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Tektronix 323 Series Instruction Manual

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I V I A I S I U A L
TYPE
323
OSCILLOSCOPE
Tektronix, Inc.
S.W. M illikan W ay •
P. O. Box 500 •
Beaverton, Oregon 97005 •
Phone 644-0161
•
Cables: Tektronix
268
070-0750-00

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  • Page 1 I V I A I S I U A L TYPE OSCILLOSCOPE Tektronix, Inc. S.W. M illikan W ay • P. O. Box 500 • Beaverton, Oregon 97005 • Phone 644-0161 • Cables: Tektronix 070-0750-00...
  • Page 2 /5 h WARRANTY All Tektronix instruments are warranted against defective materials and workman­ 1 lift ship for one year. Tektronix transformers, 'III manufactured in our plant, are warranted for the life of the instrument. iptejr* Any questions with respect to the war­...
  • Page 3 t ME MOuTlVlfVflATOft. CONTENTS Section 1 Specification Section 2 Operating Instructions TC * 1 .7 ,5 cou » /t**.s € Section Circuit Description Section 4 Maintenance Section 5 Performance Section 6 Calibration Parts List Abbreviations * T l> P M U U T lV Ih ^ A ^ O IL Parts Ordering Information Electrical Parts tist Mechanical Parts List Information...
  • Page 4 Fig. 1-1. Type 323 Oscilloscope. Type 323 ®...
  • Page 5 A power regulator circuit assures that in­ strument performance is not affected by variations in in­ The Sony/Tektronix Type 323 Oscilloscope is a solid-state ternal battery charge level, applied DC voltage or AC line portable instrument that combines small size and light weight voltage and frequency.
  • Page 6 Specification— Type 323 VERTICAL DEFLECTION SYSTEM (cont) Characteristic Performance Requirement O perational Information Bandwidth with Four-Division Reference Upper —3 dB Point, AC (capaci­ VARIABLE VOLTS/DIV control set to CAL. tive) and DC (direct) Coupled, Risetime calculated from bandwidth meas­ with Equivalent Risetime (with urement using the formula: or without P6049 Probe) X I gain...
  • Page 7 Specification— Type 323 VERTICAL DEFLECTION SYSTEM (cont) Characteristic Performance Requirement O perational Information Trace Shift Due to Input Current + 2 0 ° C to + 3 0 ° C 0.085 division, or less, at 0.001 volt/divi- Equivalent to 85 picoamperes, or less. sion.
  • Page 8 Specification— Type 323 Signal in m illivolts ap- plied to EXT TRIG OR HORIZ INPUT connector V erification Points (EXT TRIG OR HORIZ ATTEN set to I X ; in ­ £ Typical — 3 dB Points Vertical deflection crease signal 10 times in divisions fo r 1 0 X...
  • Page 9 Specification— Type 323 HORIZONTAL DEFLECTION SYSTEM (cont) Performance Requirement O perational Inform ation Characteristic External Horizontal Input Deflection factor EXT HORIZ VAR (VARIABLE TIME/DIV) con­ 20 to 30 millivolts/division. X 1 0 HORIZ MAG pulled out, trol set to CAL. EXT TRIG OR HORIZ ATTEN set to 1 X 200 to 300 millivolts/division.
  • Page 10 Charge temperature — 15°C + 20°C to + 2 5°C + 5 5°C 0°C 100% + 2 0°C to + 25°C +40 °C CATHODE-RAY TUBE (CRT) Sony/Tektronix T3230-31-1 rectangular. Tube Type P31 standard. Others available on special Phosphor order. 1 -6...
  • Page 11 This failure criteria, etc., may be obtained from Tektronix, Inc. Contact your local Tektronix Field office or representative. instrument will meet the electrical performance requirements given in this section following environmental test.
  • Page 12 13 inches (33.02 centimeters). Handle extended For optional accessories available for use with this instrument, see the current Tektronix, Inc. catalog. inches (27.05 centi­ Handle not extended meters).
  • Page 13 Type 323 SECTION 2 OPERATING INSTRUCTIONS Change information, if any, affecting this section will be found at the rear of the manual. NOTE continued. If the batteries become suf- ficently low, the Oscilloscope will stop Read the precautions contained in the First-Time operating and the lamp will stop flashing.
  • Page 14 Operating Instructions— Type 323 Fig. 2 -1 . External controls, connectors and indicators. ®...
  • Page 15 Operating Instructions— Type 323 POSITION Potentiometer. Sets the trace vertical DC ometers with a 10:1 ratio are connected to reference position. Determines the no-signal the POSITION shaft. The fine control has vertical position of the CRT beam by set­ 30° of rotation independent of the coarse ting the DC voltage applied to the vertical control.
  • Page 16 Operating Instructions— Type 323 Extends triggering limit to DC so that a as probe calibration. Has approximately 10 kS 2 source impedance. External load trigger will be generated for even the slowest change of signal through the se­ will decrease its output in proportion to lected trigger level.
  • Page 17 Operating Instructions— Type 323 Bottom Panel 3 to 2-W ire Adapter. Grounding is not provided through the AC power source when the adapter is in use. A separate The following screwdriver adjustments are accessible grounding connection must be used. through holes in the bottom panel. The procedure for ad­ Panel Cover.
  • Page 18 Operating Instructions— Type 323 EXT DC power connection Cover>securing scrow AC power connection Blk on w ht Interconnecting W ht leads Grn on w ht | H > i'll! I H !| Fuse location; pull 1 1 5 V term inals cover stra ight dow n to 2 3 0 V term inals expose...
  • Page 19 Operating Instructions— Type 323 WARNNG Infernal battery-powered operation should not be con­ tinued after the LOW BATT lamp starts flashing. The bat­ The battery used in the Power Pack is capable of tery should immediately be put on charge at a FULL CHG delivering a large amount of energy in a short rate to avoid the possibility of individual cells becoming time.
  • Page 20 Operating Instructions— Type 3 2 3 which are not in use should therefore be given a full re­ The charging characteristics of NiCd cells vary with the charge at least every three to six months to avoid their temperature existing during charge time. A cell which ob­ becoming reverse-charged.
  • Page 21 Operating instructions— Type 323 Front panel Left side panel Fig. 2 -4 . Control setup chart. POSITION (Vertical) Midrange for optimum presentation. Use the minimum CRT intensity necessary for good viewing to conserve battery power. X 10 HORIZ MAG POSITION (Horizontal) Midrange TIME/DIV .5 ms...
  • Page 22 Operating Instructions— Type 323 the increase in gain when the X 10 VERT GAIN control is out. Return the X 10 VERT GAIN control to its in posi­ tion. ' .: t 8. Set the VOLTS/DIV switch to .02. Observe that the ,\V.
