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vaSYMBOLSAs Marked on Equipment/1 oeNcER - High voltase.O trorective ground (earth) terminal.Power SourceThis product is intended to operate from a po
Table 7 (cont)CATHODE.RAY TUBE@Display Area8x10 cm.Geometry 0.1 division or less of tilt or bowing.Trace Rotation Range Adequate to align trace with
Table 7 (cont)Performance RequirementsDc Voltage (cont)Rejection RatioNormal ModeAt least 60 dB at 50 and 60 Hz.Common ModeAt least 100 dB at dc; 80 d
Table 7 (contl200O and2 kS) RangesWithin O.25Yo, tl count, + Proberesistance.20 kS),200 kO, and 2 MORangesWithin 0.25o/o, +1 count.20 MO RanseWithin O
Table 7 (cont)Supplemental lnformationDM44 (contlApproximate current supplied tounknown resistanceOHMS RANGE CURRENT200Qand2kO 1mA20kO 100pA200 kO 10
Table 7 (cont)DM44 (cont)Characteristics1/TIMEAccuracy+15o C to +35o C-1bo C to +b5o CGharacteristicsTemperatureOperatingStorageAltitudeOperatingSuppl
CharacteristicsHumidity (Operating and Storage)(Operating)Shock (Operating and Nonoperating)CharacteristicsWeightWith Panel Cover, Accessories, andAcc
CharacteristicsDomestic Shipping WeightExport Shipping WeightHeightWith Feet and PouchWithout PouchWidthWith HandleWithout HandleDepthlncluding Panel
STANDARD ACCESSORIES2 Probes, lOX,2 m, with accessories1 Accessory Pouch, Snap {w/o DM)1 Accessory Pouch (DM)1 Accessory Pouch, Zipper1 Operator'
OPTIONSYour4658maybeequippedwithoneormoreinstrumentoptions.Abriefdescriptionofeachoptionisgiveninthefollowing discussion. unique .no .or" a"
oPTroN 07Option 07 permits operation of the instrument on either12 or 24 Ydc with no performance deterioration. Circuitryis provided to protect again
vil@Use the Proper Power CordUse only the power cord and connector specified for your product.Use only a power cord that is in good condition.Refer co
oPTloN 05TV SYNC SEPARATORThe information and instructions presented in this part apply only to use of the 4658 Option 05 instrument inTV applications
SPECIFICATIONElectrical characteristics and performance requirementslisted in the Specification section of this manual areapplicable to the 4658 Opti
OPTION 05 ACCESSORIESGraticule, NTSC (CCIR System M): -40 to +100 units,with 7.5-unit setup line; horizontal divisions along line0. Tektronix Part Num
Operation of the Sync SeparatorTo trigger the 4658 on a video signal, perform thefollowing three steps:1. Set the A TRIGGER COUPLING switch to either
Triggering the SweepThe output of the Sync Separator is fed directly to theA Sweep Trigger circuit; all that is required for triggering isthe proper s
It is not necessary to display Channel 1 or Channel 2 toobtain CH 1 or CH 2 triggering. Whenever the AC-GND-DCswitch for the channel is not in GND, th
Selecting an lndividual LineNOTEFor fietd and line identification systems, refer totdentifying Fields, Frames, & Lines in 525/60 and625/50 TV Syst
Special MeasurementsOVERSCANNED DISPLAYS. For various video mea-surements, it may be desirable to magnify the video wave-form vertically beyond the li
CCIR System B and Similar 625150 Systems(including PAL)ln most 625-line, 50 Hz field-rate systems, identifica-tion of parts of the picture relies prim
SPECIFICATIONElectrical characteristics and performance requirementslisted in the Specification section of this manual areapplicable to the 4658 Opti
2?56-334658 Oscilloscope with DM44 Digital Multimeter.4658/DM44 OPeratorsvilrREV A AUG 1979
