Tektronix 570 Manual Download Page 125

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CALIBRATION

2 5.

PEAK VQLTS

HORIZONTAL

PLATE

HORIZONTAL VOLTS/DIV

SERIES LOAD

300

PEAK VOLTS

Check PEAK VOLTS as follows:

deflection
major div

PEAK VOLTS

VOLTS/DIV

approx

100

200

300

500

26..

PLATE SWEEP AND TRANS CURRENT
BALANCE

Setup

STEPS/FAMILY
HORIZONTAL VOLTS/DIV
VERTJCAL

VER TICAL MA/DIV
P EAK VOLTS
SERIES LOAD

full cw
50
PLATE

.02

500

1 M

C315, C316, P late Sweep C311, Plate Trans

C315

Try all 'the following combinations and adjustments

to find minimum trace width:

Connect  ungrounded  side  of C315 of either terminal
5  or  7 of T31O. Ceramic capacitor C316 may  be  con
nected  from  gnd  to  either  terminal S  or  7 of  T310
or removed.

Adjust Plate Sweep C311 and Plate Trans C315 for
minimum trace width.

TEK 570 FCP

2-5-64

NOTES

25b. C3l5 location

(1)

Underneath scope at right front.

25b. Temporary connections

(1)

Use  insulated  alligator  clips  to make  tempo
rary  connections.  Adjust caps and  make final
location  selections.

Plate Sweep, Plate Trans

Grid C502

26a.

Screen C509

570 CALIBRATION

Summary of Contents for 570

Page 1: ...ebsite of Cornell Law School at http www4 law cornell edu uscode 17 107 html and is here reproduced below Sec 107 Limitations on exclusive rights Fair Use Notwithstanding the provisions of sections 106 and 106A the fair use of a copyrighted work includ ing such use by reproduction in copies or phono records or by any other means specified by that section for purposes such as criticism comment news...

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Page 3: ...ositioning of the display Vertical Axis Concentric controls provide for se lection of plate screen or grid current display and se lection of any one of eleven current per division values 0 02 0 05 0 1 0 2 0 5 1 2 5 10 20 and 50 ma div A graticule divides the screen into ten vertical divisions Calibration accuracy is within 3 10 permitting accurate current readings directly from the screen Horizont...

Page 4: ...egative de voltage is available continuously vari able from 0 to 100 v The negative dc supply is cap able of delivering up to 1 watt ADAPTER PLATES Eight quick changing adapter plates are furnished with the Type 570 2 with octal sockets 2 with nine pin miniature sockets 2 with seven pin miniature sockets and 2 with pilot holes only Plate receptacle holds any two adopter plates at the same time Sma...

Page 5: ... will be either 100 steps sec or 200 steps sec Cathode Ray Tube The Tektronix crt uses 4 kv accelerating potential A PI phosphor is normally supplied Illuminated Graticule The 10 x 10 division grati cule is edge lighted Illumination of the graticule is controlJed by a front panel knob Mechanical Spec ifications Dimensions are 17 high by 13 Vs 11 wide by 23 Ij 11 deep Net weight is 74 3 pounds Ship...

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Page 7: ...0 v step GENERAL DESCRIPTION The Tektronix Type 570 Characteristic Curve Tracer presents an accurate graphic analysis of vacuum tube characteristics under al m ost any conceivable operating conditions Circuit design can now be tailored to more closely fit the operating charocteristics of available tubes Tubes can be selected faster and more accurately for circuits requiring other than average vacu...

Page 8: ...hing rate of the step generator A 120 or 240 steps sec rate can be selected The extra 120 steps sec position causes switch ing to occur at the opposite end of the characteristic GRID STEP GENERATOR __ R f V Hr 10 curve for convenience when the area of interest is 01 either end of the curves displayed Bias voltage applied to the grid of the tube under test is impressed in a series of steps to produ...

Page 9: ...hin 2 of full scale The voltmeter can be switched to show the per cent of heater voltage indicated by the heater voltage selector switch VOLTMETER _ _ _ _ RANGE DC VOll 0 Ir J D CAllCN I I _ OTHER FEATURES Tube Socket Switching The TEST POSITION switch in the center of the front panel is used to switch in either of two vacuum tubes during comparison tests It has an OFF position for changing tubes ...

Page 10: ...tras PI crt phosphor normally furnished P2 P7 PI optional No extra charge Price f o b Portland Beaverton Oregon Type 570 Characteristic Curve Displays Fig I Plate current plotted against plate voltage for One trio ode section of a 12AU7 Plate load is 5 k peak plate supply voltage is 500 v Grid voltage is e hanged 5 v between curves from 35 v to zero Vertical ensi tivity i 5 m 0 d iv horizontal sen...

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Page 13: ...Tektronix Inc TVPE 5 70 OSCILLOSCOPE WARNING When the POWER TEST switch is ON LETHAL voltages appear on the front test panel of the Type 5 10 S W Millikan Way P O Box 500 Beaverton Oregon 97005 Phone 644 0161 Cables Tektronix 070 359 7 63 ...

