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Summary of Contents for PM 3342

Page 1: ...PHILIPS WiIUDi PM 334 OUAI T0 ACE Y AMPI PM 3342 DUAL TRACE UNIT 9499 440 04911 21 869 2 02 03 ...

Page 2: ...3 IMPORTANT In correspondence concerning this apparatus please quote the type number and the serial number as given on the type plate at the rear of the apparatus ...

Page 3: ...ave response 27 V Controls and their functions 13 G Frequency response curve 29 VI Applications 15 H Defection and shift 29 A Amplitude measurements 15 B Differential measurements 15 J Input attenuators 29 C Phase measurements 16 K Blocking of channels A and B 30 D Single time base 16 L Rejection factor 30 M Triggering 30 SERVICE NOTES N Cho in pp g 31 VII Block diagram 17 O Alternate 31 VIII Vert...

Page 4: ... 26 7 TU 5 pulser 28 8 Left hand view 28 9 Measuring probe directly earthed 29 10 Input RC standardiser 30 ll Amplifier channel A 38 12 Amplifier channel B 39 13 Dual trace unit 40 14 Output amplifier 40 15 Trigger amplifier 41 16 Drift compensator 41 17 Attenuator channel A 44 18 Attenuator channel B 48 19 Trigger amplifier circuit 52 20 Dual trace circuit 56 21 Y amplifier circuit 61 ...

Page 5: ...can be displayed Trigger of the time base occurs at choice on one of the two input signals or on the combined signal The amplifier data apply to channel A as well as to channel B adjustable AC or DC push button for checking the zero level 1 MS2 15pF BNC 400 V PM 9331 A 10 10 MS2 8 pF 1 10 tol 3 1 OOOVpeak adjustable to 10 calibrated values 10 20 50 mV cm etc up to 10 V cm tolerance 3 continuous at...

Page 6: ...channels A and B chopped frequency 500 kc s or 20 kc s internal selection facility 4 channels A and B alternately 5 channels A and B added 6 channels A and B externally chopped symmetrical square wave voltage minimum 1 VP _p maximum 20 Vp _p 100 kc s 1 100 ns 70 pF A B or A B in position ADDED only 3 mm for frequencies up to 10 Mc s 2 cm for frequencies up to 20 Mc s 1 cm for frequencies up to 1 M...

Page 7: ...T CHOPPED O B OAC DC r b DCBAL Z MOD 1PM 3330 BLOCKING OSCILLATOR CATH FOLL AMPLIFIER and a bi stable multivibrator which supplies the switching voltage The trigger voltage for the basic oscilloscope is taken from one of the channels via a selector switch A trigger amplifier amplifies this voltage so that the trigger signal and the Y input signal have identical amplitudes In position ADDED of the ...

Page 8: ...pe PM 3330 Switching on is effected with the mains switch of the basic oscilloscope Approximately 10 minutes after switching on the unit has reached its operating temperature and meets the technical data When using the PM 3342 the switch on the rear side of the basic oscilloscope should be set to position MULTI TRACE CHOPPER ...

Page 9: ...12 DN tIDS PM 334 DUAL iRA SK8 ate SK6 SK 9 SK 10 Fig 2 Front view with indication of controls and connections ...

Page 10: ...the time base voltage ADDED the voltages at the output of both ampli fiers Aand Bare added Dependent on the position of the polarity switches the sum or the difference of the input signals is applied to the Y amplifier of the basic oscilloscope EXT The channels are switched with a voltage CHOPPED the frequency of which is equal to that of BU3 the voltage applied to socket EXT CHOPPED TRIGG A The t...

Page 11: ... defection on the screen With this knob the trace can be shifted in Y direction The working direction of this SHIFT knob is depen dent o n the position of the polarity switch The deflection coefficient of the amplifier can be checked by applying the calibration voltage of the basic oscilloscope to the input socket If the deflection coefficient does not correspond to the indicated value it can be c...

Page 12: ...e should be measured the DC component can be removed from the signal with the aid of the AC DC switch If measurements have been carried out via measuring probe PM 9331 A 10 the deflection coefficient of the V cm switch should be multiplied by a factor 10 The accuracy of the measurement can be increased by precisely adjusting the deflection coefficient with the GAIN control in the relevant position...

Page 13: ...s by adjusting knob TIME cm step and continuous control of the basic oscilloscope in such a way that one period of the signal to be measured corresponds to a whole number of centimetres on the screen D SINGLE TIME BASE If the signal to be measured requires the use of the single sweep display of the basic oscilloscope the MODE switch of the PM 3342 should be set to position CHOPPED Selection of the...

