Philips PM5324 Instruction Manual
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Philips PM5324 Instruction Manual

Philips PM5324 Instruction Manual

Hf generator 100khz-110mhz
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Generator
HF
100kHz-110MHz
PM5324
9452 053 240.1
9499 450 05511
730801/1/01

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Summary of Contents for Philips PM5324

  • Page 1 Generator 100kHz-110MHz PM5324 9452 053 240.1 9499 450 05511 730801/1/01...

  • Page 4: Table Of Contents

    Contents GENERAL 1.1. INTRODUCTION 1.2. TECHNICAL H F-Generator 1.2.1. Mod u lation 1.2.2. 1.2.3. Calibration 1.2.4. Supply Tempe ratu re range 1.2.5. 1.2.6. Mechanical data 1.3. ACC ESSO R I ES 1.3.1. ncl uded as standard 1.3.2. Opt ional 1.4. DESCRIPTION OF THE BLOCK D IAGRAM D IRECTIONS FOR USE 2.1.
  • Page 5 3.2. GAINING ACCESS TO AND REPLACING OF PARTS 3.2.1. Cabinet pane ls 3.2.2. Scale lamp, illumination of indicator 3.2.3. Tuning capacitor 3.2.4. Unit 1, push-buttons, unit 3 3.2.5. Tuning F R EQU ENCY, drive, scale and ind icator 3.3. MAINTENANCE SURVEY OF CHECKING AND ADJUSTING POINTS 3.5.
  • Page 6 FIGURES 1. Zero beat indication 2. Block diagram 3. Adaptat ion mains transformer 4. Front view 5. Rear view 6. Block diagram of the static measuring method 7. Block diagram of the dynamic measuring method 8. Dummy aerial 9. Con nectio n of the indicator to an output w ith a low output impedance 10.

  • Page 7: General

    1. GENERAL 1.1. Introduction A M-FM-Generator PM 5324 produces unmodulated and modulated HF-S ignals. It is very useful in radio-se rv icing and in technical education. The frequency range is f rom 0.1 MHz to 110 MHz in 9 sub- ranges. F ine adjustment of the frequency is effected on a large, illuminated, easy-to-read l inear scale.

  • Page 9: Mod U Lation

    : via BNC connector L F IN Input AM, external : > 70% Modu l at ion depth : 0.2 V/l0 % A M Modul ation coeffic ient 2 0 H z 2 0 kHz 3 dB· Band width : 10 kQ Input impedance Modulation frequency: 1 kHz (sine wave) F M, interna l...

  • Page 10: Temperature Range

    1.2.5. TEMPERATURE RANGE Reference tempe rat u re +250C Tempe rat u re tole rance range +5 0c ... +40 °c Storage tempe ratu re -40 °c ... +70 °c 1.2.6. MECHANICAL DATA Dimensions Height 192 mm Width : 287 mm Depth 290 mm Weight...

  • Page 11: Description Of The Block Diagram

    1.4. Description of the block diagram The frequency of the generator is determined by an HF-oscil l ator the ampl i tude of wh ich is e l ectronica l ly sta b i l ised. Frequency ranges are selected with push-bu tton MHz. W i th in the sel ected range the frequency can be adjusted continuously by control FREQUENCY.

  • Page 12: Zero Beat Indication

    f CAL . > MA8204 Fig. 1. Zero beat indication . -.-: -"-"- -" r--;----t----I-------, r-------------, NO CATOR D ISPLAY UNIT CALIBRATION FOR THE OSCILLATOR LIMITER DE CI M A L APPLIED R ECTIFIER D IV IDER SCALE A M PLITUDE - FREQUENCY M ODULATOR HF - OUTPUT...

  • Page 13: Directions For Use

    2. DIRECTIONS FOR USE 2 .1. Installation 2.1.1. POSITION The i nstrument may be used in any position except on its rear end. Make sure that the i nstrument is not exposed to excessive heat. 2. 1.2. CONNECTION TO THE MAINS The instrument must have a.c.

  • Page 14: Operation

    2.2. Operation 2.2.1. SWITCHING ON - Connect the instrument to a mains socket with earthing contacts. - Switch on by means of switch P OW E R; the sca le illumination lights up and a wh ite field in the button·cap shows t h at the ma ins switch is on.

