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Содержание 654A

Страница 1: ...ual for any changes which apply to your instrument and record these changes in t he manual Backdating information for in st rum e n s manufactured before this printing will be found in Appendix C for in strument Serial Numbers 0951 A02260 and b elow WARNING I To help minimize the possibility of electrical fire or shock hazards do not expose this instrument to rain or excess moisture hp Part No 006...

Страница 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 shaH not app...

Страница 3: ...ubleshooting the Buffer Amplifier 3 5 Turn On Procedure 3 I 5 86 Troubleshooting the Balanced 3 6 Output Meter Mechanical Amplifier 5 23 3 8 Primary Power Application 3 1 of the Leveling Loop 5 23 3 9 Operating Instructions 3 1 5 91 Troubleshooting the Amplitude 3 10 Operating Check 3 1 Control Integrator 5 24 5 93 Troubleshooting the ALC Loop 5 24 IV THEORY OF OPERATION 5 24 4 1 Differential Ampl...

Страница 4: ...pply Output 5 4 Location of Internal Adjustments 5 12 Voltage vs Current 4 5 5 15 Frequency Calibration Tes t Setup 5 14 4 Simplified Scllematic of Current 5 16 Meter Tracklllg Adjustment 5 17 Limiting Circuitry 4 5 5 17 Alignment Access Covers for 5 1 Amplitude Accuracy Checks UNBAL 5 3 Models 65 I B 2A 3A 4A 5 25 5 2 Amplitude Accuracy Checks BAL 54 5 j 8 Troubleshoot ing Tree 5 27 5 28 5 3 Leve...

Страница 5: ...ment in the presence of flammable gases or 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 conditi...

Страница 6: ... marked with this symbol must be connected to ground in the manner described in the installation operating manual and before operating the equipment Frame or chassis terminal A connection to the frame chassis of rh OR L the equipment which normally includes all exposed metal struc tures Alternating current power line Direct current power line Alternating or direct current power line I The WARNING ...

Страница 7: ... The meter scale is expanded to indicate 0 dBm at center scale with a total range of 1 dBm The metering circuit monitors the signal level before the attenuators so that the meter indication is independent of the attenuator settings the meter indicates the signal level set by the front panel AMPLITUDE control The output signal level into the load is the algebraic sum of the meter indication and the...

Страница 8: ... 05 dB Balance on balanced impedances when measured by the procedure given in Paragraph 5 28 greater than 50 dB for frequencies from 10Hz to I MHz greater than 40 dB to 5 MHz Distortion THD 10Hz to I MHz greater than 40 dB below fu nda mental I MHz to 10 MHz greater than 34 dB below funda mental Hum and noise greater than 70 dB down at full output Table 1 2 General Information Output impedance 50 ...

Страница 9: ...ment notify the nearest hp Sales and Service Office and a replacement cord will be provided 2 9 GROUNDING REQUIREMENTS 2 10 To protect operating personnel the National Electri cal Manufacturer s Association NEMA recommends that the instrument panel and cabinet be grounded The Model 654A is equipped with a three conductor power cord which when plugged into an appropriate receptacle grounds the inst...

Страница 10: ...nner conlainer c Use plenly of packing malerial aroLind all sides of insirLimenl and proieci panel faces wilh cardboard sl rips d e Place inslrumenl and inner container in a heavy carlon or wooden box a nd seal will slrong lape or i1lel 1 bands HI Mark shipping conlainer wilh DELICATE INSTRUMENT FRAGILE ele 2 2 11Jj I L 1 1 ...

Страница 11: ... bal 1point pen into recess on adjustment wheel and rotate wheel until meter pointer rests exactly over I dBm mark 3 8 PRIMARY POWER APPLICATION a Before applying primary power to instrument set I 15 or 230 volt slide switch S3 to position which indicates primary voltage to be used f Connect the load to the output connectors Use odBm I m watt into rated load Impedance odBm 10 dBm 50 ohm 75 ohm 135...

Страница 12: ...ces of 50 ohms and 75 ohms BAL output J3 and 14 BNC connectors provide a balanced output signal at impedances of 135 ohms 150 ohms and 600 ohms IMPEDANCE switch A4S J Selects required output impedance of instrument pushbuttons are interlocked so that when one is pressed the others spring out AMPLITUDE control R3 Allows adjustment of 1 dBm of output signal amplitude FREQUENCY VERNIER Provides a fin...

Страница 13: ...tter Follower provides isolation between the oscillator circuit and the rear panel COUNTER OUTPUT Regulated Power Supplies provide the 31 V and 26 V reqUired to operate the 654A 4 6 CIRCUIT DESCRIPTION_ 4 7 OSCILLATOR CIRCUIT Schematic No 1 Figure 7 2 4 8 The frequency adjustable Oscillator drives the Buffer Model 654A Section IV SECTION IV OPERATION Amplifier with a stable sine wave at a frequenc...

