HP 333A Operating And Service Manual Download Page 33 | Manualshive

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Summary of Contents for 333A

Page 1: ... 3 A 3 3 4 A DISTORTION ANALYZER Serial Numbers 333A 1137A03146 and greater 334A 1140A05641 and greater Appendix C Manual Backdating Changes adapts this manual to lower serial numbers WARNING I Tohelp minimize thepossibility of electricalfire or shock hazards do not expose thisinstrument to rain or excessive moisture Manual Part NO 00333 90008 Microfiche Part No 00333 90058 prlnttd October 1975 19...

Page 2: ...to hp from another country Hewlett Packard warrants that its software and firmware designated by hp for use with an instrument will execute its programming instructions when properly installed on that instrument Hewlett Packard does not warrant that the operation of the instrument or software or firmware will be uninterrupted or error free LIMITATION OF WARRANTY The foregoing warranty shall not ap...

Page 3: ...fumes Operation 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 dangerous voltages may exist even with ...

Page 4: ...nstallation operating manual and before operating the equipment D Frame or chassis terminal A connection to the frame chassis of f r OR 1 the equipment which normally includes all exposed metal struc tures Alternating current power line Direct current power line Alternating or direct current power line The WARNING sign denotes a hazard It calls attention to a pro cedure practice condition or the l...

Page 5: ...t 334Aonly 4 7 Section Page 5 1 Introduction 5 1 5 3 Required Test Equipment 5 1 Distortion Measurement of AM Operation 4 1 Distortion Measurement inAM V MAINTENANCE 5 1 Section Page V MAINTENANCE Cont d 5 1 5 5 Performance Checks 5 1 5 9 FundamentalRejection Check 5 1 5 10 Second Harmonic Accuracy 5 2 5 11 Instrument Induced Distortion Check 5 2 5 12 Frequency CalibrationAccuracy Check 5 3 5 13 A...

Page 6: ...Bridge Circuit and Rejection Characteristics Auto Control Loop Detector Reference and Error Phase Relationship Rejection Amplifier Block Diagram and Typical Frequency Rejection Characteristic Bandwidth Versus Null Depth Simplified Metering Circuit Fundamental Rejection Check Instrument Induced Distortion Check Frequency Calibration Accuracy Check 111 5 4 3 0 3 5 5 5 3 5 5 6 4 0 4 2 5 7 5 8 4 3 6 1...

Page 7: ...d Distortion less than 1 can be measured at the 8ame level of the carrier up to 65 Mc 1 6 ACCESSORY FEATURES 1 7 The accessory available with the 333Aand334A Distortion Analyzers is a voltage divider probe hp Model No 10001A The features of the probe are a 10 megohms shunted by 10 pF giving 1O l b c 2 division accuracy d 600Vpeakinput e 5 ns rise time attenuation DC to 30 MHz bandwidth 1 8 OPTION ...

Page 8: ... from 20 Hz to 600kRz 0 1 V rma 0 01 V open circuit for full scale meter deflection 0 05 V rms f 0 005 V into 2 kS2 for full scale meter deflection AUTOMATIC NULLWG MODE Set Level At least 0 2 V rms Frequency Ranges X1 manual null tuned to less than 3 o f set level total frequency hold in io 5 about true manual null X10 through X10K manual nulltuned to less than 10 o f set level totalfrequency hol...

Page 9: ... exceeds 55 C 131 F 2 11 BENCH mSTALLATION 2 12 The Model 333A 334A i s shipped with plastic feet and tilt stand in place ready for use as a bench instrument 2 13 RACK INSTALLATION 2 14 The Model 333A 334A may be rack mounted by using the 5 RackMount Kit hp Part No 5060 0775 Instructions for the conversion are included with the kit The rack mount for the Model 333A 334A ie an EIA standard width of...

Page 10: ...kHz OUTPUT connectors provide means of monitor ing output of meter circuit Frequency vernier provides fine adjustment of frequency dial METER RANGE switch selects full scale range of meter in percent dB and rms volts Signal OSENSITMTY selector provides r 50 dB atteau SENSITIVITY VERNIER control provides fine Mechanical zero adjust provides mechanical OFUNCTION switch selects type of operation of S...

