 kQ The 16062A is especially useful when measuring iow impedances DUT values measurable with the 16062A are diagrammed below If the measuring sample is more than approx 300uF at 1kHz or less than approx 1004H at 1kHz it is recommended that the respective potential leads and current leads be twisted together m 10 100 kn 10 100 MQ 10 100 tt TE A me ale a es ee ee Sr ae FE NEE FEN EEE The 16063A is particularly useful when measuring high impedances DUT values measurable with the 16063A are diagrammed below This test lead set is not in tended to be used for the accurate measurement of N by eae Ae small capacitances less than approx 100pF due to _tr ea en the residual capacitance of the leads Test Leads for four terminal measurement does not contain guard conductor 16063A Test Leads Measurable DUT ranges at IkHz _ pF nF uF uH mH H 9 10 100 KR 10 100 MQ 10 100 Figure 3 3 Test Fixture and Leads Coaxial test leads with guard conductor fo
47. est Fixture to 4262A UNKNOWN terminals Note User constructed test fixture may also be connected Guard terminal is sometimes used in small capacitance measurements 2 Depress LINE button to turn instrument on An initial display test is automatically per formed before measurement begins 3 Check that 4262A trigger lamp begins to flash The 4262A control functions are auto matically set as follows automatic initial settings DC BIAS ns ae ee ae OFF SELF TEST Rm eg ea OFF CIRCUIT MODE u AUTO FUNCTION use ae ae C LCR RANGE oode cene a e RS AUTO FOSS oe ra ac he Zul a haa Rs S D DO RANGE hi 545 EE een AUTO TEST SIGNAL sinne ikHz TRIGGER ra ard nenn er INT Note To check fundamental operating conditions of the instrument perform SELF TEST refer to Paragraph 3 5 for SELF TEST details Press SELF TEST button again to release the function 4 Rotate C ZERO ADJ control until capacitance readout is 000 counts on LCR DISPLAY minus sign should not appear 5 Connect a shorting lead to Test Fixture to short circuit the Unknown terminals to zero ohms zero microhenries 6 Press L FUNCTION button Figure 3 7 General Component Measurements Sheet 1 of 3 Section IH Model 4262 A Figure 3 6 7 Rotate LZERO ADJ control until inductance readout is 000 counts on LCR DISPLAY Note To achieve more critical zero adjustments when 10kHz test signal frequency is used per form the capacitance and inductance zero
48. f lead length of device allows it is recom mended that the device be connected directly to UNKNOWN terminals 5 Read displayed values Loss factor of the sample will be simultaneously displayed on DQ DISPLAY une er Note When using manual trigger press HOLD MAN UAL button Each time the button is pressed the instrument is triggered When measuring multiple samples whose values are about the same it is recommended that the LCR RANGE be set to MANUAL and that the range be held Parameter Measured Connections to 4262 A Base collector junction capacitance Cob Emitter current 0 Base collector junction capacitance Cre Common emitter High High FET gate capacitance wt Bios Blas peaa Low Lo Low 5 si Open High it Bias Low Open High Bias Open 5 Low Diode junction capacitance Ah N Note Hot carrier diodes and High Low germanium diodes gen F R ota No bias should Sea cannot be applied e measured Figure 3 8 Semiconductor Device Measurement Sheet 2 of 2 Section II Figure 3 8 External DC Voltage Bias Circuits 40V lt lt 200V 1 Connect external dc bias source as shown in diagram __DC_POWER SUPPLY CAUTION DO NOT APPLY DC VOLTAGE EXCEEDING 200VOLTS OR 4262A CIRCUITRY WILL BE DAMAGED Es 200v Model 4262A Note E voltage is applied to Cx in figure E voltage can be applied to Cx in this figure In the above arrangement
49. function may be deleted from setup Procedure 1 Press LINE button to turn instrument on After the initial display test trigger lamp will begin to flash and the 4262A functions are automatically set as follows SELF TEST scaun eaaa ea E rei OFF CIRCUIT MODE 4 208 254044 AUTO PUNCTION unserer C LER RANGE 22 02 AUTO LOSS ia oe oe be ee are D DO RANGE ooro tie aana ae Re AUTO TEST SIGNAL 222 222 1a es ae es 1kHz TRIGGER 22 222 350 unsere INT 2 Press TEST SIGNAL LOW LEVEL and PRL CIRCUIT MODE buttons The test signal level is now 50mV and the parallel equivalent circuit mode is selected Note A semiconductor junction capacitance meas urement must be made with a low level test signal If desired TEST SIGNAL fequency may be set to 10kHz 3 Adjust C ZERO ADJ control for zero counts on LCR DISPLAY Note If necessary apply DC bias voltage internally or externally at rear panel EXT DC BIAS con nector External DC bias source should be stable with low noise Set DC BIAS switch in EXT position during application of external DC bias Figure 3 8 Semiconductor Device Measurement Sheet 1 of 2 Model 4262A Section III Figure 3 7 CAUTION NEVER APPLY AN EXTERNAL DC BIAS OVER 40V 4 Connect Semiconductor device to test lead or to fixture To obtain reliable meas urement results observe the following Note a It is impossible to measure junction capaci tance when bias current flows through sample b I
