HP 608E Operating And Service Manual Download

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Summary of Contents for 608E

Page 1: ... 60BE F VHF SIGNAl GENERATOR HP PART NUMBER 00608 90046 rli HEWLETT PACKARD l ...

Page 2: ...2720 GOBE and 832 above 01500 608F SERIAL PREFIXES NOT LIST l For instruments with lower serial number prefixes a Backdating Appendix is supplied in the back of this manual Flio HEWLETT r I PACKARD Copyright HEWLETT PACKARD COMPANY 1965 1501 PAGE MILL ROAD PALO ALTO CALIFORNIA U S A OPERATING AND SERVICE MANUAL PART NO 00608 90046 Operating end Service Menual MIcrofiche Part No 00608 90047 Printed...

Page 3: ...g Adjustment RF Output Meter Accuracy Adjustment RF Output Meter AUenuator Frequency Response and Auto matic Leveling Output Adjustment Crystal Calibrator Adjustment Troubleshooting Isolating a Trouble to a Circuit Section Isolating Trouble in Transistor Circuits Replacement and Repair Etched Circuit Board Repair Component Replacement Etched Conductor Repair Transistor and Semiconductor Diode Repl...

Page 4: ...n 140 Oscilloscope at 50 modulation Location of Leveling and RF Output Meter Adjustment Location of RF Oscillator Adjustment Page 1 0 3 2 3 6 3 8 3 10 4 0 5 3 5 4 5 5 5 6 5 7 5 8 5 5 10 5 10 5 11 5 11 5 12 5 13 5 14 5 14 5 15 5 16 5 18 5 19 5 20 5 21 5_22 5 23 5 24 5 25 5 26 5_27 5 28 5_29 5 30 5_31 5 32 5 33 7 1 7 2 7 3 7 4 7 5 TtUe Frequency Response Adjustments Location of Frequency Response an...

Page 5: ...cuit Transistor Resistance Measurement Safe Ohmmeter Ranges for Transistor Resistance Measurement Etched Circuit Soldering Equipment Checks Following Tube and Semiconductor Replacement 608E F Troubleshooting Procedure Reference Designations Abbreviations Replaceable Parts Code List of Manufacturers Page 1 2 5 2 5 4 5 25 5 25 5 26 5 27 5 40 6 2 6 2 6 4 6 12 List of Tables v ...

Page 6: ... c JP Section I o G eA f l o o Model 608EIF e I Model 608E e 1iJ1iia V Model 608F 1 0 Figure 1 1 Model 60SE and 608F VHF Signal Generators ...

Page 7: ...d the VSWR at the RF OUTPUT connector will nol be greater than 1 2 SWR of 1 6 dB The signal generators feature automatic output leveling maintaining the RF output within 1 dB ofthe adjusted output 1 5 MODULATION 1 6 The RFoutput signal can be amplitude modulated by internally generated 400 or lOOO cyde sine waves externally applied sine waves above 1 0 volt rms over the frequency range from 20 Hz ...

Page 8: ... bands Adjustment of front panel AMP TRIMMER control only for maximum RF output indication automatically restores ini tial carr ier level for greater frequency changes Impedance 50n reflection coefficient 0 091 1 2 SWR 20 8 dB return loss for attenuator setting below 7 dBm Resettability Main frequency control resettability better than G 1 after initial warmup FINE FREQUENCY ADJUST prOVides approxi...

Page 9: ...z modulation Less than 1000 Hz peak at 50 AM for frequen cies above 100 MHz For frequencies below 100 MHz less than 0 001 at 30 AM External Pulse Modulation Rise and Decay Time From 40 MHz to 220 MHz combined rise and decay time less than 4 s i f I t k 0 RUR Weight Cabinet Mount Net 62 Ib 28 kg Shipping 74 Ib 33 4 kg Rack Mount Net 62 lb 28 kg Shipping 83 lb 37 4 kg Accessories Available 11508AOut...

Page 10: ...ment is equipped with a three conductor power cable Which when plugged into an appropriate receptable grounds the instrument The off set pin of the three prong connector is the ground pin To preserve the protection feature when operating the instrument from a two contact outlet use a three prong to two prong adapter Hewlett Packard Stock No 1251 0049 and connect the green pigtail on the adapter to...

Page 11: ...rable difference between the output voltage se lected on the Attenuator Control dial and the actual voltage impressed across the external load Partic ular care should be exercised in the selection of coaxial cormectorS A coaxial connector that has been improperly assembled can produce a substantial increase in the standing wave ratio 3 9 TURN ON PROCEDURES 3 10 Turn on procedures for the signal ge...

Page 12: ...ULATION meter Indicates the percent of modulation of the RF output signal 3 Panel marker Scribed mark for cursor align ment 4 ZERO control Screwdriver adjustment to electrically zero the PERCENT MODULA TION meter 5 RF OUTPUT control Controls RF power input to the attenuator Also controls output power levels between 7 dBm and 13 dBm in the Model608E Figure 3 1 Front Panel Controls Indicators and Co...

Page 13: ...uring external sine wave or pulse operation During internal sine wave modulation a 400 or 1000 Hz signal is available at the connector for synchronizing external equipment 15 UNCAL RF OUTPUT connector Ultput con nector in the 608E delivers an uncalibrated unmodulated RF signal to external equipment In the Model 608F used with the Model 8708A Synchronizer output connector delivers an uncalibrated F...

Page 14: ... RF OUTPUT and AMPL TRIMMER controls in conjunction with the RFOUTPUTmeter The take off point for the detected RF signal displayed on the RF OUTPUT meter is at the input circuit of the attenua tor Therefore calibrating the RF output into the at tenuator ensures that subsequent operation of the at tenuator control will produce an accurate calibrated RF output from the attenuator RF output calibrati...

Page 15: ...utput from the instruments Figure 3 3 illustrates and describes the operation of control8 Section III indicators and connectors used in the three opera tions 3 22 PHASE LOCK OPERATING PROCEDURES MODEL 608F ONLY 3 23 The RF Generator section in the Model 60SF signal generator is designed for phase lock operation with the Model 8708A Synchronizer_ This method of operation provides a highly stable ou...