Страница 14: ...oidal output from the Buffer Amplifier is amplified and converted into a balanced signal in the Balanced Amplifier The Amplifier consists of three ll cascaded differen tial amplifiers A2Q II through A2Q 16 and two complementary symmetry pairs A2Q IS A2QI9 and A2Q20 A2Q21 The balanced output signal from the complementary symmetry pairs is developed across summing resistors A2R74 and A2R7S and then ...

Страница 15: ...ge drop across A3 R19 and A3R20 IS changed this sets a new fixed value of current flOWing towards the base of A3Q6 4 25 AMPLITUDE CONTROL INTEGRATOR Schematic 2 4 26 The circuit consists of A3Q6 through A3Q9 and Section IV associated circuitry including the lamp of the photo sensitive resistor A2DSV I Schematic I A3Q6 and A3Q7 form a differential amplifier any change in output from the collector o...

Страница 16: ...always takes a fixed amount of the current from the Average Detector to offset the Meter A3C5 serves to improve the frequency stability of the Model 654A Meter Differential Amplifier A3C6 is connected across the Meter to damp the meter movement and A3C7 is switched in paraUel with A3C6 on the XIO RANGE so as to further improve damping of the Meter at very low frequencies 1 4 33 ATTENUATO RS Schema...

Страница 17: ...age supply voltage supplies 00 rnA curren t Iy 16 V short to Hent of current ies The is a It is first It Limit current ply will on until J return output 16 2V OONvENnCIIIAL CURRENT LIMIT i552A B 4314 Sectiull II If the latter occurs the Diode Switch is effectively closed and the power supply goes into a Foldback Current Limit condition In this condition the Current Limiting Transistor is controlle...

Страница 18: ...he instrument and pro tective covers removed Such maintenance should be performed only by service trained personnel who are aware of the hazards in volved for example fire and electrical shock Where maintenance can be performed without power applied the power should be removed ...

Страница 19: ...EQUENCY RANGE switch to XIM and FREQUENCY dial to its extreme counter clockwise postiton The counter should indicate a frequency of 10MHz or greater verifying a frequency of at least 10MHz at the upper end of the frequency range e Perform the Frequency Adjustments Paragraphs 5 47 through 5 57 if the tolerances are not met 5 8 FREQUENCY ACCURACY CHECK a Connect an electronic counter to the 654A rea...

Страница 20: ... Meter Oscilloscope Sensi ti vity 5mV cm hp Model 180 A Bandwidt h dc to 50MHz Oscilloscope with 180 IA and I820A plug ins Feed thruugh Feed Thru Termina ti ng Resistance a hp Model 1I04SC 3 50 uhms 25 i Res i s t lnc e b 75 ohms 25 b hr Model 1I094A All cn uators Frequency rangl 10Hz to 10Mf Iz with known accuracy at 10kHz_ 300kJlz and 10MHz Al tenuation rallgc VHF Altenuators a hp Model 35 5C a ...

Страница 21: ...5 ohm resistor use two 135 ohm resistors in parallel R I and R2 across two BNC to Binding Post Adapters as shown in Figure 5 2 2 Connect the adapters to the two output terminals of the 654A 3 Connect the ae voltmeter across the resistor which is connected to the 654A UNBAL terminal b Set the 654A controls as in Paragraph 5 IOb except set IMPEDANCE to 135 BAL c Record the ac differential voltmeter ...

Страница 22: ...een 1 213V rms and J 237V rms verifying an absolute level of I OdBm 1 3 Set the 654A controls as follows e If the tolerances are not met troubleshoot the FREQUENCY dial 1 instrument the most likely problem would be the FREQUENCY RANGE XIK 150 ohm impedance network on the A4 Board OUTPUT LEVEL dBm 10 0 5 14 600 BAL AMPLITUDE ACCURACY IMPEDANCE AMPLITUDE 50 UNBAL Adjust for OdBm a Connect the equ ip...

Страница 23: ...Hz to 10MHz the dc null meter indication should not vary more than t E calculated in step d of this Paragraph from null This verifies a level flatness referenced to 1kHz of 0 5 at an output level of IOdBm g Reset the 654A frequency to I kHz and the 10dBm step attenuator to 0 position and repeat Input Level 10dBm OdBm IOdBm OdBm IOdBm OdBm IOdBm OdBm IOdBm OdBm Output Voltage dc 0 5 deviation mV mV...

Страница 24: ... 654A In step f Sweep the 654A over the frequency rangeoflOHzto IMHz b If the tolerances are not met first assure that the 75 UNBAL flatness is within tolerance before troubleshooting the 654A a Connect the equipment as shown in Figure 5 5 Use an attenuator with known accuracy at 10kHz and JOMHz b Set the 654A controls as follows FREQUENCY RANGE Xl K FREQUENCY dial 10 OUTPUT LEVEL dBm 10 0 IMPEDAN...