50. g SABS 164 250V Cable HP 8120 2956 Cable HP 8120 4211 NOTE Each option number includes a Plug option 905 is frequently used for materials and plug body configurations Kipherale straight 90 ete peripner Figure 2 2 Power Cables Supplied 2 4 Model 4262 A Section I Figure 2 3 it Part Nabe 907 Handle Kit 5061 9689 08 9 Rack Flange Kit 5061 9677 Rack Flange amp Handle Kit 5061 9683 1 Remove adhesive backed trim strips 1 from side at right and left front of instrument HANDLE INSTALLATION Attach front handle 3 to sides at right and left front of in strument with screws provided and attach trim 4 to handle RACK MOUNTING Attach rack mount flange 2 to sides at right and left front of in strument with screws provided FF EIRA van he HANDLE AND RACK MOUNTING Attach front handle 3 and rack mount flange together to sides at right and left front of in strument with screws provided When rack mounting 3 and 4 above remove all four feet lift bar at inner side of foot and slide foot toward the bar Figure 2 3 Rack Mount Kit Section II Paragraphs 2 29 to 2 34 2 29 OPTION INSTALLATION 2 30 When it is desired to add one or two of the available optional features to a standard 4262A instrument perform the installation as follows Refer to option installation illustrations on facing page a Push LINE switch to off b Remove instrument top co
51. he measurement of electrolytic capacitors to be covered A wide range of inductance measurements from the in ductance of a high frequency transformer to that of a power transformer can be measured The wide resistance range permits the measurement of wire wound resistors through the measurement of solid resistors In parallel capacitance measurements either a test signal level of 1Vrms or 50mVrms can be selected 1 7 The 4262A has the capability of making capacitance inductance and resistance deviation measurements This function is enabled by pushing the A LCR switch to display the deviation of a re ference value When the A LCR switch is depressed the reference value is obtained and memorized from the preceding measurement The practi cal use of this feature is evident when it is desired to make a measurement on a variable capacitor First the minimum value is measured then the A LCR button is pushed Minimum to maximum capa citance is now displayed as the capacitor is rotated through its range For parallel capacitance meas urements test signal levels of either 1Vrms or 50mVrms may be selected Other versatile 4262A capabilities and features are for example the use of internal and external de bias voltages LC zero adjustment and options providing BCD output HP IB interfacing capability or a comparator func tion 1 8 SPECIFICATIONS 1 9 Complete specifications of the Model 4262A LCR Meter are given in Tab
52. instruments it changes only when a change is made to the instrument The suffix however is as signed sequentially and is different for each in strument The contents of this manual apply to in struments with the serial number prefix es listed under SERIAL NUMBERS on the title page 1 15 An instrument manufactured after the printing of this manual may have a serial number prefix that is not listed on the title page This un listed serial number prefix indicates the instrument is different from those described in this manual The manual for this new instrument may be ac companied by a yellow Manual Changes supple ment or have a different manual part number This supplement contains change information that explains how to adapt the manual to the newer instrument 1 16 In addition to change information the supplement may contain information for correct ing errors called Errata in the manual To keep this manual as current and accurate as possible Hewlett Packard recommends that you periodically request the latest Manual Changes supplement The supplement for this manual is identified with this manual s print date and part number both of which appear on the manual s title page Com plimentary copies of the supplement are available from Hewlett Packard If the serial prefix or number of an instrument is lower than that on title page of this manual see Section VII Manual Changes 1 7 Section I Paragraphs 1 17 to
53. l Mi PO P1 Data Ready OFF RQS Mode ON C L R LCR Range 100p 100 a 1000m at I kHz 1000 1000 10 10n 10m 100 100 100 1000 1000 1000 10 k 10 4 10 100 k 100 i00 1000 k 1000 10M DQ Rane Data Ready RQS Mode is automatically disabled when Remote Status _is changed to Local Status Model 4262A Model 4262A Section III Table 3 61 Table 3 61 Remote Message Coding device clear group execute trigger go to local local lock out my listen address my talk address other talk address OTA TAGNMTA selected device clear 0000100 serial poll disable 1 0 0 1 serial poll enable status byte unlis ten untalk Universa Command Addressed Command Address Status Byte 3 35 Section II Paragraphs 3 71 to 3 75 3 71 Remote Local Capability RL1 The 4262A goes to Remote Status only when it accepts Listen address with REN Remote Enable line in the Bus lines set to 1 Remote status is not obtained if REN line is set to 1 after Listen address is received Remote status is returned to Local status when one of following conditions is present i REN line is set to 0 2 LOCAL switch on front panel is depressed 3 GTL Go To Local command is received Local Lock Out LLO Local Lock Out inhibits the function of LOCAL switch This LLO command is a universal command and is valid when REN line is set to 1 LLO command is disabled when REN line is set t
