1. Manuals
  2. Brands
  3. Tektronix, Inc. Manuals
  4. Test Equipment
  5. 326
  6. Instruction manual

Tektronix, Inc. 326 Instruction Manual

Dual trace oscilloscope
Hide thumbs
Table of Contents

Advertisement

Quick Links

INSTRUCTION
MANUAL
Tektronix, Inc.
P.0. Box 500
Beaverton, Oregon
97005
Serial Number
273
070
1578-00
-

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 326 and is the answer not in the manual?

Questions and answers

Related Manuals for Tektronix, Inc. 326

Summary of Contents for Tektronix, Inc. 326

  • Page 1 INSTRUCTION MANUAL Tektronix, Inc. P.0. Box 500 Beaverton, Oregon 97005 Serial Number 1578-00...
  • Page 2 ' . , / ' ,> '~ ? ';'‘ ' ? > z r ; - ‘ . •* --* • " " RANTY are warranted again kmanship for one year. An' warranty should be taken up K J ^ |d Engineer or representative, d is p la c e m e n t parts should be OIMIX Field Office or representative reyour:...

  • Page 3: Table Of Contents

    326 (SN 300500-up) TABLE OF CONTENTS SPECIFICATION Page Page SECTION 1 SECTION 4 MAINTENANCE (cont) Recalibration Introduction Troubleshooting Aids Electrical Characteristics Troubleshooting Equipment Vertical Amplifier Time Base Replacement Parts Calibrator Assembly and Component Replace­ External Horizontal Input ment External Blanking...
  • Page 4 S O N Y /T E K T R O N IX 326 Oscilloscope. 326 (SN 300500-up)

  • Page 5: Specification

    Maximum Voltage: 500 volts direct coupled (DC + peak AC) or capacitively coupled DC voltage. The 326 can be operated from internal battery, an external DC source, or from the AC line (with battery Resistance: 1 M£2, w ithin 2%, direct and 10 M£2, w ithin charger attached).

  • Page 6: Time Base

    Specification— 326 (SN 300500-up) Chopped Mode Duty Cycle: 40% to 60%. Repetition Rate: 110 kHz w ithin 20%. Resistance: Approxim ately 10 k£2. TIM E BASE E XTER N A L HO R IZO N TA L INPUT Sweep Time/Div...

  • Page 7: Crt Display

    Specification— 326 (SIM 300500-up) CRT DISPLAY cathode current (full intensity) jjlA Graticule Area Calibrator waveform displayed: 2.5 hours or greater. 8 X 1 0 one-fourth inch divisions. 6 divisions of 10 MHz signal displayed: 1.5 hours or greater. Geometry Within 0.1 division.

  • Page 9: Operating Instructions

    POWER SOURCE REQUIREMENTS General Cell Removal (see Fig. 2-1) The 326 may be powered from either the internal Remove the three machine screws from the left edge Battery Pack (nine NiCd cells connected in series) or on an o f the Battery Pack fro n t panel.
  • Page 10 Operating Instructions—326 (SN 300500-up) 3. Remove the four machine screws that extend through the pack. 4. Carefully unsolder the copper strap and bare wire Applying external DC power with the polarity from the connector lug at the fro n t end.

  • Page 11: Function Of External Controls

    The controls, connectors, and indicators listed are recharging can be impaired or destroyed. An imbalance contained on the external surfaces of the 326, and are used between cells in a battery can develop during operation or during routine oscilloscope operation. A ll other controls are during partial charging.
  • Page 12 Operating Instructions—326 (SN 300500-up) LOW BATT Indicator lamp. During battery Vert Position V e rtic a lly adjusts display position. operation, lamp flashes to indicate that internal battery vol­ tage is low. If the battery voltage is X10 GAIN Pull the POSITION control knob to...

  • Page 13: Instrument Familiarization

    Operating Instructions—326 (SN 300500-up) POSITION X10 Horizontally positions the display. INTENSITY Adjusts display brightness. Pull the POSITION X10 HORIZ H O R IZM A G Display brightness affects battery MAG knob to increase the horizon­ operating time. tal gain by a factor of 10 (the...
  • Page 14 Operating Instructions—326 (SN 300500-up) b. CHECK-The LOW BATT Indicator should not flash. If necessary, adjust the probe compensation fo r the best fro n t corner response to the square waves as shown in Fig. 2-4. If LOW BATT Indicator flashes, charge the battery pack, replace the battery pack w ith a fu lly charged pack, or 4.
  • Page 15 Operating Instructions— 326 (SN 300500-up) Apply the CAL OUT signal to the EXT TRIG OR HORIZ INPUT connector using a patch cord. b. Set the EXT TRIG OR HORIZ ATTEN to IX . c. Set the TIM E /D IV to EXT HORIZ and TR IG ­...

  • Page 17: Circuit Description

    BLOCK D IAG RAM DESCRIPTION This section of the manual contains a description of the Intrument Block circuitry used in the 326 Oscilloscope. A brief description of the instrument block diagram (preceding the foldout The block diagram shows only the basic interconnec­...