Страница 25: ...cal and if disturbed can adversely affect the high frequency response of the attenualors see Paragraph 5 97 flS lLATlOr JT RANSrORMi R i I I i C DJ i 115VAC 115VAC I I I I I I II I I TRACKING OSCI LL ATOR L _ ___ _ _____ 1 I hP313A I DB STEP WAVE ANAL YZ ER ATTENUATOR hp312A hEr__ _ 750 FEE 0 THRU I TERM I NAT IO N hp 1I094A Figure 5 6 Attenuator Accuracy Checks 5 7 10 DB STEP OUL U r M JCJnl1 ATT...

Страница 26: ...ected to the 654A output connectors i e as viewed in Figure 5 6 the cable terminated in 75 ohms is moved with the termination to the right hand connec tor and the cable connected to the 75 ohm to 50 ohm impedance converter is moved with the converter to the left hand con nector then repeat steps c through h of this paragraph_ 5 27 IdB STEP ATIENUATOR CHECK NOTE See Paragraphs 5 24 and 5 25 before ...

Страница 27: ...ct a distortion analyzer to the 654A 50 ohm output as shown in Figure 5 10 e with the I directly ance COIl I position AC VOLTMETER TEST OSCILLATOR hp400E EQUAL I BALANCE CABLE BOX LENGTHS t SEE FIGURE 5 9 i _____________ _ JI IdB step FREQUENCY RANGE XIO IMHz by OUTPUT LEVEL dBm 10 0 Paragraph IMPEDANCE 135 BAL fofthis AMPLITUDE Adjust for OdBm on 654A meter c Sweep the 654A slowly over the freque...

Страница 28: ...If both harmonics are more than 43dB below the fundamental the total harmonic distortion will be more than 40dB down and it will not be necessary to make the following calculation I Ascertain the difference between the two harmonic levels in dB 5 10 Distortion Check 2 Using the chart below Figure 5 12 determine the dB to be added to the largest harmonic level 3 Add this amou nt to the largest har ...

Страница 29: ... t t l t o 2 4 6 8 10 12 14 16 DECI BEL 01 FFERENCE BETWEEN TWO VALUES Ie 5 12 Logarittunic Addition of Hannonic Components d Remove the 654A top cover insert a screwdriver between the tuner capacitor point X on Figure 5 14 and chassis ground The residual hum and noise indicated on the ac voltmeter should be greater than 70d B below the Od B reference 10MHz LOW PASS FILTER I I I LI L2 L3 L4 I I 82...

Страница 30: ... HIGH IMPEDANCE HIGH FREQUENCY CIRCUITS CONTAMINATION OF THE SWITCHES CIRCUIT BOARDS OR TUNING CAPACITOR WILL CAUSE HIGH IMPEDANCE LEAKAGE PATHS AND SUBSEQUENT DETERIORATION OF THE PERFORMANCE OF THE INSTRUMENT AVOID TOUCHING ANY OF THESE CIRCUITS WITH THE BARE FINGERS AS SKIN OILS ARE EXTREMELY CONTAMINATING IF HANDLING IS NECESSARY WEAR CLEAN COTTON OR RUBBER GLOVES DO NOT USE A PENCIL TO TRACE ...

Страница 31: ... RIPPLE Y DO NOT MOVE THE TWO WIRES BE CHECK T TWEEN TUNER AND RANGE SWITCH F AFTER CALIBRAT ON IS STARTED a Connect the dc voltmeter to the power supply THEIR POSITION WILL AFFECT negative output AI Pin 13 switch the FREQ CAL FREQUENCY RANGE switch to XIOO and note the voltmeter indication 5A8 The frequency calibration set up is shown in Figure b Vary the power line voltage from 103 5V to 5 14 do...

Страница 32: ...ILLATOR hp654A COUNTER OUTPUT IREAR PANEL G2J VOLTMETER hp427A 0 l j H I oII O TO A2TP2 I II c Check distortion at other dial and range settings NOTE You can adjust AIR4 at other frequency to get them into specification providing that you still are in specification at I X 100 d Disconnect the distortion analyzer 5 52 Frequency 0 iar and 1 K Range Adjustment a Preliminary mechanical adjustments per...

Страница 33: ...QUENCY RANGE switch to tor at least the value of S2C3 refer to Table 5 5 If S2C8 XIM and the FREQUENCY dial to 10 other does not have sufficien t range change S2C9 controls as in Paragraph 5 50b kwise posi 2 If A2TP2 should not remain 370 mV NOTE first mark 20 mV over the en tire dial range change Adjust A2CI S2C6 and S2C12 if f the fixed value of S2C16 or S2C 13 to bring frequency necessary to st...

Страница 34: ...XIOOK range fnot in tolerance repeat step b but set the frequency with dial at 10 towards the lower or upper limit of the tolerance given in Table 5 2 so that the dial will track as required 5 57 OUTPUT WAVEFORM CHECK a Connect the 654A 50 ohm output to the oscilloscope terminate the cable from the 654A with a 50 ohm feedthru 5 16 Model 654A b Set the 654A controls as follows AMPLITUDE extreme cou...

