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HP 400F Operating And Service Manual Download Page 48

MODEL 

400F/Fl 

INDEX  OF  MANUAL  CHANGES 

HAMlAL 

OWfGE 

Al 

A2 

fRAME 

Cl.2,3,6  C5.18,22,  KP24.30. 

1 

C41,6 

HP31.32 

CR22,Q3  OSI, 

53 

�5.IO,60 

R69 

2 

MPS 

HPl,2,3,4 

3 

HP6.7,12, 

HP13.24 

8tndtng  -

Post  . 

4 

.  C2.S3,4 

.  1; 

, 

, 

: 

'age  2 

Summary of Contents for 400F

Page 1: ...ebsite of Cornell Law School at http www4 law cornell edu uscode 17 107 html and is here reproduced below Sec 107 Limitations on exclusive rights Fair Use Notwithstanding the provisions of sections 106 and 106A the fair use of a copyrighted work includ ing such use by reproduction in copies or phono records or by any other means specified by that section for purposes such as criticism comment news...

Page 2: ...Verso Filler Page ...

Page 3: ...400F FL AC VOLTMETER OPERATING AND SERVICE MANUAL HEWLETT PACKARD ...

Page 4: ... in materials and workmanship This warranty applies for one year from the date of delivery or in the case of certain major compo nents listed in the operating manual for the specified period We will repair or replace products which prove to be defective during the warranty period provided they are returned to Hewlett Packard No other warranty is expressed or implied We are not liable for consequen...

Page 5: ...RT NO 00400 90005 MODEL 400F FL AC VOLTMETER SERIALS PREFIXED 734 Appendix C Manual Backdating Changes adapts this manual to serials prefixed 617 Copyright Hewlett Packard Company 1966 P O Box 301 Loveland Colorado 80537 U S A Printed JAN 1968 ...

Page 6: ...Verso Filler Page ...

Page 7: ...ion 5 4 5 32 Attenuator Alignment 5 5 5 34 A2Ql Bias Adjustment 5 5 5 36 Replacement of A2C37 5 5 5 39 Troubleshooting Procedure 5 5 5 44 Power Supply 5 6 5 46 AmplUiers 5 6 5 48 Meter Bridge 5 6 5 50 Etched Circuit Board Repair 5 6 Section VI SCHEMATIC 6 1 Introduction Section vn REPLACEABLE PARTS 7 1 Introduction 7 4 Ordering Information 7 6 Non Listed Parts Appendix A CODE LIST OF MANUFACTURERS...

Page 8: ...meg ohms shunted by 10 pF on the 1 V 300 V ranges Amplifier AC Output 1V rms open circuit for full scale meter indication output imped ance 600 oluns 20 Hz to 4 MHz Meter Response O 7 seconds after application of signal 1 0 hp Model 400F FL Recovery From Overload 2 seconds for 80 dB overload AC Power 115 or 230 volts 10 50 to 1000 Hz 5 watts External Battery Operation Terminals are pro vided on re...

Page 9: ... at the top of the meter face for better resolution 1 6 INSTRUMENT AND MANUAL IDEN TIFATION 1 7 Hewlett Packard instruments are identified by a two section eight digit serial number 000 00000 If the first three digits of the serial number on your instrument do not agree with those on the title page of this manual change sheets supplied with the man ual will define differences between your instrume...

Page 10: ...olH lOUoI jt mpt lt tu thl mV ttm IJ 1Ih 300 m oI l ln mu I not Ol tttJ th aI J huwn I 10K 201 FREOUENCY Ht AC _np Inp 1 to It 1 V II I o h 300 V flgU mu t nul na 500 V m TI I limit 0 1000 V de m l not be ncud on nv Table 1 2 Performance Characteristics 401 Mot cI4IXJ1 I L 22 v _00 ...

Page 11: ...CH MOUNTING 2 13 The Model 400F FL ls shipped with plastic feet and tilt stand in place ready for use as a bench instrument 2 14 RACK MOUNTING 2 15 The Model 400F FL may be rack mounted by 01795 2 using an adapter frame hp Part No 5060 0797 The adapter frame is a rack frame that accepts any combination of submodular units It can be rack mounted only For additional information address Inquires to y...