Page 11: ...the voltage indicated may not be the rms value of the signal applied This deviation of meter indica tion exists because the ratios of average to effective values are usually not the same in a complex wave as in a sine wave The amount of deviation depends on the magnitude and phase relation betweenthe harmonics and fundamental frequency of the signal applied Table 3 1 lists the deviation of the met...

Page 12: ...HE INPUT VOLT DAMAGING COMPONENTS ON A2 BOARD AGES LISTED BELOW ro PREVENT VOLTMETER FUNCTION lV RANGE AND BELOW AND DISTORTION ANALYZER FUNCTION MAXIMUM SENSITIVITY 1 300 VABOVE 100 HE 2 50 VABOVE 1 kHz 3 19 MANUAL MODE a Turn instrument on and mechanically zero meter according to procedure in Paragraphs 3 15 and 3 16 b C d e f g h k 1 m Set NORM R F DET switch to NORM Set FUNCTION switch to SET ...

Page 13: ... 6 dB and METER RANGE setting is 40 dB distortion measured i s 46 dB from funda mental If desired rms voltage of input signal canbe measured by setting FUNCTION switch to VOLTMETER and setting METER RANGE switch to obtain an on scale indication 3 21 DISTORTION MEASUREMENT OF AM RF CARRIERS 334A only DO NOT EXCEED MAXIMUM INPUT VOLTAGES LISTEDONREAR PANEL a Turn instrument on and mechanically zero ...

Page 14: ...pen circuit for full scale meter deflection isprovided at the OUTPUT terminals 3 29 In DISTORTION function the distortion 0 1 V r m s open circuit forfull scale deflection i s provided at the OUTPUT terminals for monitoring purposes NOTE The INPUT terminal and the OUTPUT terminal shouldnot be connected directly together when making low level measurements These terminals are isolated from each othe...

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Page 16: ... I I I I I I I I I I I I I 3 I f I I I I I I I I 1 3 j P I I L P I I I I I I I I I I I I I I I I A Y Y m 0 W W lb I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 1 I I I I I I I I I I I I I I I I I I I I I I I I I I I 1 ...

Page 17: ...n bridge andabridge amplifier The SENSITIVITY VERNER control at the input o f the preamplifier provides a set level signal to obtain a full scale read ing on the meter for any voltage level at the input of the instrument With the FUNCTION switchinthe SET LEVEL position a ground is applied to the Wienbridge circuit to allow a signal reference level to be set up on the meter With the FUNCTION switch...

Page 18: ...N position the Wien brldqe is connected as an interstage coupling network between the preamplifier circuit and the bridge amplifier circuit The bridge is tuned to the fundamental frequency of the input signal by setting the FREQUENCY RANGE selector S4 for the appli cable frequency range andtuning the capacitors C4A through C4D The bridge circuit is balanced by ad justing the COARSE balance control...

Page 19: ...or each position of the FREQUENCY RANGE selector S4 S4 provides coarse tuning of the reactive leg by changing the bridge circuit constants in five steps at 1 decade per step For the automatic control loop the refer ence voltage is taken from R6 at the input to the re jection amplifier and applied to the buffer amplifier A5Q7 The reference voltage is amplified and clipped by A5Q8 and A5Q9 and coupl...

Page 20: ...e outpui of the lamp driver A5Q14 controls the brilliance of A6DS2 which varies the resietance of A6V2 through A6V5 to tunethe branches of the reactive leg Deck AR of the FREQUENCY RANGE switch 54 switches A5R56 in parallel with A5R55 on the top three fre quency ranges A6DS2 willbecome brighter and lower the resistance of A6V2 through A6V5 makingvariatio 45 135 225 315 a Ref signalforResistive Det...

Page 21: ...c i s attenuated several dF3 more than the third harmonic andthethird more than the fourth The result of the negative feed back i s illustrated by the rejection characteristic shown in dashed lines on the attenuation and phase characteristic of Figure 4 3 Figure 4 6 shows a simplified block diagram of the rejection amplifier with the typical frequency rejection characteristic Refer to Figure 4 7 B...

Page 22: ...Section IV Model 333A 334A 0 10 20 30 40 50 60 70 DEPTH OF NULL DB APPROXIMATE PERCENT 8ANDWIDTH X IW f0 333A S3 A no Figure 4 7 Bandwidth Versus Null Depth 4 6 ...