Page 16: ...Section ill 14 _ 8 12 2 3 1 HEIf l r r I I D 6 Model 608E F 1 7 11 1 _ 4 13 9 10 5 3 6 Figure 3 2 Controls Indicators and Connectors Used in Operation with Internally Generated Signals ...

Page 17: ...frequency dial refer to procedures listed in paragraph 3 13 Section III 7 Depress and tune AMPL TRIMMER control for maximum indication on RF OUTPUT meter 8 Adjust RF OUTPUT control until RF OUTPUT Meter pointer is aligned with 7 dBm mark ATTENUATOR CALIBRATED NOTE Accuracy of the Attenuator Control setting and PERCENT MODULATION JIleter are within specifications only when the RF OUT PUT meter is i...

Page 18: ...el 608E F 6 J 71 11 4 13 16 11 20 L O 22 5 1 Align cursor knob with panel marker 2 Align FINE FREQ control with panel marker 3 Set FREQUENCY RANGE switch to desired range frequency limits for each range shown on ME ACYCLESdial hOUSing Figure 3 3 Controls Indicators and Connectors Used in Operation with Externally Supplied Signals 3 8 ...

Page 19: ...gh 12 In this operation the RF OUTPUT meter pointer is used to indi cate the power output level in lieu of the Attenu ator Control 10 Adjust the Attenuator Control to the 7 dBm dial mark Section ill 11 Check that the RF OUTPUT meter pointer in dicates ATTENUATOR CALIBRATED 12 Adjust the RF OUTPUT controliorthe desired output level above 7 dBm as indicated by the RF OUTPUT meter pointer 13 Set the ...

Page 20: ...Section III 8 __ 2 3 12 1 10 11 6 Model 608E F 7 4 5 J 3 10 Figure 3 4 Controls Indicators and Connectors Used in Phase Lock Operation Model 608F Only ...

Page 21: ...ency Control until MEGA CYCLES dial cursor is aligned with frequency to be used as indicated on the dial face Section III NOTE To crystal calibrate the frequency refer to procedures listed in paragraph 3 13 7 Depress and tune AMPL TRIMMER control for maximum indication on RF OUTPUT meter 8 Adjust RF OUTPUT control until RF OUTPUT meter pointer is aligned with 7 dBm mark ATTENUATOR CALIBRATED NOTE ...

Page 22: ... J R fF 11_ _1 J ATTENUATOR SECTION AT P f LE J ING FEEDBACK r OETECTED RF METER CA L_ 2 PERCENT MODULATION 4l IZERO I MODULATION METER SECTION VIS V19 V20 V21 METER CAL AMPLITUDE MODULATION BALANCE SECTION METER TRACKING n Q2 THRU 09 rR FI L T r r j J J J 1 225 16 5 63 PART OF I IAMPL TRIMMERI I I I POWER suPPLY SECTION 0 I I T T T I v12 I VI I IMOOULATlON I I V13 010 VI5 Ql SELECTOR SW O VI6B 10...

Page 23: ... tion The interconnected control permits peaking the RF output ofthe instrument and maintaininga fixed RF output across the frequency range of the instrument Tuning the control without engaging the pushbutton pro vides a fine tune adjustment which is used in conjunc tion with the RF OUTPUT control to maintain a fixed leveled RF output regardless ofthe selected frequency DepreSSing the control and ...

Page 24: ...erential amplifier stage Opera tion of the remaining circuits and controls in the Am plitude Modulation Section is identical to that described in paragraph 4 11 4 2 Model 608E F 4 13 EXTERNAL PULSE MODULATION To set the signal generators for external pulse modulation the desired RFoutput level and operating characteristics of the Amplitude Modulation Section are established with the MODULATION sel...

Page 25: ... Amplitude Modulation Section Attenuator Section Calibrator Section Modulation Meter Section and the Power Supply Section Figures 7 4 and 7 5 will be used as reference during the des cription and where tr nsition from one diagram to the second is required appropriate notice will be made 4 25 RF GENERATOR SECTION MODEL 608E 4 26 The RF Generator Section in the Model 60SE includes RF Oscillator V6 B...

Page 26: ...mplitude Modulation Section through isolation network LII During CW operation only the RF leveling signal is received from the 4 4 Model608E F Amplitude Modulation Section Diode CR7 connected in the signal path prevents damage to Power Amplifier V8 by limiting the negative swing ri the cathode Ca pacitor C32 is connected in the plate circuit of VB in the Model 608F only and is adjusted for improve...

Page 27: ...lso applied through resistor R201 Meter Cal potentiometer R202 Section IV MODULATION switch wafer 4F and AMPL TRIM MER pushbutton switch S6 to RF OUTPUT meter M1 Operahng characteristics of switch S6 and the RF OUTPUT meter are contained in paragraph 4 45 4 41 Balance potentiometer R203 is a board adjust ment in the emitter circuit of Differential Amplifier Q2 and Q3 used to set the stage for prop...

Page 28: ...h position 5 to establish operating conditions in the out put circuit of the Amplitude Modulation Section and 4 6 Model 608E F consequently the RF output level of the instrument The switch is then set to the PULSE position switch position 6 to pulse modulate the RF carrier In both positions Modulation Oscillator V2 is disabled and the input signal path through MODULATION control re sistor R210 is ...

Page 29: ...ntrols are adjusted for the RF OUTPUT meter indication of 7 dBm as previously discussed The desired output level above 7 dBm is then selected by operation of the RF OUTPUT control only and the output is read directly from the RF OUT PUT meter Section IV 4 54 Two parallel wires crossing the open end of the attenuator housing are used to provide a sample of RF energy delivered by Power Amplifier V8 ...

Page 30: ...225 VOLT SUPPLY Input ac voltage to the 225 volt supply is received across transformer 4 8 Model 60aE F T1 The secondary contains bridge rectifier CRa through CRll and filter capacitor C40 The supply is series regulated through triodes V13A V13B and VI6B with the output connected to the load through front panel mounted DC 0 25 AMP fuse F3 The 165 Volt Power Supply output is used as reference being...