  • Page 23 Operating Instructions— Type 323 the sweep is again triggered by the negative change in sig­ nal level. Continue the counterclockwise movement of the TRIGGER control and note that triggering occurs at progres­ sively more positive points of the waveform. See Fig. 2-7(B). Continue the rotation through the control center position.
  • Page 24 Operating Instructions— Type 323 31. Reset controls as follows: generator frequency until the trace disappears and then note the frequency. (The triggering circuit half-power point oc­ EXT TRIG OR HORIZ curs at approximately 16 Hz during AC-coupled operation.) ATTEN 5 DIV CAL 25.
  • Page 25 Operating Instructions— Type 323 VOLTS/DIV 5 DIV CAL VERT X 1 0 BAL INPUT CHECK— No vertical position shift of the trace occurs X lO VERT GAIN when the X10 VERT GAIN control is switched in and out. POSITION (Vertical) Midrange ADJUST—VERT X lO BAL until minimum trace shift oc­...
  • Page 26 P6049 Probe-Type 323 Oscilloscope combination is The 47 pF oscilloscope input capacitance is of little con­ 500 V DC + peak AC. Other Tektronix probes which allow cern when measuring DC or low-frequency signals. How­ measurement of voltages as high as 40 kV are available for ever, as frequency increases, the oscilloscope input capac­...
  • Page 27 100X SS 10 M fl and scope 2.5 pF 1000X 5S 100 MQ and 3 pF Current probe Permits current evaluation Current Probe; Amplifier R <0.03 without interrupting circuit (optional) increases range L < 3 [M 1See Tektronix catalog fo r specific equipment characteristics.
  • Page 28 Operating Instructions— Type 323 Using a screwdriver, adjust it as necessary to obtain op­ INPUT timum square leading corners on the square wave presen­ VOLTS/DIV tation. Rounding or overshoot should be minimized. VARIABLE (VOLTS/DIV) TIME/DIV .5 ms X10 VERT GAIN MISCELLANEOUS OPERATING HINTS X10 HORIZ MAG WARNING...
  • Page 29 Fig. 2 -1 3 . Inipoitance o f external trig g e rin g fo r phase or p o la rity com parison. (Signals supplied by Tektronix Type 106 Square-W ave Gen­ erator.) 2-17...
  • Page 30 Operating Instructions— Type 323 controls so that one cycle of the reference signal covers 9 Leading and Trailing Edges of Waveforms. The sweep in the lype 323 Oscilloscope is normally triggered by either divisions of horizontal Iruce, passing through 0° at the inter­ the increasing ( + ) slope or the decreasing (—) slope of the section of the graticule center lines as in Fig.
  • Page 31 Operating Instructions— Type 323 f j j f IB ) 4 5 ° or 3 1 5 ° phase angle. (A ) 0 ° phase angle. " 1 ■ V- ------j {:> . w?.. ■■J 135® o r 2 2 5 ° pha se a n g le .
  • Page 32 Operating Instructions— Type 323 1. Set the TIME/DIV control to .2 m s and determine the period time for 1 cycle. 2. Determine how many 0.4 ms divisions it takes to com­ plete 1 cycle, by dividing the period time (from step 1) by 0.4.
  • Page 33 Operating Instructions— Type 323 has a positive deflection polarity, indicating upward and Beam—The electron beam emitted by the cathode of a right deflection in response to + vertical and horizontal CRT. Its impinging on the phosphor creates the light on input signals, respectively.
  • Page 34 Operating Instructions— Type 323 signal musl supply with energy when the signal is applied Push-Pull— Currents or voltages which are equal in ampli­ to the input of a circuit. tude but opposite polarity. Also defines a circuit which has that type of response. Input RC Characteristics—The value of capacitance and DC resistance present at the input of the oscilloscope.
  • Page 35 Operating Instructions— Type 323 may be any quantity that varies in a definable manner. Trigger— A pulse used to initiate some function. In oscillo­ scopes, commonly refers to the signal which initiates the Sweep Generator—A unit that generates a signal used as horizontal sweep.
  • Page 36 Type 323 SECTION 3 CIRCUIT DESCRIPTION Change information, if any, affecting this section will be found at the rear of the manual. Introduction a linear sawtooth voltage, which drives the Horizontal Am­ plifier. The Horizontal Amplifier increases the amplitude of Block diagram and detailed descriptions of the Type 323 the sawtooth voltage as necessary to provide slightly more Oscilloscope circuitry are contained in this section.
  • Page 37 Circuit Description— Type 323 tion. At that time the Sweep Generator is disabled. The The Limiter (D86-D87, D88-D89) decouples the Buffer Am­ CRT becomes unblanked and the electron beam moves to plifier from the Paraphase Amplifier during overdrive con­ ditions. This prevents the Output Amplifier from being driv­ center screen.
  • Page 38 Circuit Description— Type 323 (1 ) A tten uato r output capacitance and P ream plifier circuit in p u t capacitance. (2 ) In com bination w ith ( 1 ) , provides the AC voltage division indicated by the selected attenuation factor. (3 ) In p a ra lle l w ith the (1 ) (2 )
  • Page 39 Circuit Description— Type 323 Fig. 3 -3 . Paraphase A m p lifie r, sim plifie d.
  • Page 40 Circuit Description— Type 323 Refer once more to the Q41 emitter circuit. If R46 is in cancellation of effects from + and — 5 V power supply switched info the circuit, it effectively decreases the re­ variations and FET thermal variations. sistance between Q41A and Q41B.
  • Page 41 Circuit Description— Type 323 plate voltages to be centered within their dynamic operat­ The effect of signals on the Limiter in the upper half ing range. of the amplifier is explained in this paragraph. (The re­ action of the lower half is identical, but is always of op­ posite polarity to that of the upper half.) A forward cur­...
  • Page 42 Circuit Description— Type 323 and diverts it to R135, Q133, and the base-emitter junction nector cause equal and opposite deviations from this value at the two plates, resulting in approximately 1 division of of Q160. The resulting increased drive to Q160 causes its deflection for each 18 volts of differential signal output.
  • Page 43 Circuit Description— Type 323 effect, simultaneously changing the base voltages of Q133, Q215 gate circuit, so no signal loss occurs across R212. Q137, Q163 and Q173. D213, D214, C212 and R212 provide overload protection for Q215 during EXT TRIG OR HORIZ operation and have no Miscellaneous Circuit Components.
  • Page 44 Circuit Description— Type 323 Trigger Multivibrator ative signal at the emitter combine their effects to increase the emitter-base forward bias, placing Q263 into conduc­ Non-automatic Operation. The Trigger Multivibrator is tion. In similar fashion, when Q253 is turned off, a positive a Schmitt Trigger circuit when operated in the non-automatic signal at its base will work in conjunction with the negative mode.