Page 14: ...KS and the relay when the added mode is used In this way triggering on the desired signal is possible and triggering on the chopper is impossible Display MODE switch SKS In position A as well as in position B the multivibrator is held in the stable state that allows the signal coming from the selected channel to pass through its electronic switch to the common amplifier In the ADDED position the m...

Page 15: ...01 T520G R3 i p R1 J R4 6 3V SK 5 11 Bu y Fig 3 Block diagram detailed SK 5 Amplifier TS 301 TS 304 Norrcal Invert SK2 moo l l SK8 o El Switch T 5 206 TS209 RS 0 R7 R6 El Switch TS306 TS309 Channel A or Channel B o SK 6 Final A m pl TSG01 TSG09 1 Bu y 0 0 0 24V r SK 5 o Multi vibr TS 503 TS 504 z Trigg Ampl TS G02 IS 609 17 Bu y RE 601 16 Bu y O I 32 Bu y o f o 24V SK 5 O O z4v SK 5 0 D SPLAY MODE...

Page 16: ...the illusion of two complete waveforms on the screen as shown in Fig 5 To prevent hazing as the spot moves from one trace to the other blanking pulses derived from the blocking oscillator are fed to the CRT via 9 BU Y III IY I II III 3 L 5 6 Fig S Display 3 L 5 6 7 _ I II 5 6 7 0 I _ PEM 2898 In the EXT CHOPPED position operation is the same as for CHOPPED except that now the blocking oscillator w...

Page 17: ...K2 and from SK2 to the fourth stage are effected by means of a 300 Ohm ribbon line which is terminated by R249 and the series connection of R254 R256 The power is supplied at the junction of R254 R256 In this way the total dynamic resistance at the collectors of TS203 and TS204 amounts to 75 Ohms The fourth stage consists of two cascode amplifiers TS206 TS208 and TS207 TS209 which are push pull co...

Page 18: ... and R511 and triggers the blocking oscillator as mentioned under ALTERNATE Every time the blocking oscillator operates a pulse appears at winding S1 of transformer T501 It is routed to terminal 9BU Y to momentarily blank the display on the sereen To ensure that the blanking pulses reach the CRT at the moment that the switching pulse delayed by the vertical amplifier reaches the Y deflection plate...

Page 19: ... amplifier is adjusted at the first stage by R605 the quiescent DC level of the output is ad justed by changing the value of R623 The output of the trigger amplifier is connected to the trigger amplifier of the main frame via contacts of relay RE601 When MODE selector SKS is in the ADDED position the relay is energised and the output of the trigger amplifier is disconnected The main frame trigger ...

Page 20: ... connected to the basic oscilloscope via the rigid exten sion plug code number 4822 263 70009 For a complete adjustment of the instrument the se quence as described in this chapter is to be preferred R 313 Fig 6 Right hand view B D C BALANCE This adjustment should be carried out when the unit has obtained its operating temperature i e approxi mately 15 minutes after switching on Set the knobs of t...

Page 21: ... channel A With GAIN R4 adjust the sensitivity so that the trace height of the reproduced square wave voltage is 40 mm Set MODE SKS to ADDED and POLARI TY SK2 and SK8 to NORMAL and INVERT respectively Also apply the 40 m V calibration voltage to channel B by interconnecting the inputs of both channels With GAIN R6 adjust the sensitivity of channel B so that it is equal to that of channel A in this...

Page 22: ... to the following positions V cm SK4 to O1 V cm R3 to CAL MODE SKS and TRIGG SK6 to A Apply a 40 mV square wave with a rise time of 25 nsec to BU1 Adjust the frequency to 200 Hz and the timebase to 2 msec cm Select C217 and R263 so that optimum squarewave display is obtained Increase the frequency to 10 kHz and the timebase to 50 µsec cm Select C215 and R255 so that optimum squarewave display is o...

Page 23: ...d 1 To check the overshoot the time coefficient of the basic oscilloscope should be adjusted to 1 µsec cm Apply asquare wave voltage with a frequency of 3 Hz resp 20 Hz and a rise time of 25 nsec Check that in both cases the display shows no tilt 10 kHz and the time base that optimum squarewave 100 kHz and the time base that optimum squarewave G FREQUENCY RESPONSE CURVE After adjusting the square ...

Page 24: ...ht should amount to 40 mm or 22 At the same time adjust the trimmers mentioned in the table for optimum square wave response Calibration voltage V cm SK4 SKIO Channel A Channel B 40 mV ol 80 mV 02 C32 C132 2 V OS C34 C134 4 V 1 C38 C138 8 V 2 C42 C142 2 V 5 C46 C146 4 V 1 C49 C149 8 V 2 C53 C153 20 V 5 C57 C157 40 V 10 C61 C161 2 Input capacitance With the aid of an input RC standardiser e g Tektr...