Page 23: ...to the average value of the current pulses rather than the peak value The meter is calibrated to indicate the rms value uf a sine wave Resistor A2R45 im presses a fixed bias across diodes A2CR6 and A2CR7 biasingthem close to the barrier voltage to makethe meter amplifier response linear to large variations in signal amplitude The linearity of this type uf cir cuit i s also increased by including t...

Page 24: ...Troubleshooting hp Model 140A 1402A Vertical Dual Channel 1420A Oscffloscope AC Voltmeter Filter Box Voltage Range 100 pV to 30V Troubleshooting hp Model 400F Frequency Range 20Hzto4 MHz Filtered Outputs 500 Hz 5kHz Performance Checks White Model 2640 Filter Output Distortion 80 dB AC Voltmeter 250 kHz 600 kHz Set Input Impedance 10 M52 shunted by 10 pF Troubleshooting hp Model 11074A Voltage Divi...

Page 25: ...UAL HIGH PASS FILTER to OUT and NORM R F DET switch to NORM unless otherwise specified 5 8 A Performance Check Test Card is provided at the end of this section for recording the performance of the instrument duringthe performance checks The card may be removed from the manual and used as a permanent record o f the incoming inspection or of a routine performance check If the instrument fails to mee...

Page 26: ... until 333A 334A meter indication is 300 pV Set a reference on meter of test oscillator and use amplitude control to main tain set reference whenever frequency of oscillator is varied Set test oscillator to each frequency listed in Table 5 4 At each respective frequency 333A 334A meter reading should be within tolerances listed in table 5 10 FUNDAMENTAL REJECTION CHECK a Connect test equipment to ...

Page 27: ...ial and vernier balance controls for best null indication on meter Do naC change frequency or balance settlngs after best null is obtained Set 333A 334A FUNCTION switch to SET LEVEL and set METER RANGE switch to OdB Set test oscillator frequency to 30 Hz and adjust amplitude forOdB indication on 333A 334A meter Set 333A 334A FUNCTION switch to DIS TORTION Meter reading should not change more than ...

Page 28: ... be high at null and vice versa Set 333A 334A controls as follows FUNCTION SET LEVEL SENSITIVITY MAX METERRANGE ODB MODE M ANUAL FREQUENCYRANGE X l Frequency Dial 10 Set test oscillator frequency to 10 Hz and adjust amplitude for indication of 2 dB on 333A 334A meter Set 333A 334A FUNCTION switch to DISTORTION Do not adjust 333A 334A frequency controls m j x test oscillator frequency and 333A 334A...

Page 29: ...ANGE X10 Frequency Dial 50 1 m n 0 P q r 5 Set test oscillator frequency to 500 He at an amplitude o f 1V Adjust SENSITIVITY controls for 2 dB in dication 333A 334A meter Set 333A 334A FUNCTION switchtoDISTOR TION Adjust 333A 334A frequency dialvernier and BALANCE controls for minimum meter indi cation Reduce METER RANGE setting as necessary to maintain on scale meter read ing Note meter reading S...

Page 30: ...litude control to maintain set reference whenever frequency of oscillator is varied Increase frequency of test oscillator to 230 kHz 333A 334A meter indication should be 70 7 mV or greater verifying an input capacitance of 70 pF or less on 0 1 V range in toltmeter function h i Set 333A 334A FUNCTION switch to SET LEVEL Set test oscillator to 100 Hz and adjust amp litude for 333A 334A meter indicat...

Page 31: ...NSTMTYcontrols for meter indication of OdB Set test oscillator to 1 We Reading on 333A 334A meter should be within 0 5 dB of 0 dEJ setting Set test oscillator to 60 Hz h Reading on 333A 334A meter should be at least40 dB below 0 dB setting 5 21 RESIDUAL NOISE CHECK a Connect a shielded 60051 load across 333A 334A INPUT terminals See Figure 5 7 for details on constructing shielded load Be sure that...

Page 32: ...nimum meter indication g Distortion should be more than 40 dB below OdB reference 5 23 ADJUSTMENT A N D CALIBRATION PR 0CEDURE 5 24 The following is a complete adjustment and calibration procedure for the 333A and 334A Before proceeding with these adjustments the Performance Checks should be performed to determine whether adjustments are necessary I f your instrument does not meet the test limits ...