Page 31: ...t setup illustrated in Figure 5 3 5 5 If the equipment has been subjected to unusual conditions excessive moisture dust heat vibration etc it is suggested that the ii st U l c cemoved from the cabinet and inspected for dirt or moisture accumulation loosened components or any possible sign of damage Forced air under medium pressure is recommended for dusting and drying although care must be taken n...

Page 32: ...on Analyzer Range 5 Hz to 600 kHz HP 334A Accuracy 1 3 Deviation Meter Frequency Range 50 to 150 MHz Measurements Corp Accuracy 1 3 Model 140 Deviation Range 0 to 5 kHz Power Supply 2 to 32 V variable HP 6217A OsCilloscope F r ical Bandwidth 5 MHz HP 140A with 1402A and Vertical sensitivity 5 mV cm 1420A plug in units Adapter None UG 201A U Crystal Detector Frequency Range 10 MHz to 12 4 GHz HP 42...

Page 33: ...ency 100 kHz Frequency Meter Discriminator Output 100 kHz V HP 5210AIlO531A Filter Kit Disc Out Accuracy Better than 1 Internal Filter 10 kHz low pass Oscilloscope Bandwidth o to 20 MHz HP 140 with 1406A plug in unit Vert Sensitivity 50 JJ V tm LAB Dual Range Output o to 20 Vd HP 6204B DC Power Supply Electronic Counter Resolution 5 digits HP 5246L with 5252A Function Frequency to 350 MHz plug in ...

Page 34: ...er sliding coupler Light machine oil AttenuataI pulleys Light machine oil Attenuator drive shaft bearing front Light machine oil Attenuator drive shaft bearing rear Light machine oil FREQ DRIVE MEGACYCLES DIAL HUB RF AMP SLIDING COUPLER RF AMP CAPAC I TOR DRIVE SHAFT FREQ STOP GEAR RF OSC CAPACITOR DRIVE SHAFT I I _ AMP TRIMMER DRIVE LINK FINE FREQ ADJUST AMP TRIMMER STOP MECHANISM AMP TRIMMER OSC...

Page 35: ... a Connect signal generator in test setup illus trated in Figure 5 3 b Set FREQUENCY RANGE switch to range A c Adjust frequency control for a MEGACYCLES dial reading of 15 MHz d Adjust RF OUTPUT and attenuator controls for proper triggering of electronic counter Allow signal generator to stabilize i e for one hour after turn on and 25 minutes after a frequency change e Record electronic counter in...

Page 36: ... imum deviation h Repeat steps d through f at the FREQUENCY RANGE and MEGACYCLES dial settings listed with applicable oscilloscope indications in the following chart OSCILLOSCOPE INDICATION FREQ RANGE FREQ RESIDUAL FM MAXIMUM DEY B 30 MHz 300 IJ V pk pk 30 Hz pk pk C 70 MHz 700 p V pk pk 70 Hz pk pk 0 150 MHz 1 5 mV pk pk 150 Hz pk pk E 300 MHz 3 mV pk pk 300 Hz pk pk E 400 MHz 4 mV pk pk 400 Hz p...

Page 37: ...or output of 0 dEmo h Readjust frequency control for a 50 kHz indica tion on frequency meter on 100 kHz range i Measure peak to peak amplitude of signal dis played on oscilloscope Measurement should not ex ceed 2 0 mY peak to peak 200 Hz peak to peak maximum deviation 60BE F SIGNAL GENERATOR o 0 8491 0 10 OB ATTENUo TOfl 478A T ERMISTOR MOUNT 432 METER j Repeat steps h d i t the FREQUENCY RANGE an...

Page 38: ...08E f SIGNAL GENERATOR e Adjust RF OUTPUT control approximately one quarter turn from counter clockwise stop f Adjust AMPL TRIMMER control knob arrow to eight o clock position and tune t ressing slowly clockwise RF OUTPUT meter needle should follow right and kick back suddenly Stop tuning AMPL TRIMMER control when needle kicks g Adjust RF OUTPUT control for an RF OUTPUT meter indication of 7 dBm A...

Page 39: ...er a COIUlect signal generator in test setup illustrated in Figure 5 8 b set FREQUENCY RANGE switch to range C and adjust frequency control for a MEGACYCLES dial reading of 70 MHz i Measure peak to peak amplitude in centimeters of modulation envelope from uppermost peak to upper most trough Amplitude should be 4 5 0 5 em 90 10 modulation c Set MODULATION switch to CW position d Adjust RF OUTPUT co...

Page 40: ...cation of 7 dBm L Set MODULATION switch to PULSE position j Adjust pulse generator for lo volts positive output 10 p S wide k Oscilloscope should indicate a combined pulse rise and decay time of 4 JoLsec maximum and a pulse width of 10 l 5 sec 1 Set FREQUENCY RANGE switch to range E m Adjust frequency control for MEGACYCLES dial setting of 220 MHz q Set MODULATION switch to PULSE position Power me...

Page 41: ...antelUla see Figure 5 1 to cable j Probe with loop antenna over entire signal g e n e rat 0 r cabinet area The spectrum analyzer indication should not exceed 1 l V S08E1F SIGNAL GENERATOR o 0 d COlUlect power supply and adjust for 2 Vdc at FREQ CONTROL INPUT NOTE frequency counter reading e Adjust power supply for 32 Vdc at FREQ CONTROL INPUT The frequency counter should indicate a frequency chang...

Page 42: ...k point On the oscilloscope the dc level will shUt to apprOXimately 3 0 V when the frequency is increased and apprOXimately 1 0 V when the frequency is decreased The oscilloscope trace should not jump outside the the 3V and 1 V limits this indicates weak locking due to either 608F or the 8708A e Repeat steps c and d for frequency ranges B through E 5 29 ADJUSTMENT 608F FREQUENCY RANGE FREQUENCY MO...

Page 43: ...er supply rectifiers c Adjust line voltage transformer to deliver 115 or 230 volts Be sure 115 230 volt switch is set correctly Figure 5 13 Location of P0we l ld Modulation Meter Adjustments d Measure and if necessary adjust the following voltages Voltage Adjustment Figure 5 13 165 5 R80 225 5 R71 25 1 Replace CR28 if necessary 7 2 G 3 Replace CR20 if necessary c Adjust mechanical zero adjust scre...