OPTIONAL ACCESSORY11OG BATTERY PACK. This unit permits freedom tooperate the Tektronix 4658 Option 07 oscilloscope atremote locations or when isolatio
NOTES|-:Ir-IIiIlII
NOTES.-I\iiItI---lIi-I-tIi
The Tektronix 4658 Oscilloscope is a dual-channel,four-trace portable instrument, providing traces for twoinput channels, a trigger view from an exter
Refer to the Safety Summary in the front of this manualfor power source, grounding, and other safety considera-tions pertaining to use of the instrume
REGULATING RANGE SELECTIONThe Regulating Range Selector assembly located on therear panel contains the Regulating Range Selector Bar andthe line fuse
CONTROLS, CONNECTORS, AND INDICATORSVERTICALRefer to Figure 2 for location of items 1 through 1 1.@uotts/DlV Switches-Select the vertical deflectionfa
ffiHGND position-The input of the vertical amplifieris grounded to provide a ground reference and toallow the input coupling capacitor to precharge.DC
CH 1-Displays Channel 1 signals when pushbutton is pressed in.A TRIG VIEW-Displays the A external triggerinput signal when push button is pressed in a
ffi,tr Ho__--a};vorrgou \,,-..----.. \/A\\((@))\V/*Lr*E'EM tlnffitroo?trE-ffio?l*'@cH2o/A\@,H@6PoJIFlOt T: 3$rf,""".=.R&apo
BEFORE READING- THT.MANUALRE'RTNTEDMAR.H.,esoPLEASE CHECK FOR CHANG E INFORMATIONAT THE REAR OF THIS MANUAL.
with B INTENSITY control on B sweep crt displays. 60-) lnput connectors-Two banana iacks provide coM- (blackl and + (red) inputs for dc voltage and re
RANGE-Pushbutton switches select from 0.2 voltsto 1.2 kilovolts dc in five ranges or from 200 ohms to20 megohms in six ranges.FUNCTION-Five pushbutto
TRIGGER(BOTH A AND B lF APPLICABLE)Refer to Figure 4 for location of items 27 through 35.TRIG MODE Switches-Three push button switchesdetermine the mo
READY lndicator-LED illuminates to indicate thatA Sweep is "armed" and will present a single-sweepdisplay upon receipt of an adequate trigge
SLOPE Switch-Selects the slope of the signal thattriggers the sweeP.+: Sweep can be triggered from the positive-goingportion of a trigger signal.-i Sw
EXT/l0 (n Trigger Circuit Only)-Externaltrigger signal is attentuated by a factor of 10.STARTS AFTER DELAY (e Trigger CircuitOnly)-B Sweep starts imme
switch (pull out and rotate to unlock) selects thesweep rate for the B Sweep circuit for: delayed sweepoperation only. VAR control must be in the cali
@n*tq@nr hG TltE DlV I;;,ffix lxK@)- xtr i**-- *o ^rnGGEnrrrfl lq ils rur:t-R l-El Fl* f-* ---T-.iHrM-ffiLlr,@l-,il-6,ffl@av lv'.* lllr*uDEL
A-Horizontal deflection is provided by A Sweepat a sweep rate determined by the setting of the ATIME/DlV switch. Only A Sweep is displayed; BSweep is
@Figure 7. Rear panel and left side panel controls, @nnectors, and indicators.4658/DM44 Operators17
RronixCOMM.IrTED TO EXCELLENCETektronix, lnc.P.O. Box 500Beaverton, Oregon070-2756-00INSTtrlUCTIONMANUALFirst Printins, MAR L97997077Serial Number
Regulating Range Selector Bar-Selects the regulatingrange of the 4658 power supplies to match theavailable power input source. lt is shown on Figure 7
BASIC OSCI LLOSCOPE DISPLAYSPRELIMINARYThe procedures in this section will allow you to set upand operate your instrument to obtain the most commonlyu
PRESET INSTRUMENT CONTROLSPreset the instrument controls as follows:VERTICAL HORIZONTALVERT MODE CH 1 TIME/DIV Switches Locked together at 1 msvoLTs/D