Страница 35: ...654A controls as follows FREQUENCY dial _ __ _ _ 1 FREQUENCY RANCE __ __ XIK OUTPUT LEVELdBm 10 0 IMPEDANCE 50 UNBAL c Adjust the 654A AMPLITUDE control for an indication on the ac differential voltmeter of 7071 V rms IOdBm adjust A3 R7 Meter Offset Cal for a 654A meter indication of OdBm d Set the 654A AMPLITUDE control to the extreme clockwise position and adjust A3R20 Amplitude Cal for an ac di...

Страница 36: ...paragraph 5 64 until balance specifications are met for all three impedances 5 18 NOTE This situation is not likely to arise however if it does then it is recommended that careful notes be made during the procedure as there is no way other than by trial and error of determining if the 135 ohm balance is being degraded in a direction which will improve the balance for the other impedances or if it ...

Страница 37: ...re monitored A the COUNTER OUTPUT B the 654A meter indication C the front panel output connectors By applying the observation made to Table 5 5 it should be possible to localize any problems to a particular area in the instrument refer also to the Block Diagram Figure 7 1 Section V I Set the 654A controls as follows AMPLITUDE fully clockwise OUTPUT LEVEL dBm 10 0 IMPEDANCE 50UNBAL 2 Connect an osc...

Страница 38: ...e power supplies Proper power supply voltage can be restored by switclling the IIlstrulllcnt off alld then on again 5 20 Model 654A II Ille positive puwer supply callnot be adjusted to 31 V proceed as I ollows a Veril y tlut the positive pllwer supply is not in a current limit cllndition by dis connecting the power supply load AI Pin 12 and AI Pin 13 NOTE Tum AC power off while dis CLlnnecting the...

Страница 39: ... Loop consisting of Buffer and Balanced Amplifiers Average Detector and ALC circuits Oscillator calibration Oscillator calibration Go toeDon troubleshooting tree Calibrate Calibrate A2Q8 thru tCOUNTER OUTPUT A 0 1 V rms into 50 ohms A intermittent or no signal of the 654A meter indication B 1 dBm or greater B less than IdBm j Amplifier should be a Front panel output connectors C approximately 0 8V...

Страница 40: ... A2 board while morti toring the 26 V If 26 V loads down 5 22 turn off the power and lift one end of A2R20 and A2R25 If the 26 V supply is satisfactory trou bleshoot the Oscillator If the negative voltage still loaded troubleshoot the Buffer Amplifier Balance Amplifier and Average Detector 5 80 PROCEDURE a Lift one side of A2R33 to isolate the Wien Bridge Oscillator from the circuit b Lift the sid...

Страница 41: ... replaced 3 When the amplifier is operating correctly check the frequency response which should remain essentially flat between 10Hz and 10MHz by sweeping the signal generator over that range while maintaining a constant input voltage on the green lead 4 Reconnect A2CI 1 and A2Q7 to ensure that the Peak Detector does not disable the amplifier if it does troubleshoot the Peak Detector If the signal...

Страница 42: ...ds connected together d Set the signal generator frequency to I kHz and the output level to about 25 V rms monitor with an ac voltmeter 5 24 Model 654A e Signal trace the ALC loop Signal levels and voltages should correspond with those shown on the schematics 5 95 TROUBlESHOOTII G THE METER DIFFEREN TIAl AMPLIFIER 5 96 The Meter Differential Amplifier is used for the meter in all functions Use vol...

Страница 43: ...ant to switch contacts or allow lubri cant to contaminate components i H II j 3 0 0 2 F O 0 i 0 z I_ t 1 3 45 I I 250 I _ _ I I D L __________ _____ dTl l TOP COVER 6 HA e J6 Section V e To eliminate excessive contact wear and oxidation the contacts may be lubricated with Electrolube 2G hp Part No 5060 6086 Only a very small amount of lubricant is necessary Note Electro lube 2G will change to a re...

Страница 44: ...Hz 2 5 MHz to 10 MHz 4 3 AMPLITUDE ACCURACY IOdBrn I at I KHz Paragraphs 5 9 50 UNBAL through 5 14 75 UNBAL 135 BAL 150 BAL 600 BAL 0 5 referenced to I KHz level Paragraphs 5 15 4 LEVEL FLATNESS 10 Hz to 10 MHz through 5 20 50 UNBAL 10 dBm odBm 75 UNBAL 10 dBm o dBm 0 5 referenced to I KHz level 10 Hz to 5 MHz 135 BAL IOdBrn odBm 150 BAL 10 dBIll odBm 0 5 referenced to I KHz level O Hz to 1 MHz 60...

Страница 45: ...2nd HALF 7 BALANCE Paragraphs 5 28 through 5 34 Greater than 50 dB 10 Hz to 1 MHz 135 BA L ISO BAL 600 BAL Greater than 40 dB 1 MHz to 5 MHz 135 BAL ISO BAL 600 BAL R DISTORTION Paragraph 5 35 Greater than 40 dB below fundamental 10Hz to I MHz Greater than 34 dB below fund ame ntaI 1 MHz to 10 MHz 9 HUM AND NOISE Paragraph 5 36 Greater than 70 dB below full output 11 clBm 10 COUNTER OUTPUT Paragra...