Page 44: ...ctor to CWo VERT SENS 0 2 V cm HOR SWEEP TIME 0 2 ms cm TRIGGER SOURCE NT or NT d Adjust vertical position to place pattern at center of screen e Set MODULATION selector to 1000 Adjust 608E F Attenuator for a 4 cm pattern on screen c Adjust R204 Figure 5 14 to point where dc voltmeter shows no f u rt he r voltage increase witi l adjustment of R204 d DC voltmeter should indicate greater than 30 vol...

Page 45: ...to CW and PULSE SET RF OUTPUT pOSitions dc voltmeter shouldindi cate 0 3 to 1 0 volt dc at each switch position j Set MODULATION selector to PULSE volt meter should i dicate greater than 20 volts 5 42 RF OSCILLATOR ADJUSTMENT a Connect signal generator in test setup shown in Figure 5 11 omitting Harrison Power Supply b Set FREQUENCY RANGE switch to band A c Center FINE FREQ and cursor controls d A...

Page 46: ... n Adjust Attenuator control for output of 1 0dBm o Adjust RF OUTPUT control for power meter readings sho lifl below Calibrate the output meter by adjusting R202 and R209 as Indicated NOTE In the Model 608F the RF OUTPUT meter is cal1brated using full scale deflection when the power meter is indicating 5 dBm During normal operation only half scale 7 dBm deflection is use d indicating the maximum R...

Page 47: ...oils closer to the attenu ator and more negative by moving the coils further away THERE IS HIGH VOLTAGE ON ALL AMPLIFIER COILS AND ON THE STATOR OF TUNING CAPACITOR C17 MAKE CERTAIN THAT THERE IS SUFFI CIENT CLEARANCE BETWEEN THE COILS AND THE ATTENUATOR PROBE PICKUP LOOP Band E pre sents a different problem The ampli fier coil is not adjustable so the pro cedure calls for changing the bolometer r...

Page 48: ...CIRCUIT SECTION 5 51 To isolate a trouble to a particular circuit a troubleshooting tree table 5 7 is presented The tree presents five major problems that can occur dur ing operation of the signal generators and Includes block to block instructions for maintenance personnel to trace a malfunction to a particular circuit Normal shoptroubleshoottng practices must be employed after the trouble has be...

Page 49: ...I 63VAC 00 6 00 0 1 234 631 AC on 01 0 50 00 OV i 00 220K 0 1 0 5 1 on lOOK XVIO 12AT7 CAL BRATOR AMPLIFIER I 66 1 ___ If 1 RIGHT SIDE I 10 rn 0 i I 04 13 7 1 7 1 1 L_ I I _ _ _ _ _ J 0 13 V I 14 0 1 I L4V I L L l L I I I Q2 I4V 7 1 1 0 31 1 XV2 12AU7 MOO OSCILLATOR Figure 5 20 Voltage and R sistance Measurements INT 1000 Operation sheet 1 of 3 r I I I I I I I 6 6 1 I 1400 0 1 I 6 3VAC 1 15M cI 00...

Page 50: ... I I I I I 1 I I I 6K o UL 6 176 xv 19 METER AMPLIFIER 2ND ST IlGE 6 0 H 6 7K 165V 19 165 1 K 0 00 L 1 CQ I I I I 1 I I I _____ 1 0 0 1 I I REAR CHASSIS 7 5 1 SEE NOTE SHEET I I 1 3 II I 90 175 n I 200K J _ i _ cS 6 0 i r r I I 00 175 It 1 4 V XV18 0 MOO I lETER AMPLIFIER MOO 1ST STAGE 6AH6 1 4 II 6 3 lAC 1 3 II ms n 6K 170 11 0 6 3 VAC 0 6K 470K 10 470 K m 2011 Figure 5 20 Voltage and RcsI8tancc ...

Page 51: ...EFT SIDE I I I SEE NOTE SHEET II I I I y Il I I I L _ I I I L XV9 GO SEE CHART ABOVE l VOLTAGE RESISTANCE XTAL CAL AT XTAL CAL AT e M M M M 210 2 20 lOOK lOOK 6 300K OOK 220 220 lOOK lOOK 0 0 0 0 6 3AC 6 JAC 0 0 21 0 220 lOOK lOOK 0 0 0 0 0 0 0 0 D V8 POWER AMPLIfiER 4043 6 3 V HEATER h n on IV TO 30V 106 1 N l oo 90K 330K o n o V GAl 0 _________ on on 1 1 iiK 215 V ANODE 180 K ...

Page 52: ...OL fREQUENCY RF OUTPUT AND ATTENUATOR CONTROL SETTINGS SAME AS FIGURE 5 20 7 IV 0 31 1 N N 24 lV 0 IOV 2 9 1 g I L OT RIGHT SIDE PULSE SET RF POSITION Figure 5 21 ALe Board Voltage and Resistance Measurements CW and PULSE SET R F OUTPUT Operation 4 8 0 8 I 25 5 1 I _ _ J J I r I II I I I Il ll I L __ j _ j 6 6 0 J I J 1t t J I I I I _ _ _ _ _ J 03 I I L _ _ _ _ _ L L _ l C I I 0 03 1 4 8 1 0 27 1 ...

Page 53: ... base diode is biased for conduction forward biased by measuring the voltage difference between emitter and base When using an electronic voltmeter do not measure directly between emitter and base there may be sufficient loop current between the voltmeter leads to damage the transistor Instead measure to a com mon point e g chassis If the emitter base diode is forward biased check for amplifier ac...

Page 54: ...AIN P N P TRANSISTOR ov 3 1 yRRENT ORt ONTR00 EMITTER CURRENT B AMPLIFIER CHARACTERISTICS CHARACTERISTIC CONMON CONNON CONNON BASE ENITTER COLLECTOR INPUT Z 30 500 500 15000 20 500K n OUTPUTZ 3OO 500K 0 3O 5OK n 50 1000 n VOLTAGE GAIN 500 1500 300 1000 I CURRENT GAIN I 25 50 25 50 POWER GAIN 20 30dB 25 40 dB 1O 20dB 15V 1 5V 15V r OUTPUT f INPUT l J OUTPUT INPUT INPUT 1 OUTPUT Figure 5 22 Transist...