  • Page 15: Front View

    Fig. 4. Front view Fig. 5. Rear view...
  • Page 16 2.2.4.2. Amplitude·modulated (AM) H · al generator Internal Pre liminary adjustment according to chap. 2.2.4. 1 . . - Press button AM/ 1 k H z. The HF-sign a l is modu lated in amp litude by 30 % at an internal frequency of 1 k H z. For indications on checking and adjusting, see the ind ividua l check ing and adjusting procedures for the...
  • Page 17 - Set the band-pass curve at the middle of the picture with potentiometer FREQUENCY. - Adjust the height of the band-pass curve with potentiometer HF AMPL ITUDE. - Adjust the width of the ba nd-pass curve with potentiometer SWEEP W IDTH. Check the band-pass curve;...

  • Page 18: Application Examples

    2.3. Application examples 2.3.1. INTRODUCTION Usual l y the band·pass curve of a certain test object is measured statical l y i.e. point point. lodi'",", Fig. 6. Block diagram of the s tatic measuring method The static method gives very reliable results but is much too time-absorbi ng. As most l y only the shape must be determined and not the absolute v a lues of the band-pass curve, the so-cal l ed dynamic method (wobbling)

  • Page 19: Static Measuring Method

    2.3.2.3. Warming-up time To ensure a good frequency accuracy and stability it is recommended to switch on the generator h a lf an h our before adjustm�nt is started. 2.3.2.4. Switching-off the AG C voltage To prevent incorrect measur ing results it is necessary to switch off the AGC*·voltage of the receiver; it shou l d b e replaced by fixed adjusted voltage.

  • Page 20: Static Adjustment Of An A.m. Receiver

    2.3.3. 1 . Checking and adjusting the band·pass curve of a.m. receivers RF OUT MA8211 Fig. 1 1. Static adjustmen t of an AM receiver 2.3.3. 1 . 1 . I.F. band-pass filters - Connect the h.f. output of the P M 5324 to the connection point i ndicated in the trimming table of the receiver via a 30 nF capacitor.

  • Page 21: Checking And Adjusting The Band-Pass Curve Of The Ratio Detector Of An F.m. Receiver

    2.3.3.2. Checking and adjusting the band-pass curve of f.m. receivers Indtcator 24031 (e.g. PM 3 V '" MA8209 (R'=R�) Fig. 12. Checking and adjusting the band-pass cur ve of the ratio detector of an f.m. recei ver Indicator 2403) (e.g. 3V", MA9210 Fig.

  • Page 22: Alternate L Y Damping And Adjusting The Primary And Secondary Circuits

    INDICATOR (eg PM 2.03) � MA 8296 Fig. 14. Al ternately damping and adjusting the primary and secondary circuits 2. 3.3.2.2. R F and oscillator circuits - Connect the indicator according to F ig, 14 - Connect the h.f. generator to the f.m. aerial input via impedance transformer PM 953 7 - Set the volume contro l o f the receiver to minimum - Set the receiver to f.m.

  • Page 23: Dynamic Measuring Method

    2.3.3.3.2. Preparations - Con nect the TV set to the m a i ns via a separating transformer - Con nect the chassis of the TV set to a proper earth - Setti n gs of h.f. generator PM 5324 •...

  • Page 24: Dynamic Adjustment Of An F.m. Receiver

    2.3.4.2. Checking and adjusting the band·pass curve of f.m. receiver ( F ig. 2.3.4.2. 1 . Connection of the measuring instruments O.l·Mn - Connect the i ndicator to resistor R3 of the demod u l ator via a resistor O.l-Mn - Connect the Y·input of the osc i l l oscope to resistor R3 via a resistor - Connect the X-i nput of the osci l loscope with connector 1 kH z/SWEEP OUT of the P...

  • Page 25: Discrimi Nator Curve

    2.3.4.2.2. IF band· pass filter - Connect the h . f.·generator to the connection point g iven in the documentation of the receiver. The earth connection of the h . f.·cable must be con nected as short as possib l e to the point to wh ich the signa l is supp l ied . - Set the volume contro l of the receiver to m i nim u m .

  • Page 26: Frequency Marks

    2.3.5. FREQUENCY MARKS Marks, wh ich i nd icate a certa i n frequency on the band-pass curve, often are i m portant. T h i s can be met if additional equ i pment i s ava i lable. F ig.

  • Page 27: Service Data

    DATA SERVICE 3.1. C i rc u it desc ription 3. 1.1. HF·OSCILLATOR ( F ig. 25) The frequency of the h.f.-oscil l ator is determi ned by the resonant ci rcu it, wh ich can be switched separatel y to the col l ector c i rcuit of transistor 30 1 .