  • Page 18: Basic Block Description

    Circuit Description— 326 (SN 300500-up) The trigger source (either the signal from the Trigger The first amplifier stage is a feedback amplifier con­ Preamp or the EXT TRIG) and the method o f coupling are sisting of the paraphase configuration Q41A and Q41B and selected in the Trigger Generator.
  • Page 19 Vert X10 X I Vert Gain Gain Var Volts/Div CH 2 Preamp identical except for trigger pickoff and calibrator cir- cuits. Fig. 3-1. CH 1 Vertical Preamplifier (2)
  • Page 20 Fig. 3-2. Vertical Switching and Output Am plifier (5)
  • Page 21 Circuit Description—326 (SN 300500-up) Trigger Preamplifier. Trigger source (CH 1 O N LY or from the junction of C335-C345, amplified in Q361, and NORM) is selected^ by S500, amplified by feedback fed to the blanking circuit via CR668# (7), to blank the amplifier Q505-QS95, and fed to the Trigger Generator, CRT beam during the switching interval.
  • Page 22 Circuit Description— 326 (SN 300500-up) Fig. 3-4. Unblanking and Sweep Generator (7) Output from the M iller runup is amplified in the Sweep Horizontal A m plifier. Signal from either the Sweep O utput Am plifier. The output signal is fed back to Q640...
  • Page 23 Circuit Description-326 (SN 300500-up) Fig. 3-5. Horizontal Amplifier (9) A low battery voltage indicator circuit flashes the Initially, the start m ulti provides a pulse to the turn-on circuit, which provides turn-on bias to the current driver front-panel LOW BATT lamp when the applied DC level circuit, gating current into T970 transformer primary.
  • Page 24 Circuit Description-326 (SN 300500-up) nating current in T970 and T980 primaries. A t the same secondary. This secondary voltage forward biases D940, tim e a pulse is connected to the turn-on disable circuit increasing the voltage level at Q942 anode. When Q942 which removes the turn-on signal to the current driver.
  • Page 25 Circuit D escription-326 (SN 300500-up) a.c. Supply Fig. 3-7. Battery Charger Charge current is supplied by the 5-6 terminals of T 1 101 The error signal is amplified in Q1121 and Q 1120, which secondary, the diode bridge, C R 1110, through pass transis­...

  • Page 27: General

    A ll replacement parts should be direct replacements Power Supply Voltage. Table 4-1 lists the voltage unless it is known that a different component will not tolerances o f the power supplies in the 326. If the power adversely affect the instrument performance. REV. B, OCT. 1974...

  • Page 28: Assembly And Component Replace

    Maintenance— 326 (SN 300500-up) Q878 Plastic Case Fig. 4-1. Transistor lead configurations. ASSEMBLY A N D COMPONENT Refer to the Parts Ordering Inform ation preceding the Electrical Parts List and Mechanical Parts List sections. REPLACEMENT General Special Parts exploded-view drawings...

  • Page 29: Ment

    Maintenance— 326 (SIM 300500-up) Fig. 4-2. Vertical Preamp circuit board removal. configuration of the semiconductors used in this instru­ ment. Some plastic cased transistors may have lead configurations which do not agree w ith those shown here. If a replacement transistor is made by a manufacturer other than the original, check the manufacturer's basing diagram fo r correct basing.
  • Page 30 Maintenance-326 (SN 300500-up) Fig. 4-7. Battery Charger circuit board removal. Fig. 4-5. Trigger Sweep circuit board removal. Power Supply-Regulator Cover Removal Remove the three machine screws on top of cover and two machine screws at the back end of cover as shown in Fig.
  • Page 31 Maintenance— 326 (SN 300500-up) ■ M B M . ! 1, Remove the Vertical Output! | and Horizontal circuit boards as; j shown in Fig. 4-3 and 4-4. 2. Remove the four feet from the rear panel and remove the rear;...

  • Page 32: Nstru Ment R Epackag I Ng

    T ektronix, Inc. Instrument Repackaging Contact the nearest TEKTR O N IX Field Office or Repre­ If the 326 is to be shipped over long distances by sentative. See Fig. 2 Repackaging (pullout. Mechanical Parts commercial transportation, it is recommended that the...

  • Page 33: Performance Check/Adjustment

    200 volts. For example, Fluke Model 825A Differential DC Voltmeter. As an aid to checking the performance of the 326, a 2. DC voltmeter (VOM). Minimum sensitivity, 20,000 Short-Form Procedure is given preceding the complete ohms/volt;...

  • Page 34: Short-Form Performance Check

    17. Input RC Normalizer. Time constant, 1 M12 and 47 pF; attenuation, 2X; connectors, BNC. TEKTRONIX Sharp, well-defined trace. Calibration Fixture 067-0541-00. 18. 10X probe fo r the 326 and the 324 Test Oscillo­ Check Trace Alignment Page 5-4 scope. TEKTRONIX P6049A Probe is recommended (two supplied as accessories).
  • Page 35 Performance Check/Adjustment—326 (SN 300500-up) 4. Check Compression Page 5-5 15. Check Common-Mode Rejection Page 5-7 Rejection Ratio, 20:1. Compression not to exceed 0.15 division. 5. Check CH 1 X I Vertical Gain Page 5-5 16. Check Magnified Registration Page 5-8 Vertical deflection, 5 divisions, ±0.15 division.