Page 14: ... to the field there fore all requests for repairs and replace ment parts should be directed to the Tek tronix Field Office or Representative in your area This procedure will assure you the fastest possible service Please include the instrument Type and Serial number with all requests for parts or service Specifications and price change priv ileges reserved New material copyright 1963 by Tektronix ...

Page 15: ...Section 1 Characteristics I Section 2 Operating Instructions Section 3 CIrcuit section Maintenance 5 Calibration Procedure ...

Page 16: ......

Page 17: ... 16 amp fuse protects the current meas uring resistors in the 02 rna to 1 rna posi tions of the MA DIV switch on instruments above serial number 500 1 Plate Sweep Generator Peak plate sweep voltage Eight steps from 5 to 500 volts Nominal voltages depending on line voltage Series load resistance Eleven steps from 300 ohms to 1 meg ohm Accuracy 300 ohms 30 lk and 2k 10 5k to 1 meg 5 Maximum current ...

Page 18: ...minum alloy chassis and one piece cabinet SN5001 up Construction Aluminum alloy chassis and three piece cabinet Finish SNlOl 5214 Photo etched anodized front panel with blue wrinkle cabinet SN5 215 up Photo etched anodized front panel with blue vinyl c abinet Dimensions 16 1 2 high 13 wide 24 1 2 deep Weight 75 pounds Power Requirements 105 125 or 210 250v 50 60 cycles 300 to 500 watts at 1 17 or ...

Page 19: ... power to the patch panel Damage to other circuits is possible by extended periods of heavy overload In no case is any provision made to protect the vacuum tube or other device being tested PRELIMINARY INSTRUCTIONS Cooling High voltages can be present at the patch panel The flexible operational s etup facility of the Type 570 re quires that potentially dangerous voltages be available at the patch ...

Page 20: ...O connects voltmeter to 0 OC or HTR supplies for under test ADJUST Ad de level of srair VOLTS STEP adjusts amplitude of steps from Generator SINGLE FAMILY When STEPS FAMILY control is clockwise displays single family of curves t then holds grid negative TEST POSITION Selects either of 2 devices under test or removes grid wavefrom in center position POWER TEST Re moves all voltages from test panel ...

Page 21: ...or the power line fuse on oscillo s copes above serial number 5001 is on the rear panel of the instrument adjacent to the fuse holder On instruments below serial number 5001 see the parts list in this manual F use data for the Plate Sweep Generator 1 2 AMP and Vertical Amplifier 1 1 6 AMP fuses is found near the fuse holders On instruments with serial numbers of 5000 or below the fusees will be fo...

Page 22: ... of the first curve reset the following controls PEAK VOLTS 20 VERTICAL MA DIV 1 HORIZONTAL 2 VOLTS DIV You will notice that the curves are not plotted all the way to the origin and that the curves intersect the current axis above the origin These are normal effects and do not indicate miscalibration of the instrument The correct horizontal positioning can be determined by momentarily grounding th...

Page 23: ...he STEPS SEC control provides a means of selecting the stepping point of the step generator In the right hand pOSition labeled 1 20 the generator steps while the plate volt age is at maximum and in the left hand position the generator steps when the plate voltage is at a minimum In the 240 pOsition stepping occurs at both maximum and minimum voltage points and the faster switching rate reduces fli...

Page 24: ...DI E p V 1 1 7 fI J 1 1 V Ep Il Eg IIpl J I J Ep rp T 1Egi 7 V 6 Fig 2 5 Plate Current vs Plate Voltage curve for the triode section of a 6US Grid Current vs Plate Voltage the PLATE SCREEN GRID Control to GRID Grid current can be plotted against plate voltage by s etting the controls as for the plate c urrent versus plate voltage display and moving Increase the vertical sensitivity with the VERT 1...

Page 25: ...tended that the calibration ofthe PEAK VOLTS Control be exact If the actual peak plate 2 1 8 1 6 1 4 1 2 1 8 I I I l I J V V V V V f 1 l r r l e 2 MA D IV 2 VOLTS DiV E g I l 6 4 2 OEg Control Settings for Triode section of a 6U8 PEAK VOLTS SERIES LOAD STEPS SEC VOLTS STEP START ADJUST PLATE GRID PLATE SCREEN GRID MA DiV VOLTS DiV 200 10k 240 2 o GRID PLATE 2 2 Fig 2 7 Plate Current vs Grid Voltag...

Page 26: ...rposes or to speed testing The one grid should be connected to the G RID A connector and the other grid to GRID B connector Both plates should be connected to the P connector The tube to be tested is now selected by the TEST POSITION switch The other tube is held cutoff by a 10 megohm resistor connected to 300 volts Occasionally a defective tube will still conduct under these conditions causing an...

Page 27: ...s represent the variation of screen current as the plate voltage is swept from zero to maximum 05 5 35 55 75 95 o Egl j 05 25 5 65 5 l I II I I I I 1 MA DIV 1 VOLTS DIV Egi Control Settings for Pentode section of a 6U8 PEAK VOLTS SERIES LOAD STEPS SEC VOLTS STEP START ADJUST PLATE GRID PLATE SCREEN GRID MA DIV VOLTS DIV DC DC VARIABLE 200 10k 240 1 full clockwise GRID PLATE 1 1 50 Set for 45 volts...