  • Page 28: Amplitude Modulator

    ( F ig. 26) 3. 1 .2. AMPLITUDE MOD UL ATOR The output signal of the h.f. osc i l l ator is appl ied to the base of transistor 308 via separating ampl ifier 303/304 ( Fig. 25). Moreover, v i a stage 307 two components of the modu l ation voltage are suppl ied to m od u lation stage 308.

  • Page 29: Khz Oscillator

    The modu lation signal i s adapted to resistor-diode network 664 u p to 669, 413 and 414 by em i tter fol lowers 3 1 4 and 3 1 5. The network serves to give a pre·d i storsion of the control voltage of the capacitance d iodes to l i nearise their curve .so that the frequency change of the h.f.

  • Page 30: C Rystal Oscillator

    3. 1 . 6. 1 . 1 . C rystal oscillator ( F ig. 27) The active el ements o f the oscillator are N a nd-gates N3 and N 4 included in integrated circ u i t 3 2 1 . V ia resistor 644 both gates N3 and N4 function as analogue i nverters wh ich are positively fedback via quartz-crystal 752 a nd adjustab l e load capacitance 542//543.

  • Page 31: Range Indication

    Due to the curved characteristic of m ix i ng d iode 409 l ow-frequent difference signals appear as so'on as the frequency of the h.f. osc i l l ator approximates to one of the frequenc ies of the ca l ib ration oscil lator o r its harmonics.

  • Page 32: Gaining Access To And Replacing Of Parts

    3.2. G a i n i n g a c c e s s to a n d replac i n g of pa rts 3.2. 1 . CABI N E T PAN E LS The top- and bottom plates can be taken off by sl id i ng them backwards after f i rst h av i ng the corresponding screws ( M3) removed.

  • Page 33: Maintenance

    - Take out the front plate together with the text plate; for th is the side panels must be pushed s l ightly sidewards If necessary, i nd icator can be demou nted ; i f only the ind icator m u st demou nted, actions m arked with + a re not necessary.

  • Page 34: Survey Of Checking And Adjusting Points

    3.4. S u rvey of c h e c k i n g a n d a d j u s t i n g p o i nts M easu r i ng e . g . Ch apter Adjusting F ig .

  • Page 35: Checking And Adjusting

    3.5. Chec ki n g a n d a d j u s t i n g 3.5. 1 . SUPPLY - Connect the generator to a m a i ns voltage of 220 V - Measure the current consum pt i o n : 58 m A r.m.s. u p to 70 m A r.m .s. - Measure the voltage between conn ections 1 3 and 6 of u ni t 2: - 1 2 V ±...

  • Page 36: Amplitude Modulator, Compensation Of The Modulation Voltage

    3.5.5. AMP L I TU D E MODU LATO R , COMP E NSAT I O N O F TH E M O D U LAT I O N VO LTAG E - R elease a l l range buttons - Press mode button AM/1 k H z;...

  • Page 37: Adjusti Ng Table H.f. Oscillator

    Table 1 Adjusting table h.f. oscillator Adjusting Adjusting Poi nter at Pointer a t Perm issible Adjusti ng Adjusting Button M H z mark element tol!!rance tolerance ( 802/. . ) mark tol erance element ( i nd icated ..;;; k H z ..;;;...

  • Page 38: Blanking The F L Y-Back During Wobbling

    & Measure the voltage at output H F OUT (e.g. with i nstrument 2006, Bruel Kjaer) Adjust the output voltage with potentiometer H F AMP L ITU D E to 50 p.V. Potentiometer H F A M P L I TU D E should b e i n position 5 0 p.

  • Page 39: Measuring Set-Up To Determine The Frequency Sweep And The Symmetry

    10,7 M H z PM 5120 PM 5321 9 6 M H z ::; 20 m V 3 0 0 KH z "' O, 5 V � � "V O U T O U T E R RECT I F I E R POWE R D I V I D E R VOL- M E T yp 874...
  • Page 40 Table 2 Checki ng table freque ncy modu lator S cale pointer Adj usti ng Asymmetry Button M Hz F requency sweep t o ( M H z ) (L'lf l - L'lf2 ) ( 802/. . ) el ement ( i ndicated sca le) on unit 1 k H z...