Page 12: ...lies primary power LINE Indicator Lamp Indicates application of primary IXlwer 115 230 Volt Slide Switch S4 Selects 115 or 230 volts ac for line operation 14 11 0 r jE h Ll J MOOtL 400F L REAR PANEL o Primary Power Connector Line voltage is ap plied through this connector FUSE Protects instrument against current overload AC OUTPUT Ac amplifier output Output im pedance is 600 n BATTERYVOLTAGE Termi...

Page 13: ...er suspension If pointer moves to the left repeat whole pro cedure but make counterclockwise rotation less 3 7 TURN ON PROCEDURES a If line voltage is used ensure that the 115 230 vac switch located on the rear panel is in the correct position Turn the line ON toggle switch to the ON position The LINE lamp will glow indicating that line power is applied b If batteries are used connect two 35 to 55...

Page 14: ... reading across 100 ohms to dBm lo cate the 100 ohm load impedance onthe bottom of the graph Follow the impedance line to the heavy black line and read the meter correction at that point The correction for 100 ohms is 7 5 dBm and the corrected reading is 47 5 dEmo Model 400F FL 3 10 WIDE BAND AC AMPLIFIER EXTREME CARE SHOULD BE TAKEN TO AVOID COMMON GROUND PATHS BETWEENTHE INPUT AND OUTPUT SIGNALS...

Page 15: ...Model 400F FL Xl Cl Z 0 I U W Il Il 0 U Il W I W 01795 1 20 15 10 5 0 5 10 15 20 25 I 10 100 IK 10K IMPEDANCE OHMS Figure 3 3 Impedance Correction Graph Section m lOOK 400E EL4 0471 3 3 ...

Page 16: ...Section IV Figure 4 1 4 0 O 1 NO 0 0 ModeI400F FL u 0 8 0 j JO W t 01795 1 ...

Page 17: ...n impedance matcher to match the high impedance of the input attenuator to the much lower impedance of the post attenuator 4 11 Capacitor A2C5 blocks dc transients and couples the ac Signal to the preampllIler The input signal is Umited to 5 4 volts peak ta peak by diodes A2CR2 andA2CR4 which are biased at 2 7 v and 2 7 v respectively by zener diodes A2CR1 and A2CRS A field effect transIstor A2Q1 ...

Page 18: ... is an _ _____ IMETER CPl IFIER A2 R60 ModeI 400F FL independent current source which will supply a signal to the OUTPUT terminal that is identical to the signal applied to the meter bridge That is for a 1 v rms signal for Cull scale meter deflection A2Q14 will provide a 1 v rms signal at the AC OUTPUT terminal 4 22 METER BRIDGE 4 23 Refer to Figure 4 3 for a simplUied diagram of the metering circ...

Page 19: ... to 55 v or line power 115 v or 230 v 50 Hz to 1000 Hz 01795 1 Section IV Paragraphs 4 26 to 4 30 4 29 The line input is converted to dc by a diode rectifier network consisting ofA2CR6 through A2CR9 The positive output of the rectifier is applied to series regulator A2Q4 which regulates the 26 v supply Control transistor A2Q6 has a constant emitter reference voltage supplted by zener diode A2CR12 ...

Page 20: ...OR hp 738BR 0 0 4 lJ 0 Q 0 rT 0 0 008 0 c I TEST OSCILLATOR hp652A 1I g o XII fL O USE Performance Checks and Calibration Performance Checks and Calibration Troubleshooting Performance Checks Performance Checks and Calibration Shorting Test Points I I L_ Figure 5 1 Accuracy a nd Frequency Response Check Setup 5 0 Model 400F FL RECOMMENDED MODEL hp Model 738BR Volt meter Calibrator hp Model 652A Te...

Page 21: ...A and hp 73SBR combination Figure 5 2 shows the test setup for using the K02 73SBR VTVM Calibration System 01795 1 NOTE The 0 1 mv range of the 400F FL may be checked for accuracy by verification of the additional 10 db of gainthatis provided by the meter amplifier on that range In order to verify the gain the top cover of the instrument must be removed to gain access to TPl through TP4 5 10 TOP C...