Page 28: ...f a few seconds are allowed between each presentation for the circuits to recover The DC connection will deliver 500 rna for a single family with 1 I g J I I 5 MA DlV 1 I IA 0 Eg I I1Ri V I 1 I l t 2 I _t 20 VOLTS DlV Ep Control Settings for Pel1tode section of a 6U8 PEAK VOLTS 200 SERIES LOAD 10k STEPS SEC 240 VOLTS STEP 1 START ADJUST 0 PLATE GRID PLATE PLATE SCREEN GRID SCREEN MA DIV 5 VOLTS Dl...

Page 29: ...nc e in this way you can obtain the firing potential and voltage drop of a voltage reference tube Other special applications may occur to you from time to time Be sure to check the current requirements of a special circuit The Grid Step Generator Plate Sweep Generator and DC circuit are designed for electron flow from ground into the circuit only A certain amount of current can be drawn from these...

Page 30: ...re connected in parallel For this reason parasitic oscillation suppression resistors have been built into special patch cords and ferramic beads have been installed on the leads running from the tube socket on the adapter panels Usually the resistors in the patch cords will prevent any oscillation ifthey are connected to the control grid of the tube under test If the special patch cords are used t...

Page 31: ...GRID Control The SERIES LOAD Control selects the series resistance for the P late Sweep Generator Horizontal Amplifier The PLATE GRID Control connects the grid o r plate of the device under test to the Horizontal Amplifier The Horizontal Amplifier amplifies the signal and converts it for push pull appli c ation to the deflection plates Vertical Amplifier The Vertical Amplifier amplifies the signal...

Page 32: ...s so that V65A is conducting and V6SB is cut off The grid of V65A begins to go negative immediately as C90 loses the charge it received and the Multivibrator returns to its quiescent condition The result is a short positive pulse at the plate of V65B In the quiescent condition the Step Generator tube V86 is cut off Its grid is held negative as a result of current flow through V95 V76B and cathode ...

Page 33: ...and thus the gain of the Step Amplifier is seven fixed steps This determines the grid voltage change between the curves in the display Grid Current Measurement In order to measure grid current in the device being tested the grid current must flow through the current measuring circuits Any current used to operate the Step Amplifier must be kept separate To do this the Output Cathode Follower is sup...

Page 34: ...uator resistors were grounded current drawn by this resistor would pass through the current measuring resistors of the Vertical Amplifier To avoid this a section of the P L ATE GRID selector connects the ground return back to appropriate places on the PLA TE S C REEN GRID selector V E RTICAL AMPLI FIER D IAGRAM MA DIV Switch The MA DIV switch selects the resistance to ground in the current measuri...

Page 35: ... the reference voltage for the 1 50 volt supply This reference voltage is applied to the cathode of a Comparator Tube V4 10 and is compared with the voltage on a divider connected between the I SO volt bus and ground R41 3 labeled 1 50 ADJ determines the percentage of voltage that appears at the grid of V410 and thereby de termines the total voltage across the divider Any variation from the normal...

Page 36: ...r Tubes The voltage at a tap on the divider between the output ofthe Series Regulator and the reference voltage are compared with ground potential The amplified error signal at the plate of V525B is applied to the grid of the S eries Regulator Tube V515 B515 and B 5 1 6 r educes the dc level of signal at this grid without attenuation of the signal The DC switch changes the divider ratio in the div...

Page 37: ...every three or four months with a few drops of light machine oil F ailure to lubricate the b earings periodically will cause the fan to s low down or stoP thereby causing the instru m ent to overheat Visual Inspection You should visually inspect the entireosciUo s cope every few months for possible circuit defects These defects may include such things as loose or broken connections damaged banana ...

Page 38: ...t in soldering t o a ceramic s t rip 4 Apply one corner of the tip to the notch where you wish to solder see Fig 4 2 5 Apply only enough heat to make the solder flow freely 6 Do not attempt to fill the notch on the strip with solder instead apply only enough solder to cover the wires adequately and to form a s light fillet on the wire as shown in Figure 4 3 Fig 4 3 A slight fillet o f solder i s f...

Page 39: ...ave been used in Tektronix instruments The earlier type mounted on the chassis by means of 2 5 6 bolts and nuts The later type is mounted with snap in plastic fittings Both styles are shown in Fig 4 7 2 56 AP NFITT I N GS F i g 4 7 Two types of ceramic strip mountings To replace ceramic strips which bolt to the chassis screw a 2 56 nut into each mounting bolt positioning the bolt so that the dista...

Page 40: ...ending one is discovered Although your Type 570 Oscilloscope is a complex instrument it can be conveniently divided into basic circuits as shown on the B lock Diagram The first circuits to check for practically any type of trouble are the low voltage power supplies Proper operation of every circuit in the Type 570 Oscilloscope depends on proper operation of the regulated and unregulated power supp...

Page 41: ...ive positions of the MA DIV switch If this appears only in the PLATE position of the PLATE SCREEN GRID selector the most likely tubes are V3I5 and V3I6 in the Plate Sweep Generator If it appears only in the G RID position of the PLATE SCREEN GRID NOTE After servicing the Type 570 O s cilloscope it is important to check its calibration For this refer to the Calibration Procedure s ection of this ma...