Page 25: ...eck that in position ADDED of MODE SKS the trigger voltage is taken off via relay RE601 For this apply a voltage with a frequency of 100 kHz to channel A and with LEVEL of the basic oscilloscope adjust for a triggered display The triggering should not be affected by switching over TRIGG SK6 With POLARITY SK2 and SK7 to NORMAL time base A should start again on the positive going edge of the signal ...

Page 26: ...base lines should be written continuously but alternately after each other Check this also if the time co efficient of time base A has been adjusted to OS µsec Remark In case of breakdown one can always apply to the world wide PHILIPS Service Organisation Whenever it is desired to send the apparatus to a PHILIPS Service Centre for repairs the following points should be observed tie on a label bear...

Page 27: ...SK4 SKS SK10 8 6 1 4822 413 30084 Knob SK6 9 6 3 4822 413 70039 Cap 10 6 1 4822 413 30082 Knob R1 R7 11 6 2 4822 413 70038 Cap 12 6 2 4822 413 30085 Knob R3 RS 13 6 2 4822 413 30164 Push button SKI SK7 l4 8 1 4822 216 50108 Unit 9 Amplifier 15 6 1 4822 216 50109 Unit 10 Trigger amply 16 6 1 4822 216 50102 Unit 12 Dual trace 17 8 1 4822 216 50104 Unit 13 Drift comp 18 8 1 4822 216 50114 Unit 14 Amp...

Page 28: ... 2 10 Mil 5 0 5 W _ 1 SMi2 5 1 SMS2 10 Wire wound resistor Drahtwiderstand Draadgewonden weerstand Resistance bobinee Resistencia bobinada Ceramic capacitor pin up Keramikkondensator Pin up Perltyp Keramische kondensator Pin up type Condensateur ceramique type perle Condensador ceramico version colgable Microplate ceramic capacitor Miniatur Scheibenkondensator Microplate keramische kondensator Con...

Page 29: ... R41 141 482211120109 20 4 kS2 0 1 1 Carbon R42 142 482211120152 990 kS2 0 1 1 Carbon R43 143 482211120107 10 1 kS2 0 1 1 Carbon R44 144 482211120237 995 k52 0 1 1 Carbon R46 146 482211120238 5 03 kS2 0 1 1 Carbon R47 147 482211120239 998 kS2 0 1 1 Carbon R48 148 4822 110 30115 2 kS2 0 1 1 Carbon R49 149 482211120121 1 M52 0 1 1 Carbon R51 15 4822 110 30107 1 kS2 0 1 1 Carbon R205 305 482211120121...

Page 30: ... 60045 69 pF Trimmer cer C201 202 4822 121 40029 10 nF 2S0 Polyester C204 304 4822 121 40059 100 nF 2S0 Plate capacitor C206 306 4822 121 40029 10 nF 2S0 Polyester C208 308 4822 121 40056 S6 nF 2S0 Plate capacitor C211 311 904 390 pF S00 Choice capacitor C213 313 4822 121 40059 100 nF 2S0 Plate capacitor C214 3 4 4822 121 40047 10 nF 2S0 Plate capacitor C217 317 39 nF 250 Polyester choice cap C218...

Page 31: ...1 402 AFZ12 Transistor TS403 409 BFY90 6 Transistor TS606 609 BC107 4 Transistor TS501 AF124 1 Transistor TS502 ASZ21 1 Transistor TS503 504 BSY39 2 Transistor TS602 605 BSY38 4 Transistor VALVES Number Type Qty Description B201 202 301 302 EC1000 4 Triode should be selected for minimum hum noise and microphony Service code 4822 131 10008 Note Transistors TS203 TS204 TS303 TS304 should be selected...

Page 32: ...38 R4 R 4 _ 45 K6 I A 65K 6I F R219 PEM 3739 Fig Il Amplifier channel A ...

Page 33: ...39 R 6 R 6 3 SK6 T A 5 SK6 I F R 319 PEM 3740 Fig 12 Ampler channel B R355 24V iav 70V 6 3V 150 V ...

Page 34: ...40 6 3V 24V R 254 11 SK 5IF 7 SK 5IF R 359 10 SK SIA R 521 12 SK SIA 4 55K SIIF 1 Fig 13 Dual traee unit e TS 401 GR401 Fig 14 Output amplifier eT5402 PAM a cz ...

