v 1.5.1 - ENS de Lyon
Contents
1. 50 Hz Lis 68 mA 10 bi 15 TABLE Switch 871 Frequency dial to to position 1 2 2 5 4 7 9 10 Dene 18 7 23 6 38 1 67 2 86 6 96 3 11 Hz 21 3 Hz 26 4 Hz 41 3 Hz 72 8 Hz 93 4 Hz 103 7 Hz x10 Hz s 3 90 9 ST ess 37 9 23 8 13 74 10 71 9 64 111 ms 53 5 ms 42 31 ms 26 25 ms 14 9 ms 11 55 ms 10 38 ms 97 194 242 b 388 619 873 970 103 Hz 206 Hz 257 5 Hz 412 Hz 721 Hz 927 Hz 1030 Hz 100 Hz amp EI 9 71 4 854 3 883 2 421 1 387 1 0789 0 971 10 31 ms 6 156 ms 4 124 ms 2 577 ms 1 473 ms 1 145 ms 1 031 ms X1 KH 0 97 1 94 2 425 3 88 6 79 8 73 9 7 1 03 kHz 2 06 kHz 2 575 kHz 4 12 kHz 7 21 kHz 9 27 kHz 10 3 kHz en 9 7 19 4 24 25 38 8 67 9 87 3 97 x 10 3 kHz 20 6 kHz 25 75 kHz 41 2 kHz 72 1 kHz 92 7 kHz 103 kHz 3 4 4 Output voltage of the oscillator Push button 871 to v and x 100 Hz Set the frequency dial to 10 Turn potentiometer AMPLITUDE 614 fully anti clockwise Check the oscillator voltage at contact 7 UNIT A with a high ohmie a c voltmeter gt 1 9 nominal value 2 20 mV if necessary adjust with potentiometer 610 UNIT A Set push button 871 to and x 1 kHz Set the frequency dial to 2 Check the duty cycle of the square wave voltage positive pulse duration with respect to the period durati2. douille BNC Zo 10 9 807 En mode un limiteur d amplitude est connect entre L osciliateur et le potentiom tre AMPLITUDE L alimentation produit des tensions continues stabilis es 2 Mode d emploi 2 1 INSTALLATION 2 1 1 2 1 2 2 1 3 Position L appareil peut tre utilis dans toutes les positions Il peut galement tre plac sur l trier support Adaptation la tension secteur locale L appareil sort de l usine r gl sur 220 V alternatif Avant de brancher l appareil sur 115 V inter changer les connexions du primaire du transformateur secteur D poser 1 plaque sup rieure voir chapitre 3 2 1 Interchanger les connexions du transformateur en cons quence selon la figure 4 Modifier l indication l arri re de l appareil de sorte indiquer la tension secteur locale Poser nouveau la plaque sup rieure Mise 4 la terre L appareil doit tre mis la terre selon les r gles de s curit locale Le cable secteur compris la livraison pr sente un fil de terre lequel est connect au contact de terre de la fiche Si l appareil est connect la douille secteur avec ergots de terre le boitier est automatiquement mis Ja terre La borne L 805 est reli e int rieurement au ch ssis cette borne ne peut en aucun cas tre utilis e comme point de raccordement pour une s curit de terre Le contact ext rieur du connecteur BNC LOW Zo est connect la terre de l
3. PHILIPS PHILIPS e pr P 45 1 INSTRUCTION MANUAL ANLEITUNG HANDLEIDING NOTICE D EMPLOI ET D ENTRETIEN L F GENERATOR N F GENERATOR PM 5106 L F GENERATOR 9452 051 06 1 GENERATEUR DE B F 9499 450 06978 751101 2 04 05 28 1 G n ralit s 1 1 INTRODUCTION Le g n rateur de basse fr quence PM 5106 fournit des signaux sinusofdaux et rectangulaires dans la gamme de fr quence de 10 Hz 100 kHz La tension de sortie est continuellement r gl e de plus une att nuation de 40 dB est possible l aide d un interrupteur tirette Cet appareil du fait de son fonctionnement simple est tr s utile des fins d tude et d entretien 1 2 CARACTERISTIQUES TE CHNIQUES Seules les valeurs exprim es en valeurs num riques et avec tol rance sont garanties condition cependant qu un temps de chauffage de 30 minutes ait t observ Les fautes relatives sont donn es en pourcents des valeurs r gl es moins qu indiqu es diff remment Modes Fr quence Gammes Limite d erreur Coefficient de temp rature D rive long terme mesur e pendant 7 heures apr s une dur e de chauffage de 30 minutes Mode sinusoldal Tension de circuit ouvert Att nuation R ponse de fr quence fr quence de r f rence 1 kHz D viation de tension secteur Variation de 14 tension de sortie due la temp rature Facteur de distorsion Composante continue Rappor