Page 33: ...Model 333AJ334A Section V 334A ONLY V A S3C6 S3C1 Figure 5 8 Adjustment and Chassis MountedComponent Location 5 9 ...

Page 34: ...djust amplitude so that 333A 334A meter reading is same as in step h Set a refer ence on meter of test oscillator and use amplitude control to maintain set reference whenever frequency of oscillator is varied k 1 m n 0 P 9 r 8 t U V W X Y Set test oscillator frequency to 2 MHe a attenuate output by 40 dB maintainingrefm ence set in step j Set 333A 334A METER RANGE Switch to 0 01 VOLTS AdjustA2R39f...

Page 35: ...30 SENSITIVITY SWITCH CALIBRATION a Connect test oscillator to 333A 334A ae shown in Figure 5 1 NOTE Selector positions for the SENSI TMTY selector will be referred to as follows MIN Position 1 next step Position 2 etc to MAX Position 6 b C d e f 8 Section V Set Distortion Analyzer controls as follows FUNCTION SETLEVEL METER RANGE 0 01 VOLTS SENSITIVITY Position 5 SENSITIVITY VERNIER MAX Set test ...

Page 36: ...ltmeter function must operate properly There fore troubleshoot the voltmeter function first to assure that it works normally before attempting ta locate a trouble in the distortion function 558 TROUBLESHOOTINGVOLTMETER FUNCTION 5 39 Follow the steps below to troubleshoot the volt meter function a b C Set 333A 334A controls as follows FUNCTION VOLTMETER Connect a 1V rms 1lrHz signal to 333A 334A IN...

Page 37: ...ration adjustment with A2c21 Insufficient bias adjustment with A3R4 meas ured at A3TP1 Insufficient bias adjustment with A3R16 meas ured at A3TP2 EL SYMPTOMS Check Fuse Fl Check M1 Check AIAF CIA D C3 R4 R5 A6DS1 and A6V1 CheckR2 R3 andS2R8 Check R4 and R5 1a3 Check diode A4CR1 Spare diode located on out side of A4 shield Check to see if high pass filter is in the OUT position TMENT SYMPTOMS Check...

Page 38: ...present proceed to step d if not go to step f Measure ac output of rejection amplitier at AS pin 2 for approximately 0 32 V rms If proper voltage is present check high pass filter and switch and check function and meter range ewitch connections If proper voltage is not present go to step e Measure ac signal at AB pin 8 for approxi mately 315 mV rms wea 10Mbl lO pFprobe and be sure that Wien bridge...

Page 39: ...ges are not present check A5Q5 and check MODE switch connections e Check waveform at A5 pin 16 If proper waveform is present check A5Q1 through A5Q4 and associated circuitry If proper waveform is not present check A2R50 Check waveform at negative side of A5C10 If proper waveform is present check A5Q7 through A5Q9 and associated circuitry I f proper waveform is not present check R6 f 5 45 PHOTORESI...

Page 40: ...rtthem in leadholes Reheat the soldering d ironand adda small amount of new solder asre quiredto insure a goodelectrical connection Clean excessive flux fromthe connection and adjoining area e 5 52 SERVICING ROTARY SWITCHES 5 53 The 333A 334A has five rotary type switches FUNCTION SENSITIVITY FREQUENCY RANGE MODE and METER RANGE When working on these switches observe the following rules a Use a lo...

Page 41: ...ter 1 v 1 v Capacitance Check Set Level 1 v 8 Minimum Input Level Check 0 3 V 9 DC Isolation Check 333A 334A Meter Power Supply Ammeter Test performed by Date CHECK Indication Max 306 pV 102 mV Specification Indication Mi 294 pV 0 0 98 mV 0 80 dB 0 Specification l 0 dB c k0 6 dB 1 0 dB 2 0 dB 3 0 dB Indication 0 0 0 0 0 Specification Indication 70 dB 64dB 64dB Specification 95 msec to 105 msec 950...