54. lat cable assembly from A24 comparator option board to connector board of connector assembly on rear panel UPPER TRIM acan ac anne COSA Sep Bas 3 Install connector assenibly ORANGE RED Front Panel Assembly for comparator 1G Install new front panel assembly and connect attached 4 Pull out board third from front on the right side as viewed flat cable assembly to connector on mother board from front panel P N 04262 66523 or 04262 66623 11 Install upper trim top and bottom covers Figure 2 4 Option Installation Illustrations 2 7 Section H Model 4262 A Paragraphs 2 35 and 2 36 Table 2 1 Option Components Option Function man 04262 66535 A35 Board Assembly 5060 4020 Connector Board Assembly 8120 0360 Flat Cable Assembly BCD Data Output 001 04262 65004 04262 66524 5060 4020 8120 0360 Front Panel Assembly A24 Board Assembly Connector Board Assembly Flat Cable Assembly 004 Comparator 04262 66525 04262 66503 8120 0360 d 0380 0644 2190 0577 A25 Board Assembly A3 Connector Board Assembly Flat Cable Assembly Stud for A3 Board Assembly Spring Washer HP IB Compatibility Note To mount Connector Board assemblies use rear panel blank plate retaining screws Part No 0520 0129 removed for the option installation Model 4262A Section II Paragraphs 3 1 to 3 6 SECTION Ill OPERATION 3 1 INTRODUCTION 3
55. le 1 1 These specifi cations are the performance standards or limits against which the instrument is tested The test procedures for the specifications are covered in Section IV Performance Tests Table 1 2 lists gen MVOKEGAWA HEMIETT PARALDO Oe HEPA Figure 1 2 Serial Number Plate Section I Paragraphs 1 7 to 1 16 eral information General information is not speci fications but is typical characteristics included as additional information for the operator When the 4262A LCR Meter is shipped from the factory it meets the specifications listed in Table 1 1 1 10 SAFETY CONSIDERATIONS 1 11 The Model 4262A LCR Meter has been designed to conform to the safety requirements of an IEC International Electromechanical Com mittee Safety Class I instrument and is shipped from the factory in a safe condition 1 12 This operating and service manual contains information cautions and warnings which must be followed by the user to ensure safe operation and to maintain the instrument in a safe condition MANUAL 1 14 Hewlett Packard uses a two section nine character serial number which is marked on the se rial number plate Figure 1 2 attached to the in strument rear panel The first four digits and the letter are the serial prefix and the last five digits are the suffix The letter placed between the two sec tions identifies country where instrument was manufactured The prefix is the same for all iden tical
56. librated at 120Hz and 1kHz DUT Box Comprises L C and R components whose HP 16362A P A values are calibrated at 10kHz nce Test A Adjustments T Troubleshooting P Performa 1 10 Model 4262A Section IT Paragraphs 2 1 to 2 11 SECTION Il INSTALLATION 2 1 INTRODUCTION 2 2 This section provides installation instructions for the Model 4262A LCR Meter The section also includes information on initial inspection and damage claims preparation for using the 4262A packaging storage and shipment 2 3 INITIAL INSPECTION 2 4 The 4262A LCR Meter as shipped from the _ factory meets all the specifications listed in Table 1 1 On receipt inspect the shipping container for damage If the shipping container or cushioning material is damaged notify the carrier as well as the Hewlett Packard office and be sure to keep the shipping materials for carrier s inspection until the contents of the shipment have been checked for completeness and the instrument has been checked mechanically and electrically The contents of the shipment should be as shown in Figure 1 1 The procedures for checking the general electrical op eration are given in Section III Paragraph 3 5 Ba sic Operating Check and the procedures for checking the 4262A LCR Meter against its specifi cations are given in Section IV Firstly do the self test If the 4262A LCR Meter is electrically ques tionable then do the Performance Tests
57. ltage power line or similar exists near the 4262A The 4262A and sample are connected together with relatively long non shielded cable What to do 1 Enclose sample in metal case Connect case electrically to 4262A GUARD terminal as illustrated 2 Use shielded cable for connection between sample and the instrument Connect cable shield to GUARD 3 23 Section II Model 4262A Table 3 4 Table 3 4 Unusual Operating Indications Sheet 2 of 4 Indication Cause of trouble When measuring a low impedance small Excessive residual impedance inductance inductance resistance or high capacitance capacitance or resistance of test leads measurement error is excessive in a twoterminal measurement Mutual test lead induction between current leads Hcur and Lcyr and potential leads Hpor and Lpor What to do Use test leads in four terminal con figuration and measure Twist current leads Hcur and Leyp together Do the same with potential leads Hpor and Lpor Additional error is presented as w2LrCx X 100 for C measurement where 28T test frequency residual inductance unknown capacitance Indication Cause of trouble Measurement Cause of error High Inductance Measurement error is excessive when high impedance high inductance small capacitance is measured Stray capacitance between High and Low leads Small Capacitance Stray capa
58. ment this indicator is also lit however D or Q indication has no meaning and D Q display is left blank D Q Display Value for dissipation factor or quality factor is displayed in capacitance and or inductance measurement In resis tance measurement this display is kept blank RANGE Indicator The range automati cally or manually selected is indicated by LED lamp The table printed above the LED array shows the measurement ranges of the Model 42624A TEST SIGNAL These pushbuttons enable selection of measurement frequency 120Hz 1kHz or 10kHz and that of low test voltage of the signal applied to sample to be tested LOW LEVEL switch is effective only in parallel capacitance measurements Supplying a test voltage of 50mVrms For units equipped with option 010 arrow on pushbutton 120Hz points to 100Hz Figure 3 1 Front Panel Features sheet 1 of 2 Model 4262A TRIGGER These pushbuttons select trig ger mode INT EXT or HOLD MANUAL INT key provides internal trigger which en ables instrument to make repeated auto matic measurements In external trigger mode EXT trigger signal should be ap plied to either of following two con nectors 1 EXT TRIGGER input con nector on the rear panel 2 50 pin con nector of Option 001 or 004 on the rear panel HOLD MANUAL trigger mode pro vides trigger signal for one measurement cycle when this key is depressed LOSS These pushbuttons select whether D or Q