4. appareil 32 2 2 3 Commande de tension de sortie La tension de sortie peut tre continuellement command e avec le potentiom tre AMPLITUDE De une att nuation de 40 dB est possible avec un interrupteur tirette 88 0 01 x1 814 2 3 SERVICE Avant de proc der au remplacement des composants d clencher l appareil Apr s remplacement 11 peut s av rer n cessaire de rajuster l appareil voir chapitre 3 4 CONTROLES ET REGLAGES Pour l acc s aux composants voir paragraphe 3 2 38 i SPECIFICATION Vout 5V on 500 DISTORTION 0 10 100 1000 10 000 100 000 FREQUENCY H2 MA7892 Fig 1 10 VLoAD V SPECIFICATION LIMIT OVERLOAD LIMIT sea en N jt E 100 200 300 gt Roan 0 o o L d MA7893 Fig 2 om Somme CONTENTS 1 1 1 2 1 3 1 4 2 1 2 1 1 2 1 2 2 1 3 2 1 4 2 2 2 2 1 2 2 2 2 2 3 2 3 3 3 1 3 1 1 3 1 2 3 1 3 3 2 3 2 1 3 2 2 3 2 3 3 2 4 3 3 3 4 3 4 1 3 4 2 3 4 3 3 4 4 3 4 5 3 4 5 1 3 4 5 2 3 4 6 3 8 4 5 4 3 4 5 5 3 4 5 6 3 4 5 7 3 5 3 6 3 6 1 3 6 2 3 6 3 GENERAL INFORMATION Introduction Technical data Accessories Deseription of the block diagram DIRECTION FOR USE Installation Position A
5. consequence undesired external interferences at the signal earth socket 806 cannot influence the function of the instrument 11 2 3 SERVICE Switch off the instrument before you start replacing parts After replacing parts it might be necessary E to readjust the instrument according to paragraph 3 4 CHECKING AND ADJUSTING 7 For accessibility of the individual parts see paragraph 3 2 4 Note In case of breakdowns the assistance of the PHILIPS Service organisation can always be called E upon Whenever the instrument is to be forwarded to a PHILIPS Service Center for repair the following should be observed 2 Provide the instrument with a label bearing full name and address of the sender Indicate as completely as possible the symptoms of the fault di Carefully pack the instrument in the original packing or if this is no longer available ina iz wooden crate Forward the instrument to the address provided by your local PHILIPS representative T E 3 Service data uc 3 1 CIRCUIT DESCRIPTION J 3 1 1 Oscillator Figs 7 and 18 The 1 f generator comprises an RC oscillator The sine wave voltage produced by the RC oscillator is 7 applied to the output voltage divider either directly or via a clipper In the latter cage a square wave signal with a mark space ratio of 1 1 will be available on socket LOW Z 0 E The oscillator consists of a frequency determining Wien four pole with equal branches and a stabilized i ampli
6. de commande Fonctionnement Enclenchement R glage de mode et de fr quence Commande de tension de sortie Service 28 28 28 30 30 30 30 30 30 30 31 31 31 31 32 32 M tog C3 US L j ws it i i 1 1 General information 1 1 INTRODUCTION The LF generator PM 5106 supplies sine and square wave signals in the frequency range 10 Hz to 100 kHz The output voltage can be adjusted continuously additional a 40 dB attenuation may be set by means of a pull switch This instrument is owing to its simple operation very suitable for instruction and service purposes 1 2 TECHNICAL DATA Properties expressed in numerical values with statement of tolerances are guaranteed provided the instrument has been warmed up during 30 minutes If not indicated differently the relative faults are given in percents of the adjusted values Operating modes Frequency Range Setting error limits Temperature coefficient Long term drift measured during 7 hours after a warming up period of 30 minutes Mode SINE WAVE Open circuit voltage Attenuation Frequency response referred to 1 kHz Mains voltage dependence Temperature coefficient output voltage Distortion factor d c offset voltage Signal to noise ratio Mode SQUARE WAVE Open cirocuit voltage Attenuation Frequency response referred to 1 kHz Sine and square wave 10 Hz 100 kHz in four overlapping subrange