Page 55: ...ion component as original was positioned 00 NOT FORCE LEADS OF REPLACEMENT COMPO NENT INTO MOUNTING HOLES Sharp leads ends may damage plated through conductor Section V NOTE Axial lead components such as resistors and tubular capacitors can be replaced without unsoldering Clip leads near body of defective component remove component and straighten leads left in board Wrap leads of replacement compo...

Page 56: ...s Humiseal Protective Coat ing Type IB12 by Columbia Technical Corp Woodside 77 New York Krylon Inc Norristown PelUlsylvania 5 66 TRANSISTOR AND SEMICONDUcrOR DIODE REPLACEMENT a Do not apply excessive heat See Table 5 5 for soldering tool specifications b Use a heat sink such as pliers between semi conductor body and hot soldering iron c When installing a replacement semiconductor ensure sufficie...

Page 57: ...ion 5 22 Q5 Leveling 5 18 External Pulse Modulation 5 24 Q6 Leveling 5 18 Internal Modulation 5 22 Q7 Leveling 5 18 Internal Modulation 5 22 Q8 Leveling 5 18 Internal Modulation 5 22 Q9 Leveling 5 18 Internal Modulation 5 22 QIO Power Supply 25 5 31 Qll Power Supply 25 5 31 CRl Crystal Calibrator Accuracy 5 13 CR2 Modulation Meter Accuracy 5 21 CR7 Leveling 5 18 CRB Power Supply 225 5 31 CR9 Power...

Page 58: ...B and Buffer V22 refer to Figure 5 24 and proceed as follows j USing internal beat frequency calibrator check frequency calibration throughout range of signal gen erator noting points that are significantly oU fre quency k To correct calibration at the high frequency end of all bands simultaneously adjust t rim mer capacitor C18 in the 608E and C59 in the 608F which i8 ac c e 5 5 i b 1 e in tube c...

Page 59: ...e probe slightly do not attempt to straighten them since these fingers have been bent to assure clearance between the probe and the end of the guide slot in the attenuator housing It is of greatest importance to make certain that the probe is not subjected to shock If subjected to shock the electrical com ponents attached to the end of the probe can be broken or their positions altered with a cons...

Page 60: ...move probe split drive screw from probe body by removing inner nut and unscrewing CAUTION These resistors are easily damaged by ex cessive heat Use low temperature solder ing iron and solder connections as quickly as possible d Remove probe by carefuUy sliding it out of atten uator housing 5 79 Measure resistors for any possible change tn resistance due to soldering The VSWR will not be changed ap...

Page 61: ...RF cable to clamp on side gusset e Connect instrument to a source of lI5 volt for 230 volt power and turn on POWER switch Unless otherwise specified operating controls should be set as follows MODULATION Selector Frequency dial FREQUENCY RANGE AMPL TRIMMER Adjust for max RF OUTPUT meter MODULATION control Attenuator cw 70 MHz band C RF output 7 dBm max ccw odBm g Remove RF Generator side plate so ...

Page 62: ... another To compensate for differences Model 608E F between lamps potentiometer R7 is provided for ad justment of the oscillator output voltage level After lamp n has been replaced the oscillator output volt age as measured at pin 3 of V2 should be adjusted to 2 volts rms if it cannot be adjusted to this value another lamp must be tried 5 85 LOCATION OF PARTS 5 86 To enable maintenance personnel t...

Page 63: ... V6 C59 R253 R252 R250 C218 HIDDEN R251 C219 C22 L20 R256 LII Section V R258 RI18 CR7 FL9 C220 V22 R257 R254 C224 L22 VB RI14 Figure 5 28 Model 6G8E RF Generator Assembly Showing Location of Unlabeled Parts Top Cover Removed 5 33 ...

Page 64: ...Section V Model 608E F ...

Page 65: ... Model 608E F C205 C206 R262 R263 MODULATOR AND ALe BOARD R51 T2 Section V cr DANGER jj HIGH VOll G W iOlTS C I I o Figure 5 30 Right Side View Showing Location of Unlabeled Chassis Components 5 35 ...

Page 66: ...Section V Model 608E F FL6 FL FLIO FL 11 HIDDEN FL FLI 608F ONLY 1 w J I I 11 0 _ d 6 FL8 FL7 FL2 FLS JS Figure 5 31 Left Side View Sbowing Location of Unlabeled Components 5 36 ...

Page 67: ... Model 608E F C39 R8S Ra9 C5t R94 R95 C62 C57 C58 C56 R77 R6B Section V I I Figure 5 32 Rear View Showing Location of Unlabeled Chassis Components 5 37 ...

Page 68: ...bly Stock No 00608 60044 _ _ R75 _ _ C43 L R79 J R74 ___ R1I5 ___ R73 __ RI02 __ R96 C53 R90 R91 C50 J R72 _ __ R65 __ R67 L __ C41 1 _ R69 U i _ R66 R54 _ C34 R53 C35 R50 R55 __ R52 Resistor Board Assembly Stock No 00608 613 Resistor Board Assembly Stock No 00608 60045 Figure 5 33 Circuit Board Parts IdentiIication Sbeet 1 of 2 5 38 ...

Page 69: ... Stock No 00608 625 Resistor Board Assembly Stock No 00608 614 CRa CRI i Rectifier Resistor Board Assembly Stock No 00608 604 CRIO _ CRt6 CRI7 t CRII __ CRI2 __ CRI4 1 CR J I Rectifier Board Assembly Stock No 00608 60046 CRI3 __ CRI8 CRI9 _ J CR20 __ R260 __ J R259 Figure 5 33 Circuit Board Parts Identification Sheet 2 of 2 5 39 ...

Page 70: ...Q2 Q3 RF OUT UT NORMAL AT J5 OSCILLATOR V6 CW POSITION CIRCUITS ICW POSITIONI ICW POSITIONI CIRCUIT YES lYES VOLTAGE NORMAL CHECK CHECK RF OUT lIT BUFFER AMPLIFIER V ll f CHECK ASSOCIATED AT T 12 TRANSISTDRQ4 MmRMI CIRCUIT NORMAL COMPONENTS AND ICW POSITION CIRCUIT CIRCUIT REPLACE AS NECESSARY jm IWER AM L1FIER CHECK ASSOCIATED V8 CIRCUIT NORMAL COMPONENTS AND REPLACE AS mCE SSARY 1m ATTENUATOR I ...