59. nce value refer to REFERENCE DATA Accuracy applies over a temperature range of 23 C 5 C At 0 C to 55 C error doubles 1 4 Sameas RF Mode Minis ei aiheeeeneti Model 4262A Section I Table 1 1 Table 1 1 Specifications Sheet 4 of 4 OPTIONS Option 001 Simultaneous BCD output of LCR and DQ data positive true Max sink current 16mA Mating connector P N 1251 0086 Alternate BCD output of LCR and DQ data selectable by switch on internal board Option 004 Digital comparator can not be used with OPT 101 Compares meas ured value with high and low limit set tings for LCR or DQ and provides HIGH IN LOW comparison outputs Limit setting range 0000 1999 for each limit switch Can arison output Vina way contact nn and TTL level Visual 3 LED s indicate HIGH red IN green or LOW red Relay contacts SPST contacts to circuit common for each HIGH IN and LOW output TTL level Open collector circuits to high level open for each HIGH IN and LOW outputs fanout max 30mA Option 101 HP IB data output amp remote con trol Remotely controllable functions Function L C R ESR 4LCR Loss D Q LCR range DQ range Circuit mode Test frequency amp level Trigger Self test Data output C D Q L D Q R ESR Internal function allowable subsets SH1 AHi T5 L4 RL1 DCl SRI and DTI Data output format Either of two formats may be selected
60. ntrols 0 0022 eee any setting 4 Read displayed value after allowing time for bias voltage to settle Typical settling times are 120Hz 6 to 7 seconds 1kHz 10kHz 2 to 3 seconds BIAS VOLTAGE SETTLING TIME Opererar a TREE aE eae e ees om EY me ee EE EI A a Omar m E SA E D mE el am a BON m BIS iz A iO m a a mn St aan 15 L SOROS DEN EG SA UN i 55 ANT TOR SE ON WA AIA I E RERE 2 A 5 ey a Oe ee EINE gt is 5 Beil ei m Settling Time In Seconds Ei a am IE 1004 1000 4 Io Capacitance Reading F If Cj and Ri which are larger than those given in table on above are connected longer settling times are necessary Figure 3 9 External DC Bias Circuit Sheet 2 of 3 Section II Figure 3 8 3 21 Section III Model 4262A Figure 3 8 Using Current Bias for inductors 1 Connect de power supply as shown below Note DC power supply should be floated from ground If cable between low terminals of 4262A and DC AMMETER power supply is relatively long it should be shielded cable The outer conductor is con nected to GUARD terminal TO DC BIAS Connector 2 Set 4262A controls as follows DO BIAS N a saa ee FEROS MC EXT FUNCTIONS essen ah L CIRCUIT MODE oi aes n rear PRL or SER LER RANGE 22 2 2 ee MANUAL Other controls 2 2 cee one any settings Note First determine appropriate range by connect ing sample with no dc bias
61. o 0 3 72 Device Clear Capability DC1 The 4262A is set to initial conditions the same conditions that are automatically set after turn on of power switch when it accepts DCL Device CLear command universal command or SDC Selected Device Clear addressed command 3 73 Device Trigger Capability DT1 The 4262A is triggered regardless of TRIGGER switch setting when it accepts GET command ad dress command 3 74 ADDRESS Switch ADDRESS switch on the rear panel sets Listen Talk address Five section or five bit switch provides 30 settings from 00000 to 11110 A5 A4 A3 A2 Al 0 0 0 0 OO eee 0 LoL 2 1 0 ese 30 3 75 Remote Message Coding Interface Bus Command signals for the 4262A are listed in Table 3 61 Model 4262A
62. off set adjustments steps 4 5 6 and 7 at 10kHz 8 Remove shorting lead from 160614 9 Select desired FUNCTION either L C or R ESR 10 Connect sample to be measured L C or R to Test Fixture 11 Model 4262A will automatically display value of unknown Note If O F U CL minus or blank display occurs see Table 3 3 for solution Measured values for semiconductor devices are sometimes unreliable when TEST SIGNAL LOW LEVEL pushbutton is in its normal 1V state button lamp is not lit In these instances follow Figure 3 8 for semiconductor device measurement Note If manual triggering is required press HOLD MANUAL button Each time the button is pressed the instrument is triggered 12 If internal DC bias is required set DC BIAS switch to 1 5V 2 2V or 6V If not OFF position should be selected Note DC bias application may only be used for capa citance measurements CAUTION POSITIVE POLE OF ELECTROLYTIC CAPA CITOR MUST BE CONNECTED TO HIGH TERMINALS AS PLUS BIAS VOLTAGE IS APPLIED TO HIGH TERMINALS WITH RE SPECT TO LOW TERMINALS Note An external bias voltage up to 40V may be applied to EXT DC BIAS rear panel connector Connect DC power supply to EXT DC BIAS connector Set DC BIAS switch to EXT Model 4262A Section III Figure 3 6 CAUTION EXTERNAL DC BIAS AT EXT BIAS CON NECTOR MUST NEVER EXCEED 40V 13 Read measured value on display Note It is usually recommended that the LCR