  • Page 36: Performance Check Procedure

    Maximum deviation from a straight line, Control titles that are printed on the front panel of 0.1 division. the 326 are capitalized in this procedure (e.g., CH 1 VOLTS/DIV). Associated equipment controls are initial capitalized only (e.g., Output Amplitude).

  • Page 37: Check Compression

    Performance Check/Adjustment—326 (SN 300500-up) Check CH 1 X I 0 Vertical Gain g. CHECK—Deviation from a straight line should not exceed 0.1 division. a. Set the Standard Amplitude Calibrator for a 5 mV square-wave output. h. Vertically position the trace to the bottom graticule line.

  • Page 38: Check High Frequency Compensation

    Performance Check/Adjustment—326 (SN 300500-up) 10. Check CH 1 Input Capacitance d. CH EC K-Rotate the CH 1 Variable VO LTS/DIV control fu lly counterclockwise. Display must reduce to two Reset the controls as follows: divisions or less. TIM E /D IV .5 ms...

  • Page 39: A T Least 10 Mhz

    Performance Check/Adjustment—326 (SN 300500-up) Fig. 5-3. Input capacitance check, typical displays. 14. Check CH 1 Vertical AC-Coupled Lower Connect a High-Frequency Constant-Amplitude Sine- —3 dB Point Wave Generator to the CH 1 VERT INPUT connector through the GR to BNC adapter, 50-ohm BNC cable, 10X Reset the controls as follows: 50-ohm BNC attenuator and a 50-ohm BNC termination.

  • Page 40: Check Magnified Registration

    TIM E/D IV Set the Time-Mark Generator fo r 1-ms markers and Mode CH 1 the 326 TIM E /D IV to 1 ms. CH 1 VO LTS/DIV 0.01 Set the trigger control fo r a stable display in the...

  • Page 41: Check Variable Time/Div Range

    18. Check Variable Tim e/Div Range .5 ms 10 /us Set Time-Mark Generator to 10 ms marker and the 1 ms .1 ms 326 TIM E /D IV to 1 ms. (0.32 div) 2 ms .1 ms 5 ms .1 ms Set trigger controls fo r a stable display in the variable positive-slope area.

  • Page 42: Check External Horizontal Bandwidth (Upper -3Db Point)

    Performance Check/Adjustment—326 (SN 300500-up) d. Set the Standard-Amplitude Calibrator fo r a 10-volt Connect the low-frequency Sine-Wave Generator to square-wave output. the CH 1 VERT INPUT connector, through a BNC cable and BNC T connector. e. CHECK—CRT display for a horizontal deflection of 4.0 div to 6.7 div between dots (1.5 volts/div to 2.5...

  • Page 43: Check Low-Frequency Triggering

    Change the following control settings: 24, Check Low-Frequency Triggering CH 1 VO LTS/DIV 5 DIV CAL Input AC-DC GND (both buttons out) Set the 326 controls as follows: TRIGGERING TIM E /D IV 20 ms LEVEL/SLOPE -A U T O...

  • Page 44: Short-Form Adjustment Procedure

    CHECK that trace is w ithin ±0.3 Div. of graticule center AND INDEX w ith Q376 and Q386 collectors shorted together. SET Vertical POSITION control fo r zero meter reading 326 Serial N u m b e r__________________________________ between points A and B. Calibration Date - ______________________________ ADJUST R82 for a meter reading of 50 volts (Q457 collector and ground).

  • Page 45: Adjustment Procedure

    Performance C heck/Adjustm ent-326 (SN 300500-up) 23. Adjust Normal Timing Page 5-23 13. Adjust CRT Geometry Page 5-19 ADJUST R1062 fo r minimum curvature of markers ADJUST R611 midway between triggered display and auto sweep. and baseline. ADJUST R702 fo r one marker per division.

  • Page 46: Adjust T970 Primary Current

    Maintenance to that shown in Fig. 5-6B. Section (4). ADJUST—R942 for 3.6 divisions (3.6 amp) o f verti­ Connect an external DC supply to the 326 EXT DC cal display. POWER input jacks (note polarity). e. Remove the current probe.

  • Page 47: Adjust Intensity L Im It

    Performance Check/Adjustment— 326 (SN 300500-up) ADJUST—R907 (see Fig. 5-7B) fo r a meter reading o f —1900 volts. Change the variable DC power source output voltage between +9 and +32 volts. Set the INTENSITY control fu lly clockwise at +9 volts and fu lly counterclockwise at +32 volts.

  • Page 48: Check Low-Voltage Power Supply

    Vertically position the trace to the center graticule line. Disconnect the external DC supply and replace the Power Regulator in the 326. Reconnect the external DC c. Rotate the CH 1 Var VO LTS/DIV control through- I supply or replace the internal battery pack.

  • Page 49: Adjust Ch 1 Vertical X10 Balance

    Performance Check/Adjustment—326 (SIM 300500-up) 8. Adjust CH 1 Vertical X10 Balance (R36) Vertically position the CH 1 trace to the center horizontal line. Pull the CH 1 X10 VERT GAIN switch and check trace shift as the knob is pulled.