Page 42: ...NOTES ...

Page 43: ...justments in these circuits usually cannot be made When amplifier adJust ments are required the entire amplifier should be calibrated In addition if either the 150 volt supply or the high voltage power supply is adjusted the entire instrument must be c alibrated If you find that a circuit is out of calibration but you are not aware of which particular adjustment will correct the difficulty it is u...

Page 44: ... output of 1 17 volts or 234 volts Allow the instrument to warm up for several minutes before proceeding w ith the calibration adjustments During cal ibration periodically check the input voltage to the instrument and adjust the autotransformer as necessary to maintain the voltage at 1 17 o r 234 volts except when the power supply r egulation is being checked NOMINAL RESISTANCES OF POWER SUPPLIES ...

Page 45: ...e ripple voltage at the output of each power supply when the autotransformer is adjusted for 1 17 volts Swing the autotransformer output voltage from 105 volts to 1 25 volts while observing the amount of ripple It should remain about the same amplitude from low line to high line voltage Return the line voltage to 117 volts 2 H V Adjustment While the Type 570 Oscilloscope is still in a position for...

Page 46: ...wise and m ake sure that the voltage output of the DC connector goes from 0 to 100 volts 5 Grid A Grid B and 1 50 27 k Connector check Connect the voltmeter between the GRID A connector and ground the voltmeter should read approximately 108 volts Now move the TEST POS ITION switch to GRID B The volt meter should still read 108 volts Remove the voltmeter lead from the GRID A connector and connect i...

Page 47: ...sition the dots to the bottom full graticule line Switch the INDICATION Control to DC and adjust the V E RT GAIN Control for a deflection of 10 divisions Switch back and forth between the DC and HTR positions of the INDICATION Control to remove interaction in the adjustment Be sure Fig 5 4 The waveform obtained in the 240 position of the STEPsl that the dots are on the bottom graticule line SEC Co...

Page 48: ... you would like to know the start position then do the above procedure and mark the zero on your front panel in pencil or ink 1 3 HOR GAIN Adjustment Turn the PLATE GRID Control to PLATE the VOLTS DIV Control to 10 the MA DIV C ontrol to 50 and the S ERIES LOAD Control to 1 M Adjust the DC Controls for 100 volts out of the DC connector on the test panel as explained earlier in this procedure Conne...

Page 49: ...PLATE G RID Control to PLATE and the VOLTS DIV Control to 1 Position the spot under the far left hand graticule line Now change the j umper from ground to the hot HTR connector on the test panel A horizontal deflection of 8 9 divisions should be obtained When checking through the ranges of the H E ATER Control be sure to maintain the heater voltage at 100 as read on the meter of the Type 570 If th...

Page 50: ... Connections Configuration C315 C316 1 Not connected Connected between terminals 5 and 8 2 Not connected Connected between terminals 7 and 8 3 Not connected Not connected 4 Connected to Not connected terminal 5 5 Connected to Not connected terminal 7 6 Connected to Connected between terminals 5 7 and 8 7 Connected to Connected between terminals 7 5 and 8 2 1 Adjusting GRID C502 and SCREEN C509 Cur...

Page 51: ...TEP ZERO ADJ AA MIN NO CURVES CRT GEOM ADJ PHASE A Fig 5 6 Top view of T pe 570 above serial number 5001 C 3 1 6 T310 VOLTS D1V BAL T401 Fig 5 7 Bottom view of Type 570 Calibration Procedure Type 570 TSOI 5 9 ...

Page 52: ...nstall a Type 6U8 in the socket adapter and turn the POWER TEST switch ON after the proper heater voltage has been set Adjust the following controls of the Type 570 to obtain a normal set of plate current versus plate voltage triode curves PLATE SCREEN GRID PLATE GRID MA DIV VOLTS DIV VOLTS STEP START ADJUST STEPS SEC STEPS F AMILY TEST POSITION HEATER HEATER VARIABLE P E AK VOLTS SERIES LOAD PLAT...

Page 53: ... r P o p e r tubular m o u l d e d Serial n u m b e r T u r n s Toroid T u b u l a r M or m e g I Kilohms or k i l o 1 01 Megohms or mega 1 061 Micro or 1 0 6 v Vcr w Working volts DC Variable m n rl M i l l i or 1 0 N a n o or 1 0 9 Ohm w I WW Wott With Wire wound SPECIAL NOlES AND SYMBOLS XOOO Parr first added at t h i s serial number OOOX Port removed after this serial number 000 000 Asterisk p...

Page 54: ...and to give you the benefit of the latest circuit improvements developed in our engineer ing department It is therefore important when ordering parts to include the fol lowing information in your order Part number including any suffix instrument type serial number and modification number if applicable If a part you have ordered has been replaced with a new or im proved part your local Field Office...