  • Page 45 Circuit Description— Type 323 curve which satisfies circuit voltage and current require­ Sweep Gate output to the Unblanking Amplifier, The cath­ ments. If a signal input causes the voltage or current to ode-ray tube is thereby unblanked when the sawtooth starts exceed the value at point B, the tunnel diode will switch rising and is turned off at the instant retrace is initiated.
  • Page 46 Circuit Description— Type 323 sulting increased time required to charge C330 causes a decrease in sweep rate (larger time/div value) from that in­ dicated by the TIME/DIV switch. Sweep Retrace. The positive-going Q326 collector volt­ age causes an increasing amount of current to flow through R346 and SWEEP LENGTH potentiometer R347.
  • Page 47 Circuit Description— Type 3 2 3 + 5 V <A> Q 263-C + 2 V ( B l) C301-D301 junction + 2 V IB 2) C301-D301 junction (C) D303 — 1 V + 2 V Q 305-C — 34 mV (E) Q 31 1-G —...
  • Page 48 Circuit Description— Type 323 The signal at the left deflection plate drives the Output blanking to occur. Protection from large external blanking Inverter, which supplies the signal to the right deflection signals is provided by R351 and D351. Signals at the EXT plate.
  • Page 49 Circuit Description— Type 323 o large resistor to the summing node. The POSITION con­ tions. R433 must be adjusted after R439 (SWP MAG REGIS) trol can move the fine potentiometer wiper 30° independent because R439 also affects the impedance of the shunt feed­ of the coarse potentiometer, moving the trace 1 division back path.
  • Page 50 Circuit Description— Type 323 Blocking Oscillator Operation emitter of Q450 follows the base down until D452 conducts and supplies additional current through Q450 to enable rapid charging of the capacitance associated with the de­ Refer to Fig. 3-8. When power is applied, a positive volt­ flection plate.
  • Page 51 Circuit Description— Type 323 Fig. 3-8. Blocking O scillator, sim plifie d. 3-16...
  • Page 52 Circuit Description— Type 323 (1 ) Blocking oscillato r T525 p ri­ mary voltage (2 ) Blocking oscillator T 525 p ri­ mary current (3 ) Drive volta ge Energy Storage Switch Q 52 9 (4 ) E m itte r-b a s e drive current through Energy Storage...
  • Page 53 Circuit Description— Type 323 field causes current to flow from the top of the winding, voltage at the base of Q558, which then determines the through D543, causing C543 to charge up to approximately voltage at the base of Q557. The current through R557 is + 100 V.
  • Page 54 Circuit Description— Type 323 Explanations regarding the remaining CRT elements ap­ this reference to the voltage generated by the battery charg­ ing current which flows through R615. The Comparator Am­ pear in conjunction with the High Voltage Power Supply plifier output controls the Driver Amplifier, which controls description.
  • Page 55 Circuit Description— Type 323 IA ) Q 621-B — 2 0 V Q621-E — 2 0 V + 2 V 1C) D ifferential voltage across R639 (waveform A — B) (D ) Q 620-B — 2 V IE) Q 617-B —...
  • Page 56 Circuit Description— Type 323 ing the presence of a charging pulse. See Fig. 3-10 (H) and (I). During TRICKLE CHARGE operation, R633 provides cur­ rent to R630. This increases the voltage at the base of Q634 and decreases the current through R639. With less drive, Q621 provides less drive current to Q620, which de­...
  • Page 57 Type 323 SECTION 4 MAINTENANCE Change information, if any, affecting this section will be found at the rear of the manual. mended schedule for average operating conditions is every Introduction 6 months or every 500 hours of operation, whichever oc­ Information contained in this section appears in the fol­...
  • Page 58 Tektronix served. The first-time operation listed in Section 2 can be lubrication kit, part no. 003-0342-00. Contact the Tektronix used for this purpose. All trouble symptoms should be evalu­ Field Representative if additional information regarding ated and compared against each other.
  • Page 59 Emitter-Base High reading one way (200 kQ or more) sistor curve display instrument such as a Tektronix Type Low reading the other way 575. If a transistor checker is not readily available, a de­...
  • Page 60 Maintenance— Type 323 Some diodes used in the Type 323 Oscilloscope are color — ls t Sig. Fig. coded to identity the diode type. A blue or pink first band — 2nd Sig. Fig. indicates that the next three colors translate to the last r —...
  • Page 61 All parts used in this oscilloscope can be purchased General. The troubleshooting charts contained here are through Tektronix Field Offices or representatives. However, designed to permit finding the mal-functioning circuit with a replacements for standard electronic items can readily be minimum of steps.
  • Page 62 Maintenance— Type 323 Master Troubleshooting Chart I n it ia l S etu p: P ow er Pack s w itc h p ro p o r p o s itio n ; P o w e r O N ; P O S IT IO N c o n tro ls “ i n " a n d c e n te re d ; V O L T S /D IV a t .0 1 ; T IM E / D IV a t EXT H O R IZ ;...
  • Page 63 When connecting com­ A solder removing device such as an EDSYN SOLDAPULLT, Tektronix Part No. 003-0428-00, is extremely useful in remov­ ponents, heat the solder sufficiently to allow free flow. ing solder from circuit boards, expediting component remov­...
  • Page 64 Maintenance— Type 323 Trigger G enerator Troubleshooting Chart. In itia l setup: TRIGGER a t + AUTO; VOLTS/DIV a t 5 DIV C A l; TIM E /D IV a t 1 mS; POSI­ TION controls “ in ” and d ispla y centered; POWER — O N ;...
  • Page 65 Maintenance— Type 323 Sweep G enerator Troubleshooting Chart. In itia l setup: D isplay is o b ta in a b le 1 'in EXT HORIZ mode; VOLTS/DIV set a t 5 DIV CAL; TIM E /D IV a t .5 mS; POSITION controls “ in ” and centered;...
  • Page 66 Maintenance— Type 323 H orizontal A m p lifie r Troubleshooting Chart. In itia l setup: VOLTS/DIV a t 5 DIV CAL; POSITION controls “ in ” and centered; TIM E / DIV a t 1 mS; TRIGGER a t + AUTO;...
  • Page 67 Maintenance— Type 323 115-230 v w irin g B attery Chargor board (•rm in als V ertical A ttenuator circuit board Power Regulator board Fuse (AC in p u t) Fuse (o pera ting pow er) Powor S u p p ly ___ board M a in board POSITION bracket...