Страница 46: ...fo negOlt l l c p ll l I tei O In fo lern9tfatl lfl coefl rei tn t nilno ond h t 10 9 second not separEltel y rf ploceahlu otlmlsl or lo r by do npli on oul i dc d illmtlll f peak pico lmpe reld printed circ o Jit picol ad s 10 12 f ir Kk peak Inver se nltage p rt of posll lOnh P l V I Yf en pu w nti Ul1te lf r pe IK I Of ji dk p f Is Jet Ilhon p r I I Of1 t empelill ul C l I en t ItmQ Term SlDtJl...

Страница 47: ...1854 0474 Al06 Q7 1853 0037 Ts r Si PNP 28480 1853 0037 A1Rl 0757 0403 2 R fxd camp 121 n 1 1 8W 24546 C4 1 8 To 121 R F A1R3 0683 3035 2 R f xd comp 30K 5 1 4W 01121 C83035 A1R4 0757 0440 2 R fxd camp 7 5K 1 1 8W 24546 C4 1 8 To 7501 F A1R5 0698 4450 2 R f xd camp 324 n 1 1 8 W 24546 C4 1 8 To 324R F A1R6 0683 0395 4 R fxd camp 3 9 n 5 1 4W 01121 C80395 A1R7 0683 4715 2 R fxd comp 470 n 5 1 4W 01...

Страница 48: ... Type GA Qbd TA Oh d 8131 loa 651 104Z Type GA ulln ROMI 5CI00J3C ROM 15C 220J5C RDM I5 FII11 J3C 81311 00 651 104Z 5635Y5U203Z TA clJ 1 169 3515 TA obO Type GA ohd 301000S3806890 1090187XOO IOF2 0YP TAS107MOIOPI F 1090277XOO15T2 5640 10 PC TASI07M010PIF 81 31 100 651 104Z TQ I 12 DESCRIPTION PC board main oscillator and output C var 2 10 pF C Ixd eer O I uF BO 20 100 vde C Ixd AI 2900 uF 70 10 3 ...

Страница 49: ...034 2 TSTR SI PNP 0471 3 S J3 I97 015 016 18540215 TSTR Si NPN 2N3904 04713 SPS3611 017 1854 0233 TSTR Si NPN 2N3866 02735 obd 018 18540053 TSTA Si NPN 2N221 8 0471 3 2N2218 019 18530012 TSTA Si PNP 2N2904A 0471 3 2N2904A 020 18540053 TSTR Si NPN2N2218 0471 3 2Nn18 021 1853 0012 TSTR Si PNP 2N2904A 04713 2N2904A 022 023 1853 0015 TSTA Si PNP 2N3640 04713 MPS34GO 5 024 1854 0215 TSTR S NPN2N 3904 0...

Страница 50: ... 1 11 8 N 91637 MF I I0 32 obd R59 0757 0283 A Ixd met fin 2000 ohms Hi 1 8 W 14614 C4 obd R60 0757 082R 2 A Ixd met 11m 3010 ohms 1 112 W 91637 MFF 1 2 T I obd A61 A62 0698 3262 R Ixd met 11m 40 2 ohms 1 16299 C4 1 8 Tn 4022 F A63 0757 0410 3 R Ixd met 11m 30 I ohms 1 I 11 8 W 9I637 MF I lO 32 ood R64 06984864 I A Ixd met 11m 499 ohms I 1 2 W 9I637 MFFII2T I obd A65 07570407 A Ixd met 11m 200 ohm...

Страница 51: ...I I JIBW 91637 A Ixd met 11111 100 kiloh 1 1 8 W 91637 0757 0442 R Ixt mel 11m 4 99 kilohm 1 1 1 8 W 06983279 91637 A var 20 kiluhllls I 20 1 2 W 73138 21002030 R I d mel 11111 34HO ohms 1 I 8 W 91637 0698 680 I R var 500 ohms rl IO 1 2 W 21001772 75042 R lx d met 11m 124 kilnhl1lS l 1 J 8 W 07570271 35009 R Ixd met 11m 69 8 kilohm I 8 W 35009 0698 4504 R Ixd co mp I B killlhms 115 114 IN 01121 06...

Страница 52: ...11 2I Type J obd Switch power 3101 0036 I 88140 892806 I SI Switch assembly range S2 00653 61901 I h Cl Type GA obd C2 0150 001 I C ixd Ti02 1 5 pF 20 500 vdew 78488 3 C var 2 10 pF Tellon dieleelrie OOOLC 5640 10 0121 0420 6 C Ixd mica 82 pF 5 72136 ROM150820J3S C4 C3 0140 0146 2 C var 2 10 pF OOOL C 5640 1 0 C5 0120 0420 C Ixd mica 82 pF 5 72136 ROM15E820J3S C6 01400146 C_ var 210pF OOOLC 564011...