Page 22: ...ain tain the set reference whenever frequency of osc11lator is varied k Repeat step d of this paragraph for each fre quency Hsted in Table 5 2 400F or Table 5 3 400FL m Perform steps eandfof this paragraph main tainingthe output amplitude of the test oscil lator at 30 my n Repeat step d of this paragraph for each fre quency listed in Table 5 2 400F or Table 5 3 400FL o Set 400F FL RANGE sw itch to...

Page 23: ... FL d Connect a 100 K n resistor between test os cillator and 400F FLas shown in Figure 5 3 01795 1 e 400F FL meter indication should not drop more than one small scale division from full scale This verifies an input resistance of 10 M O 5 18 INPUT CAPACITY CHECK a Connect testoscillator and a 100 K 0 resistor t0400F FL as shown in Figure 5 3 Connect the resistor lead directly tothe GR connector b...

Page 24: ...s such as soldering and component replacement 5 23 TOP OR BOTTOM COVERS a Remove screw at rear of cover Slide cover about 1 inch to rear and lift it off b To replace cover reverse the removal pro cedure AICZ UOOKHz IV CALl AIR7 400Hz IV CALl A2R6 AZQI BIAS AOJI A2R 9 20HI 3OMV CAL 5 24 SIDE COVER 5 25 Remove the lour screws from side cover and lift it off 5 26 METER MECHANlCAL ZERO ADJUSTMENT 5 27...

Page 25: ... attenuator alignment a Set switch S1 to Position A b Set 400F FL RANGE switch to 1 volt and set 100 KHz L P FILTER switch to OUT c Adjust voltmeter calibrator for a 1 volt output at 400 Hz d Adjust AIR7 for a 400F FL meter indication of 1 volt e Set switch SI t o position B f Set test oscillator for a 400F FL meter indi cation of 1 volt at 400 Hz g Set testosclllator tol00 KHz maintaining the amp...

Page 26: ...or Q4 41 5 v 5 v Collector Q6 27 5 v 1 v Emitter Q8 26 0 v 1 v Emitter Q9 43 5 v 5 v 5 46 AMPLIFIERS 5 47 Both the preamplifier and the meter amplifier are internally dc coupled If the dc voltages anywhere in the amplifiers are incorrect the amplifiers will not operate properly Measure the dc voltages in the amplifiers at the check points listed in Tables 5 6 and 5 7 5 6 PROBABLE TROUBLE Fuse FI o...

Page 27: ...ndthen remove the leads from the board 01795 1 Fl lE 3 EXCESSIVE OR PROLONGEDHEAT CAN UFT THE CIRCUIT FOIL Section V Paragraph 5 51 Coni d FROM THE BOARD OR CAUSE DAMAGE TO COMPONENTS c Cleanthe component lead holesby heating the solder in the hole quickly removing the soldering iron and inserting a pointed non metallic object such as a toothpick d To mount a new component shape the leads and inse...

Page 28: ...Verso Filler Page ...

Page 29: ...el 400F FL Figure 6 1 shows allattenedview o theRANGE switch andpartof the internalwiringdata Figure 6 2 shows 01795 1 the component location on the At and A2 printed cir cuit boards and the location of the internal adjust ments Figure 6 3 is the schematic diagram of the 400F FL Main signal paths and feedback paths are identified Refer to the notes on the schematic dia gram 6 1 ...

Page 30: ...I V I r k K If 0 1 I I I I I I I ff R3 I R2 R4 J I I V J I I I I I I I I I I I I I I I I I I I 110 I I I A I f V I f S I II o n I I I I I L I I I I I I I t I I I I I I I I I I I I I I I I I I J I I I I I AI 2 3 r L CI I I J I I I I I I I I I I I I I I U J I I I I I I I I I I I I I I WHT ORN VIO WHT ORN 1 I bs I I I I I iI I c 5 I I I I C 1 I CR2J l I I I I I I I ri lr J l r I I I I I I I I I R7 I ...

Page 31: ...4 WHT RED VEL B WHT RED 12 WHT A2 BOARD hp Part No 00400 66504 13 BLK 14 BLK 15 BLK 16 VIO 16 Q Or 17 17 VIO 400f Fl B 0646 L _________________ I A I C2 OSI RI 01795 1 Al BOARD hp Part No 00400 66505 MI SI A2R58 A2R62 A2R59 TP4 TP3 TPI LI L2 err II 321 oo e _ ____ FI I TP2 A2C36 S2 TI Figure 6 2 Model 400F FL Component Location ...