  • Page 68 If one cell is defective and fails while the rest of the battery is still quite new, that cell may be replaced without undue concern. The Tektronix Field Representative or Office Transformer. To remove the transformer, unsolder its should be consulted before individual cells are replaced, eight leads from the circuit board.
  • Page 69 Maintenance— Type 323 The battery should be inspected every six months or every 500 operating hours, whichever occurs first. Individual cells or the entire battery should be replaced if venting or exces­ sive corrosion has occurred. The cover plate on the power connector side must be removed to expose one side of the battery.
  • Page 70 Maintenance— Type 3 2 3 partment can be had by removing the three screws from the Remove one screw from each end of the side control upper surface, and then lifting the board up and out, pivot­ panel, and remove the nut which is located near the inside- ing it on the wiring harness at the side of the board.
  • Page 71 Maintenance— Type 323 Fig. 4 -1 3 . Transistor data. 4-15...
  • Page 72 Maintenance— Type 323 Fig. 4 -1 4 . M a in circuit board (p a r tia l) ; lo ft side— vertical circuit components. 4-16...
  • Page 73 Maintenance— Type 323 ■I f$S*c 6 * 2 ,R593 J t5 9 7 R 5 9 2 ^ R 5 9 8 ( » » ST ^ , 1 \ S ^ £ S = > 5 9 4 H R330B R330D R330C I .
  • Page 74 Maintenance— Type 323 \T to X 1 0 VERT G A IN sw •K’ to X 1 0 VERT G A IN sw 'G ' Coax from VOLTS/DIV sw ■F1 + 5 V to vert POSITION D' to cw cont, VARIABLE VOLTS/DIV •E' —...
  • Page 75 Maintenance— Type 323 'L' to pin 6 , CRT 'M ' to pin 3, CRT ‘ N ’ to trace ro ta tio n coll, CRT to ccw cont, VARIABLE TIM E /D IV ‘ P’ to trace ro ta tio n coil, CRT TRIGGER, IF-2 •BT’...
  • Page 76 Maintenance— Type 323 To shld In VOLTS/DIV sw To VOLTS/DIV sw, 3F-5 To VOLTS/DIV sw, 2R-6 To VOLTS/DIV sw, 1F-6 To VOLTS/DIV >w, 3R-6 To INPUT sw To VOLTS/DIV sw, 1F-3 To VOLTS/DIV sw, 1F-12 To VOLTS/DIV sw, 3R-5 To VOLTS/DIV sw, 2R-12 To VOLTS/DIV sw, 3F-6 To VOLTS/DIV sw, 2R-3 Coax shld to *H \ M a in bd...
  • Page 77 Maintenance— Type 323 •A’ to 'K ', Pwr *»9 B' + 1 7 5 V to ‘ A O ’ , M a in bd •C' + 1 0 0 V to 'A N ', M a in bd R’ to ecw cont, INTENSITY *5 7 0 * D 5 7 S A j C572...
  • Page 78 Impedance, 50 ohms; accuracy, equipment. ± 3 % ; connectors, BNC. Tektronix Part No. 011-0059-00. For the most accurate and convenient procedure, special 11. Input RC normalizer. Time constant, 1 megohm X Tektronix calibration fixtures are used in this procedure.
  • Page 79 Performance Check— Type 323 a. Slowly decrease the output voltage of the variable only n partial check is desired, refer to the preceding DC power supply. sfep(s) for setup information. External controls or adjust­ ments of the Type 323 referred to in this procedure are b.
  • Page 80 Performance Check— Type 323 e. Position the trace to the top line of the graticule with d. Set the time-mark generator for one millisecond mark­ ers. the vertical POSITION control. e. If necessary set the TRIGGER control for a stable dis­ f.
  • Page 81 Performance Check— Type 323 b. Connect the standard amplitude calibrator (067-0502- a. Set the standard amplitude calibrator for a 50-milli­ 00) output connector to the VERT INPUT connector with the volt square-wave output. 42-inch BNC cable. b. Change the following control settings: c.
  • Page 82 Performance Check— Type 323 g. Disconnect all test equipment. a. Change the following control settings: INPUT X 10 VERT GAIN Pulled out 16. Check H igh-Frequency Com pensation b. Position the trace to the center horizontal line with the vertical POSITION control. REQUIREMENT—Optimum square-wave response with peak aberrations not to exceed + 2 % or —2%, or total aber­...
  • Page 83 Performance Check— Type 323 a. Change the following control settings: through the GR to BNC adapter, 42-inch 50-ohm BNC cable, 10X BNC attenuator and the 50-ohm BNC termination. VOLTS/DIV INPUT c. Set the constant-amplitude generator for a four-divi­ sion display, centered about the center horizontal line, at TIME/DIV 1 ms its reference frequency (50 kilohertz).
  • Page 84 Performance Check— Type 323 a. Push the X 10 HORIZ MAG switch in. TABLE 5-2 Normal Sweep Timing Accuracy CHECK— Using the TIME/DIV switch and time-mark generator settings given in Table 5-2, check normal sweep A llo w a b le timing within the given tolerances over the middle eight Time-mark TIME/DIV...
  • Page 85 Performance Check— Type 323 CAL (clockwise) e. Position the first ten-division portion of the total mag­ EXT HORIZ VAR nified sweep onto the viewing area with the horizontal X10 HORIZ MAG Pushed in POSITION control. b. Position the dot to the left vertical line of the graticule f.
  • Page 86 Performance Check— Type 323 c. Set the low-frequency generator for a six-division hori­ a. Change the following control settings: zontal deflection, centered about the center vertical line, VOLTS/DIV at one kilohertz. TRIGGER + AUTO d. Without changing the output amplitude, increase the TIME/DIV 5 /us output frequency of the generator to 10 kilohertz.
  • Page 87 Performance Check— Type 323 3 4. Chedk Low-Frequency Triggering O pe ra tio n 33. Check External Triggering O pe ra tio n REQUIREMENT— External, stable display in EXT TRIG OR REQUIREMENT— Stable display in EXT TRIG OR HORIZ HORIZ AC and DC positions of the Trig/Horiz Coupling AC and DC positions o f the Trig/Horiz Coupling switch with switch with the TRIGGER control set to + AUTO, variable the TRIGGER control set to + AUTO, variable positive-slope...
  • Page 88 Performance Check— Type 323 a. Remove the 50-ohm BNC termination and reconnect Check Low-Frequency Reject O pe ra tio n the low frequency sine-wave generator to the BNC T con­ REQUIREMENT—Stable display with 0.3-division display nector through the 42-inch BNC cable. at 30 kilohertz with the TRIGGER control set to + and —...
  • Page 89 Performance Check— Type 323 ing edge of the calibrator waveform (two microseconds or e. Set the TRIGGFR control for a '.table display. less risetime). f. Position the top of the waveform onto the display area with the vertical POSITION control. 39.
  • Page 90 Tektronix Part No. 012-0031-00. 2. DC voltmeter (VOM)1. Minimum sensitivity, 10,000 12. I X Probe with BNC connector. Tektronix P6011 Probe ohms/volt; accuracy, checked to within 1% at —1900 volts. recommended. For example, Triplett Model 630-NA.
  • Page 91 17. 10X attenuator. Impedance, 50 ohms; accuracy, —5 Volts, ±0.1 volt. ± 3 % ; connectors, BNC. Tektronix Part No. 011-0059-00. 18. Input RC normalizer. Time constant, 1 megohm X 6. Check + 14-Volt and + 175-Volt Page 6-8 47 pF; attenuation, 2 X ; connectors, BNC.