  • Page 50: Adjust Astigmatism

    Set the 191 to 50 kHz and depress the appropri­ controls (see Fig. 5-12A) for the best definition of the ate DC coupling switch on the 326. Connect a 10X probe markers w ithin the areas indicated in Fig. 5-12B.

  • Page 51: Adjust Crt Geometry

    Performance Check/Adjustment—326 (SIM 300500-up) f. Vertically position the trace to the top graticule line. g. Trace deviation from a straight line should not exceed 1/2 minor division. Vertically position the trace to the bottom graticule line. Trace deviation from a straight line should not exceed 1/2 minor division.

  • Page 52: Adjust Ch 1 X I Vertical Gain

    Connect the Square-Wave Generator Fast-Rise+Out- 16. Adjust CH 1 X10 Vertical Gain (R41) put connector to the 326 CH 1 VERT INPUT connector through a GR to BNC adapter; 42-inch, 5012, BNC cable; a. Reset the Standard Amplitude Calibrator to 5 mV, 50 12, 10X, BNC attenuator;...

  • Page 53: Adjust R418, R428, C417, C427, C418, And C428

    .5 ms CH 1-NORM CH 1 a. Install the calibration shield on the 326. Connect the Square-Wave Generator High-Amplitude +O utput to the CH 1 VERT INPUT connector through a GR to BNC adapter; 42-inch, 50 12, BNC cable; 10X, 50 12, BNC attenuator;...

  • Page 54: Adjust Volts/Div Switch Compensation

    CH 1 VO LTS/DIV CH 1-N O R M CH 1 a. Connect the P6049A Probe to the 326 CH 1 VERT INPUT connector. b. Install a GR to BNC adapter; 10X, 50 £2, BNC attenuator; and BNC to Binding Post adapter on the Square-Wave Generator High-Amplitude O utput connector in the order given.

  • Page 55: Adjust Magnified Registration

    Push the X10 HORIZ MAG switch in. a 50 £2 termination. b. Set the Time-Mark Generator fo r 5 ms markers and set the 326 TRIGGERING controls fo r a stable display. Position the middle marker (three markers displayed) to the center vertical graticule line.

  • Page 56: Adjust Sweep Length And Centering

    A d ju s t Sweep Length Centering (R618-R704) b. Set the 326 Horizontal POSITION control to mid­ a. Adjust the TRIGGERING controls fo r a stable range and pull the X10 HORIZ MAG knob. display. c. ADJUST—R717 (see Fig. 5-16A), X10 Gain adjust­...
  • Page 57 Set the Test Oscilloscope fo r a vertical deflection factor of .02 V o lt/D iv and a sweep rate of .5 ms/Div. d. Connect the probe tip to point G on the 326 Fig. 5.19. Ground connection required to charge Battery Pack Horizontal C ircuit board (see Fig.
  • Page 58 Performance Check/Adjustment—326 (SN 300500-up) c. Connect a precision DC voltmeter across the 0.3-ohm g. Vary the line voltage between 90 and 136 volts. resistor (R 1115) in the battery pack. h. CHECK— Voltage drop across R 1115 should notvary d. Set the FULL CHG— TRICKLE switch to FULL more than ±5 mV.