Page 42: ...M Detector Check Model 334A only Dfgtortion Indication Min 2 94 mV 9 8 mV 29 4 mV 98 mV 294 V 98 V 2 94 V 9 8 V 29 4 V 98 0 V 294 0 V Min 2 94 V 2 94 V 2 94 V 2 94 V 2 94 V 2 85 V 2 85 V Min 285 pV 294 pV 294 pV 294 pV 294 p V 294 p V 285 pV 0 0 0 0 U 0 0 Max 3 06 mV 10 2 mV 30 6 mV 102 mV 306 V 1 02 v 3 06 V 10 2 v 30 6 V 102 0 v 306 0 V Max 3 06 V 3 06 V 3 06 V 3 06 V 3 06 V 3 15 V 3 15 V Max 31...

Page 43: ... parts are listed at the end of Table 6 1 6 4 ORDERING INFORMATION 6 5 To obtain replacement parts address order or inquiry to your local Hewlett Packard Field Office See Appendix for list of office locations Identify parts by their Hewlett Packard part numbers Include inatrument model and serial numbers 6 6 NON LISTED PARTS 6 7 To obtain a part that is not listed include a Instrument model number...

Page 44: ...Section VI Model 3334 334A R m UNDER KNOB P O Figure 6 1 Mechanical Parts ...

Page 45: ...1 4 1 1 1 DESCRIPTION Gusset Center Plate Panel Glide Plastic Bracket PC Board Mount Rear Bracket PC Mount Dial Plate Indicator Dial Knob Round black Knob Round black vernier Bracket Support Knob Lever Switch black Knob Skirted Bar black Standof3 Hinged Knob SkFrted Bar black Binding Post Assembly red Bracket PC Mounting Gusset Side Connector Printed Circuit 15 pin Shield Divider Shield SW Functio...

Page 46: ...333 5060 8740 TQ 1 1 1 2 2 2 2 2 2 1 5 1 1 1 1 DESCRIPTION Top Cover Assembly F u l lModule Panel Rear Frame Assembly 5 x 11Full Moctule Retainer Half Module Side Cover Rear 5 x 1 1Full Module Side Cover Front 5 x 1 1Full Module Handle Assembly Side Beauty Strip Foot Assembly Full Module Battom Cover Assembly Full Module Panel Front Stand Tilt Kit Rock Mount HPlf Module Figure 6 2 Modular Cabinet ...

Page 47: ... retaining Washer INDEX I b PARTNO I DESCRIPTION 15 16 17 1 9 20 21 22 23 24 25 26 27 28 29 5020 0639 00333 63601 5020 0327 5040 0631 3030 0022 1500 0004 5060 0020 5060 0021 5000 0637 3050 0180 00331 00102 2460 0004 2190 0057 31014889 Casting Cap drive Gear Spur assembly shaft Bracket cap mounting Set screw Coupler insulator Gear assembly Gear assembly Spring thrust Washer Plate cap mounting Bolt ...

Page 48: ...200 piv 0 75A Diode breakdown 7 2V i2 400 mW TSTR Si NPN 2N1701 TSI R S i NPN 2N3053 TSTR SiPNP TSI R Si NPN 2N1701 Not assigned R fxd met oxide 100 i2 3 W R fxd comp 1k 0 i5 1 2 W R fxd comp 7 5 kS1 i5 1 2 W R fxd comp 6 8 kS1 i5 1 2 W R fxd flm 7 15 kn i16 1 8 W R k d met flm 7 50 k 0 il 1 8 W R k d comp 1k 0 i5 1 2 W R fxd met oxide 100 4 3 W R fxd comp 68000 i546 1 2 W R k d comp 7 5 k 0 5 1 2...

Page 49: ...00 pF 20 250 vdcw C fxd mica 160 pF 20 C fxd A1 elect 100 p F 75 10 15 vdcw C fxd mica 390 pF 5 C fxd elect 0 47 p F 80 20 8 25 vdcw C var cer 8 50 pF C fxd mica 39 pF 5 C fxd mica 240 pF 5 C fxd cer 0 1 p F 80 20 50 vdcw C fxd AI elect 130 p F 75 10 15vdcw C fxd AI elect 50 p F loo 10 6 vdcw Delete on Option 01 instrument C fxd A1 elect 50 p F 75 10 25 vdcw C fxd mica 200 pF 5 C fxd Ta elect 22 p...