63. on 3 65 HP IB INTERFACE CAPABILITIES The 4262A Opt 101 has the following eight bus inter face functions SH1 Source Handshake Capability AHI Acceptor Handshake Capability T5 Talker the 4262A sends measurement data to the bus L4 Listener the 4262A receives remote control signals from the bus SR1 Service Request Capability RLI Remote Local Capability DC1 Device Clear Capability DT1 Device Trigger Capability 3 66 Source and Acceptor Handshake SH1 AH1 Three Bus handshake lines DAV NRFD and NDAC perform Source and or Acceptor hand shake functions 1 DAV DAta Valid DIO Data Input Out put line is available 2 NRFD Not Ready For Data Listener preparation for receiving data from Talker is not yet completed Model 4262A 3 NDAC Not Data Accepted Listener has not yet received data from Talker 3 67 Talker Capability T5 When set to Talker by MTA My Talk Address signal from controller the 4262A sends measure ment data to the Bus in one of three types of out put formats Type A Ordinary output format Address switch on the rear panel set to FMT A S FC F NN NNE NN SF N NNN CRLF Hoe emer yas 1 2 3 4 SE 7 8 Type B Output format used for Model 5150A HP IB Digital Recorder Address switch on the rear panel set to FMT B S FC F NN NNE NN CRLF S F N NNN CRLF aun spyder en RIOR x ees 1 2 3 4 8 6 7 8 Type C Output forma
64. ont etz Where n stands for a free integer FigureA SelaRonahips between Parallel and Series Parameters Figure 3 5 Conversion Between Parallel and Series Equivalents Model 4262A oo Parallel Capacitance Parallel Resistance Section III Figure 3 5 Reg ft RN 0 SAAL 5 IN AN Bi NN RASS RRR TRAIN LINDA Series Inductance Series Resistance B 27 CLA SUNNU KREBS SENNEC RE 10 O cp F Cs F Series Capacitance Series Resistance C D When n represents a free integer To obtain the graph for 10kHz test frequency add 1 to n on resistance scales Figure 3 6 Relationship of Dissipation to Series and Parallel Resistance 3 13 Section IH Model 4262 A Table 3 3 Table 3 3 Annunciation Display Meanings FUNCTION has been inappro priately set Change 4262A FUNCTION to L C or R suitable for the sample being measured that DQ measurement has been omitted CIRCUIT MODE AUTO LCR RANGE AUTO Try changing TEST SIGNAL to 120 1k or 10kHz Set 4262A DQ RANGE to AUTO Try changing TEST SIGNAL to 120 1k or 10kHz Measured D Q value exceeds the upper range limit 1999 counts Accuracy of LCR readings may not be within specifications CIRCUIT MODE setting is not suitable for the sample being measured B G F overflowed Set 4262A to CI
65. r three terminal measurement 3 8 Model 4262A 3 19 D Q Blanking Function Switch selectable function inside cabinet 8 20 The D Q blanking function permits deac tivating the D Q measurement as desired If op erator has no need of D Q measurement data and alternatively desires to make higher speed LCR measurements the switch for this function may be set When the D Q function is deactivated meas urement time is shortened to approximately 220 to 250 milliseconds at 120Hz and to 80 to 110 milliseconds at 1kHz and 10kHz as compared to standard measuring times which includes a D Q measurement The D Q deactivating switch is located on the A23 board assembly To select this function change setting of the switch as follows a Remove top cover b Take out A23 board red and orange colored extractors c The selection switch is mounted near left edge of the A23 board d Change position of the switch as illustrated below e Reinstall the A23 board in its normal position f Replace top cover D Q blanking HPIB a CMP pe normal 3 21 General Component Measurement 3 22 Figure 3 7 shows the operating procedures for measuring an L C or R inductance capaci tance or resistance circuit component Almost all discrete circuit components inductors capacitors or resistors Jexcept for components having special shapes or dimensions can be measured with this setup Special components may be measu
66. red by using Test Leads 16062A or 16063A or by specially designed user built fixtures instead of 16061A Test Fixture Section II Paragraphs 3 19 to 3 29 3 23 Semiconductor Device Measurement 3 24 The procedures for using the 4262A semi conductor device measurement capabilities are des cribed in Figure 3 8 For example the junction interterminal capacitance of diodes collector output capacitance of transistors etc can easily and accurately be measured with and without de bias 3 25 External DC Bias 3 26 A special biasing circuit using extemal volt age or current bias as needed for capacitor or in ductor measurements is illustrated in Figure 3 9 The figure shows sample circuitry appropriate to 4262A applications Biasing circuits must avoid permitting de current to flow into the 4262A as de current increases the measurement error and the excess current sometimes may cause damage to the instrument When applying a dc voltage to capacitors be sure applied voltage does not exceed maximum working voltage and that you are observ ing polarity of capacitor Note that the external bias voltage is present at Hcurand Hror terminals 3 27 Bias Voltage Settling Time When a meas urement with dc bias voltage superposed is per formed it takes some time for voltage across sample to reach a certain percentage of applied desired voltage Figure 3 9 shows time for dc bias voltage to reach more than 99 of applied vol
67. ror doubles Note C accuracy for higher D values are unspecified 1 3 Section I Model 4262A Table 1 1 Tabie 1 1 Specifications Sheet 3 of 4 L D L Q MEASUREMENT 120Hz 1000uH 10 00mH 100 0mH 1000mH 10 00H L 1kHz 100 0uH 10002H 10 00mH 100 0mH 1000mH 10 00H 10kHz 10 00uH 100 04H 1000uH 10 00mH 100 0mH 1000mH 10 00H Doo 001 19 9 2 Ranges 0 05 1000 4 Ranges 40mA 10mA imA 100A 10pA at 10x81 0 2 2 counts At 120Hz 1kHz 0 2 2 counts At 10kHz At 12007 Tee At 10K 0 2 3 200 Lx counts At 120Hz 1kHz 0 5 3 200 Lx counts At 1kHz Same as mwe _ Mode Sameas F Mode 1 Calculated from D value as a reciprocal number 2 Typical data varies with value of D and number of counts 3 of reading counts Lxis inductance readout in counts This accuracy only applies for D values to 1 999 Accuracy applies over a temperature range of 23 C 5 C At 0 C to 55 C error doubles R ESR MEASUREMENT 10 002 100 02 10002 10 00k2100 0ka oa no V cl 1 Test Signal lmA 1004A i0uA Accuracy 2 AUTO 1 Typical data varies with number of counts 2 of reading counts 3 0 5 2 counts on 10 00MQ range at 10kHz Measurement range for ESR equivalent series resistance is from 1mQ to 19 99k2 typical which varies with series capacitance and inducta
