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  • Page 1 Web: http: // www. pearl - hifi . com Ave. SW, Calgary, 86008, 2106 33 AB; CAN T2T 1Z6 Ph: + .1.403.244.4434 Fx: + .1.403.245.4456 E-mail: custserv @ pearl - hifi . com Inc. ❦ Perkins Electro-Acoustic Research Lab, Inc. Engineering and Intuition Serving the Soul of Music Please note that the links in the P logotype above are “live”...
  • Page 2 Verso Filler Page...
  • Page 4 (for applicable). FOR SERVICING AND SPARES ENQUIRIES SEE THE INFORMATION AT START OF SECTION 5. TELEQUIPMENT is a registered trade mark of TEKTRONIX U.K. LTD. IX U .1<. L TO OSCILLOSCOPE TEKTRONIX INC., 313 Chase Road P.O.
  • Page 6 Scan by Zenith INTRODUCTION The S61 is a single trace solid state oscilloscope using FET input circuitry for minimum drift and fast stabilization time. A CRT with 8 cm 10 cm scan provides a bright and clear display. The design of this instrument is subject to continuous development and improvement, consequently this instrument may incorporate minor changes in detail from the information contained herein.
  • Page 7: Table Of Contents

    Scan by Zenith CONTENTS SECTION Page SECTION Page SPECIFICATION CIRCUIT DESCRIPTION Cathode Ray Tube (CRT) Attenuator and Vertical Amplifier Cooling CRT Circuit and Power Supply Horizontal Deflection Sweep G enerator; Unblanking and External Horizontal Amplifier . . Horizontal Amplifier Circuit Sweep Rates .
  • Page 8: Specification

    Scan by Zenith SECTION 1 SPECIFICATION CATHODE RAY TUBE (CRT) Display area Phosphor Standard Special Order Overall accelerating potential VERTICAL AMPLIFIER Bandwidth DC coupled -5 MHz AC coupled 2 Hz 5 MHz Risetime �70 Max. amplitude div at low frequency decreasing to div at Deflection factors Calibrated (12 ranges...
  • Page 9: Power Supply

    Scan Zenith Sensitivity Internal 5 MHz 0 . 5 div minimum amplitude required External 5 MHz lV mi nimum amplitude required 20 Hz Triggers at power line frequency L ine POWER SUPPLY S upp l y Voltages The instrument will operate at any voltage in the ranges 95 - 1 30 vol ts 1 9 0 - 260 vol ts S u pp l y frequency...
  • Page 10: Operating Instructions

    The S61 relies on convection c oo li and care should be t e r taken to see that nal air circulation is not restricted.
  • Page 11: Trigger Source

    10 V amplitude provi· The following are typical applications of oscilloscope type ding a good contrast. A positive going S61. Only outline procedures are given to allow the user to Signal of similar amplitude will blank adapt the method to individual requirements. Familiarity the trace.
  • Page 12 Scan Zenith VOLTAG E M E ASUR E M E NT B E TWE E N PO I NT S E XAMP LE 2.6.3 O N A WAV E FO R M P roceed as in 2 . 6 .2 above substituting the two measurement If the distance between th e points is 2 .
  • Page 13 Scan Zenith 2.6.9 Set the TIME/DIV switch that the COR R ECT I ON FO R M U LA FO R F AST R IS E TIM E WAV E· points of the waveform lie within the centre 8 divi· FO R M S When the rise time of the oscilloscope is of the same order sions horizontally.
  • Page 14: Trigger Circuit

    Scan Zenith SECTION 3 CIRCUIT DESCRIPTION ATTENUATOR VERTICAL AMPLIFIER from either TR 1 or TR2 col l ector and fed to the l imiter stage (fig. TR7. R1 2 and R 1 6 adjust for equality of trigger setting when The input si gnal i s connected via C902 in the A C position to selecting +ve and -ve output.
  • Page 16: Maintenance And Re-Calibration