1. Preset instrument controls and pull the POWERswitch (onl. After allowing the instrument to warmup connect a signal to the CH 1 input connector.NOT
MAGNIFIED SWEEP DISPLAY1. preset instrument controls and obtain a Normal center vertical graticule line). Change the TIME/DIVSweep Display. switch se
4.5.6.1.2.Adjust the DELAY TIME POSITION control to movethe intensified zone to cover the por:tion of the dis'play that will be displayed in dela
4. The start of B Sweep may be changed by adjustingthe DELAY TIME POSITION control.5. lf the instrument is equipped with a DM44 and a timedifference (
SINGLE SWEEP DISPLAY1, Prsset instrument controls and obtain a Normal 3. When the sweep is complete, the circuit is "lockedSw€ep Display. For r
DM44 DISPLAYS AND MEASUREMENTSExcept for the TIME and 1/TIME functions, the DM44 under the subsection titled DM44 Delayed Sweep Timeis independently u
RESISTANCEINPUTOHMS FUNCTION SELECTORRANGE SELECTION(465/DM-O-2 )2039-9Figure 8. Resistan@ maasurement.4658/DM44 Operators@27
WARRANTYTektronix warrants that this product is free from defects inmaterials and workmanship. The warranty period is one (1) yearfrom the date of sh
Table 3Resistancr RangesThe maximum sfe input voltage is !1200 volts (dc +peak ac) between the + and COM inputs or betweenthe + input and chasis.The
,#$VOLTAGEINPUTREFERENCE...;;:VOLTS FUNCTION SE LECTOR(465/DM-O-3)2039-10RANGE SELECTION@Figure 9. Volts measurement.4658/DM44 (iperators29
3. Observe the readout. Press the next lower-valueRANGE push buttons as necessary to obtain a properreadout (see Table 4).NOTEtf no voltage is applied
TEMPERATURE FUNCTIONSELECTOR2756-tOFigure 10. Temperature measuroment.4658/DM44 Operators@31
TEM PERATURE ACCURACY CHECKSThe DM44 is calibrated to its original temperatureprobe and should be recalibrated to any replacement probe.Refer to the D
@Table 5Tempe ratu re ConversionCENTIGRADEFAHRENHEITCENTIGRADEFAHRENHEITCENTIGRADEFAHRENHEITCENTIGRADEFAHRENHEIT1738-35-50130100-1010 2040100 11090190
ADJUSTMENTS AND MEASUREMENTSThis .section provides the procedures and informationyou will need to make precision measurements with the4658 an.d the DM
SIGNAL CONNECTIONSProbesGenerally. probes offer the most convenient means ofconnecting an input signal to the instrument. They areshielded to prevent
CORRECTFLATOVER COM-PENSATED(OVERSHOOT}UNDER COtvl-PENSATED(ROLLOFF}465Figure 11. Probe eompensation.INPUT COUPLING CAPACITORPRECHARGINGln the GND pos
OPERATOR'S CHECKS AND ADJUSTMENTSTo verify the operation and accuracy of your instrument, perform the following checks and adjustments before m
PageLIST OF ILLUSTRATIONS ivSAFETY SUMMARY YBASIC OSCI LLOSCOPE DISPLAYSPRE LIMINARYPRESET INSTRUMENT CONTROLSNORMAL SWEEP DISPLAYMAGNIF IED SWEEP DI
NOTEAttach a bnc-to-binding post adapter to the A TRIG'GER external input iack. Using a test lead with anattigator ctip at each end, connect one
DM44 TIMING CHECK 5. Usins the DM44 A TIME control, move the time-measurement point to the leading edge of the next1. perform steps r through 5 of the
6.7.Observe the DM44 readout. lt should indicateapproximately 1 .000 ms.Using the A TIME control to position the time-measurement point to each suceed
MAKING PRECISIONMEASUREMENTSAC PEAK-TO-PEAK VOLTAGENOTEEither channel input connector may be used for thesignal input. lJse the VERT MODE switch to se