  • Page 59: Electrical Parts List

    326 (SN 300500-up) ELECTRICAL PARTS LIST Replacement parts should be ordered from the Tektronix Field Office or Representative in your area. Changes to Tektronix products give you the benefit of improved circuits and components. Please include the instrument type number and serial number with each order for parts or service.
  • Page 60 Electrical Parts List— 326 (SIM 300500-up) ELECTRICAL PARTS L IS T ( c o n t ) Tektronix Serial/Model No. Ckt. No. Part No. Disc Description CAPACITORS (cont) 281-0194-00 2-8 pF, Var, Cer C23B 281-0600-00 35 pF, Cer, 10% C23C 5.5-...
  • Page 61 Electrical Parts List— 326 (SN 300500-up) ELECTRICAL PARTS LIST (cont) Tektronix Serial/Model No. Ckt. No. Part No. Disc Description CAPACITORS Ccont) C350 290-0183-01 1 yF, Elect., 35 V, 10% C352 283-0230-00 470 pF, Cer, 500 V, 20% C361 283-0059-00 1 yF, Cer, 25 V, +80%-20%...
  • Page 62 Electrical Parts List—326 (SN 300500-up) ELECTRICAL PARTS L IS T ( c o n t ) Tektronix Serial/Model No. Ckt. No Part No. Disc Description CAPACITORS (c o n t) 51 pF, Cer, 50 V, 10% 283-0228-00 C566 51 pF, Cer, 50 V, 10%...
  • Page 63 Electrical Parts List— 326 (SN 300500-up) ELECTRICAL PARTS L IS T ( c o n t ) Tektronix Serial/Model No. Ckt. No. Part No. Disc Description CAPACITORS (c o n t) 290-0457-00 4.7 pF, Elect., 10 V, 20% C696 300000...
  • Page 64 Electrical Parts List-326 (SN 300500-up) Grid Tektronix Serial/Model No. Part No.____ Eff__________ Disc Description CAPACITORS (cont) 0.05 pF, Cer, 1000 V, +100%-0% C1046 283-0293-00 C1048 283-0293-00 0.05 pF, Cer, 1000 V, +100%-0% C1050 283-0068-00 0.01 yF, Cer, 500 V, +100%-0%...
  • Page 65 Electrical Parts List— 326 (SN 300500-up) ELECTRICAL PARTS LIST (c o n ts ) Tektronix Serial/Model No. Ckt. No Part No. Disc Description DIODES (c o n t) CR279 152-0327-00 50 V, 75 mA, BAX 13 CR280 152-0071-00 Germanium, ED-2007...
  • Page 66 Electrical Parts List— 326 (SN 300500-up) ELECTRICAL PARTS LIST (cont) Grid Tektronix Serial/Model No. _______________ Description____________ Disc Part No. DIODES (cont) 50 V, 75 mA, BAX 13 CR670 152-0327-00 152-0327-00 50 V, 75 mA, BAX 13 CR672 50 V, 75 mA, BAX 13...
  • Page 67 Electrical Parts List— 326 (SN 300500-up) ELECTRICAL PARTS LIST (cont) Tektronix Serial/Model No. Ckt. No. Part No. Disc Description FUSES F870 159-0098-00 1.6 A, fast-blo 159-0097-00 F1101 0.4 A, fast-blo 159-0100-00 FI 101 0.2 A, fast-blo INDUCTORS 276-0543-00 300500 L416...
  • Page 68 Electrical Parts List—326 (SN 300500-up) ELECTRICAL PARTS LIST (cont) Tektronix Serial/Model No. Ckt. No, Part No. Disc Description TRANSISTORS (cont) Q291 151-0190-02 Silicon, NPN, 2N3904 Q299 151-0190-02 Silicon, NPN, 2N3904 Q333 151-0220-00 Silicon, PNP, 2N4122 Q343 151-0220-00 Silicon, PNP, 2N4122...
  • Page 69 Electrical Parts List— 326 (SN 300500-up) ELECTRICAL PARTS LIST (cont) Tektronix Serial/Model No. Ckt. No. Part No. Disc Description TRANSISTORS (cont) Q726 151-0220-00 Silicon, PNP, 2N4122 Q732 151-0190-02 Silicon, NPN, 2N3904 Q738 151-0220-00 Silicon, PNP, 2N4122 Q740 151-0220-00 Silicon, PNP, 2N4122...
  • Page 70 Electrical Parts List—326 (SN 300500-up) ELECTRICAL P A R TS LIST (cont) Tektronix Serial/Model No. Ckt. No. lo. Part No. Disc Description (cont) 321-0636-00 100 f i , 1/8 W, 1/2% 315-0474-01 470 k f i , 1/4 W, 5%...
  • Page 71 Electrical Parts List— 326 (SN 300500-up) ELECTRICAL PARTS L IS T ( c o n t ) Tektronix Serial/Model Part No. Description RESISTORS (c o n t) 321-0297-30 12.1 k f i , 1/8 W, 1% 321-0297-30 12.1 k f i , 1/8 W, 1% 321-0264-30 5.49 k f i , 1/8 W, 1%...
  • Page 72 Electrical Parts List—326 (SN 300500-up) ELECTRICAL PARTS LIS T Ccont) Tektronix Serial/Model No. Ckt. No._________ Part No. Eff__________ Disc_____________________ Description RESISTORS Ccont) k£ R250 321-0217-30 1 . 7 8 1 / 8 B251 315-0101-01 100 £ 2 , 1/4 W, 5% 5.62 k £...