  • Page 92: Table Of Contents

    Calibration— Type 323 □ 27. Adjust High-Frequency Compensation Page 6-17 □ 13. Adjust Astigmatism (R597) Page 6-11 (Cl 60, Cl 70) Best definition of marker display. Optimum square-wave response at 100 kilohertz □ 14. Adjust Trace Alignment (R592) Page 6-11 with peak aberrations not to exceed + 2 % or —2%, or total aberrations not to exceed 3% peak to peak.
  • Page 93 Calibration— Type 323 slope areas; stable display cannot be obtained 39. Adjust External Horizontal Variable Page 6-23 at 30 hertz. Balance (R218) No trace shift as EXT HORIZ VAR control is ro­ 50. Check Trigger Slope Operation Page 6-27 tated throughout its range. Stable triggering on correct slope of trigger sig­...
  • Page 94 C alibration— Type 323 the Type 323. Removal instructions are given in the Main­ All waveforms shown in this procedure are actual wave­ tenance section of this manual. form photographs taken directly from the graticule. following procedure uses the equipment listed under Test Using the AC power cord, connect the power pack Equipment Required.
  • Page 95 Calibration— Type 323 T n l O K illO K O p* P rttitio n DC volHnufur V a ria b lt DC Powur Supply inch patch card* Fig. 6 -1 . In itia l Fig. 6 -1 . In itia l test equipm ent setup fo r steps 1 through 12. Vertical Controls Power Controls VOLTS/DIV...
  • Page 96 C alibration— Type 323 Point K Power Regulator board (intensity lim it test p o in t) Point L Power Supply board Intensity (h ig h voltage Limit test p o in t) (A ) Fig. 6-2. Location o f R615 Charge Rate adjustm ent (Power...
  • Page 97 Calibration— Type 323 5. Adjust —5-Volt Power Supply A djust + 5 -V o lt Power Supply (CAL OUT V oltage) a. Connect the precision DC voltmeter from the —5-volt test point (point Y, Main board; see Fig. 6-4A) to chassis a.
  • Page 98 Calibration— Type 323 TABLE 6-1 Power-Supply Ripple and Regulation Maximum output Power Maximum change o f supply Supply Ripple ( re g u la tio n ) -5 -V o lt 10 millivolts ±0.03 volt + 5-Volt 10 millivolts ±0.025 volt * 9 3 Lower Defl + 14-Volt...
  • Page 99 Calibration— Type 323 e. ADJUST— Upper Defl Plate DC Level adjustment, R91 i. ADJUST— Lower Defl Plate DC Level adjustment, R93 (see Fig. 6-5), to center the measured voltage range around (see Fig. 6-5) to center the measured voltage range around +5 0 volts.

  • Page 100: Adjust Astigmatism (R597)

    Calibration— Type 323 13. Adjust Astigmatism a. Test equipment setup is shown in Fig. 6-6. b. Set the INTENSITY control midway between a barely visible trace and fully clockwise. c. Connect the time-mark generator (Type 184) to the VERT INPUT connector with the 42-inch BNC cable. d.

  • Page 101: Adjust Limit Centering (R66)

    Calibration— Type 323 16. Adjust Limit Centering CHECK— Using the VOLTS/DIV switch and standard amplitude calibrator settings given in Table 6-2, check ver­ a. Set the VOLTS/DIV switch to 5 DIV CAL tical deflection within 3% in each position of the VOLTS/DIV switch.

  • Page 102: Check Trace Shift Due To Input

    Calibration— Type 323 22. Check Trace Shift Due to Input Current d. Set the INPUT switch to GND. a. Change the following control settings: e. CHECK— CRT display for straight line near the center INPUT horizontal line. X10 VERT GAIN Pulled out b.

  • Page 103: Check Input Capacitance

    Calibration— Type 323 oscilloscope Squaro-wavo g en erato r adopter 7 6 0 4 9 42-inch Ptobe BNC coblo Fig. 6 -8 . In itia l test equipm ent setup fo r steps 23 through 27. 23. Check Input Capacitance Vertical Controls VOLTS/DIV a.

  • Page 104: Adjust Internal Trigger Compensation

    Calibration— Type 323 Fig. 6 -9 . Typical CRT displa y when checking inpu t capacitance. Incorrect <0 ot fl at) c. Connect the probe tip to the BNC post jack. d. Set the square-wave generator for a five-division display at one kilohertz.

  • Page 105: Adjust External Trigger Compensation

    Calibration— Type 323 TABLE 6-3 VOLTS/DIV Compensation Adjust fo r optimum VOLTS/DIV switch Attenuator Square Flat setting compensated Corner - r 1 Compensate P6049 Probe C28B C28A 4- 5 C29B C29A Remove external 10X attenuator from generator -f- 10 C23B C23A Check If out of tolerance, compro­...

  • Page 106: Adjust High-Frequency Compensation

    Calibration— Type 323 n. ADJUST— Cl 60 and Cl 70 about the same amount in b. Disconnect the output of the BNC termination from the the same direction for optimum square corner on the CRT VERT INPUT connector and reconnect it to the EXT TRIG OR HORIZ INPUT connector.

  • Page 107: Check Upper Vertical Bandwidth Limit

    Calibration— Type 323 Hlgh-f>*qw*n<y Cal I bf at Ion (o m to n t-a ifip h tu d * l* w - f(* q v * n < y i l t i i U Tim«*morh liiW 'W O n g in t r o lo r con ifont-O ’n p titu d * ItiniM oi jamu...

  • Page 108: Bandwidth Limit

    Calibration— Type 323 d. CHECK— Output frequency of generator must be 2.75 megahertz or higher. e. Disconnect all test equipment. 30. Check AC-Coupled Lower Vertical Bandwidth Limit a. Connect the low-frequency constant-amplitude gen­ erator to the VERT INPUT connector through the 42-inch 50- ohm BNC cable and the 50-ohm BNC termination.

  • Page 109: Adjust Normal Timing (R401)

    Calibration— Type 323 32. Adjust Normal Timing e. INTERACTION—Check steps 33 through 38. a. Change the following control settings: 33. Check Variable Time/Division Control TRIGGER + AUTO Range X 10 HORIZ MAG Pushed in a. Set the time-mark generator for 10-millisecond mark­ b.