7. djusting to the local mains voltage Earthing Table of connectors and control elements Operation Switching on Setting mode and frequency Output voltage control Service SERVICE DATA Circuit description Oscillator Output amplifier Power supply Gaining access to the parts Removing the top plate Removing the side plates Removing the bottom plate Removing the tilting bracket Survey of adjusting elements and auxiliary equipment Checking and adjusting Current consumption Supply voltages Frequency of the output voltage Output voltage of the oscillator Output voltage Ripple and overshoot Amplitude of the sine wave voltage Frequency response Distortion factor Rise and fall time Droop Stability for capacitive load Hints for fault finding List of parts Mechanical parts Electrical parts Miscellaneous o 0 oe 10 10 10 10 10 11 1L 11 11 12 12 12 12 12 12 12 18 18 18 14 14 16 15 15 16 16 16 16 17 17 33 33 34 37 t 1 i i C LO La jeu eed ae ol ee tr ES Le fe TABLE DES MATIERES 1 1 4 1 2 1 3 1 4 2 1 2 1 1 2 1 2 2 1 3 2 1 4 2 2 2 2 1 2 2 2 2 2 3 2 3 GENERALITES Introduction Caract ristiques techniques Accessoires Description du sch ma synoptique MODE D EMPLOI Installation Position Adaptation la tension secteur locale Mise la terre Table des connecteurs et l ments
8. fier free from phase shift The resonant frequency of the Wien four pole can be calculated from the following formula 1 37 RO At this frequency the input and output voltage of the Wien four pole are phase The amplitude of the output voltage is three times smaller than that of the input voltage This means that in order to comply with the oscillation condition the phase shift of the amplifier should be 0 and its gain factor should be 3 The frequency range in steps of one decade are obtained by selecting with push button unit 871 different capacitors from the range 501 up to 513 A tandem potentiometer 601 is used for fine control of the frequency within the selected range Potentiometer 605 and the capacitors 516 and 513 serve for calibration The amplifier has a high degree of negative feedback so that its gain is reduced to a factor 3 The gain factor can be adjusted by means of potentiometer 610 The resistance setting of this potentio meter is the shunt resistance in the feedback circuit resistor 607 provides the series resistance as a result of this the feedback will depend on the amplitude If for exemple the output voltage of the amplifier increases the current through the feedback network 607 514 in series with the resistance setting of 610 also changes The increased feedback current causes a temperature rise of the N T C m resistor so that its ohmic value will be reduced Consequent