  • Page 73 Electrical Parts List— 326 (SN 300500-up) ELECTRICAL PARTS LIST (cont) Tektronix Serial/Model No. Ckt. No. Part No. Disc Description RESISTORS (cont) R360 315-0104-02 100 k f l , 1/4 W, 5% R361 315-0122-01 1.2 k f l , 1/4 W, 5%...
  • Page 74 Electrical Parts List—326 (SN 300500-up) ELECTRICAL PARTS LIST (cont) Tektronix Serial/Model No. Ckt. No. Part No. Eff___________ Disc____________________ Description RESISTORS (cont) 3 .9 k fl, 1 /4 W, 5% R449 315-0392-01 R450 315-0822-01 8 .2 k fl, 1 /4 W, 5%...
  • Page 75 Electrical Parts List—326 (SN 300500-up) ELECTRICAL PARTS L IS T ( c o n t) Tektronix Serial/Model No. Ckt. No. Part No. Disc Description RESISTORS (c o n t) R611 311-0609-00 2 k f i , Var 315-0103-02 10 k f i , 1/4 W, 5%...
  • Page 76 Electrical Parts List 326 (SN 300500-up) ELECTRICAL PARTS LIST (c o n t) Tektronix Serial/Model No. Ckt. No. Part No. Eff___________ Disc_____________________ Description RESISTORS (c o n t) R672 315-0101-01 100 f l , 1/4 W, 5% R674 315-0201-01 200 f l , 1/4 W, 5%...
  • Page 77 Electrical Parts List— 326 (SN 300500-up) ELECTRICAL P A R TS LIST (cont) Tektronix Serial/Model No. Ckt. No. Part No. Disc Description RESISTORS (c o n t) R754 3 1 5 -0 3 0 4 -0 1 300 k n , 1 /4 W, 5%...
  • Page 78 Electrical Parts List— 326 (SIM 300500-up) ELECTRICAL PARTS L IS T ( c o n t ) Tektronix Serial/Model No. Ckt. No. Part No. Disc Description RESISTORS (c o n t) R943 10 f t , 1/4 W, 5% 315-0100-01...
  • Page 79 Electrical Parts List— 326 (SN 300500-up) ELECTRICAL PARTS LIST (cont) Grid Tektronix Serial/Model No. Description Part No. Disc RESISTORS (cont) 1.8 M f i , 1/2 W, 5% R1133 301-0185-01 7.5 k f l , 1/4 W, R1135 315-0752-01 1 k f i , 1/4 W, 5%...
  • Page 81 326 (SN300500-up) SECTION 7 D IA G R A M S A ND C IR C U IT BOARD ILLU STR A TIO N S Symbols and Reference Designators Electrical components shown on the diagrams are in the following units unless noted otherwise: Capacitors = Values one or greater are in picofarads (pF).
  • Page 82 BLOCK DIAGRAM >...
  • Page 83 Fig, 7-2 'C' blu (teflon) '1S T C20 lead 'M ' C20 lead 'A ' grn-grn on gry (coax) 'B' shield Fig. 7-1. A1. CH 1 AC-DC...
  • Page 84 C H A N N E L 1 A TTE N U A TO R S C A L IB R A T O R < i> 326 OSCILLOSCOPE 5 N t " i o o S>QO - U P...
  • Page 85 Fig. 7-4. A3 Vertical Preamp component location.
  • Page 86 L' red (2 cond coax) 'E' blk-grn on wht BG' shield for 'L' & 'M' 'BC' 'BD' blk-grn on wht 'M' blk (2 cond coax) 'BL' shield for 'WZ'* 'W' blk (2 cond coax) 'AC' orn-orn on gry 'Z' red (2 cond coax) AA' yel-yel on gry (coax) 'BJ' blk-grn on wht...
  • Page 87 SEE PARTS LIST FOR EARLIER VALUES A N D SERIAL NUMBER RANGES O F PARTS MARKED W IT H BLUE OUTLINE. C H A N N E L 1 V E R T IC A L P R E A M P OSCILLOSCOPE R tV .
  • Page 88 'B' wht 'A' blu-blu on gry (coax) 'M' C220 lead 'N' C220 lead J C' blu (teflon) ffli Fig. 7-6. A2 Ch 2 AC-DC board.
  • Page 89 S230 XIOO X2 0 0 p a r t ia l A T T E N U A T O R CHANNEL 1 ATTEN U ATO R 3 1 < o OSCILLOSCOPE S M 3 ) 0 0 5 0 0 - U P...
  • Page 90 CH 2 VERT PREAMP I 1 U H \ / j f t °> 5 © £ Z ^ < a > C U <C V _ J <N —i jft L-U 0...
  • Page 91 'A' yel-ye! on gry (coax) 'B' shield for 'A ' ------- 'J' #20 teflon (162-0026-00)------- 'L' No. 20 teflon (162-0026-00) T blk on wht— 'K' No. 20 teflon (162-0026-00) 'E' vio on wht 'H' grn on wht 'F' brn on wht 'G' blk-grn on wht 'C' orn-orn on gry (coax) 'M' No.
  • Page 92 R478 h o o v (DCPL) + I00V FF0A\T (D C P L) FROM „ C .H 1 *»— + VERT SIGNAL TO CRT PFP PLATE VEP.T SIQMftL CRT O f t PLRTE + /O O V (DC p^) FRO/A L -F/OOV „...
  • Page 93 Located on back. 'C' orn-red on gry (coax) ‘O' shield for J C' 'E' orn-orn on gry (coax) J F' shield for 'E' J B' shield for 'A' 'A' red-red on gry (coax) Fig. 7-8, A6 Trigger Source board component location and wiring color codes. 'A' vio-wht on gry (coax) 'B' shield for 'A' 'E' blk-yel on gry (coax)