  • Page 110: Adjust High-Speed Timing

    Calibration— Type 323 d. Set the time-mark generator for one-microsecond mark­ Tenth ers. vertical line Eleventh marker e. Set the TRIGGER control for a stable display. f. CHECK— CRT display for optimum linearity and timing between the sixth and tenth vertical lines (see Fig. 6-17A). Sixth Tenth vertical line...

  • Page 111: Check Normal Sweep Timing Accuracy

    Calibration— Type 323 g. ADJUST—C446 (see Fig. 6-17B) for optimum linearity CHECK— Using the TIME/DIV switch and time-mark mid liming between flic sixth arid tenth vertical lines. generator settings given in Table 6-4, check normal sweep timing within the given tolerances over the middle eight divi­ h.

  • Page 112: Adjust External Horizontal Variable Balance (R218)

    Calibration— Type 323 lo w -fre q u e n cy Standord tine -w ave am plitude generator ca lib ra to r 4 2 -in c h 50-ohm BNC coblo BNC term ination Fig. 6 -1 8 . In itia l te st e q u ip m e n t se tu p fo r steps 3 9 th ro u g h 4 5 . Vertical Controls 39.

  • Page 113: Check External Horizontal Deflection Factor With 10X Attenuation

    Calibration— Type 323 EXT TRIG OR HORIZ ATTEN EXT HORIZ VAR CAL (fully clockwise) b. Connect the low-frequency sine-wave generator to the EXT TRIG OR HORIZ INPUT connector through the 42- inch 50-ohm BNC cable and 50-ohm BNC termination. c. Set the low-frequency generator for six-division hori­ zontal deflection, centered about the center vertical line, at one kilohertz.

  • Page 114: Check Internal Triggering Operation

    Calibration— Type 323 H igh-frequency Low-frequency constant-am plitude constant-am plitude sine-wave generator sine-wave generator GR to BNC adopter 42 -inch 50-ohm BNC cable Fig. 6 -2 1 . In itia l test equipm ent setup fo r steps 46 through 54. 46.

  • Page 115: Check External Triggering Operation

    Calibration— Type 323 i. Gel lire TRIGGER control to — AUTO. k. Without changing Ihe amplitude, set the yell oUlpUl erator to four megahertz. j. CHECK—Stable CRT display is presented with the Trig/ Horiz Coupling switch set to INT TRIG AC and ACLF REJ. .

  • Page 116: Check Trigger Slope Operation

    Calibration— Type 323 Set the low-frequency generator for a 0.3-division dis­ play at 30 hertz. m. CHECK—Stable CRT display is presented. n. Turn the TRIGGER control counterclockwise to the vari­ able negative-slope area. o. CHECK—Stable CRT display can be obtained with the TRIGGER control.