9. ge Resistor 602 10V 35 0 1V 4 Digital voltmeter PM 2421 16 d c part Capacitor 506 UNIT B 10 mV Multimeter PM 2403 16 frequency response sine wave 1 5 Digital voltmeter PM 2421 frequency response square wave 4 6 Oscilloscope PM 3231 Distortion factor lt 0 4 Sat 1 kHz Distortion meter Hp 331A lt 0 8 Hat 10 Hz and 100 kHz Rise and fall time Trimmer 602 UNIT B lt 0 25 Oscilioscope PM 3231 3 4 5 67 13 Droop 0 8 Oscilloscope PM 3231 3 4 5 6 Stability Waveform Osoilloscope PM 3231 3 4 6 7 3 4 CHECKING AND ADJUSTING 3 4 1 Tolerances given in this chapter apply in case of newly adjusted instruments and may differ from those given in chapter 1 2 TECHNICAL DATA The adjusting elements their location and funetion are mentioned in chapter 3 3 The instrument may only be adjusted after a warming up period of at least 1 hour at an ambient temperature of 25 3 c If not duly indicated the voltage levels refer to signal earth the rms voltages represent the a c voltages The signal earth socket 806 must be connected with cabinet socket L 805 by means of the shorting plug Current consumption Connect the instrument to the mains via an ammeter Switch on the instrument the indicator lamp in push button POWER 812 must light Set push button 871 to position and 1 kHz Set the frequency dial to 1 Measure the current consumption nominal value at 220 V mains
10. ly the feedback voltage increases so that the output voltage will be reduced Capacitor 514 serves for phase compensation and with potentiometer 610 the feedback is adjusted to such a degree that the oscillator starts when the instrument is switched on 3 3 SURVEY OF ADJUSTING ELEMENTS AND AUXILIARY EQUIPMENT 13 Adjustment Adjusting element Measuring value Measuring instrument Example Chapter Fig Current consumption Lime 68 H0 Ammeter PM 2403 3 4 1 Supply voltages Resistor 620 UNIT C 20 V 4 Digital voltmeter PM2410 8 4 2 17 Resistor 609 UNIT C 00 Ripple lt 5 V Oscilloscope PM 3231 3 4 2 d c voltage for oscillator 16 3 V 42 5 Digital voltmeter PM 2421 3 4 2 Frequency of output voltage Potentiometer 605 UNIT A 10 Hz 310 14 Trimmer 613 UNIT A Trimmer 516 UNIT A 100Hz 100 kHz 2 6 Counter PM 6620 3 4 8 14 Wavetorm 3231 3 4 3 Oscillator output voltage Amplitude of sine wave voltage Potentiometer 610 UNIT A 2 V 1 Digital voltmeter PM 2441 3 4 4 14 14 Duty cycle of square wave Potentiometer 621 UNIT A 0 5 5 Oscilloscope PM 3231 3 4 4 14 voltage Capacitor 623 UNIT A Amplitude of square wave 5 voltage 4V pp 4 Oscilloscope PM 3231 Output voltage Ripple Resistor 605 UNIT B 2 5 5 3231 16 Overshoot Trimmer 502 UNIT lt 2 5 Osoilloscope PM 3231 13 Amplitude of sine wave volta
11. on at contact 7 UNIT A nominal value 0 475 0 525 if necessary adjust with potentiometer 621 UNIT A Set push button 871 to position and x 10 kHz Set frequency dial to 10 Check the duty cycle nominal value 0 475 0 525 if necessary adjust with potentiometer 621 UNIT A Set push button 871 to position and x 1 kHz Set the frequency dial to 2 Check the duty cycle nominal value 0 475 0 525 if necessary change the value of capacitor 523 UNIT A and repeat the whole procedure of the duty cycle Check the amplitude of the square wave voltage at contact 7 UNIT A nominal value Yop 4V permissible tolerance 200 mV 400 mV 3 4 5 Output voltage Set push button 871 to x 10 kHz Set the frequency dial to 10 Set control AMPLITUDE 614 to MAX Check the ripple of the droop at output 29 10 807 permissible value lt 2 5 if necessary change the value of resistor 605 UNIT B Check the preshoot at output Zo 10 2 permissible value 2 5 if necessary adjust with trimmer 502 UNIT B