  • Page 94 SSOO TRIG- SOURCE 1 7 & O - b C I L L O ^ C O p E fc. JUV1£ \a l7-A...
  • Page 95 CDclf'l tt v -V-S V _ sw - » - » * ■ 4 - 5 V f r o m - M A r 1 0 1 4 d c p l t t 1 ) A - 7 i ‘ F X " C.
  • Page 96 'D' blu-orn on wht 'P' yel-red on wht 'SN' grn on wht 'BP' shield for 'BO' 'E' red on wht 'AR' grn-wht on gry (coax, 'AP' yel-wht on gry (coax) 'BO' orn (coax) 'BQ' brn on wht 'AQ' red on wht 'GG' blu on wht 'HH' vio on wht 'NR' blk-grn on wht...
  • Page 97 -'A' grn-blk on gry (coax) B' shield for 'A' ■'O' grn-red on wht J M' grn on wht 'R' red-wht on gry (coax) K' orn-wht on gry (coax)
  • Page 98 Fig. 7-11. A8 Trigger-Sweep board component locations.
  • Page 99 < 3 > SWEEP GENERATOR ifl < t~ Q I— < LU 0 CL § LU z ‘N iU-in f- &...
  • Page 100 “'C' yel-brn on wht 'D' grn-brn on wht K' yel on wht M' grn-red on wht 'E' blu-brn on wht L' red (teflon) 'F' vio-brn on wht 'G' gry-brn on wht 1 S T blu on wht 'H' orn-red on wht O' vio on wht 'B' orn-brn on wht 'A' red-brn on wht...
  • Page 101 S b Z O SHO W /V M EXT M 0 R I1 P O S I T I O N r / M E / D I V T I M I N G - S W I T C H <$>...
  • Page 102 J DG' blk-blu on wht NC' blk on wht 'MS' wht MC' orn on wht MB' brn on wht 'CE' blk 'P' blu-brn on wht 'CH' wht 'Q' vio-brn on wht 'S' yel on wht 'CG' shield for 'CC'. 'R ' blk-grn on wht ' G O ' grn-grn on gry (2 cond) 'M R ' blk-grn on wht...
  • Page 103 “'C' yel-brn on wht 'D' grn-brn on wht K' yel on wht J M' grn-red on wht 'E' blu-brn on wht L' red (teflon) 'F' vio-brn on wht 'G' gry-brn on wht 'Hr orn-red on wht 'Bf orn-brn on wht 'A' red-brn on wht —...
  • Page 104 H C R 8 7 0 *See Parts List for Fig. 7-14. A10 Horizontal Am plifier board component location. serial number ranges.
  • Page 105 HORIZONTAL AMPLIFIER < s> £ 0 <$> <s> H u f o'? o» r o “ J 1U u.J I ° f c - rcDO. h » < & +3> fC o I— o -7-10 <o « - <3> 6 1 O® >|L»...
  • Page 106 E' orn on wht (added when required) 'P' blk-blu on wht 'Y' red on wht 'K' blk-orn-brn on wht J R' red on wht 'A' blk (No. 22) 'M' red on wht (No. 22) 'L' brn (teflon) —'Z' red on wht \T grn-brn-blk on wht Df orn-brn on wht J B' red-brn on wht...
  • Page 107 'K' blu on wht Fig. 7-16A. Front. A l l Power Regulator-Rectifier board. 'B' red-brn on wht 'H' blk-blu on w ht------- 'C' blk-blu on w ht- J P' blk-blu on wht 'D' orn-brn on wht — 'A' red on wht Fig.
  • Page 108 POWER SUPPLY...
  • Page 109 /S’ blk-brn on wht — J AN' brn (teflon) J AK# orn-brn-blk on wht 'U' blk-brn on wht 'Z' red on wht 'X' blk-yel on wht P' blu (teflon) *C1052A and C1052B combined in one unit Q' grn (teflon) (C l052) in early production. -V ' orn on wht Fig.
  • Page 110 + IOOV + IOOV + IOOV P A R T IA U + IOOV P O V j t R P < ^G O O V _ f\T O R % 'U* O S C I L L o e c o p g CRT CIRCUITO «>N \0 o 5 0 o - UP...
  • Page 111 'GY' grn on yel —iAC' wht 'W' wht ------ 'AD' wht 'AE' b lk -------- -------------- 'OR' orn on wht 'B' blk------- 'F' wht 'AF' blk 'D' wht BL' blk 'H' blk (teflon) 'G 'blk (teflon) 'T' yel on wht 'J' blu (teflon) 'I' blu (teflon) 'X' blu on wht...
  • Page 112 T1101 C R II 0 5 F U L L C H U T R I C K L E C H < L P ^ R T / A l BATTERy vox CHASSI S JS7o + 10/8 V 8 A T T - >...
  • Page 113 Section 8— 326 (SN 300500-up) MECHANICAL PARTS LIST Replacement parts should be ordered from the Tektronix Field Office or Representative in your area. Changes to Tektronix products give you the benefit of improved circuits and components. Please include the instrument type number and serial number with each order for parts or service.
  • Page 114 Mechanical Parts List— 326 (SN 300500-up) INSTRUMENT (cont) Fig. & Serial/Model No. Index Tektronix Description Disc Part No. 1 2 3 4 5______________ _____________________________________________ 1 - 2 0 3 6 6 - 1 0 3 1 - 0 3 KNOB, r e d — VARIABLE...