  • Page 42: List Of Parts

    3.6. L i st of pa rts 3.6. 1 . M EC H A N I CAL Descrip tion Fig. Ordering number I tem Ornamental strip 5322 460 600 1 7 Ornamenta l surround 5322 460 600 1 4 5322 4 1 4 74024 K nob, 0 1 8.7 K nob, 0 24 5322 4 1 4 74025...

  • Page 43: Front V Iew W Ith Item Numbers

    Fig. 33. Front view with item numbers Fig. 34. Bo ttom vie w...

  • Page 44: Left-Side View

    Fig. 35. Top vie w Fig. 36. Left-side view...
  • Page 45 ®- - <0 MAB225 Fig. 37. Scale dri ve...
  • Page 46 This parts list does not contain m u lti-pu rpose and standard parts. These components are ind icated in the circuit d iagram by means of identification marks. The specification can be derived from the s u rvey below. Diese Ersatzteill iste enthalt keine U n iversal- und Standard-Teile. Diese sind im jeweiligen Prinzipschaltbild mit Kennzeichnungen versehen. Die Spezifikation kann aus nachstehender Obersicht abgeleitet werden.
  • Page 47 Resistors (rl) Descrip tion Type Value Ordering number Item H F-voltage d ivider 0. 1 W 5322 1 05 40007 60 1 Potentiometer 5322 1 0 1 240 1 2 Unit M etal f i l m M R 30 5322 1 1 6 50253 Potentiometer 0.

  • Page 48: Electrical

    Capacitors Descrip tion Ordering number Value Item 35 0 Lead feed-through 5322 1 22 70069 1 00 58 1 Lead feed-through 1 00 5322 1 22 70069 F eed-th rough -20/+50 4822 1 22 70063 2 . 2 n F Feed-th rough 4822 1 22 70063 2.2 n F...
  • Page 49 Descrip tion Value Ordering number Item Cera m i c -20/+80 5322 1 22 1 0 1 07 1 00 Cera m i c -20/+ 1 00 5 3 2 2 1 22 30 1 03 5 4 1 Trimmer 1 00 2 .
  • Page 50 Miscellaneous Ordering number Descrip tion I tem U n i t 1 ; pri nted w i r i ng board 5322 2 1 6 641 1 2 U n i t 2 ; pri nted w i r i ng board 5322 2 1 6 64 1 1 3 U n i t 3;...
  • Page 51 I ntegrated circuits Ordering number T ype Location F J H 1 3 1 /7400 5322 209 84 1 43 Unit 1 : 32 1 SN7 490N 5322 209 84 1 1 4 Unit 1 : 322, 323 TAA3 1 0A 5322 209 8436 1 Unit 1 : 324 5322 209 84 1 1 1...
  • Page 53 Fig. 39. Prin ted wiring board 1 Fig. 40. Demoun ting the push-bu tton unit on unit 1...

  • Page 54: Pri Nted Wiring Board 1

    1 2 - s · MA8249 Fig. 4 1. Prin ted wiring board 2 M A 8232 MA8226 M A 8229 M A 8230 M A 8233 MA8227 M A 8231 MA8228 Remarks - Osc i l l ograms recorded with Tektro n i x osc i l loscope, type 50 1 A p l u g in 3A6 of osc i l l oscope and PM 5324 see table 4, page 55 setti ngs...

  • Page 55: Pri Nted Wiring Board 2

    Settings of osc i l l oscope and PM 5324 Table 4 P M 5324 Osc i l loscope Other adjustments Pressed button Osc i l logram V/cm . . secs./cm nu mber 1 0 m WO B . .4 . . 5 1 0 m WOB .
  • Page 57 p:,� .�. 30-80 -1 1 0 4 :; ---- F R EQ U E N C Y M O D U L A T O R O S C I L L A T O R __ __ __ __ _ __ __ __ __ _ __ __ _...
  • Page 58 O U T D C I AT T E N U A T O R ----_ . ----_ . ---- . -- - Ii ' f[J� CALIBRATION OSC I L L A T O R 6 5 ' 802/ . b'·1 "', 7 �...
  • Page 59 r-=- 3 2 4 --_ . [ B-- r -- --i BC238 C BeJ08 IA 3 1 0 A BC238 :-� BF251- BFW IO ' 8 ' • " . ' f ' />1 V 50 B FX 89 A M P L I F I E R , l I B Y 161- BO 135 BO l36...

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