68. s TEE 3 28 External Triggering ee Option 101 Only isis dee esses es 4 25 ii List of Tables Model 4262A Last of Illustrations LIST OF TABLES Number Title Page Number Title Page 1 1 Specifications Bader 1 2 5 1 Adjustable Components 5 2 1 2 General Information 0 1 6 5 2 Factory Selected Components 5 3 1 3 Equipment Available 1 9 5 3 DUT s Recommended for 1 4 Recommended Test Equipment 1 10 Making Adjustments 5 4 5 4 Adjustment Requirements 5 5 2 1 Option Components 00 2 8 6 1 List of Reference Designators and Abbreviations suras 6 1 3 1 Test Signal Level sseeeeeee 3 6 re ar 3 2 Measurement Ranges se eeveeee 3 6 Be eee at eee Hee erie ae K 6 4 Option 010 Modification h 24 3 3 Annunciation Display Meanings 3 12 71 Manual Ch by Serial Numb 7 1 3 4 Unusual Operating Indications 3 210 779 P ue a y T ber ee ea 3 60 Remote Program Codes sone 3 32 pe u Me GES OE a 3 61 MG eet roseo ua Remote Message Coding Snag 8 1 Currently Available Options 8 14 5 8 2 Symptoms Likely to Mislead 8 18 4 1 Recommended Components for 8 3 Front Panel Symptoms of Internal Accuracy Checks eae wes 4 6 Control Misadjustment 8 19 8 4 Front Panel Isolation Procedure 8 20 LIST OF ILLUSTRATIONS Number Title Page Number Title Page l 1 Model 4262A
69. ssed as follows Cx I w2Cxlres Cm Cx or re nz w2CxLres Cm Lx 1 w2LxCst LM Lx n or u e w2LxCst Lm In a 10kHz measurement for the measure ment error to be less than 0 1 the pro duct of Cx and Lres Lx and Cst should be less than 0 25 x 10 12 The relationship between the residual factors of the test jig and measurement accuracies are graphically shown in Figure 3 4 The 4262 A ZERO ADJ controls cover the following capacitance and inductance offset adjustment ranges C ZERO ADJ up to 10pF L ZERO ADJ up to 1uH An offset adjustment should always be performed before measurements are taken OH OOuF emme ii NS D S ee ee tm HESS SH Inductance w O amp a O Q oO MENE H HER Fe N NE ren IH 0 01 Residual 0 1 Inductance Stray Capacitance Figure 3 4 Measurement Error due to Misadjusted ZERO ADJ Controls 3 11 Section II Model 4262A Figure 3 4 Measurement Parameter Conversions Parameter values for a component measured in a parallel equivalent circuit and that measured in series equivalent circuit are different from each other For example the parallel capacitance ofa given component is not equal to the series capa citance of that component Figure A shows the relationships between parallel and series para meters for various values of D Applicable dia grams and equations are given in the chart For example a parallel capa
70. t used in resistance meas urement or LCR ONLY measurement when no D Q data is to be outputted Selection of this format is automatically done in accordance with FUNCTION switch setting S FC F NN NNE NN CRLF ve 3 4 8 The numbered elements of output data are des cribed below 1 Status Neue Ores Sew ee Normal 3 IE E ares Overflow E ates E be Bae east aa Uncal gt TEE LCRNA or DNA NA Not Available 2 Function and Circuit Mode FUNCTION MEASURE CIRCUIT MENT MODE CP C PRL Cs C SER LP L PRL LS L SER RP R PRL RS R ESR SER 3 Frequency 7 CETE ger 120Hz 100Hz Die sug apace 1kHz Vers 10kHz Model 4262A 4 LCR Data 5 Data Delimiter 6 Loss Dak ae Dissipation Factor measurement 1 ice dog Quality Factor measurement 7 DQ Data 8 Data Terminator 3 68 Functions Related to Talker Capability EOI End Or Identify When multiple byte data of Source Handshake has been sent the 4262A provides EOI to the bus Talk Only Mode When ADDRESS switch is set to TALK ONLY 1 position the 4262A is set to Talker regardless of address code x ONLY FMTB DD00000 ADDRESSABLE AS A un ADDRESS FMTA Talk Address Disabled by Listen Address MTA My Talk Address is automatically disabled when MLA My Listen Address is set MTA My Talk Address is otherwise disabled by IFC Interface Clear signal OTA Other Talk Address signal or UTA Untalk Address signal 3 69 Listener Capabilit
71. tage and for 4262A to display a stable value If the bias voltage across sample is not given suffi cient time to settle the displayed value may fluctuate or O F may be displayed Read measured value after display settles 3 28 External Triggering 3 29 For triggering the 4262A externally connect an extemal triggering device to the rear panel EXT TRIGGER connector BNC type and press EXT TRIGGER button The 4262A can be triggered by a TTL level signal that changes from low OV to high level 5V Triggering can be also done by alternately shorting and opening the center con ductor of the EXT TRIGGER connector to ground chassis Note The center conductor of the EXT TRIGGER connector is normally at high level no input 3 30 TERMINAL CONFIGURATION 3 31 Connection of DUT The 4262A Unknown terminals consists of five binding post type con nectors Hew Heor Leur Leor and GUARD By connecting the stationary shorting straps to appropriate terminals the UNKNOWN terminals can be adopted for the desired measurement ter minal configuration the two three four or five terminal method For measurements of samples having a medium order of impedance 1002 to 10k the convenient two terminal methodis suited to measurement re quirements for good accuracy as well as for ease in connecting the sample When converting to two terminals shorting straps are attached to the UNKNOWN Hcur and Hpor terminals and Lcur and Lpor