    2 5 mV p p 1 kHz sq u a rewave into th e verti c a l i n p u t TELEQUIPMENT. a n d adjust R61S to g i ve two lines 5 d i vs apart.
  • Page 17 Scan Zenith 4.3.3.5 4.3.3.2 POS I T I ON AND VO LTS/DIV B A L A N C E (R 603 R604) PULSE R ESPONSE C604 Set AC-DC-O to OV and vertical POSITION control to Set VOLTS/DIV t05mV. Display a 100kHz squarewave signal (Ensure that the mid-trace.
  • Page 18: Component List

    Scan Zenith SECTION 5 COMPONENT LIST will All requ ests for repairs o r replacem e n t parts s h o u ld be di rected to t h e T e k tr o n i x F i eld Off ice o r representatIve in you r area. Th i s p r ocedu r e assu re you t h e fastest possible service.
  • Page 19 Scan Zenith D ESCRIPTION D ESC R IP TIO N VA LU E V A L U E TY P E TO l R ATI N G Eff. C I R PA R T T Y P E RAT I N G Eff.
  • Page 20 Scan Zenith C I R PA R T V A L U E D E SC R I PTI ON T Y P E TO l R AT I N G Eff. R EF N U M B E R Ser.
  • Page 21 Scan Zenith V A L U E S a r. N a. Ser. N o. N UM B E R E ft. T Y P E T O L R AT I N G E ff. CI R PA R T VA L U E TYPE TO L...
  • Page 22 Scan Zenith C I R P A R T Eft. VA L U E T Y P E T O L R AT I N G Eff. C I R PA R T VA L U E TYPE TO L RA T I N G R E F N UM B E R...
  • Page 23: Mechanical Parts

    Scan Zenith M E C H AN I C A L PARTS the mechanical For t h e pos i t i o n o f pa r t see the e x p loded v i ew o p p o s i t e . E ff.Ser.
  • Page 24 Scan Zenith 51 (U. K ) Se-choned } 52 ( U S A ) REAR VIEW ( Par 1 1 5 1 1 6 /, 39 /1'/ FRONT PROT ECTION Parl' � ( O pllona l ) /�' fJ) " ­ ShOWing Brack"t &...
  • Page 25: Circuit Diagrams

    Scan Zenith SECT I O N 6 C I R C U I T D I A G R A M S To m i n i m i z e t h e r i s k o f m i s i n t e r p ret a t i o n o f c o m p o n e n t val u es o n c i rc u i t d i ag r a m s , t h e d e c i mal p o i n t has b ee n rep l a ced b y t h e m U l t i p l i e r o r s u b ·m u l t i p l i e r o f t h e b a s i c u n i t .
  • Page 26 Scan Zenith 6 4 2 6 4 6 605 606 6 2 2 65 2 RESISTORS 61 4 635 637 61 5 6 2 4 903 904 61 6 6 09 9 1 3 CA PACITO R S 6 1 4 6 1 1 5901 5902...
  • Page 27 Scan Zenith RESISTORS CAPAC I TORS I f< T R 4 T R I T R 7 0 1 0 3 T R S T R 2 MI SC. 5m s / d l v rlD" ---l + 6.5V- - - - -- - - - - - - - - - 1 5 0mV + 1 3 V...
  • Page 28 Scan Zenith · R E S 80 52 TO R S T R SI 0 62 0 51 O S 2 0 5 3 T R 5 7 T R 6 2 0 54 0 5 6 T R 5 9 TR53 T R 5 5 0 61...
  • Page 29: Time / Div Switch

    Scan Zenith RESISTORS 2 0 8 CAPACITORS 20 1 2 0 6 20 4 2 0 8 2 0 7 S 20 H R S20HF 0 201 S 20 1 - 2 R S K 2 01 S201 -2F * C 2 0 5 TRIG / EXT X S K 2 0 1 X DEFLECTION...
  • Page 30 Scan Zenith 40 4 4 0 2 4 0 3 3 0 7 RESISTORS 3 0 4 3 0 8 3 11 3 1 3 4 0 7 3 01 3 0 5 3 0 9 3 06 4 0 5 4 1 0 4 04 40S 4 0 2 4 0 6 4 0 1...
  • Page 31 Scan Zenith PRE-SET CONTROLS (component side) P.q. '197 P.C. 2'1B...
  • Page 32 Scan Zenith 2 M-21 6 - 2 P C 21 6...

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