Page 71: ...SITIONI OJ BIASltJG AT TP13 01 AND ASSOCIATED CIRCUITRY CIRCUITRY pES PES VOlTAGE NORMAL CHECK TRANSISTORS VOl AGt CHECK AT Tp12 04 THROUGH Q7 NORMAL TRANSI STOR 08 AND ICW pOSlTlONI AND ASSOCIATtD AT TP14 0 1 AND ASSOCI ATED CIRCUITRY CI RCUI TRY m VOlTAGE CHECK CR7 AND NORMAL Flo ISHORHD 11 15 TO GROUNDI 01 STORTED OUTPUT 100 KHZ OSCILLATION All MODES EXCEPT PULSE 1 ALC DC VOLlAG S CHECK AT TP10...

Page 72: ...RESISTORS 0 C VOlTAGE JIl AttII R6 IN MOOULAT1Uoi L I o MUll YI MOO osc V2 OSCIUATOR V2 AT TI I CIRCUIT CIRCUIT CIRCUIT VOlTAGE REC TIFl RV2D l AHO MOD N T R MlC1RCUIT NO CRVSTAL CALIBRATOR OlfTF UT ISWlTot IN I Me POSITIONI 1 SIGNAL OUTPUT r L SIGNAL NORMAl SMCOSCIUATOR SWITCH IN SMC POSITIONl AT TPl Y9A CIRCUIT 1 YES 1 YES CHECK SIGNAL NORMAL r CH CK I Me OSCIUATtlR AMPL VIOA V B CIRCUIT AT TP4 ...

Page 73: ...t d The description of the part e A typical manufacturer of the part in a five digit code f The manufacturer s number for the part 6 6 OROERING INFORMATION 6 7 To order a part listed in the replaceable parts table quote the Hewlett Packard partnumber with the check digit indicate the quantity required and address the order to the nearest Hewlett Packard office The check digit will ensure accurate ...

Page 74: ...lip flop FH nat head FlL H fUlister head FM requency modulation FP ront panel FREQ frequency FXD fixed I lram GE lermanium GHr elphertr GL lass GRD I ound ed H henry b hour HET heterodyne HEX hexalona HD bead HDW hardware HF hilh frequency HG mercury HI hilh HP Hewlett Packal d HPF b1lh pass filter HR hour used In parte list hilh Itale Ho intelrated circuit lnaide diameter Intermediate frequency i...

Page 75: ...aceable RF radio frequency RFI radio frequency Interference RH round head riabt IaOO PPM part of polyslynne porcelain positive position s used in Parts list P05N posil ion POT potentiometer pop peak to peak PP peak to_pe r U5erl In Parts list pulse position modulation PREAMPL preamplifier PRF pulse repetition frequency pulse repetition option oscillator oxide ounce o m peak used In pans lid plliae...

Page 76: ...SJ8 1 1113 CMlloCHDI FII IUF 111 411 IC 28481 0 1 1I1J NSlt I IlT OF TT N lOBE 1l8 T OHO O CAPlloCITOR FDTHIU 5 5 101 5 Kleflll 7 82 134 01 4 5511 11100 1113 c cTTOI FXD 1 Iu u 28411i1O 0160 GlIJ un lin CA ACITOR FXD 80ur III 21X 45 IlC A U480 1180 0020 01 50 1112 C AClTO FID 0IU 201 11 IlC cr 51021 C023AIOaI1IJKSJ8 110 1021 CAf AClTOI FID 80UF 101 201 450 1K 28 180 0180 1 20 0151 OIU CA ACITOR FI...

Page 77: ...A 1PF 2 1PF 500VIlC 2BA80 0150 008 i MOOEL 6081 oNU CZ21 011 O 2H5 CAPACIToR fDTHRU tOOPF 20l lOOV CER 281180 011 0 22 i 5 MOIlEL I ISF ONLYl MOIlEL 0091 ONLY l C22B 0180 008 i CA ACIToR fXIl lDUHSO IOl 150VDC AL l1 209 JODI01OFISODD2 C22 i _ 01U 22JA CAf ACITO fXO 51 1 2SPf 500UOC CEO 201100 0160 2234 MODEL 1 101 oNLYlVALUE SELECTED IN TEST MODEL 1 0SF ONLY VALUE SELECTED TM TEST C230_ 01U 22J 5 ...

Page 78: ...EM Rf OUTPUT CO NECToR RI CEP r t I J r O l AXIAl TYPE HSR PART Of W1 CAP COAX 10 fIT f B C HON SHTG 2 S CH CoNNECToR Rf BNC rEM SGL HOLE fR 5Q O lM HODEL bQ8r ONLY FREIi caNnOL INPUY CO NECTOR Rf BMC FEM SSL HOLE FR D aHM l IO El bQSF ONLY fREIi A ALOG OUTPUT TURAET OSCIllATOII ASSEMBLY MODEL b08E O LY OSCILLAToA TURREI ASSEMBLY O El 608r O LY MsA PART OF OSC TURRET ASSEI1BlY MSA PART OF OSC TURR...

Page 79: ...TC 0 882 01121 E82741 0687 562t RESISTOR 5 I K 10 5101 CC TC_0 647 01121 EI56Z1 G690 1031 RESISTOR 10K 10 III CC TC 0 765 01121 CI1031 0687 1041 RESISTOR 100 10 SIl CC TC 0 88Z 01121 E91041 0690 1241 M SISTOR 120K 10 111 CC TC_0 88Z 011 Zl G812 1 0 10 IOSt RESISTOR III 11 III CC TC_0 1000 01121 G91O 51 0 1 0 1241 MESISTOR 120 lG III CC TC 0 S8Z 01121 G112 1 0693 2731 RESISTO 27K 10 2W CC TC 0 7I S...