Page 55: ...tf MT C7 281 536 1 000 pf Cer C8 285 51 9 047ftt MT C l O 285 51 9 047 tf MT C35 285 5 1 9 _047 ftf MT C36 281 536 1 000 pf Cer C38 285 51 9 047 itf MT C40 285 5 1 9 047 Itt MT C67 281 506 1 2 pf Cer C73 281 525 470 pf Cer C85 Use 291 038 01 ftf Polystyrene C88 285 5 1 2 01 5 Itf MT C90 285 5 1 9 047 ftf MT C95 283 535 00 1 5 ftf Mica C1 1 2 281 501 4 7 pf Cer C125 285 506 0047 ftf MT C 1 26 285 5...

Page 56: ...5 pf Cer 1 0 pf Cer 2x20 f tf EMC 2x20 tf EMC 01 tf MT 047 tf MT 2x20 tf EMC 01 tf MT 80 tf EMC 01 tf MT 2 x 20 tf EMC 7 45 pf Cer 80 tf EMC 80 tf EMC 7 45 pf Cer 2 x 20 11f EMC 001 tf Disc Type 01 tf MT 047 tf MT 001 tf MT 001 tf MT 001 tf MT 01 tf Disc Type 0068 d PTM 01 tf Disc Type 0068 tf PTM 005 tf Disc Type 0068 f tf PTM 01 tf Disc Type 015 tf PTM 01 tf Disc Type Diodes Germanium T12G Germa...

Page 57: ... 154 1 50 k w R 1 6 302 1 54 150 k w R17 302 106 1 0 meg w R1 8 302 106 10 meg 2 w R25 31 1 026 1 00 k 2 w Var VOLTS STEP ADJ R26 302 1 05 1 meg 2 w R27 302 1 05 1 meg Y2 w R28 Use 306 104 1 00 k 2 w R29 302 103 1 0 k 2 w R35 3 1 1 032 250 k 2 w Var PHASE ADJ B R36 302 102 1 k 2 w 1 01 5169 302 1 05 1 meg Y2 w 5170 up R38 304 1 03 1 0 k 1 w R39 Use 302 1 23 1 2 k 1f2 w R40 304 473 47 k 1 w R45 302...

Page 58: ...w X5026 up R101 302 104 100 k 1 2 w R102 302 224 220 k 2 w Rl05 31 1 034 500 k 2 w Var VOLTS STEP ZERO ADJ R106 302 155 1 5 meg 1 2 w R108 302 1 02 1 k 2 w Rl09 302 153 1 5 k w Rl l O 304 224 220 k 1 w R1 1 l 302 226 22 meg 1 2 w X293 up R1 l 2 302 1 55 1 5 meg 1 2 w R1 1 5 302 1 55 1 5 meg V2 w R1 1 6 302 102 1 k l 2 w R1 l 7 Use 304 474 470 k 1 w R120 3 1 1 026 1 00 k 2 w Var START ADJUST R125 3...

Page 59: ...50 k w Prec 1 R222 309 109 250 k 1 2 W Prec 1 R223 309 003 500 k 1 2 W Prec 1 R224 309 0 1 7 1 5 meg 1f2 w Prec 1 R225 309 025 2 5 meg 1 2 w Prec 1 R226t Selected X5360 up R227 31 1 074 5 k 1 w Var VOLTS DIV CAL R228 302 473 47 k w R229 3 1 1 01 8 20 k 2 w Var HORIZ GAIN ADJ R230 302 333 33 k w 1 01 5264 302 273 27 k 1 2 w 5265 up R232 301 825 8 2 meg 1 2 w 5 R233 302 225 2 2 meg 1 2 w R234it 3 1 ...

Page 60: ...9 053 Use 309 0 1 5 31 1 073 t One half of R234 3 k 1 k 500 n 300 n 1 00 n so n 30 n 1 0 n Replacement Kit 5 n 3 n 2 n 2 x 500 k 2 7 meg 91 0 k 1 meg 1 meg 1 2 meg 22 k 20 k 1 k 47 k 1 k 68 k 68 k 1 k 1 k 1 00 k 100 k 82 k 1 50 k 33 k 22 k 1 5 k 1 5 k 2 k 2 k 3 k 1 0 k 1 0 k 30 k 1 00 k 1 00 k 333 k 1 1 1 meg 250 n Resistors Cont d Description 10 w 5 w 5 w 5 w V2 W 8 w 2 w 2 w 3 w 1 2 W l11 W 1 2 ...

Page 61: ...e 1 1 01 5120 309 265 1 39 5 k 112 w Prec 1 5 1 2 1 up R365 309 01 9 1 75 k h w Prec 1 101 5120 309 152 349 k 2 w Prec 1 5l21 up R366 309 086 3 5 meg 2 w Prec 1 1 01 5120 309 008 700 k h w Prec 1 5 1 21 up R402 31 1 055 So n 2 w Var WW SCALE ILLUM R407 302 333 33 k h w R408 302 101 l oo n h w R41 0 302 225 2 2 meg 112 w R41 1 308 051 4 k 5 w ww 5 R41 2 309 090 50 k w Prec 1 R41 3 3 1 1 0 1 5 1 0 k...