72. tch is set to AUTO depressing COMPARATOR EN ABLE switch changes LCR or D Q RANGE switch setting to MANUAL If AUTO key of LCR or D Q RANGE switch is depressed while COMPARATOR ENABLE switch is ON one measurement cycle is done in AUTO ranging and the range is fixed to that selected in this meas urement cycle 3 52 LIMIT Setting Warning If HIGH LIMIT setting is lower than LOW LIMIT setting HIGH and LOW lamps of decision output repeatedly turn ON and OFF to warn operator to change LIMIT setting 3 53 DATA OUTPUT Connector Decision Output Decision outputs in TTL open collector signal and in relay contact are supplied through COMPARA TOR OUTPUT connector on the rear panel Signal pin assignment is given in Figure 3 44 WARNING DO NOT APPLY AC LINE VOLT AGE TO RELAY OUTPUT CON NECTOR PIN TO SWITCH LINE CURRENT For suchrelay appli cations remotely control an ex ternal relay with relay output COMPARATOR END FLAG LER Decision Output LCR HI T LCR LOR LER Hi R LER IN T LCR IN R EXT TRG LCR COMMON R DQ COMMONIR Figure 3 44 Comparator Data Output Pin Locations Section III Paragraphs 3 52 and 3 53 Relay Contact Ratings a BEE IGE Contact Resistance 100m2 100m2 Maximum Permissible Maximum Permissible Maximum Permissible gt 10 million Decision Output Data Format Actuation Life Relay output pins TTL output pins Decisions DQ LCR DQ LCR DQ LCRID LCRIDQ LCR
73. terminals respectively High impedance samples greater than 1k which includes low capacitance high inductance and high resistance should be measured by the three terminal method to eliminate the effects of stray capacitances on the measurements For this purpose the guard conductor of the sample is connected to the instrument GUARD terminal In the measurement of low impedance samples less than 1k efforts should be made to elimi nate the effects of contact resistance lead resist ance residual inductance and other residual parameters in the measuring apparatus Four terminal configuration measurements allow stable accurate measurement of high capacitance low inductance and low resistance samples at mini mum incremental errors in the measurement of low impedance samples In the four terminal method the shorting straps are disconnected to separate potential leads from current leads Thereby the characteristics of the sample can be precisely determined by the instrument irrespec tive of the various residual parameters present in the measuring signal current path To ensure the best accuracy the potential leads should be con nected near to the sample The five terminal method which adds the guard conductor to the four terminal configuration ex pands the applicable measurement range into the higher impedance regions Thus this method covers a broad range of measurements from low to high impedance samples at the meas
74. tter NORMAL printed number for DATA is 2000 When annunciation is other than These are not displayed Note Figure in circle indicates column number 4262A 3 28 Model 4262A Section IH Figure 3 41 Parallel output EXTERNAL ENCODE from external device FLAG to external device INHIBIT from external device Measurement Data transfer storage cycle cycle Alternate output EXTERNAL ENCODE from external device FLAG to external device INHIBIT from external device PL Measurement LCR data D Q data cycle transfer storage transfer storage cycle cycle NOTE Assert INHIBIT while FLAG is asserted The BCD output will be maintained until INHIBIT goes HIGH Figure 3 41 Timing Chart of BCD Data Output 3 29 Section II Paragraphs 3 49 to 3 51 3 49 3 50 OPTION 004 COMPARATOR The 4262A Option 004 shown in Figure 3 43 provides a b c 3 51 1 2 3 3 30 HIGH and LOW limits setting for com parison of LCR and D Q measured data LED visual decision output lamps display of results of HIGH and LOW limit com parisons TTL outputs and relay outputs for HIGH IN and LOW decision outputs Front Panel Features Figure 3 42 LCR LIMIT Switch Two four digit switches provide HIGH and LOW limit values with which measured LCR value is compared Setting range is from 0000 to 1999 LCR Decision
75. uring fre quency of the 42624A When test fixtures and test leads used havea Shielding conductor and are designed to consider residual impedance the measurement limitations described above for the individual terminal con figurations can vary to some extent depending on the particular characteristics of the fixture and connections Three accessories the 16061A Test Fixture the 16062A Test Leads and the 16063A Test Leads are available The characteristics of these accessories and applicable measurement ranges are Outlined in Figure 3 3 These acces sories make it easy to construct the desired ter minal configuration 3 10 IMPORTANT FOR CERTAIN TERMINAL MEAS UREMENT CONFIGURATIONS THE Hcur TERMINAL MUST BE CON NECTED TO Hror TERMINAL AND THE Lcur TERMINAL CONNECTED TO THE Lror TERMINAL OTHER WISE THE DISPLAYS WILL HAVE NO MEANING AND THE LIFE OF THE RELAYS USED IN THE INSTRU MENT WILL SOMETIMES BE SHORT ENED Note The 4262A can not measure a sample which has one lead connected to earth grounded 3 32 OFFSET ADJUSTMENT 3 33 Since test fixtures and test leads have different inherent stray capacitances and residual inductances the measured value obtained with respect to the same sample may possibly differ depending on the test fixture leads used These residual factors can be read from the 4262A dis play by properly terminating short or open the measurement terminals of the test jig The front pan