Page 32: ...0 02 CZO RZ7 100 4 S4K _f CR02 26 1 IRANGEI 510 F I mo 1mV l O 3mV OZ 1 0mV 03 ModeI400F FL NOTES Section VI Figures 6 2 to 6 3 100 111 I Fl YEIt rOVT DI IWV 1t 1I6E VOI TlI DI V L PARTiAL REFERENCE DESIGNATIONS ARE SH JNN PREF IX WITH ASSEMBLY on SUBASSEMBLY DESIGNATION S OR BOTH FOR COMPLET E DESIGNATION 2 COMPONENT VALUES AR E SHOWN AS FOLL JNS UNLESS DEtlOrES F EEDBACK PATH 1 c J DENOTES RONT ...

Page 33: ...Verso Filler Page ...

Page 34: ...Section vn Figure 7 1 MP iS11 40QF Fl B O O 400F FL RO 7 0 MP7 MPI7 l MP27 Mode1400F FL MPI MP2 MP4 MP26 Figure 7 1 Location of Important Mechanical Parts MP25 01795 1 ...

Page 35: ... lamp M meter S Switch E misc electronic part MP mechanical pan T transformer ABB REVIATIONS ampE res elect electrolytic m mounting encap encapsulated m mylar bp bandpa81 bw backward wave farads NC normally closed oscillator I d f ed N neon carbon N O normally open ceramic G germanium NPO negative poIIUve cabinet mount only d ground ed zero zero temp I coellLcient ature coefficient m common h henr...

Page 36: ... R18 CRI6 R20 through R75 10 e Cxd Ta 4 7 III tlO 35 vdcw 3 e fxd O 002 Ilr 1 20 500 vdcw I C lxd Al elect 1 jJl 7S 10 25 vdcw 2 C Cxd Ta elect 100 III 1 20 10 vdcw I C Cxd cer O 1 Ilf d O _2 50 vdcw I C Cxd 75 pi 1 5 500 vdcw C fxd Ta elect 60 J Lf 20 6 vdcw C xd Ta 4 7 IJ f tlO 35 vdcw I C f xd mica 200 pr t5 300 vdcw e fxd Ta 4 7 if t10 35 vdcw e fxd 0 002 Ilf t20 500 vdcw C fxd Ta 4 7 III 10 3...

Page 37: ... Si 50 ma at 1 v 10 na reverse current 50 wlv 2 pf Diode breakdown 2 67 v 1 10 4 mw 6 Diode SI 100 ma at 1 v 180 wlv IN485B Diode SI 30 ma at 10 v plv 12 pr 2 ns 1 Diode 51 6 98 v 1 2 400 mw Not Assigned Diode SI 30 ma at 10 v plv 12 pr 2 ns Not ASSigned Diode 51 30 ma at 10 v plv 12 pI 2 ns 2 Diode Si IN4392 2 Inductor fxd 20 J h 1 10 1 Transistor FET P channel 7 Transistor Si NPN 2N3904 7 Transi...

Page 38: ... 5 11 K il 1 8 w R fxd prce met f1m 14 7 K il 1 8 w Ro xd prec met f1m 453 ohms i l 1 8 w 2 Ro xd prec met flm 147 ohms 1 liS w R fxd prcc met flm 1 07 K il liS w Ro xd prec met flm lOO ohms il 1 8 w 1 Ro fxd prec met flm 243 ohms 1 1 8 w R fxd prec met flm 14 7 K 1 1 8 w 1 no fxd prec met flm49 9 0hmS il 1 8 w 1 R xd prec met flm 8 25 K il 1 8 w 2 R fxd prec met Hm 19 6 K 1 1 8 w Ro xd prec met B...