NOTElf the amplitude measurement is critical or if thetrace is thick as a result of hum and/or noise on thesignal, a more accurate measurement can be
the baseline to the bottom graticule line. lf a negativevoltage is to be measured, position the baseline to thetop graticule line.4. Switch the AC-GN
total deflection factor in the ADD mode is equal to thedeflection factor indicated by either VOLTS/DlV switch(when both VOLTS/DIV switches are set to
1. Multiply 3 divisions by the VOLTS/DlV switchsetting to determine the dc-level value.2. To the Channel 2 input apply a negative dc level (or aposit
1. Connect a line frequency signal to the Channel 2input.2. Set the VERT MODE ALT switch out and theChannel 2 INVERT switch in. Adiust theChannel 2
EXAMPLE: The reference signal amplitude is 30 volts, TIME DURATIONwith a VOLTS/DIV switch setting of 5 and the VARVOLTSiDIV control adjusted to provid
t age Page. ADJUSTMENTS AND MEASUREMENTS (contl ADJUSTMENTS AND MEASUREMENTS (contl,Npur coupL,NG cApAc,roR i,1?!J;#:H'l:).ili:: liif ilf ill. :
3. Measure the horizontal distance between the time- 1. Measure the time duration of one waveform cyclemeasurement points4. Calculate time duration,
1.2.Obtain a Normal Sweep Display (refer to Basic 7.Oscilloscope Displays section of this manual).Set A TRIGGER SLOPE control to *. Use a sweepspeed s
EXAMPLE: The horizontal distance between the 10% frequency signals and ALT is best for high-fre{uencyand 90% points is 5 divisions (see Figure 19) an
Measure the horizontal difference between the twosignals and calculate the time difference using thefollowing formula:TIME/DlV horizontalswitch X dif
5. Measure the horizontal deflection of the unknown Arbitrarysignal in divisions and calculate its time duration Deflection = 1.37 X 50ps/division
CHOP is more suitable for low-frequency signals. Thereference signal should precede the comparison signalin time.4. lt the signals are of opposite
EXAMPLE: The horizontal difference is 0.6 division Substituting the given values:with a sweep rate of 4s"/division as shown in Figure 21. phase D
PULSE JITTERPulse jitter is displayed as the slight horizontal move-ment of a pulse and includes the inherent jitter of thedelayed sweep.1. Obtain a N
the Xl0 MAG switch. The sweep rate of the delayed sweep(B Sweep) is not actually increased. The apparent magni-fication is the result of delaying the
Time measurement can be made from the B Sweepdisplay in the conventional manner. The sweep rate isdetermined by the setting of the B TIME/DlV switch.T
SPECI FICATIONVERTICAL SYSTEMTRIGGER SYSTEMHOR IZONTAL DEF LECTION SYSTEMCALIBRATORZ-AXIS INPUTSIGNAL OUTPUTSPOWER SOURCECATHODE.RAY TUBEDM44ACCESSOR
ranses. Operatins the B Sweep in a trissered mode provides BASIC 4658 DELAYED SWEEP TiMEa more stable display, since the delayed display is triggered
3. Use the DELAY TIME POSITION control to movethe start of the intensified zone so that it iust touchesthe intersection of the signal and the center h
Frequency (Basic 4658) 2. Set the VOLTS/DIV switch and VAR control (orrhe rrequency or a recurrent sisnar is determined by :llffil il:l[:i;t lt€n exac
4. Set the A TIME/DlV switch for a single-event display,with the rise time spread horizontally as much aspossible. Horizontally position the display s
3.STARTS AFTER DELAY. For the most accuratemeasurement, set the B TIME/DIV switch to thefastest sweep that provides usable (visible) intensifiedzones.