Page 50: ...0683 5105 0683 6825 0683 2015 0683 2025 0683 1235 0683 2405 0698 3174 0683 3015 0898 3147 0757 1 102 0757 0346 2100 0206 0757 0346 0683 3945 0083 3025 0683 1015 2100 1788 0757 0390 0683 1815 0883 1005 0683 2425 0683 1015 0683 2405 0683 3025 0683 5115 0683 5105 0683 2025 0683 1245 00333 66503 0180 0039 0180 0060 0180 0022 0140 0190 3eo Appendix C for backdating Idormation 8 TC 2 4 1 1 1 2 1 1 1 1 2...

Page 51: ...1 2 4 1 1 1 1 1 1 1 1 1 1 1 2 1 2 1 1 1 1 DESCRIPTION C fxd mica 240 pF 5 C fxd Ta elect 3 9 fiF 4 0 35 vdcw C fxd my 0 047 F110 200 vdcw C fxd A1 elect 100 p F 75 10 la vdcw C fxd A1 elect 300 p F loo 10 6 vdcw C fxd mica 150 pF 15 C fxd mica 127 pF 12 C fxd A1 elect 200 p F 75 10 15 vdcw C fxd A1 elect 500 p F 75 10 15 vdcw C fxdmica 56 pF is 300 vdcw C fxd Al elect 500 p F 75 10 15 vdcw Diode S...

Page 52: ... pF So 20 100 vdcw C fxd Al elect 2600 p F 75 10 2 5vdcw C fxd mica 130 pF i5 C fxd Ta elect 0 22 p F i l O 35 vdcw C fxd cer 0 01 pF 80 20 100 vdcw C fxd Al elect 35 pF 75 10 6 vdcw C fxd mica 33 pF a58 C fxd Ta elect 3 3 p F 120 35 vdcw C fxd Ta elect 0 22 p F i l O 35 vdcw C fxd Al elect 10 pF i75 10 15 vdcw C fxd Al elect 50 p F 75 10 25 vdcw C fxd cer 0 01 p F 80 20 100 vdcw C fxd AI elect 28...

Page 53: ... 1 4 W R fxd comp 10 k51 5 1 4 W R fxd comp 12 k51 5 1 4 W R fxd comp 1000 5 1 4 W R fxd comp 12 k 0 5 1 4 W R fxd comp 10 k51 i5 1 4 W R fxd comp 750 k 0 5 1 4 W R fxd comp 5 10 5 1 4 W R fxd comp 20051 5 1 4 W R fxd comp 10 k 0 5 1 4 W R fxd comp 22 k 0 5 1 4 W R fxd comp 10 k 0 4 1 4 W R fxd comp 200051 5 1 4 W R fxd comp 36 k 0 5 1 4 W R fxd comp 1800 5 1 4 W R fxd comp 3600 5 1 4 W R fxd met ...

Page 54: ...B VlthruV5 Lamp incd 10 V 14 mA Cell photoconductive CdS Cell photoconductive CdS Assembly filter board includes c1and c 2 L1 C fxd my 1 3 p F 4 0 50 vdcw C fxd my 0 47 p F lo 100 vdcw nductor 180 mH 7 pin miniature socke base C fxd my 0 33 p F lo 400 vdcw C k d my 1p F i 10 400 vdcw 2 var cer 5 20 pF 2 var air 12 5 to 535 1 pF 4 sect 3 fxd cer 005 pF 40 250 vpc fxd mica 39 pF i 10 2 fxd cer 005 p...

Page 55: ... flm 69800 4 1 2 W R fxd met flm 22 1 B0 4 I 2 W R fxd met flm 69 8 kSZ l 1 2 W R fxd met flm 221 k0 l 1 2 W R fxd met flm 698 k0 l l 2 W Not assigned 1000 lo 2 w R var pot lin 10000 lo 1 2 w Switch Assembly meter range includes C1 thru C6 R1 thru Rl4 C var trim 0 7 3 0 pF C fxd mica 2000 pF 2 C fxd mica 47 pF 2 C fxd mica 62 pF 5 C var cer trim 8 50 pF R fxd comp 2200 5 1 2 W R fxd met flm 277 50...

Page 56: ... 1 40kn 1 1 8W R fxd carbon f l m 28 8 Mi2 I 2 W R fxd met flm 1 3 Mn 1 1 2 W R fxd met f l m 255 kn l 1 2 W Part of Frequency Range switch assembly not separately replaceable R fxd met flm 26 1 k S Z 4 1 2 W Part o f Frequency Range switch assembly not separately replaceable R fxd met fIm 1 65 kbl 1 2 W R fxd flm 1 40 kS1 1 1 8 W Part of Frequency Range switch assembly not separately replaceable ...