Page 35: ...41 R 631 R 632 24 V 12V PEM 2801 _1_ 15K6I F Fig IS Trigger amplifier Fig 16 Drift compensator 24 V 24 V R 2 P R 8 F 150 V 0 V GR 206 GR 305 6 3V C1 M M M OD N N N N D M Q L PEM 2802 ...

Page 36: ... I 1 1 R 203 1X cz 1 500 X I I L 1 1 68 sfi L C 57 I I I C 29 j I 68 1 ISc 28 I J __ _ __ 1 SX C34 R 28 L 20 x C 42 L 11oox _ _ J I I I C 52 I C 51 R 43 I 68 T I I J _ I I I C s9I R 48 i I i I I _J X I I I I C 33 I 68 I I OX C38 I I I I C3g R36 68 1 _ j 1C 31 1 I I so x I I 68 I 1 1 t I I R39 C48j V C47 R4t T I I 68 a 1 I L 200 X C 53 I 1 R n C 56 1 C54 R46T I 68 I I L r000 x I cas C61 I I O a I I...

Page 37: ...K 7 o o 1 R 303 i i 1 X 0127 c 29 68 T C 126 y R 129 6 X C 134 68 r C 137 I I i I C 136 R133 I L 20 x I c 142 C 143 68 C 144 R 138 r100X _ _ _ C 149 R 142 c 1s1 68 L 00 X L C 157 C 1s8 68 R 147 1 I C 1ss R 148 i T I R 143 C 152 I I I I r X C131 _ I lox C 133 68 C 138 R P31 I L so x c 1 as L 200X ___ C 153 L 156 I I L r00 X C 161 C r 7 163 I L ___ ___ _ PEM 28O7a R 149 C164 R 151 T2 ...

Page 38: ... V SK6IF R 232 V 10 V T5602 BSY36 R606 R607 N R 332 R605 8606 I 2K7F T5603 BSY36 R609I n i s C BSY 38 8C 107 10V Fig 19 Trigger amplifier circuit I zc v 1 T 902 A 902 902 P T 9oa 168uY R433 32 BuY R436 R629 22 c606 f00K 1TV 15KSII A PEM 2809a ...

Page 39: ...TS502 ASZ 21 GR508 C509 Z N E Rsn ASZ 21 BSY 39 17V 23V GR501 GR502 R508 8 9V r IG 2N5 7 4 V 8 4V 0 b R516 R519 r o 39 6 3 V 100K Std C511 RSt2 r iR513 T 33 cs12 T5503 TSSOG BSY39 BSY39 BAV38 GR503 18 2 V BAY38 AF124 R509 n 0 T R50 AAZ 17 ORS C5i3 100K GRSJ6 AAZ17 SKSIIA 0 24 V 2 O 0 O Q1 RE 601 0 _t7V t9V R51 Y U R 259 R 359 C 5 6 8 F O SK5 Fa 11 O O 11 0o SKSIFb o R 4 01 O 0 0 1 SKSIFc R520 2GV ...

Page 40: ... 1 1 3V RI33 55K6 F 0 h R 332 R2ii R2 6 6801 czu 820 23 SV C213 100 KT C309 eL209820 T5203 R239 AFZ72 T530 AFZ12 R 333 R33t T5303 68 AFZ72 A 6V R33L C311 JJK 35K6Z A TS 30i AF212 r h y R2G7 t2 V 3G9 i 2CV V C313 GI R3G7 100K 2 Y 2LV V GV SK 2 R252 33 Ilo Il II II II II II 8251 II T 270 I II I R257 5KB II II II O C 21L lOK 215 R353 S5 C 31L lOK C 715 270 0 R25t I56 C G V R 352 X331 R351 s R 356 835...

Page 41: ...en parallel zu den Kondensatoren geschalteten Trimmern C 220 and C 320 vorgenommen 2 Zur Steigerung der Stabilitat der Endstufe ist der Wert von R 405 and R 410 in 100 S2 33 S2 geandert worden Bemerkung Folgende Anderungen wurden bereits in der 03 Ausfuhrung vorgenommen 1 der Wert von R 233 and R 333 wurde auf 68 S2 erhoht 2 R 201 and R 301 wurden kurzgeschlossen in der Ersatzteilliste wurden C 50...

Page 42: ...3 V 1 OSV1 R725 R331 2 0 V Ts3d AF212 T5302 AFZ12 c zo9 820 T5203 R139 68 AF212 O N Rz37 4 K62 A 55K6 F R 332 ki 3v R33 68 8336 1 33 J 1 3V TSIOG AFZ1I T5303 AFZ12 1530 AF212 C213 100 K C30 68 R339 C32 820 R247 tZ V 2 sV 1 R251 II 215 270 4 V R152 33 R25 Gr i R256 O 8257 10 V R262 ei 16820 1K R25t T520 AFZI2 T5107 AF Z12 10 V 2cv c 19820 C313 N R3G7 OOKT uv 4V 1 2GV 24V 9 Y NIR351 II II II II II I...