  • Page 117: Check Calibrator Risetime

    Calibration— Type 3 2 3 f. Change the following control settings: 53. Check Calibrator Repetition Rate VOLTS/DIV a. Change the following control settings: TRIGGER + AUTO TRIGGER + AUTO EXT TRIG OR HORIZ ATTEN TIME/DIV .2 ms X 10 HORIZ MAG Pushed in g.
  • Page 118 PARTS LIST ABBREVIATIONS internal binding head brass binding head steel length or long met. metal capacitor cap. mtg hdw mounting hardware ceramic outside diameter composition comp oval head brass connector conn oval head steel cathode-ray tube pan head brass countersunk pan head steel double end piste...
  • Page 119 If a part you have ordered has been replaced with a new or improved part, your local Tektronix, Inc. Field Office or representative will contact you concerning any change in part number.
  • Page 120 Type 323 SECTION 7 ELECTRICAL PARTS LIST Values are fixed unless marked Variable. Tektronix S erial/M odel No. Ckt. No. Part No. Eff_____________ Disc_______________________ Description Bulbs B509 150-0084-00 Neon GE 2AA Capacitors Tolerance ± 2 0 % unless otherwise indicated.
  • Page 121 Electrical Parts List— Type 323 Capacitors (cont) Tektronix S erial/M odel No. Description Part No. Disc Ckt. No. 281-0064-00 0.25-1.5 pF, Var Tub. Cl 60 0.0047 500 V Cl 62 283-0083-01 281 -0524-00 150 pF 500 V Cl 67 150 V 283-0003-01 0.01 pF...
  • Page 122 Electrical Parts List— Type 323 Capacitors fconfj Tektronix S erial/M odel No. Ckt. No. Part No. Disc Description 281-0091-01 C454 V a r 281-0627-00 C457 1 pF 600 V Elect. C491 290-0134-01 22 pF 1 5 V Elect. 290-0183-01 C493...
  • Page 123 Electrical Parts List— Type 323 (cont) Semiconductor Device, Diodes Tektronix S erial/M odel No. Part No. Disc Description Ckt. No. *152-0185-00 Silicon Replaceable by 1N4152 *152-0185-00 Silicon Replaceable by 1N4152 *152-0185-00 Replaceable by 1N4152 Silicon 152-0071-00 Germanium ED 2007 152-0071-00...
  • Page 124 Electrical Part* List— Type 323 Fuses Tektronix S erial/M odel Description Disc Ckf. No. Part No. Fast-Bio 159-0064-00 F501 Connectors Socket, Banana Jack Assy 136-0140-00 131-0274-00 131-0106-00 1 Contact, Female J205 136-0140-00 Socket, Banana Jack Assy J350 Inductors *1 08-0489-00 1.2 p H...
  • Page 125 Electrical Parts List— Type 3 2 3 Transistors (confj Tektronix S erial/M odel No. Description Part No. Disc Ckt. No. *151-0228-00 Silicon Tek Spec Q170 151-0234-00 Silicon 2SC805 Q173 Silicon Q215 151-1018-00 Replaceable by MP5 6521 *151-0192-00 Silicon Q231 *151-0192-00...
  • Page 126 Electrical Parts List— Type 323 Resistors (cont) Tektronix S erial/M odel No. Descriptio n Disc Ckf. Part No. y » w 321-0753-31 Prec 321-0754-31 Va W Prec lo o a Prec 321 -0636-00 ’/ 2% 315-0104-02 lo okn R 21...
  • Page 127 Electrical Parts List— Type 323 Resistors (coni) Tektronix Serial/Model No. Part No. Disc________________________Description Ckt. 3kn, 311-0692-00 R 76 V* w Prec 321-0251-30 4.02 kO V ,w 24 kn 315-0243-01 R 81 311-0689-00 2 X 10 V. w 24 kn 315-0243-01 y .w...
  • Page 128 Electrical Parts List— Type 323 Resistors (coni) Tektronix S erial/M odel No. Description Ckt. No. Part No. Disc R170 321 -0452-00 499 kO y . w Prec 315-0510-01 51 n ’A W R 171 62 Q ’A W R172 315-0620-01 ’A W...
  • Page 129 Electrical Parts List— Type 323 Resistors (contj Tektronix S erial/M odel No. Ckt. No. Part No. Disc Descriptio R314 321-0362-30 57.6 kn Prec y „w 315-0102-01 1 kQ R316 315-0152-01 1.5 kQ R321 315-0222-02 2.2 kQ ’A w R323 R324 315-0222-02 2.2 ka...
  • Page 130 Electrical Parts List— Type 323 (cont) Resistors Tektronix S erial/M odel Disc Description Ckt. No. Part No. 315-0273-01 27 kn R410 ’A W R411 315-0104-02 100kn ’A W 15 kn R412 315-0153-02 ’A W 315-0472-01 4.7 kn R414 ’A W 3.9 kn...
  • Page 131 Electrical Parts List— Type 323 Resistors (contj Tektronix S erial/M odel No. Ckt. No. Part No. Disc Description y *w 1.5 Mn 323-0498-00 Prec R534 y .w 321-0452-00 499 kn Prec R535 R541 315-0102-01 ’A W R547 315-0202-01 ’A W 321-0378-30 ’/8 W...
  • Page 132 Electrical Parts List— Type 323 Switches (contj Tektronix S erial/M odel Description Ckt. No. Part No. Disc Unwired or W ired Slide SW205 260-0905-00 ATTEN 1 X 10 X Rotary TRIGGER SW246 Wired *262-0821-00 SW246 260-0886-00 Rotary TRIGGER Rotary TIME/DIV...
  • Page 133 Electrical Parts List— Type 323 POWER PACK Tektronix S erial/M odel No. Ckt. No.____________Part No. Eff_____________ Disc________________________Description *016-0119-00 300000 302458 Complete Power Pack *016-0119-02 302459 Complete Power Pack Capacitors C605 290-0287-00 Elect. 25 V C623 283-0003-01 0.01 juF 150V C636 290-0114-01 Elect.
  • Page 134 Electrical Parts List— Type 323 Resistors (contj Tektronix S erial/M odel No. Part No. Disc Description Ckt. No. 315-0272-02 2.7 kQ ’A W R630 422 kQ Prec R633 321-0445-00 ’/ . w R635 315-0752-01 7.5 kQ ’A W 315-0102-01 1 kQ ’A W...
  • Page 135 Mounting separately, unless otherwise specified. PARTS ORDERING INFORMATION Replacement parts are available from or through your local Tektronix, Inc. Field Office or representative. Changes to Tektronix instruments are sometimes made to accommodate improved components as they become available, and to give you the benefit of the latest circuit improvements developed in our engineering department.
  • Page 136 Mechanical Parts List— Type 323 INDEX OF MECHANICAL PARTS LIST ILLUSTRATIONS (Located behind diagrams) FIG. 1 MECHANICAL PARTS FIG. 2 CABINET FIG. 3 STANDARD ACCESSORIES...
  • Page 137 Type 323 SECTION 8 MECHANICAL PARTS LIST FIG. 1 MECHANICAL PARTS Fig. & Index Tektronix S erial/M odel No. Description Part No. Disc 1 2 3 4 5 366-1031 -00 KNOB, red—VARIABLE CAL knob includes: 213-0153-00 SCREW, set, 5-40 x % inch, HSS 366-1037-00 KNOB, gray—VOLTS/DIV...
  • Page 138 Mechanical Parts List— Type 323 FIG. 1 MECHANICAL PARTS fcon/J Fig. a S erial/M odel Index ; Tektronix Description Disc Part No. 5_______________________________________ SWITCH, wired—TIME/DIV 1-21 262-0822-00 switch includes: SWITCH, unwired 260-0887-00 SHIELD, switch, fiat 337-0989-00 SHIELD, switch, angle 337-0990-00...
  • Page 139 Mechanical Parts List— Type 323 MECHANICAL fconfj FIG. 1 PARTS Fig. & Index Tektronix S erial/M odel No. Description Part No. Disc 5______ _____________________________ 376-0051-00 COUPLING, shaft extension, Vs to Vs inch coupling includes: 354-0251 -00 RING, coupling 376-0049-00 COUPLING,...
  • Page 140 Mechanical Parts List— Type 323 FIG. 1 MECHANICAL PARTS fco n fj Fig. & S erial/M odel No. Index Tektronix Description Disc Part No. 1-70 352-0084-01 HOLDER, neon LENS, indicator light 378-0541-00 COVER, cap, neon holder 200-0609-00 SHIELD, CRT 337-0983-01...