Page 57: ...s is given below listed on page 7 2 REFERENCE DESIGNAT10NS ASSEMBLY ASSEMELY REFERENCE ASSEMEL7 PART NUYEER DEUWATION NAME W X J D E S A241 SWASSEMELYI DENOTES SIGNAL TEST VOLTAGE JACK XA2 IS HOUNTED ON CHASSIS OR ANOTHER ASSEMBLY COMPLETE DESIGNATOR IS A2R4 SUBASMBLY Of A2 COMPLETE DESIGNATOR IS A2611 I I I 18 FEMALE PIN I WIRE COLOR COLOR COOE I S THE SAME I 1 s THE RESISTOR COLOR CODE FIRST WME...

Page 58: ...E 0 DENOTES CIRCUTC GROUND ON BOARD 7 DENOTESASSEMBLY 8 DENOTES MAIN SIGNAL PATH 9 DENOTES FEEDBACK PATH 10 DENOTES REAR PANEL MARKING 11 L J 12 DENOTES SCREWDRIVERADJUST 1 1 DENOTES FRONT PANEL MARKING r 13 E N O T E S FRONT PANEL CONTROL 14 AVERAGE VALUE SHOWN OPTIMUM VALUE SELECTEDAT FACI ORY 15 DENOTES COMPONENTS NOT MOUNTED ON ASSEMBLY 16 DENOTES TROUBLESIIOOTmG INFORMATION LOCATED ON APRON P...

Page 59: ...A SSU Section M BLACK BROWN RED ORANGE YtLLOW GRBLN BLIR VIOLET 0 1 1 3 4 5 6 7 TP3 0 A 5 TPi 0 0 lPi 0 crm 40J O I 7 0 0 b 8 A 1 3 d 0 1 It3 0 A 2 0 4 iT rr WIRECOLORCODE I A 6 Figure 7 1 InternalWiring Dat 7 3 ...

Page 60: ...with the ones listed in Table 6 1 See Appendix C Change 11 for applicable numbers NOTE 2 The A2 Component locator for earlier instruments is shown below It applies to the following instruments and serial numbers 333A 110lA02085 and below 334A 1106A03240 and below Also applies to Option 01 SEE NOTE 1 SEE NOTE 1 SEE NOTE 1 ...

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Page 65: ...for applicable numbers NOTE 2 The A2 Component locator for earlier instruments is shown below It applies to the following instruments and serial numbers 333A 1101A02085and below 334A 1106A03240 and below Also applies to Option 01 Note 3 The value of A3R37 is 47 K f2 in earlier instruments The vol tage at A3RP2 will also be increased to 20 2 V dc See change No 14 in Appendix C 7 6 ...

Page 66: ...at pin 1 fi 0 185 V rms at pin 7 In DISTORTION function with input nulled signal at pin 7 should change to 2 4 V rms Use a 10 MS2 10 pF impedance probe for this measurement fi 0 V rms at pin 8 In DISTORTION function but not nulled frequency dial set to 50 signal at pin 8 changes to 0 315 V rms Use a 10 MS2 10 pF impedance probe for this measurement 0 32 V r m s at pin 2 I O v3 ye ee Y i 4 0 38 5 0...

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Page 69: ...lier instruments Do not change A2C29 to the value shown in Table 6 1 unless a frequency response prob lem is encountered on the 300 y V range See Appendix C for applicable serial numbers Change No 7 NOTE 3 S3C4 was 22 pF and A2C19 was 680 pF on some earlier instru ments These capacitors should not be changed unless frequency re sponse becomes a problem at 3 SMz and 1 4Mz respectively Refer to ppen...

Page 70: ...Voltage between collector of A2Q9 and pin 15 for full scale deflection on the 0 to 1 scale on 0 OlVrange and above Cannot be measured on 0 01 V range and below because the meter amplifier will oscillate 3 25V 5 5 v 0 3 V p p from either pin 10 or 11 to ground for full scale deflection on 0 to 1 scale OTPI 03 7pY c2 c4 R5 c3 c 1 R4 R2 CII Rl3 R9 Re c7 Rl4 CS RIO r12 Rl5 R7 RII Rl8 R6 4 z k GJ C13 R...