Page 43: ... tubes previously used The printed circuits are separately available for modernising old type plug ins see enclosed instructions Further changes are 1 C401 is replaced by a 6 pF trimmer paralleled by a 6 2 pF cer capacitor 2 The value of R238 R246 R338 and R346 has been changed to 510 S2 3 The value of R242 and R342 68 S2 has been changed to 82 S2 4 The value of R419 180 S2 has been changed to 56 ...

Page 44: ...6 R207 R208 ft209 R219 R223 L201 L202 C201 C202 C207 C213 d At the drift compensator print remove B202 and interconnect 1 and 9 Remove R219 and R319 Change R211 and R216 for resistors 6800 S2 1 8 W 5 e Mount the FET unit using two 3 mm metal spacers and connect it according to the circuit diagram shown below f Plug the DUAL TRACE Unit into the basic oscilloscope Balance according to chapter XI Bl ...

Page 45: ... die entsprechenden Teile zu selektieren a An der Entstoreinheit neben dem 32poligen Stecker Anschluss der 150 V Speisung entfernen and 6 3 V Speisung auf der Driftkompensatorprintplatte mit 10 SZ 10 W belasten b Anschlusse der 2 erwahnten Speisungen zwischen der Entstoreinheit and den Verstarkerleiter platten entfernen c Auf der Verstarkerleiterplatte Kanal A 150 V Speisung and 6 3 V Speisung ent...

Page 46: ...couplage pros de la fiche a 3L poles enlever la connexion de 1 alimentation 150 V et charger 1 alimentation 6 3 V avec 10 Sl 10 W sur la platine de compensateur de drive b Enlever les connexions des deux alimentations mentionn es allant de 1 unit de d couplage aux platines d amplificateur c Sur la platine d amplificateur canal A enlever 1 alimentation 150 V et 1 alimentation 6 3 V et connecter C20...

Page 47: ...8 AL o 39 IN Fig 1 ate 33 2 820 BFY90 SIG OUTe i 4K2 70V 5 5 W R222 BFW 11 OC BAL SIGNAL IN OUT f R267 24V DC R 224 OUT q 33 BFY90 _T 820 Ordering code Channel A 4822 216 50137 Channel B 4822 216 50136 Fig 2 24V SIGNAL IN D 0 0U T MA5266 TS 201 S 202 MA 5258 70V vi 4K7 SSW ...

Page 48: ...1 J m u Scrapped v E u R 508 u R259 r GR212S N a 7 i h v O R249 r p R246t0 0 rc v gnu a u I I O lR256 n OiR25C O R253 W C i CZ 0 Q IA n U J J j O ry R224 R255 K2 242 o IR241 O R 4Y 2 0 R237 g y R222 20 7 K 2 R1 R1 tl Fig 3 MA5265 R4 Ry 1 4 S K6 I A 65K 6I F R218 f 1C 215 ...

Page 49: ...508 I i T5502 ASZ 21 1 csoc 100K s 53 E GR 508 C509 R sn R508 8 9V r K 2N5 0 o R516 R519 039 6 3 v 100K Stl GR501 BAY3 GR502 N C 5 1 _ 1 r 3 R 2 3 TS503 TSSOG BSY39 BSY39 BAV3B GR503 8AY38 18 2 V R510 R SO9 GRSOG AAZ 17 1 R51c C5i3 100K GRSJ6 AAZ17 R 259 R 359 17V 1 C 516 8 F RS14 tupvj V 9 Bu V J I K AAZ 17 BAY 38 17V 23V ASZ 21 BSY 39 So of o AF124 5K SIIA 24 V 2 0 0 0 1 RE 601 0 o SK5IFa 0 0 r ...

Page 50: ...R2G1 2cv R239 4 SK 2 II o II II R7 tl N II II C 21G ry R25t I I R257 o x 120 C 212 820 23 SV 2GV O R253 b 255 0 O 10 V QC216820 r 1K R 258 T5206 AFZ12 4 1v R509 a 7v R262 b 4 4VI R263 6 0 c2Te C 20 15 H c 217 x180 R26G R259 R261 9 4 1v T5207 AF Z12 R266 l 1K T 10v I8 0 a GR211 BAY39 R302 c3oe f t N N a R2G7 I 2G V 12V TS 311 56K BFW11 GR303 BAX16 R 310 R327 YI R306 TS 312 IOV BFY90 820 R308 1302 1...

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