12. rument may be used in any position The instrument can be used in sloping position after the tilting bracket at the bottom has been hinged out Adjusting to the local mains voltage The instrument has been adjusted by the factory to a mains voltage of 220 V a c Before connecting the instrument to 115 V the connections at the primary side of the mains transformer must be interchanged Remove the top plate see chapter 3 2 1 Resolder the tappings on the transformer in accordance with the conection diagram for the various voltages see Fig 4 Change the indication plate at the rear to match the relevant mains voltage Fit the top plate Earthing The instrument must be earthed in conformity with the local safety regulations The supplied mains cable contains an earth core which is connected to the earth contact of the plug If the instrument 18 connected to a mains socket with earth contacts the cabinet is automatically earthed L Socket 805 is internally connected to the cabinet this socket should on no account be used as a connection point for a protective earth lead The outer contact of the BNC socket LOW Zo is connected to the signal earth of the instrument The circuit earth is connected direct to the signal earth socket 806 and moreover to the earthed cabinet via 100 nF capacitor 501 The signal earth socket 806 is connected to cabinet socket L 805 by means of a shorting plug horizontal position As a
13. s 35 Hz 5 10 4 0 in range 5 45 C 0 1 from 10 Hz up to 1 kHz lt 0 15 from 1 kHz up to 100 kHz 0 10 0 60 continuously 0 and 40 dB additional with pull switch in amplitude control 32 lt 1 lt 3 1078 0 negative lt 1 see Fig 1 50 mV at 10 kHz lt 1 mV typical gt 60 dB 0 20V 0 60 dB continuously 0 and 40 dB additional with pull switch on amplitude control 40 5 ey 1 4 DESCRIPTION OF THE BLOCK DIAGRAM Fig 3 The frequency determining unit of the generator is the WIEN BRIDGE in the feedback circuit of the AMPLIFIER This oscillator generates a sine wave voltage with little distortion and stable frequency and amplitude The frequency from 10 Hz to 100 kHz can be selected in four decimal steps with push button unit 871 In each range the frequency is continuously variable by means of dial 601 Changing over from sine wave to square wave signal is effected with push button m uH li of push button unit 871 In the 7 mode the output signal of the oscillator is applied via control AMPLITUDE 614 to the output amplifier which amplifies this signal to the required value and carries ft to BNC socket Zo 10 9 807 In the mode a clipper is connected between oscillator and AMPLITUDE control The power supply provides stabilized d c voltages 2 Directions for use 2 1 INSTALLATION 2 1 1 2 1 2 2 1 3 Position The inst
14. t signal bruit sinusoidal et rectangulaire 10 Hz 100 kHz dans 4 gammes se chevauchant 45 1 Hz 5 10 4 0 dans la gamme 5 345 C 0 1 de 10 Hz 1 KHz 0 15 de 1 kHz 100 kHz 0 10 Voff 0 60 dB continuellement r glable 0 et 40 dB suppl mentaire avec interrupteurs tirette 32 06 1 lt 1 3 10 2 C n gatif lt 1 voir Fig 1 lt 50 mV 10 kHz lt 1 mV typique gt 60 dB 30 1 3 ACCESSOIRES i C ble secteur 1 Notice d emploi et d entretien 1 Fusible 0 315 action diff r e pour 115 V 1 Label de fusible 1 4 DESCRIPTION DU SCHEMA SYNOPTIQUE Fig 3 La fr quence du g n rateur est d termin e par le pont de Wien mont dans le circuit de contrer action de l amplificateur Cet oscillateur produit une tension sinusoidale faible distorsion et une amplitude et une fr quence stables La fr quence de 10 Hz 100 kHz peut tre s lectionn e en quatre chelons d cimaux avec le bouton poussoir 871 Dans chaque gamme la fr quence est continuellement variable l aide de l chelle 601 La conversion d un signal s nusoldal en signal rectangulaire se fait avec le bouton poussoir 7 do l unit 871 En mode v le signal de sortie de l oscillateur est appliqu par l interm diaire du potentiom tre continu AMPLITUDE 614 l amplificateur de sortie lequel amplifie ce signal comme requis et le conduit la
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