Страница 53: ...5 1 1 8 IN R Ixd met 11 m 75 78 ohms 1 0 25 1 8 W A Ixd mel f1m 119 3 ohms 0 25 1 8 W A Ixd met 11m 88 23 ohms 1 0 25 1 8 W A Ixd met 11m 119 3 ohills 0 25 1 8 W R Ixd met 11m 362 6 ohms 0 25 1 8 IV R Ixd met 11m 21 84 ohms 0 25 1 8 W A Ixd mel 11111 362 6 oh ms 1 0 257 118 IN A Ixd mel 11111 21 84 ol1rns 0 20 1 8 W R Ixd mel 11m 362 6 ohms 0 25 118 IV A Ixd met 11m 540 9 ohllls 0 25 118 VI R Ixd ...

Страница 54: ... UNCIRCLED NUMBERS COORDINATE WITH MP NUMBERS ON PAGE 6 j I Y t o 1 D 8 6 ATTACHING HARDWARE I hp PART NO DESCRIPTION 3030 0022 3030 0001 3030 0004 3050 01 80 0510 0054 Figure 6 1 Frequency Tuning Mechanism Screw Set 6 32 x 1 8 in long Screw Set 8 32 x 3 16 in long Screw Set 8 32 x I in long Washer 270 ID x 375 00 Vl b n Ring Retaining 25 00 SHAFT o 0 ...

Страница 55: ... Section VI TOP VIEW BOTTOM VIEW 11 1f 49 48 NUMBERS COORD INATE WITH MP NUMBERS ON PAGE 6 10 Model 654A 45 43 44 Figure 6 2 Chassis Mechanical Parts 6 10 ...

Страница 56: ...2 2 1 2 4 2 1 MECHANICAL PARTS Yoke Flex coupler Yoke Gear a S y Wireform Gear as y Collar Shaft Gear spur ass y shail Casting Cap drive ass y Spring thrust Dial hub Disc vernier drive Deck capacitor Deck main Insulator TSTA Bracket attenuator mount Shield attenuator Insulator feedthrough Holder luse Shield filter Cover plate Shield power Dial Knob dial Ptate IreQ dial Indicator dial Knob FreQ ver...

Страница 57: ... Cable power hp hp hp 5060 8740 Kit rack mount 5H hp 5000 7133 50007126 5000 7134 5000 7135 5000 7136 Label pushbulton 50 ohms Label pushbutton 75 ohms Label pushbulton 135 ohms Label pushbulton 150 ohms Label pushbulton 600 ohms hp hp hp hp hp 00654 90003 Manual operating and service hp 1205 0033 Heat sink semiconductor for A2Q4 Q6 A2018 Q21 and A3Q9 05820 207 CB 5040 0234 5040 0235 Holder lamp B...

Страница 58: ... 1 E _ 4 WIRE COLOR COLOR COOE sTHE SAME AS THE RESISTOR COLOR CODf F IRS T NUM BER INDICATES BAS E COLOR SECONO I NUMBER INDICATES PIN OF XA2 AND PI r 18 I EYELET OR STAND I OFF TERM INA L MA Y OR 8 lk D5w 6 lils Wi iR NS dw O I MAY NjOT UMB O STRIP DENOTE S WH T REO YEL WI RE I e SECTION VII DIAGRAMS printed circuit board and the rotary switches 7 3 General schematic notes which apply to all the...

Страница 59: ... PATH 6 4 t DENOTES AC PATtI FEEDBACK 7 C J DENOTES FRO NT PANI L MARKING DENOTES REAR PA lEL MARKING DENOTES SCREWDRIVU ADJUST 9 ro O DENOTES FRONT PA EL CONTROl II DENOTES POWER LINe GROUND I 1 DENOTES FRA ll GI OL NI 13 WI ENOnS ASSE IIJLY CROLlNI 14 AVERAGE VALLIE SHOWN OPTI IUM V LUE SELEnED AT h TORY COi IPONIcl J MA Y OR MAY NOT IlE PRESENT 15 0 r D NOTlS GROUND CONNECTION ADE WITH ASSLMBLY...

Страница 60: ... A P liT UDE CURRENT REF ERE CE 2 PIO A2 A VERAGE D ETECTOR AMPLITUDE I o l I 2 I I I I I I I I I I 54 OUTPUT ATTENUATOR BAL ANCE D IOdS AND IdB STE PS 3 PIC A3 M ETER OFFS ET CURRE NT REFER ICE 2 A4 BALANCE AND UNBALANCE I MPEDAN CE SWITC H M I 3 A J R53 I rED I A J 4 i UNSAl N O T f I N umt t5 r It e Bloc n1 ICtHI Sc he mal rc or whch fh e c rCllrt o p e Ii 2 S t aragroOh 10 fo fO lbles cO_ll n ...