Time Difference Between Two Time-Related Pulses(Basic 4658)1. Obtain a Normal Sweep Display (refer to BasicOscilloscope Displays section of this manua
pulse and adjust until the rising portion is centered atsome vertical graticule line (see Figure 29, Point A).7. Record the DELAY TIME POSITION contro
Table 6DM44 Delayed Sweep Displaysaln the B DLY'D mode, the intensifie{ zones (that are displayed in the A INTEN model will be displayed at tho B
Table 6 (contlbYour irutrument ruy b. modifi.d to m.L. th. DELAY TIME POSITION.nd A TIME co.rtrol. op.t t ind.p.n&nlly. Th. in.truction. fotlna
DM44FUNCTIONHOR IZDISPLAYVERTMODEDISPLAY OBTAINEDTIMEor1 /TIM E(cont)ALT(cont)CH 1 andCH 2 andCHOPA INTEN traces for both Channel 1 and Channel 2,eac
LIST OF ILLUSTRATIONSPageRegulating range selection and line fuse.Vertical controls, connectors, and indicators. . .Display, calibrator, and DM44 con
Time Duration Using DM44Obtain a Delayed Sweep Display, with controls set asfollows:DM44 FUNCTION TIMEHOR IZ D ISPLAY ALTB (DLY'D) TRIGGERSOURCE
3. Slightly readjust the Athe waveforms onFigure 30).TIME control to superimposethe B Sweep display (seeA blinking displayThis will occurNOTEindicates
1. Set the A TIME/DlV switch to a setting that displaysall of the rising edge of the waveform.2. Adjust the VOLTS/DlV and VAR VOLTS/DlVcontrols to dis
VAR TIME/DIVA TIME/DIVB TIME/DIVDM44 A TIME1. Position the two traces approximately as shown inFigure 32.2. Using the DELAY TIME POSITION control, mov
7. To determine the pulse repetition rate, depress theDM44 1/TIME FUNCTION push button and read thepulse repetition rate on the Readout.Time Differenc
4. Adiust the DELAY TIME POSITION control to movethe reference point to desired spot on the reference 7' observe the leading edse of the B su&ap
The following electrical characteristics (Table 7l arevalid only if the instrument has been calibrated at anambient temperature between +2Oo C and +30
Table 7 (contlSupplemental lnformationVERTICAL SYSTEM (contlLow-Frequency Li nearity0.1 division or less compression orexpansion of a 2-division sig
CharacteristicsStep ResponseRise Time (O' C to +40" ClPositive-Going Step(Excluding ADD Mode)Aberrations (go C to +40" C)Position Effe
CharacteristicsCommon-Mode Reiection Ratio(ADD Mode with Channe! 2lnverted)Trace Shift as VAR VOLTS/DIVis Rotatedlnverted Trace Shiftlnput Gate Curren
The general safety informationcautions will be found throughoutSAFETY SUMMARYin this summary is for operating personnel. Specific warnings andthe manu
Table 7 (contlVERTICAL SYSTEM (contllnput R and (Resistance1 MO.within 2%.CapacitanceApproximately 20 pF.Within 3%.R and C Product(+2oo c to +30o C)Ab
CharacteristicsTable 7 (contlTRIGGER SYSTEMSupplemental I nformationSensitivityAC Coupled Signal0.3 divisions internal or 50 mVexternal from 30 Hz to
Table 7 (contlTRIGGER SYSTEM (cont)External Trigger lnPutsMaximum lnput Voltage250 V (dc + peak ac).250 V (p-p ac at 1 kHz or less).lnput Resistance1
Table 7 (contlCharacteristicsTrisger View (A TRIGGER) (cont)Delay DifferenceCentering of Trigger PointFlatness and AberrationsSweep RateCalibrated Ran
Table 7 (contlHORIZONTAL DEFLECTION SYSTEM (conSweep Rate (cont)B Sweep50 ms per division to 0.02 ps perdivision in 20 steps in a 1-2-5sequence. X10
CharacteristicsTable 7 (contlHOR IZONTAL DEFLECTION SYSTEM (contlSupplemental lnformationSweep Length (A Only)10.5 to 1 1.5 divisions.A Trigger Holdo
Table 7 (contlCharacteristicsSupplemental lnformationHORIZONTAL DEF LECTION SYSTEM (contlDelay Time JitterOne part (or less) in 50,000 (0.002%lof ten
CharacteristicsOutput Voltage (-15o C to +55o C)Repetition RateOutput ResistanceSupplemental I nformation0.3 V, within 1.5Yo.within 250/o.Table 7 (co
Table 7 (contlSupplemental lnformation30 mA, within 2%.+2Oo C to +30o C-1bo c to +sbo cSensitivityUsable Frequency RangeMaximum lnput VoltageLIBRATOR3
Table 7 (contlSupplemental I nformationPOWER SOURCELine Voltage Ranges1 15 V Nominal(Low)99 V to 121 V.{Medium)104 V to 126 V.(High)108 V to 132 V.230
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