Page 62: ...al Value Selected R542 302 224 220 k lh w R543 306 104 1 00 k 2 w R544 302 224 220 k 1f2 w R545 302 224 220 k 2 w R605 302 474 470 k 1f2 w R61 0 304 102 1 k 1 w R61 1 306 104 1 00 k 2 w R615 302 473 47 k 2 w R616 302 152 1 5 k 1f2 w R625 302 1 85 1 8 meg 2 w R626 31 1 042 2 meg 2 w Var H v ADJ R627 306 475 4 7 meg 2 w R628 306 475 4 7 meg 2 w R640 302 273 27 k 2 w 1 0l 374X R641 302 102 1 k 2 w R6...

Page 63: ...54 01 6 Switches Description Transformers Power Plate Sweep Filament Main Power Supply Floating Power Supply Oscillator Electron Tubes 6AN8 6AL5 6AN8 6AL5 1 2AT7 6AN8 1 2AT7 6Al5 6AU6 6Al5 t SW205 and SW2 1 0 are concentric Furnished as a unit tt Concentric with SW510 Furnished as a unit ttt Concentric with SW255 Furnished as a unit I Rotary Push Button Rotary Push Button Lever Rotary Rotary Rotar...

Page 64: ...0 1 54 028 6BQ7A V310 1 54 022 6AU6 V315 1 54 1 1 3 6AX4 V31 6 1 54 1 1 3 6AX4 V403 1 54 035 6X4 V405 1 54 035 6X4 V407 1 54 052 5651 V410 1 54 022 6AU6 V412 1 54 044 12B4 V470 1 54 078 6AN8 V483 1 54 1 1 3 6AX4 V484 1 54 1 1 3 6AX4 V489 1 54 022 6AU6 V495 1 54 044 1 284 V505 1 54 023 6AX5 V506 1 54 035 6X4 V510 1 54 035 6X4 V515 1 54 1 1 2 6CD6GA V525 1 54 078 6AN8 V540 Use 1 54 039 1 2AT7 V605 1...

Page 65: ...HOR IZON TA L PL A TE r A MPL IFIE R SELECTO 2 P LATE G l I o_ V 2 1 0 I I I I I I rf I i0 4 r J I I I I I I I I DEVICE UNDER I I TEST I L _ _ _ _ _ _ J A A rs RIE 5 LOAD I 1 D C CIRCUI T VSo5 VS06 vs o VSJS VS2S VS40 8 L O CI V 2 1 5 v240 V241 V24S PL A TE 5 WE E P G NE RA TOR v 3 1 0 V31S v3 b PL A T VERTICAL DEFL E C TION PLA TE 5 VE R TICA L 1 A MPL IFIE R SCRE E N GRIg ___ __ V_ 28 _ __ __ V2...

Page 66: ...S VOLTACU WAVr FOIt 4toAp TU Mf 4S1JlltMI NTS A r NOT A SOI Un THf V 1 14 V4R f a Twt I N I NSTlltJJoo t NTS s YIf LL 45 ITHIII THr I NSTP II MUIT I TSt LF DUI TO NOII t l41 NUl tTUItING TOt UI I N f S 101 T N51 STOll NO lA UU TU8f c AIl CTl p l5TIc 5 ACTV l P OToGR Plj OF W4V fOP S Altt SNOW WAVEFOR MS E VOLTAGE R EADI NGS wf 1l1E 081 101 UND I OLLOWlole C ONOITION STl vs ILY C ENTI II EI H s SEC...

Page 67: ...IERS JOOV RI50 220 1 Cl70 001 Cl85A IS FROh1 SWS O 5F FROh1 5W510 F 400V V180 IJNIUG 6 L6 6 VI508 R d r O RI45 Cf4S jl2A T7 6 RITO II ZERO I f f31A 5 I SW I f I I I I o IGRID 81 2 7M 22 1001 _ 18 f _ _ rl I GRID B OOV UNREG RI65 2 Th1 175 RI47 7 RI46 I h1 RI66 1 M 1 75 A A Ll65 12 II I B O V SOA j 2AT7 R I67 If Z RISI 271 300V UNR EG RI71 1 5h1 R18 z Ii OI JOOV UNREG UNRl G JOOV FROM SWSI04R LOCA ...

Page 68: ...22 5 2 5M R224 1 5 M R223 5001 R222 2 501 R221 1 50K R220 501 UPPER v IlEAOI NGS CW LOWER II IU A DIN65 ccw I 8 SE IMPQltTANT NOT ON TEP C N OI AG SEo PAItTS LIST OR EoAP L1E R VAl UE S AND S N CHANGE S OF PAltTS IvIAR D WITH 5LUE OVTLINE VOLT S ILJ BAL R214 01 _ 5001 150V R21 5 1M R2 6 1 51 R211 471 7 JOOV 33 8 R Z26 SEL VOLT o Y CAL R227 51 1 1 1 7 RZZ9 20K HORIZ GA IN _ AD V210 6AU6 HORIZONTAL ...