76. value is displayed in the D Q display 6 in capacitance or inductance measurements D Q RANGE These pushbuttons select ranging method for loss measurement AUTO Optimum D Q range is selected by internal logic circuit MANUAL D Q range is fixed to a range Range change is done by depressing the STEP key on the right CIRCUIT MODE Appropriate circuit mode for taking a measurement is select ed and set with these pushbuttons A parallel equivalent circuit is selected by PRL key and series equivalent circuit by SER key When AUTO key is pushed the instrument automatically selects the appro priate parallel or series equivalent circuit FUNCTION These pushbuttons select electrical circuit parameter to be measured as follows C Capacitance together with dissipation factor D or quality factor Q L Inductance with dissipation factor D or quality factor Q R ESR Resistance or Equivalent Series Resistance ALCR Difference in L C or R value be tween the value of the sample under test and the internally stored value obtained by a measurement just before LCR key is depressed LCR RANGE These pushbuttons select ranging method for LCR measurement AUTO Optimum range for the sample value is automatically selected Section III Figure 3 1 MANUAL Measurement range is fixed even when the sample connected to the UNKNOWN terminals is changed Range change is done by depressing DOWN or UP key on the right
77. ver c Follow the appropriate paragraph below 2 31 OPTION 001 BCD DATA OUTPUT a Remove the left side middle and lower blind INSTALLATION covers from the rear panel Install two 50 pin connector assemblies in the openings Set BCD switch of SWI on A23 board assembly RED ORANGE GUIDE P N 04262 66523 or 04262 66623 from OFF to opposite position This board is located third from front on the right side Connect cable attached to A23 board shown below between A23 and A35 BCD Option board assemblies P N 04262 66535 Install A35 in RED GREEN GUIDE option receptacie Plug 2 each flat cable assemblies from A35 BCD Option board into connector boards of rear panel connector assemblies f Install instrument top cover 2 6 Model 4262A 2 32 OPTION 004 COMPARATOR INSTALLATION Refer to Fig 2 4 for installation procedure 2 33 COUPLING OPTION 004 COMPARATOR WITH OPTION 001 BCD DATA OUTPUT INSTALLATION a Set CMP comparator and BCD option switches of SW1 ON A23 board assemblies RED ORANGE GUIDE P N 04262 66523 or 0426266623 from OFF to opposite position This board is located third from front on the right side Connect cables attached to A23 board be tween A23 and A24 comparator option BCD board assembly No other cable assembly gt change is necessary for this combination of options Refer to Paragraphs 2 31 and 2 32 for other installation procedures 2
78. vr ige bs Std 1 2 33 Coupling Option 004 Comparator 3 74 rn DT1 nee with Option 001 BCD Data 3 75 R te M Cc di WER 3 36 Output Installation 2 6 BEARS nn Ee COMME Saves oe 2 34 Option 101 HP IB Remote Control and Data Output Installation 2 6 V 417 Mmtroduetlonee LA 4 3 Equipment Required 2 2000 Ari 4 5 Test Record csccdsccvscsesesee 421 EI OPERATION Sansa pete Sal 4 7 Calibration Cycle sssssseeeseee 4 1 3 1 Introduction eet eier Sal Preliminary Operations von 4 2 3 3 Panel FeatureS scceseee 3 1 Calibration of DUT S e02 4 4 3 5 Self Test Basic Operating Check 3 1 4 9 Measurement Frequency Test 4 7 3 7 Test Signals sennaeeseneen 396 4 10 Capacitance Accuracy Test es 3 9 Measurement Range 3 6 4 11 Resistance ESR Accuracy Test 4 12 3 11 Initial Display Test 0 2 3 7 4 12 Dissipation Factor Confirmation Check 4 14 3 13 Initial Control Settings 3 7 4 13 Inductance Accuracy Test 4 17 3 15 D Q Measurement eee 4 14 Internal DC Bias Source Test 4 19 3 17 LCR Measurement 3 7 Eee oui are ae 3 19 i6 omparator Tes tion ly 4 9 D Q Blanking Function Switch 4 11 HP IB Interface Test ee gt oO CO selectable function inside cabinet 3 21 General Component Measurement 3 23 Semiconductor Device Measurement 3 25 External DC Bia
79. y L4 To receive Remote Program signal or Addressed Command signal the 4262A is set to Listener by an MLA My Listen Address signal from the bus 1 Remote Program signal Remote program codes for the 4262A are listed in Table 3 60 2 Addressed Command simal When the 4262A receives command signals GET GTL or SDC it is set to Listener and con trolled by command signalis These command signals are valid regardless of the status remote or local GET Group Execute Trigger When the 4262A receives this command it is trig gered regardless of front panel TRIG GER switch setting GTL Go to Local The 4262A is set to LOCAL by this command to enable front panel control Section IH Paragraphs 3 68 to 3 70 SDC Selected Device Clear When this command is accepted front panel con trols are set to initial conditions the same conditions that are automatically set after turn on of power switch Listen status is automatically disabled when MTA My Talk Address is received Listen status is otherwise disabled by IFC interface Clear signal or ULA Unlisten Address signal 3 70 Service Request Capability SR1 The 4262A sends an SRQ Service Request signal whenever it is set in one of the six possible RQS Request Status states It does this by responding to a serial poll of the controller by setting an STB Staus Byte signal on the bus The 7th bit of this 8 bit signal establishes whether or not a service r

HP 4262A User's Manual

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