  • Page 115 Mechanical Parts List— 326 (SN 300500-up) INSTRUMENT (cont) Fig. & Tektronix Serial/Model No. Index Description Part No. Disc 1 2 3 4 5 1 - 4 1 3 4 3 - 0 1 1 9 - 0 0 CLAMP, c a b l e ,...
  • Page 116 Mechanical Parts List— 326 (SN 300500-up) INSTRUMENT ( c o n t ) Fig. & Index Tektronix Serial/Model No. Description Disc Part No. 1 2 3 4 5________ 1-66 R E S IS T O R , v a r i a b l e ,...
  • Page 117 Mechanical Parts List— 326 (SN 300500-up) INSTRUMENT (Cont) Fig. & Index Tektronix Serial/Model No. Description Disc Part No. 1 2 3 4 5 1 - 8 9 4 0 7 - 1 0 3 9 - 0 0 BRACKET, s l i d e...
  • Page 118 Mechanical Parts List— 326 (SN 300500-up) INSTRUMENT ( c o n t ) Fig. & Index Tektronix Serial/Model No. Description Disc Part No. 1 2 3 4 5_________ 1 - 1 1 1 3 5 4 - 0 2 1 9 - 0 0...
  • Page 119 Mechanical Parts List— 326 (SN 300500-up) INSTRUMENT ( c o n t ) Fig. & Index Tektronix Serial/Model No. Description Part No. Disc 1 2 3 4 5______________________________ C IR C U IT BOARD ASSEMBLY, s w i t c h — AC DC C H -2...
  • Page 120 Mechanical Parts List— 326 (SN 300500-up) INSTRUMENT ( c o n t ) Fig. & Index Tektronix Serial/Model No. Description Disc Part No. 1 2 3 4 5________ 1 - 1 6 2 3 3 3 - 1 5 4 8 - 0 2...
  • Page 121 Mechanical Parts List— 326 (SN 300500-up) INSTRUMENT ( e o n t ) Fig. & Index Tektronix Serial/Model No. Description Part No. Disc 1 2 3 4 5________ 1 - 1 8 4 C IR C U IT BOARD A S S E M B LY -H O R IZO N TA L...
  • Page 122 Mechanical Parts List— 326 (SN 300500-up) INSTRUMENT ( c o n t ) Fig. & Index Tektronix Serial/Model No. Description Disc Part No. 1 2 3 4 5________ 1 - 2 0 8 1 2 9 - 0 3 6 0 - 0 0...
  • Page 123 Mechanical Parts List— 326 (SN 300500-up) INSTRUMENT ( c o n t ) Fig. & Index Tektronix Serial/Model No. Description Part No. Disc 1 2 3 4 5________ 1 - 2 3 7 3 8 6 - 2 1 8 4 - 0 0...
  • Page 124 Mechanical Parts List—326 (SN 300500-up) INSTRUMENT ( c o n t ) Fig. & Index Tektronix Serial/Model No. Description Part No. Disc 1 2 3 4 5_______________ ______________ PANEL, s id e 1 - 2 5 8 3 3 3 - 1 5 4 9 - 0 0...
  • Page 125 Mechanical Parts List— 326 (SN 300500-up) INSTRUMENT ( c o n t ) Fig. & Index Tektronix Serial/Model No. Description Part No. Disc 1 2 3 4 5 1 - 2 8 6 1 3 6 - 0 4 9 0 - 0 0...
  • Page 128 326 DUAL TRACE OSCILLOSCOPE...
  • Page 129 Mechanical Parts List— 326 (SN 300500-up) BATTERY CHARGER AND ACCESSORIES Fig* & Index Tektronix Serial/Model No. D escriotio n Part No. Disc ________________ _ 2 3 4 5 0 1 6 - 0 5 2 8 - 0 0 BATTERY CHARGER...
  • Page 130 Mechanical Parts List— 326 (SN 300500-up) BATTERY CHARGER AND ACCESSORIES ( c o n t ) Fig. & Index Tektronix Serial/Model No. Description Part No. Disc 1 2 3 4 5 2 - 2 5 1 3 4 - 0 0 1 3 - 0 0...
  • Page 131 Mechanical Parts List— 326 (SN 300500-up) BATTERY CHARGER AND ACCESSORIES ( c o n t ) Fig. & Index Tektronix Serial/Model No. Description Part No. Disc 1 2 3 4 5 2 - 5 2 TRANSISTOR m o u n tin g h a r d w a re s...
  • Page 132 MANUAL CHANGE INFORMATION At Tektronix, we continually strive to keep up with latest electronic developments by adding circuit and component improvements to our instruments as soon as they are devel­ oped and tested. Sometimes, due to printing and shipping requirements, we can’t get these changes immediately into printed manuals.
  • Page 133 ■ g ^ l MANUAL CHANGE INFORMATION T E K T R O N IX ® CHANGE REFERENCE S 2 3 3 5 1 GENERAL P R n p i ir.T DATE 4 - 1 0 - 7 5 t e c h n ic a l e x c e lle n c e CHANGE: DESCRIP1riO N POWER CORD CHANGES...
  • Page 134 EFF SN 3 0 1 4 6 3 -u p ELECTRICAL PARTS L IS T AND SCHEMATIC CHANGES CHANGE TO: C454 283-0080-00 0.022 |iF, Cer, 25 V +80%-20% (See Diagram 5) M 1 9 ,6 0 3 /2 7 4...
  • Page 135 326. EFF SN 301206-up MECHANICAL PARTS L IS T CHANGES Page 8 - 7 CHANGE TO: 1 7 9 - 1 7 9 2 - 0 0 3 0 0 5 0 0 -3 0 1 2 0 5 1 -1 5 8...

Table of Contents