Page 69: ...TYPL 5 70 CHARA C TLR IS TIC CURVL TRA CE R IOOV 7 100 V R280 4 7K 150V C21J0 4 7 0 2 2 S R288 II V2 90A V2908 OVTPUT 7 AMPL IFIERS V290A i6fj 7 A z R2d9 II 300 V R292 tJ2K 15 0 V 3 300 V 1 4 1 1 1 5 VOLTA G E R E A D I N G S WelLE OBTAI NED U N DER FOLLOw I N G CO I JOITI ON VER TIC II L MAID I V PLATE S REEN 6 1l 1 e VEItTl L POSI1 I ON I Ne UPPER v EAOIN S l owep v I2 E A D1 NGS 1 PLATE c w c c...

Page 70: ... J M T RrC ITS_ PLAT 5WE LP Gl NE RA TOR I I I I Lt J UNDER TE 5T I _GRID I PLAT I I I I I I I I I I I J fl I I I I SW205 I I IPLATE 6 elD I I SELECTOR I 4IVOLT s D vl I I I I I I I I I I I I I I 31F I I I _ I I o l I 300V lJNR G MAIN POWE R UPPL f r I I TlJIJE CIIRR NT 5IGNAL 1 I TO GRID PIN V28 I I INPUT AMPLlFI R j tI c I V R TICAL AMPLIF I R 1 I __ 1 1 5E V RTlCAL AMPLlrJ R DIAGRAM V RTICAL MA...

Page 71: ...50 T E 5 T ON L I G H T DE T A iA M I AC VOLTS ME TER D350 0351 AO rfjjJ HTR I ONA 0 TO 300V A R350 CZKJ DC 71 a hr _ O DC I I I DC I SW355 I if I 15 K J P J R I SW350 1 L _ lINDICA TIONI _ _ J T o R 360 G 51 7 O Vv v R3t 1 14 0 11 1 51 1 WAVE FOR M5 VOLTA6E 2 EADI NGS WE E OBTAI N E D UNDER F Jl l_OWI 1 6 C OND IT I ONS PE I Ol T 00 5Et I MPO TANT NOTE ON STEP GEN I 01 4 I Il O 2 50V 0 R357 27K 1...

Page 72: ...TOR V470A jEllieS REG JLATOR V4 9 COMPARA TOR V495 SERIES REG JLATOR 11 483 V 83 RE s bAX4 1 _ IZ r EL E V ATE TO JaW q z TO V48 J V484 V4 1 SEE f lEATER WIRING DIAGRAM Z7 TO VelO VZI MAIN POWlil JIIPPLY PiAU SHelP CRT tRCIIIT Z J 1L U ST P TO V E RT AMPt lFlERS I sTE P G N I HORIZ Jr r NEAT R WIRING DIAGRAM Oov R46 5 271 t JOOV R470 2 2M V4TOfj jbAN8 6 56t tf 2 1 ITINPl T TO SPi IT i OAf J3V PHA ...

Page 73: ... IA L E C W 1 00 t POWER TE T ON S C M 7 PO R 7 TA C N T TE N OT EN t IA p IOV TO 300V R5 J1 40t R5 J2 bOt R533 lOOt R5 JO JO 30 W lINRE G FROM SW510 4 Jl V5408 VOLTAGE S E T TING C f 50 11 RS34 ZOOI V540A 50V RE GIILATOR IOOV FROM SW510 UNRE G 4 0 0 V R544 ZZOIe R545 Z201 V540A jl2AT7 2 TO A L L POINT MA R I E D 5011 ON TillS DIAGRAM V525A j6AN8 V5258 j6AN8 300V IINREG FROM 5W510 4 R RS27 100 S P...

Page 74: ...o _ _ _ y TO V 31 AB V630 5642 ITOOV x x I JOO V R 6 4 d 4 7M R 6 4 7 4 7M IV63 9 T52 CRT 300 V GE OM A DJ R 6 O OO 300V OO V _ _ _ R 6 5 1 501 R 6 4 5 Z M f ocusl R 6 4 1 5M A j T GMA TI 5M 14 1 NT N sITYI VO LTAGE R E ADI NGS wUE O tTA I E O U O R FOL LOWI Nu O N D I T I O N S I N T E NSITY CW e e I MPOR TANT NOTE ON STE P EN OI AC Sf f PART S LI ST F O E ARL1 R VAL J S A N D S I N C ANG e S O F...

Page 75: ... t i m provements to o u r i nstruments as soon as they are deve l oped and tested Sometimes due to p r i n t i n g and s h i p p i ng require ments w e c a n t g e t these changes i m m e d i ate l y into pri nted m a n u a l s Hence your m a n u a l m a y conta i n new c h a n g e i nformation o n fo l l o w i n g pages If i t does not your ma nu a l is correct as pr i n t e d ...

Page 76: ...TYPE 570 PARTS LIST CORRECTION CHANGE TO R541 304 123 12 k nominal value Selected TYPE 570 TENT siN 5 5 50 Ml 149 0023 00 0 1 mAmp ...

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Page 105: ...nction with standard equipment in your facility devise alternate ap proaches or build the special test equipment your self For all serial numbers 2 Factory circuit speCifications are not guaranteed unless they also appear as catalog or instruction manual specifications Factory circuit specs usually are tighter than adver tised specs This helps insure the instrument will meet or exceed advertised s...