Page 80: ...454 C I I TO I 2 F 1t201 0 281 IElI510P IC 1 11 C O III 2 54 C4 1 T 1101 F 1211 1757 14 5 I SI5TOI 1 01 IX 125 F TC_ __ I C IJ I TI lIU F 1219 2111 Z81 USI9TOll tlUII III 2U TIII DJ I TRN 28411 21 1211 1211 2 2J5 IElI8TOII 1UtoII COIfTIOL CC 5Il 2U LIN a 21 ZJ 1211 757 1417 IUI61D1l 132K 1 12511 le I I 9 111 ICF CI I T J32J F 12 2 2111 1 tll TOI 1 DU lL 5 2 X CC 5 K 2IX et 28411 2110 161 1213 7 RE...

Page 81: ...1261 06098 34 5 IE ISTOR 19 n 1 1_11 2848 1 8 3415 MODEl 0 111 ONl Yl 1268 07 i1 833 IESISTOI 5 IIK u TC I II 28481 17 57 1833 1IQ l 0 81 ONLll 126 2111 17 i1 RESISTOR VAll COHUOL ec 10K 1 n Ii LIN 2848 2101 115 IIDIIEL 10181 oreLll 11271 on7 14 5 RESISTOR 1 02 U 125W Tl __ 110 2454 0 C4 1 8 TI 1621 F 1211 1 7 i7 U38 IE81STOI 1911 I Te II 284U 757 1838 Il lOIlEL UBI oreLY 1212 8 0 02 IESI5TOI JI 5...

Page 82: ...08 6004t 5 00608 604 2 00608 61J 3 00b08 614 4 00608 601 9 00608 00024 9 00608 625 7 0 609 62 00608 1002 0 00608 622 001009 600 01lb06 6ZO 0370 002 1 bOBC 40A 00606 610 101 0B 60044 Ob06 6004 001008 600410 00606 00024 0609 1 25 00609 1 25 00100S 1o02 00608 622 Ob06 60041 00606 1 04 00608 b13 00b08 614 001009 1001 1200 028 1 10 000 bi60 44S 6090 44R 10090 IIoJ 6090 6R 00609 1006 00600 1 0 0060S 6 1...

Page 83: ...I 1171 lIn lNOIIND u FOlt asl Tlt OII D 2848 1371 112 UFIU fll 1I 1 OJ711 IUS KMOB SkItTD _ 81l FOII 2 lISHT 1 IIDD 21 1371 IUS aD SMITCMl 11370 1049 IlMOt slt n IU FO l 37 iSMT I llOll 28 11 1371 IFREQfJ lICl l ell 1311 01 RMO UCll ILl 3 D CIt SPINNER 28 1 171 11 10 61111 83CO 111 1 0 11I 11 tal 2848 ll C 612 3811 llRENCIt TUI 21 11 IZ 311A See introductIon to thIS section for ordering mformatl0n...

Page 84: ... L INC 11000T l11l VI lI 0 0 1 1U TELEDYNE INC CnlTlIl OIUCI CIIIlillIllG M 2 40 171541 PH 1110U51111 8 INC GauliN M IIBD 19111 I1UCO El ECTlIl COIl IlINE L WELL n 7 245 46 COINING ASS _ICe lBRotIOfOflO BIl DFDIID Uo101 249 12 TELEFUHK N COliI EMGl EWOQO 011 32 2 HEWLETT I ACK O CD CORPORaTE PIlLO ilLTO 4 Sl uln tIE CO TUllE DEPT OllENSBOIlO 423 1 3543 LECTIIDIIII INC CHICIilGO OGUG 5 PlAGUE ELECT...

Page 85: ...strations Figure 7 2 lists notes which apply to the schematic diagrams 7 3 Circuit board assemblies are shown in part on different pages To find a specific instrument component refer to the REFERENCE DESIGNA TIONS box which appears on each schematic dia gram 7 4 Component procurement information and spe cific component descriptions are included in Section VI Refer to page 6 1 for information on ho...

Page 86: ... rotation of control as viewed from shaft or knob Test point Number in circle matches TP number Encloses wire color code Code used MIL STD 681 is the same as the resistor color code First number identifies the base color sec ond number e Widr strip and the third number identifies the narrow strip E G 947 denotes white base yellow wide stripe violet narrow stripe Voltage regulator breakdown diode F...

Page 87: ...IS HSlt PART OF FL9 o CS7 ANO 69 ARE NSF PART Of ATt o l17 15 IlISIl p un Of 80l0 1 11 9 INO CUED VO A ES lt C PULSE SET AFOUTPUT MooE RF GENERATOR ASSEMBLY MODEL 60eE r 1 1 I T I c tuA T 1 FlJE IQ FREOUENCY jea I I MENT FA OCONTROL 0 OA IG D I I G l NG D WIT I I llZ l 6 WITMCI78r __ I I 11240 TO o s C68 I 10 L ell lS AM 59 RANGE AHI r6 Y2 o S CllA A Cf 301 I iOOv I I_I m AU9 0 Figure 7 3 Componen...

Page 88: ...32 RU3 t r l r J Ti 4 10K I l I l t f I RZ Z I 1 RArGn to l 1 B t L l l2 I I RA f I Dl3 I I RA t 1 2 l jLZ I RArGr 3t r I 1I I CI I f _ J L ZZSVIFI C3 1000 r 5600 r OSCILLATOR AMPLITUOE Fli I RZ71 9 09K o MODULATiON I 5 0 _ l kl 6 0 60 2 3 1 R o I 5 Z8 1 ill Z25v l iJ I Z Z I J R6 R9 C3 Ill I o 13K 130K O ZZUf 12K 0 i I rltO l l i j DETECTOR 116 U fU 1200 i 1 16 V I 111 e B IMODULATlON I t 163V 56...

Page 89: ... I 6 3 I l20 L 22 I I I 7 D n Ll4 I C 2 IR 6 Il I I I Rl HGEC I O e221 I e222 t I 4Cu Oi t I n el I I I 19 O1 L I C31 i O Il __ l13 I I I MIj 11 t J 1000 tl4NG 0 2_0_ OI 1 b III 6 3 t 11256 __ 11118 I C74 III I socor l 1000 J IOOO liANG E I I 1 1 IU22 l7 cl g L LI8 lIOV 6 S I 1 I I el6 1000 e21 10 20 J cn r _ __ J 2 Y L J 00 T 47 t C77 T t 0 CZ4 I 1 12 5 I 20 2 2 4000 6 IC28 I t 1 l0 OOO_63 5MCOS ...