Страница 61: ...S 14 88 B7 29 D8 44 A6 5 59 fl8 74 D7 89 D5 15 87 IIf 06 30 D9 45 A7 4 60 C7 7 OS 90 D5 16 B8 M 86 31 D9 46 A7 D4 61 86 7 D7 91 AI 17 88 A7 89 3 DR 47 A7 62 89 77 D8 18 7 A9 89 33 D9 48 A7 63 87 n 9 19 D7 88 D9 34 AX 49 A8 64 7 79 7 20 8 6 C8 35 A7 50 A8 65 87 SO 21 D8 B6 C5 36 89 5I A6 66 C8 81 D6 22 9 8 C5 37 52 67 B8 82 D6 23 9 B7 6 38 D6 53 A9 68 C7 83 D5 24 D5 87 39 54 A9 69 D7 84 D6 25 D5 B9...

Страница 62: ...i54A cn 8 C5 RI1 uNOER RI3 wAF R 14 RANGE SWITCH h S2 P Po No 0 0653 1901 ...

Страница 63: ... 3 2 B2 C BI I I B2 03 A l A3 Cl DI 1 1 A2 B 16 17 Ix I SI J I 32 1 1 f J 5 5 112 2 n DI 1 1 A2 CJ BJ BI C2 CI 19 20 21 A 1 1 3 1 2 34 35 36 A I 1 7 l 3 D l C 37 A 8 04 AS I B2 23 A2 1 Ih 9 A3 1 5 A C3 4 AJ A5 1 6 10 BI S5 2 1 25 A4 8 40 B5 II CI D2 C 26 1 2 BI 08 I 12 01 A2 B5 27 C2 42 13 B3 03 2X B3 4 1 B5 l l 81 29 15 1 1 30 AI PIO Figure 7 3 Balanced Amplifier Meter and Leveling 7 6 r t f ...

Страница 64: ...YI ELD AB OUT THE SAM E RESULTS 65 A 8 1196 A3 hp Port No 006 54 6650 3 A2 SCHEMATIC COMPONENT LOCATIONS Q C CR C R C R R R II F3 26 DIO 41 BI7 56 H5 71 DI I 86 AI 5 12 F4 27 EJO 42 BI6 57 F6 72 FII 87 BI5 13 F5 E4 28 0 12 43 CI4 58 F6 73 HI I 88 CIS 14 F6 H5 29 FI 2 44 F2 CI7 59 H6 74 EI 3 89 CI 6 IS F7 C6 07 30 FI 2 45 E3 AI5 60 0 7 75 EI 3 90 AI 5 16 F9 E4 E7 31 CI 2 46 H3 CI S 61 E7 76 01 4 91...

Страница 65: ...S WERE OBSERVED UNDER THE FOLLOWING CONDI TIONS A 654A RANGE XIOK DIAL I IMPEDANCE 75 UNBAL OUTPUT LEVE L 10 dBm AMPLITUDE SET FOR 0 ON METER 8 ALL VOLTAGES 10 C VOLTAGES WERE TAKEN WITH ANHp MODEL 3440A DIGITAL VOLTMETER HAVING A 3443A PLUG IN HOWEVER ANY DC VOLTMETER WITH APPRO XIMATELY 10 MEGOHMS INPUT IMPEDANCE WILL YIELD ABOUT THE SAME RESULTS 654 A S 1784 A4 np Part No 00654 66504 ...

Страница 66: ... Q Q 5 el5ua I I I j I I I I C23 I I 4 C24 I I 654 6 4424 AI hp Part No 00653 66507 Rev A NOTES OC LEVELS WERE OBSERVED UNDER THE FO LL OWING CONOI TIONS A 654A RANGE X10K DIAL I IMPEDANCE 75 UNBAL OUTPUT LEVEL 10 d8m AMPLI TUDE SET FOR 0 ON METER 8 AL L VOLTAGES f 10 C VO LTAGES WERE TAKEN WITH AN HP MODEL 3440A DIGITAL VO LTMETER HAVING A 3443A PLUG IN HOWEVER ANY DC VO LTMETE R WITH APPROXIMATE...

Страница 67: ...K 2 4K _I R9 CRI5 CRI4 16 2V I 3 9 R I I CR3 100 RI3 121 _ 3 3 1 f GW b h C r NC R35 324 I C21 25V I CI4 D5 ADJ 1 1 R36 I R41 7 5K K CR23 R30 CR4 5 761 L Ir rERN LLV CONN CTED TO r olE 9 i ELO CR20 6 2v R38 R39 30 2 4K CR25 JICR24 16 2 v L_ p I I C OPfflIG HT 1975 8 HEw LE fi PACKARD COMPANY D 4423 NOTES DC LEVELS WERE OBSERVED UNDER THE FOLLOWING CONDI TIONS A 654A RANGE X10K DIAL 1 IMPED ANCE 75...

Страница 68: ...t I lric Co rp Nc wa rk N J conductor and Mate rial s Se nll rond J c t f OJ M O HH4In VI Cal 14 674 Corning Glass Works Corning N Y DlyislOn Somerville N r 07322 M mltt 11 t l Rulllx r Mlnne3 polis Minn 14752 El Iro Cube Inc San Gabncl Cal 02771 Vocaline Co of America 07387 Blrt ch Corp T he Montere y P r k C It 14960 William s Mfg Co San Jose Cal In c Old Saybr ool Conn 07397 Sylv lOl 1 Elect Pr...