Page 39: ...tor 3 hole BP in line 1 Insulator 3 hole BP with locating key 3 B nding Post Ass y red battery voltage 2 1 1 1 1 and ac output Binding Post Ass y black rear panel Shield meter Knob bar with one arrow part of 51 black Knob bar red with pointer part of 5 2 Binding Post Ass y black INPtTt 1 Binding Post Ass y red INPUT 2 Insulator binding post single 1 Insulator binding post single 6 Insulator nylon ...

Page 40: ...1 4 w 1 R Cxd met f1m prec 189 72 ohms to 1 1 4 w 2 R fxd camp ISO ohms tlO 1 2 w Plo RANGE switch assembly SI 1 Switch toggle SPST On None Off 3 amps 25 v 1 Switch slide DPDT 115 230 v 1 Transformer Terminal board silver plated brass 1 Cable 1 power 1 Cable 2 meter 1 Holder use extractor post type MISCELLANEOUS 1 Cord set power smooth black extra limp 7 5 It long 1 1anual operating and service Mo...

Page 41: ... 11 P Uo CoI ___I o C C lI l 1111 C_IoI CO _ 1 mM _ C I I lUll 00 __ C I T M 001 T _Io oo G I 1 _ to I MI CO u CO IUI 0 0 _If toW C 1 I I Col 10 h i o tow c 11111 _ 00 Il00 C It P IoI _ lUll 111 Co _ h L om _ Ite k _1 c tol 111 c COOl 10 C IOoIO tlo c 1 m D C H I m toooo Co _ c C _ 0 010Coo l I 00 _Col W I Ci I m Dolc D G w C 1 15 _ eo_ CoOot _ e _ eoOot IoI In _ III Cool 1 mo l t lt D Co 11 _ 001...

Page 42: ...lIl __ to o _ Ior 111 Go c C _ 1 11 Itl eo u C to 0 T 0 Qot I lo I to INk_I 0 Co _ m T I_ h 1 Ill CIrttM pt t o lie D 10 1 1 m s _ D l c k C I tII 0 11t _ 1 Co C 11 IJ C _ l oO CIk MI1 0 _ C _ t n l l fI AI _ c f _ C _Io e C ft lil C loo tll l t i lOt too c tUlil _ Ut C _ ft m Yr _ t o t WI I C _I I m _ Co CIIIto II 11 1 Ut I Co 10 f_li tllll _ Co COrr l 11011 iO Co _I oQ _ _ D 1 Ill _ Dn POO I 1O...

Page 43: ...outh 8 fnlwood 81 1 14 641 4 50 lWX 314 962 3933 I IEW JERSEl Eatlnto n 1201l 542 0m Ealle U G71J1 391 G lnd Awn t2011 S61 J9JJ I IEW t IUICO Albll lf tut 1III 6 l loml SIi d N E 15OS 25 5586 TWX 910 989 1655 Lu C ueu 18001 114 S Wait Strut 15051 52 2486 IWX SO 524 2I 11 NEW YORIC Ne ork lD02t 236 r t15th Sltut 12121 9 2023 TWX 1 1 5111 4376 RIC Ultr 14623 39 s c W 0 11151473 9500 TWX 510 253 5m P...

Page 44: ... S 6 1te lrU Packlf4 IUli11la S pA P II IO 1I I i Pialll Milconi 25 R Eu TeI 9 12 S U S JAfAN Yokotnr llewrelt Pack d U4 221 0 IsM iw cho Hac hioji Myo hi HIC ioji 0426 1231 19 lints YokO i wi IMII Pacll l 4 No 3 kno re My IU KiUmachl U s lI Nto u Tokyo Tel 403 6511 YoI otnra H lrlt PKk d lid No a Umrill Kit ku Osab Itl 313 0091 yoltoca H eU lICu d Ud Ho 4 3 homt lIimeilr tOO i CniIU ku Nlcoya ItI...

Page 45: ...1 2 3 4 6 8 617 tS 1 Ihru 617 1 525 2 3 4 6 g 7J4 01526thru 734 02775 3 4 t H 912 2776 thru 912 0287S 4 5 6 8 912 2876 thru I 12 2975 S 6 912 2976 thru 912 3475 6 CflANGE NO I Delete diodes A2CR24 through A2CR i from Figure 7 2 Figure 7 3 and Tablc 6 1 Instrument Serial Prehx Molke Milnual Chilnges All 7 r CIIANGE NO 2 Paragrilph 5 30 b change t 6 V Iu 6 V Figure 7 3 Ch lOgc PREAMPLlFIER schcmati ...