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Page 74: ...otherwise noted FUNCTION SET LEVEL METERRANGE SET LEVEL MODE MANUAL FREQUENCY RANGE XlOO Frequency Dial 10 Input Signal 1kHz for full scale indication on 333A 334A meter IEO 360 I I t i 180 3 6 0 0 SOo I 270 I I I I I I I i I i I I I I I I I I I I I I I I I I I I I I 1 I I I I I I I I I I I I I I i 5 3 3 3 A 8 1 4 7 2 8 l l l 7 11 ...

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Page 76: ...R9 is added here on instruments prefixed 820 822 for 334A and below NOTE 3 Value was 01 pF on serials 820 01245 822 01565 for 334A and below NOTE 4 C8 is added to instruments whose serial number is 533 00200 538 00200 for 334A and below NOTE 5 A1R13 was different in some earlier instruments and is not di rectly interchangeable with the one listed in Table 6 1 See Appendix C for applicable serial n...

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Page 80: ...go Ill Flscher Spccinl Mfg Co Clnclnnatl Ohio General IndustriesCo The Elyrla Ohio Goshen Stamping Tool Co Goshen Ind J F D Electronics Corp Brooklyn N Y Jennlngs Radio Mfg Corp Sm Jose Cal Groove Pin Corp Ridgefield N J SignalIte Inc Neptune N J J H Winns and S M Winchester Mass msew Condenser Corp Chicago ni R F Products Dlvirlon of 1 bM COW Fullerton Cal Ampbnol Borg Electronic Carp Danbury Con...

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Page 83: ...he backdating sheet should be replaced using the part 7 thru 13 8 thru 13 number given in the manual 333A 910 01525 and below NOTE 2 Instrument Serial Prefix Make Manual Changes I 1 x9 thru 13 974 02691 and below 1140A03540and below I I 12 13 13 1140A05365and below 1140AO5640 and below 15 le 910 01665 and below I lo thru 613 I 1140A06190 17 1140A05791to 1137A02625and below 1140A05790and below 1137...

Page 84: ...1494 01495 01497 01500 01501 01503 01504 01507 01508 01509 01510 41512 01514 01515 01516 01518 01520 01521 and 01524 CHANGE 63 CHANGE 4 CHANGE 65 CHANGE 6 Figure 7 2 Change value of A2Rl6 to 10 ohms Change value of A2C12 to 0 1 pF Delete A2C30 from circuit Change value of A2R28 to 10 ohms Change value of A2C20 to 0 22 pF Delete A5C31from circuit Figure 7 4 Figure 7 5 Table 6 1 Delete A5C31 Figure ...

Page 85: ...ts in thie change are not directly interchangeable unless all parts are changed CHANGE 111 changeA2R3 to part 21006094 The resistors in this change are not directly interchangeable with tbe ones listed in Table 6 1 CHANGE 12 Figure 7 3 Delete the 47 ohm resistors A3R35 and A3R36 in series with the f 25 volt lines Replace the resistors with a direct connection Change the value of A3R16 to 3300 ohms...

Page 86: ...lustration a8 shown below Change Index No 21 to read Line Voltage 115 230 V ewftch eete instrument to op erate from 115 V or 230 V ac Add Index N o 23 Battery voltage 28 to 50 V dc and 28 to 50 V dc terminals provide connection far external batterlee Delbte text uuder Bragraph 3 15 Add step a and b indicated below Page 5 6 Page 6 13 Figure 7 2 Page 7 5 74 Page 6 14 Figure 7 3 Page 7 7 74 Page 1 2 ...

Page 87: ...h the ac power cord connected to nominal line voltage 115 V 220 V 48 to 440 H E Page 5 8 Paragraph 5 25 Change 440 HE to 66 HE Figure 6 1 Page 6 2 Add battery terminal inputs Index No 8 34 35 and 36 to the top and bottom view d the cabinet Figure6 1 Page6 3 Add the Index No e and aeeociated data aa indicated below INDEXNO PARTNO TQ DESCRIPTION 34 034010087 1 Ineulator Binding P o e t Triple 35 034...

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