Page 90: ...SIGNATIONS C2 6 1 11 19 26 28 33 37 38 39 60 61 M 14 200 213 218 227 ell 1 2 T ZI U 2 l 26 1 53 fU 1l 2 3 8 ll T U ZO Z2 OZ 9 III 11 14 43 1 49 n lo 114 118 lit At2Z IU 200 n 233 240 2 Zit 10 54 6 7 o Qf y I n HlWUTT NoCUIIO co 0000l_ _ t 16 V I 1 RZ C21D J 12 II O lUF l 11228 4l 11 nv I I 11213 11220 R2Z _ _ _ u oc I J b 0 112 Lnn 6 62 t _ i3 0 l CD l Z I 57 151 I 1 F 10 ISIl oJ Figure 7 4 RF Gen...

Page 91: ...6 7 611 l OMPARISON z __ AMPLIFIER 42 I 1114 I5AU6_ 611 IOUJ 1 1 6 I 2 CD 7IV IIU 7 nv r7 331 I REFERENCE TUBE C III 0 lFt i f CD 37 1 24 9 1 12 JI CI l30I r 1 SERIES To 1 i7 30 REGULATOR l d f x 0 __ on 1154 0090 UI liZ H 25 5 1 6190 IOU 10 I I Z9 i 4 l _ 1 l CD I H A A AMPLIFIER u I F _c yOIO I 4 r t f i I D IR E F E R E N C E 1 ll lll J DIODE I __ lo _ CAZI ...

Page 92: ...Q M 165 VOLTS 1119 OJ 2201 CR27 SERIES REGULATOR 1I 1O 0087 ell _ IOUF _14 11 m IInl 6 90 r REFERENCE TUBE 5651 2 7 16511 FERENCE DIODE CIUI li MODULATORS ALe BOARD ________ PART 2Of l _ 112 6 1 AMPLIFIER OIO 18 OY 21 127 1 I I 18 4 I LAMP L t 1 lf 2 iJ J iJ J L _ _ l _ _ f 1 SERIES 11272 t EGULATOR 000 V 03 1 __ 1126010 6 57 I I r t 1r r L CD IIIIS 1116 560 1M 1 34 1 e Rn 37 1 0 01 lUI HI t UF 22...

Page 93: ...v YC35 I I CD I 6 D OIUf j t I 05V _ _ _ __C 7 _ I 0 DIU A 8 1AMPle XlAL CAL lOOK VIDA GIUN Ifl12A1 1 12AT7 CD 0 b fROM Rf DEtECTOR AT fL 1_ CALIBRATORAMPLIFIER Nons o lIzn SEl CTED IN TEST HOIIIIIHAL II U SHOW Z INDlU TEO VOlTAGES cwo MOOE REfERENCE OESIG TIONS C34 36 39 40 6 9 53 55 18 tn n 76 214 2 118 20 21 053 FI 3 01 10 11 A50 56 5 11 N 101 Ie RIZ4 1 In 236 239 KO Z1Z fl 2 3 Y2 10 14 16 111 ...

Page 94: ...through M CHANGE A CHANGE B CHANGE C Figure 7 5 and Parts List Add in series with emitter of Ql R128 UP Stock No 0812 0033 Fixed v W 7 ohm 3 5W CR20 change HP Stock No to 1902 0037 Parts List Change Q7 to HP Stock No 1850 0103 2N2190 under Q7 change HP Stock No 1205 0011 to read 1205 0012 Change included in instruments 710 00500 and below Recommended change for all older models Delete under R237 d...

Page 95: ...80 MHz combined rise and decay time less than 2 usee Paragraph 5 27 step h Change test limit for Combined pulse rise and decay times to read 2 JJ sec max CHANGE F Figure 7 5 and Parts List Change Resistor R237 typical value from 10 5K HP Stock No 0698 4477 to 11K HP Stock No 0757 0443 Delete the asterisk indicating typical value given CHANGE G Figure 7 4 and Parts List Change MOD OSCILLATOR resist...

Page 96: ...s List Change Resistor R7 from lK UP Part No 2100 0036 to 2K UP Part No 2100 0010 Change Resistor R8 from 1 2K UP Part No 0690 1221 to 680 ohms UP Part No 0690 6811 Figure 7 4 and Parts List Delete Ferrite Bead RFC1 HP Part No 9170 0029 Parts List Change Diode CRI from UP Part No 1901 0518 to UP Part No 1901 0011 Figure 7 5 and Parts List Change Capacitor C216 from 50 WVDC UP Part No 0180 1819 to ...

Page 97: ...bove 00200 o through N 832 above 01151 L M N 710 E through N 832 above 01251 MN 742 F through N 832 above 01501 N 742 above 00850 G through N 824 B through N CHANGE A CHANGE B Figure 7 5 and Parts List Delete Resistor RU9 1 ohm HP Stock No 0813 0029 Figure 7 5 and Parts List Change Tl from HP stock No 9100 2289 to 9100 0047 Change schematic to show filament wiring of Tl as follows C 1 0 4 9 f0 V20...

Page 98: ...y counter Paragraph 5 22 step b instrument serials below 710 00550 Change to read Power meter should indicate 1 8 dBm minimum Table 1 1 Change second sentence of External Pulse Modulation specification to read Above 220 MHz combined rise and decay time less than 2 sec Paragraph 5 27 step h Change test limit for Combined pulse rise and decay times to r ead 2 jJ sec max Figure 7 5 and Parts List Cha...

Page 99: ...No 2100 0036 to 21 UP Stock No 2100 0010 Change Resistor R8 from 1 2K UP Stock No 0690 1221 to 680 ohms HP Stock No 0690 6811 Figure 7 4 and Parts List Delete Ferrite Bead RFCl UP Stock No 9170 0029 Parts List Change Diode CRI from UP Stock No 1901 0518 to HP Stock No 1910 0011 Figure 7 5 and Parts List Change Capacitor C216 from 50 WVDC UP Stock No 0180 1819 to 100 MF 40V HP stock No 0180 0138 Fi...

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HP 608E, Operating And Service Manual

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