  • Page 141 Mechanical Parts List— Type 323 (coni) FIG. T MECHANICAL PARTS Fig. & S erial/M odel No. Index Tektronix Description Part No. Disc 5_______________________________________ 1-100 670-0579-00 ASSEMBLY, circuit board— POWER REGULATOR assembly includes: 388-0913-00 BOARD, circuit SOCKET, transistor, 3 pin -101 136-0220-00...
  • Page 142 Mechanical Parts List— Type 323 (cont) FIG. 1 MECHANICAL PARTS i j y . « Index Tektronix S erial/M odel No. Description Part No. Eff____________ Disc______ Y i z 3 4 ______________________ HOLDER, Tip jack 1-130 352-0132-00 mounting hardware: {not included w/holder) SCREW, thread forming, 4-40 x '/* inch, 100°...
  • Page 143 Mechanical Parts List— Type 323 (cont) FIG. 1 MECHANICAL PARTS Fig. & S erial/M odel No. Index Part No. Description Tektronix Disc 1 2 3 4 5 1-158 105-0062-01 300000 300579 CATCH, friction CATCH, friction 105-0062-02 300580 mounting hardware: (not included w/catch) -159 210-0948-00 WASHER, flat, 0.166 ID x 0.216 inch OD...
  • Page 144 Mechanical Parts List— Type 323 FIG. 1 MECHANICAL PARTS (cont) Fig. & Index Tektronix S erial/M odel No. Description Part No. Disc _____________________________________ 1-188 131-0106-00 CONNECTOR, coaxial, 1 contact, BNC (with hardware) mounting hardware: (not included w/connector) -18? 210-0255-00 LUG, solder, % inch...
  • Page 145 Mechanical Parts List— Type 323 FIG. 2 CABINET Fig. & Index Tektronix S erial/M odel No. Description Part No. Disc 1 2 3 4 5 390-0026-00 CABINET 386-1315-01 SUB-PANEL, rear, outer 386-1318-00 PANEL, rear 348-0138-00 FOOT 367-0084-00 HANDLE handle includes:...
  • Page 146 DIAGRAMS SECTION 9 The following symbols are used on the diagrams: Screwdriver adjustment Externally accessible control or con­ nector. Clockwise control rotation in direc­ tion of arrow. Refer to indicated diagram. Connection to circuit board made with pin connector. Blue line encloses components lo­ cated on circuit board.
  • Page 147 MRI4 T Y P E 3 2 3 O S C I L L O S C O P E B L O C K D I A G R A M...
  • Page 148 The w aveform s are reproductions o f photographs o bta in ed w ith a Tektronix C l 2 Cam era System and Projected G raticule installed on an oscilloscope w ith a 7 M Hz vertical b a n d w id th , 1 m V /d ivisio n sensitivity, and an in p u t im pedance o f 1 in p a ra lle l w ith 20 pF.
  • Page 149 .0 2V/D1V SOME. (N6TRUHIK1T5 HAVE. A 3EUECTE.D CAPACITOR WITH A VALUE- OF B E T W E E N AKJD 2 0 PF COW W LtTtO FROM THE- R a O - R S \ JUNC.TIOW TO THE. R 8 3 ' R 8 4 JU N C TIO N SEE PARTS LIST FOR EARLIER VALUES AN D SERIAL NUMBER...
  • Page 150 WAVEFORM comparisons should be m ade under the fo llo w in g conditions except as noted on in d ivid u a l schematics: Diagram Number Equipment Setup 1, 2 Type 323 O scilloscope V o lta g e A n y Source VO LTS/DIV...
  • Page 151 I • PARTIAL MAIN BOARD SEE PARTS LIST FOR SEMICONDUCTOR TYPES REFERENCE DIAG R A M S: VOLTA.GE AND WAVEFORM INSTRUCTIONS APPEAR AT <£> VERTICAL PREAMP THE LEFT OF DIAGRAM <§> TRIGGER GENERATOR <j> SWEEP GENERATOR M RK4 T Y P E 3 2 3 O S C I L L O S C O P E V E R T I C A L...
  • Page 152 Equipment Setup Diagram Number Type 323 Oscilloscope Power Regulator circuit board swung out o f com partm ent fo r access. See M aintenance section fo r instructions. Power 7.5 V EXT DC Source (AC or i n t e r n a l b a t t e r y p o w e r m ay be used, but...
  • Page 153 ZV/DIV PARTIAL. MAIN BOARD VOLTAGE AND WAVEFORM <2> VERTICAL OUTPUT AMPLIFIER SEE pARTS U ST p0R IN S T R U C T IO N S A P PEAR AT <$> SWEEP GENERATOR SEMICONDUCTOR TYPES TH E L E F T OF DIAGRAM ,/£>...
  • Page 154 TRIGGER. UNBLANKIUG TO Pm 9, CRT — SV TO FRONT PAN EL GK1D F R O M POWER SUPPLY BOARD ^ PARTIAL MAIN BOARD - SEE PARTS LI ST FOR SEMICONDUCTOR TYPES reference d ia g r a m s SEE PARTS LIST FOR EARLIER VALUES AN D SERIAL NUMBER <2>...
  • Page 155 • 3W3S5 --- I - -- — t—{ T I M E / D I V | — |— !----------------------------------------------------------- 1 "1 IF$ R 3F$P 2 F £ R £ R26>4 <!> Fit \ —o*-o C270A- C 3 4 0 A IX/F /W F * "...
  • Page 156 TO HORIZONTAL DEFLECTION PLATES 3> SEE PARTS LIST FOR SEMICONDUCTOR TYPES REFERENCE DIAGRAMS: TRIGGER GENERATOR SWEEP GENERATOR TIMING SWITCH POWER REGULATOR 4. CRT V O L T A G E AND W A V E F O R M INSTRUCTIONS APPEAR AT TM E L E F T OP D IAG R AM IZG7 O S C I L...
  • Page 157 B L O C K DIAGRAM...
  • Page 159 IO Q V /D IV SWSOI P A R T IA L POWER REGULATOR BOARD REFERENCE DIAGRAMS! <^> VERTICAL OUTPUT AM PLIFIER VOLTAGE. AND WAVEFORM SEE PARTS LIST FOR EARLIER SEE P A R TS L IS T FOR <J> SWEEP GENERATOR VALUES AN D SERIAL NUMBER INSTRUCTIONS APPEAR AT S EM IC O N D UC TO R TY P E S...
  • Page 160 *< 0 > t/> O ’O ’ o < 8 > > "0 < O ’ °>r < r» > ■ o £ -< 7 J > > 5 <g ■ U T J £ £ ■ u O ’ = O ’...
  • Page 161 TYPE 323 OSCILLOSCOPE...
  • Page 162 TYPE 323 OSCILLOSCOPE...
  • Page 163 FIG. 2 CABINET...
  • Page 164 OPTIONAL ACCESSORIES 016-0119-00 POWER PACK 016-0112-00 COVER, protective, oscilloscope...
  • Page 165 FIG. 3 STANDARD ACCESSORIES Fig. & Tektronix S erial/M odel No. Index Description Part No. Disc 016-0247-01 VIEWING HOOD CABLE ASSEMBLY, power, 6 foot 161-0043-00 PROBE PACKAGE, P6049 010-0223-00 COVER, panel 200-0812-00 ADAPTER, 3 to 2 wire 103-0013-00 FILTER, light, smoke gray...
  • Page 166 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 167 Page 1 of 2 TYPE 323 TEXT CORRECTION Section 4 Maintenance Page 4-4 ADD: the following information at the end of page 4-4: Battery Troubleshooting. Before troubleshooting the battery, determine that the problem is actually in the battery. The Master Troubleshooting Chart (Fig.
  • Page 168 Page 2 of 2 TYPE 323 The charger and LOW BATT lamp circuit can be checked by first checking the resistance of R615 and then performing Steps land 9 of the Calibration Procedure. If circuit-drain and the charger have been exonerated as the source of trouble by the preceding checks, the battery can be assumed to be at fault.
  • Page 169 TYPE 323 TEXT CORRECTIONS Section 1 Specification Page 1-2 VERTICAL DEFLECTION SYSTEM CHANGE: portions of Step Response to read: Step Response Aberrations at .01 VOLTS/DIV Peak aberrations not to exceed VARIABLE VOLTS/DIV +27o or -27,; total peak-to-peak control set to CAL aberrations not to exceed 3 7 , (-15°C to +55°C).
  • Page 170 TYPE 323 ELECTRICAL PARTS LIST CORRECTION CHANGE TO: 136-0140-01 Jack tip J350 136-0140-01 Jack tip POWER PACK J611 136-0139-01 Jack tip J612 136-0140-01 Jack tip S15,238/769...

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