Страница 69: ...Croovl P In C C 1 p RIc1 J H ld N J 820 C Irlt r l r cl l 11m Et lrI C Co Skoki e III k N J 5 938 RJ yt heon Co Comm e r C lai Appar tu s 74276 SIr nallt Ille Nc plUIIC N 2041 p r U rH ld l In CopPE r Hl Vl tI J Y g Sy lt m OIV So orwalk Conn 74455 J I1 WIIlI I S Ind 5f ns Wln h I r M l sr El t tfl t 01 Ht bokcn N J eI C 1 56137 Spau dln Fibr e Co Inc Tonawanda NY 74Rftl Indu5t r l tI Cflnd n r Cn...

Страница 70: ...erson N J 98731 General Mills tne Electronic s Div 89479 Security Co Detroit Mich 94222 South Chester Corp Chester Pa Minneapolis Minn 89665 United Transformer Co Chicago Ill 94330 Wire C10lh Products Inc Bellwood Ill 98734 Paeeo DiV ISion of Hewle tt Packard Co 90030 United Shoe Machinery Corp Beverly Mass 94375 Automatic Metal Products Co Brooklyn N Y Palo Alto Cal 90179 U S Rubber Co Consumer I...

Страница 71: ...o 0757 0442 Change A2RI2 to R fxd 4 02 krl 1 1 8 W hp Part No 0698 3558 Figure 7 2 Change the value of A2RII to 10 krl and the value of A2R 12 to 4 02 krl CHANGE NO 2 Table 6 1 Change the hp Part No of J I to 1251 0148 Change the hp Part No of WI to 8120 0078 Change the hp Part No of Panel rear to 00653 00202 Mechanical Parts Change the hp Part No of MPI7 to 00653 01204 Delete MP50 Bracket Attenua...

Страница 72: ...Paragraph 545 with the following 5 45 POWER SUPPLY VOLTAGE ADJUSTMENTS a Connect a dc voltmeter to the power supply positive output AI Pin 12 b Adjust AIRI4 30 V Adjust for 31 0 2V c Connect the dc voltmeter to the power supply negative output AI Pin 13 The voltage should be 26 0 5 V if not change the value of AI R15 to obtain the required voltage increasing the value of AI R15 makes the power sup...

Страница 73: ...2N3906 C 713 8 S S 3612 03 1353 0031 TSTR Si PN P2N4036 C 713 S52109 04 05 1853 0036 T5TR Si PN P2N3 l06 01113 SP53ti12 RI hruA4 4 0683 3925 A IxJ comp 39QO ohms 1 5 1 4 W 01121 C83925 Q S 6 7S25 AS CI 21 I R Ixd eomp 7500 ohms 1 5 r 1 2 W Ea1525 R6 06B I 153 I A hd camp 15kilu hms I IOS 112 W U11 2I E81531 RI 06 3433 S 1 A Ixd a TIp 43 kilohm 1 5 1 4 W 011 Zl C84335 R3 R Ixd co n p 3900 ohms I Im...

Страница 74: ... and C 5 Model 654A C I R 13 Q _c J Co CR7 1 RI7 _ Q j11 1 V r UJ J I12 e RS_ C R7 CR5 C3 II R 0 R 3 Q rr CI f I 10 CR6 V CH9 0 _ i R6 RI2 RI R3 01 u C2 l I R5 9 0 R4 R2 sO CRI CR2 Ci 3 CR4 1 28 7 C9 6 5 4G C Q 3 _ _ AI hp Par No 00654 66501 Figure C 4 A1 Component Locator j O 3900 Figure C 5 A1 Schematic Diagram C4 ...

Страница 75: ...r F iOW HEWLETT PACKARD Printed in U S A ...

Страница 76: ...Ounted nstrurnenr can he accomplished by USing the Rack Mourn K t Op tion 908 CHANGE NO 3 for all serial numbers Page 5 2 TAble 5 1 Ch n9 thp rmal co nverter Ie I 600 ohms halancer Port number to hp pa rt numb r H 13 11 04 9A Page 5 5 Table 5 3 Ch ange thermal converte r part number for 600 SA L to hp part number H 13 1 1049 A Page 5 19 A dd Tabl 5 4A Paddlny Lilt A4 Cl Val ue hp Part No 24pF 30 F...

Страница 77: ...he asterisk I w hich denotes a component that may be padded on the follow ing components C3 C5 0140 01 46 Cl C 13 C17 0 1500011 C1 6 Cl 8 0150 0029 C9 e ll 0160 0763 C 15 C7 0160 2322 A2 0686 1545 AIO 0686 1855 Plge fi 7 Add the following part 10 the S2 00653 6190 II Aange Switch Assembly list hp Plr1 No TO Descriplion 2 260 000 2 Hex Nut Page 6 S Delete CR4 I hp Pan Number 190 03471 Plge 7 9 7 O ...

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HP 654A, Руководство по эксплуатации и обслуживанию

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