Page 46: ...Ilm 953 n t 1 IISW A2R39 0698 4422 R fxd prcc met llm 1 27 kn t 1 IISW A2R40 069S 3488 R fxd prcc met 11111 442 n t 1 1 8W OIANGENO 6 Table 6 1 J4 1251 0148 Connector ac power cord rcccptade 87930 U IOCll 2 MP24 00400 00206 Panel rear h B 12 078 Cord power CHANGE NO 7 nle part numbers lisleo arc for brown instruments TIle part nurilbers for blue instruments arc shown beluw MP22 00400 64 102 MP25 5...

Page 47: ...the following table Of your Instrument 1 prefbr aeri ll llrnber and make the tilted changes to your mInU SIr II rren or If SIr Prefl 011 Setl Q angn s rw 1212G01321 and above 1 120 c o1426 and above 1 2 1202G01591 and above 1 3 1641G01681 and ab ve 1 4 Oct 1976 400F FL July 1974 00400 90016 a ...

Page 48: ...DEL 400F Fl INDEX OF MANUAL CHANGES HAMlAL OWfGE Al A2 fRAME Cl 2 3 6 C5 18 22 KP24 30 1 C41 6 HP31 32 CR22 Q3 OSI 53 5 IO 60 R69 2 MPS HPl 2 3 4 3 HP6 7 12 HP13 24 8tndtng Post 4 C2 S3 4 f p24 1 t age 2 ...

Page 49: ...AA TRltHR 3 C FXO UR a OIUF 80 201 lOOV C FXD CER O lUF Ba 201 SOY C FXD R O 02UF 80 201 600V C FXD MICA 470PF 5S 300V I DIODE HOT CARRIER TRANSISTOR SI NPH R FXO FILM 953 otIt 11 l BW VALUE SELECTED AT mtORY LOWEST VALUI 43 R f O FILM 1 2K IS 1 8N PANEL REAR PANEL FRONT TRiM METER BRACkET COVER RETAIHER lAMP PILOT SWITCH TOGGlE For Instruments equipped with Genlln Schuko Power cable change pcM r ...

Page 50: ...L ASSr REAR INSULATOR BINDING POST BINDING POST BINDING POST BINDING POST BINDING POST BINDING POST HUT NYLON 3 8 32 HOTE The cOIIpOnents 1 hted above can be identified on the dlagrCtl shotm bel MAHUAl awtGE 4 On Tibl 6 1 chlnge the Table of Replaceable Parts to read C2 53 S4 HP24 0160 4048 3101 2147 3101 1740 00400 00246 1510 0038 C FXO 022UF ACROSS J4 SW SPST SW SLIDE PANEL ASSr REAR BINDING POS...

Page 51: ...10 10 MP4 1510 Q011 MP12 1610 Q035 MP13 1510 0036 MP14 0340 Q099 MP15 0340 160 MP24 00400 002 0 To MP3A 1610 Q090 r01 MP3B 1510 0091 TOO 1510 107 T02 1510 Q087 Ta 1510 084 TOt 0340 732 T02 0340 732 oo400 0212 Add MP34 2950 144 T05 CHANGE NO 3 applle to Ial numb 0950A Q9386 Ind abov for th 400F nd 11 111 numb 0960A Q9 6 Ind above for the 400FL Pagt 84 T bl 6 1 Change pa t number and description of ...

Page 52: ... Add to A2C63 hp part number 0698 4468 the following paddIng list 499 nhm 01 0698 4 23 681 Qhm 01 0767 0419 Pig 7 317 4 Flgur 7 2 O1angQ A2 board from hp part number 0Q400 66504 to 0040 66514 CHANGE NO 6 tppll s to lerllll numbers OQSOA1 Z06 and bov for the 400F nd le t 1 numbers 0950Al0176 and lbov for the 400FL P I 6 4 change A2C38 C39 from hp part number 0IB 0393 to 01Bo 2795 C FKd Ta 39UF t 10...

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Page 54: ...HEWLETTitPACKARD 00467 90003 Printed in U SA ...

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