Page 106: ...d prec henry pt high voltage ptm infinity ptp internal sec kilo 103 sn kilohm term milli 10 3 tub milliamp unreg maximum v megacycle var megohm w millihenry WW x former 1964 Tektronix Inc P O Box 500 Beaverton Oregon All rights reserved 570 CALIBRATION midrange or centered minimum millimeter metalized paper tubular capacitor millisecond mylar tubular capacitor millivolt 6 micro 10 microfarad micro...

Page 107: ...truction manual specs 1 EQUIPMENT REQUIRED 2 PRELIMINARY INSPECTION 2d Crt face plate tilt 2d Crt face plate concavity 2d Crt face plate convexity 1 32 max 1 32 max 1 32 max 3 570 PRESETS 4 RESISTANCE CHECKS 4b 1SO 27 k resistance error 10 max 4c SERIES LOAD resistor error S max 5 POWER SUPPLIES Sb lOOv at DC jack S max Sd 1700 2 max Se h Regulation 105 to 125 v ac supply error max ptp ripple max ...

Page 108: ... center when cw there must be at least 7 dots to the right of grati cule center 22 MINIMUM NO OF CURVES 2 b STEPS FAMILY range 4 to 12 steps 23 SINGLE FAMILY 24 HEATER 24c Error 5 max I 25 PEAK VOLTS 26 PLATE SWEEP AND TRANS CURRENT BALANCE 27 GRID AND SCREEN TRANSFORMERS 28 6U8 DISPLAY 29 RETRACE 30 ACCESSORIES 31 THE END 4 570 CALIBRATION 2 5 64 TEK 570 FCP ...

Page 109: ...1 5 4 1 016 006 012 029 012 024 154 033 9 pin adapter plate Patch cords banana plug both ends Patch cords banana plug and jack combination both ends 6U8 c Miscellaneous equipment 1 630 Triplett meter 20 OOOO v dc or 262 Simpson meter 20 OOOO v dc 1 Variable line voltage source with meter 1 special 570 MA DIV switch checker 1 803 Jdhn Fluke differential voltmeter TEK 570 FCP 2 5 64 NOTES 570 CALIBR...

Page 110: ...n connections are tight Loos en crt clamp remove graticule push crt forward and check crt face plate tilt relative to front panel keep black light shield in place Push crt forward to a straight edge firmly placed against the front panel across any diameter of the crt Check gap within phosphor area with special crt face tilt checker 1 32 max j Straight I Edge _ i l _1_ rl_ rlj 1 32 max 1 32 max 1 3...

Page 111: ...cw Voltmeter RANGE DC VOLTS 140 INDICATION DC Grid step generator STEPS FAMILY mid r STEPS SEC ccw 120 START ADJUST mid r VOLTS STEP 1 Crt display VERTICAL PLATE VERTICAL MA DIV 1 HORIZONTAL PLATE HORIZONTAL VOLTS Div 1 Plate sweep generator PEAK VOLTS 100 SERIES LOAD RESISTANCE OHMS 10K Operating voltages HEATER 6 3 VARIABLE heater full ccw DC 100 VARIABLE DC CALIBRATED DC full ccw MAIN power off...

Page 112: ...c T401 term 1 4 inf b 150 27 K jack error 1O max Check the 150 27 K jack on the teSt panel for 27 k 2 7 k max resistance between the jack and the 150v supply 8 570 CALIBRATION NOTES 3b Presetting internal adjustments 1 Presetting internal adjustments is helpful for first time calibration but is usually unnec essary for recalibration If you preset you ll have to perform a 100 recalibration Don t pr...

Page 113: ...sistance between V31S pin 3 and test panel P jack Check as follows SERIES LOAD RESISTANCE OHMS 300 1K 2K SK 10K 20K SOK lOOK 200K SOOK 1M TEK 570 FCP 2 5 64 resistance error S max 00 7500 17500 47500 10 k 20 k SO k lOO k 200 k 500 k 1 m NOTES 570 CALIBRATION 9 ...

Page 114: ...term 24 or 25 e Check low voltage power supply values supply error max 150v 3v 100v 2v 300v 6v supply error approx 400v unreg 32v 3002v unreg 24v 400v floating unreg 32v 300v floating unreg 24v f Elevated filaments T40l term 12 and 13 approx 300v T501 term 18 approx 100v g Phase inverter input Measure 35v ac across T40l term 29 and 30 10 570 CALIBRATION NOTES 5b Calibration accuracy 1 Accurate cal...

Page 115: ... unreg 4 5v 4 5v 5v 5v 1700v Check for no trace blooming at max intensity I 6 GRID A GRID B 1 5027 K Check voltages as follows check TEST point POSITION GRID A OFF GRID A GRID B GRID B OFF GRID B GRID A 150 27 K OFF meter reading 125v 125v 125v 125v 150v These readings will vary with the type of meter used Simpson 262 reads approx 75v and meters with 250v range will read approx HOv TEK 570 FCP 2 5...

Page 116: ...eter between test panel DC jack and gnd Check 570 meter for proper dc voltage reading 2 by comparing against test meter as follows 1 Set VARIABLE DC fully ccw 2 Set DC to 200 3 Set TEST power to ON 4 Adjust VARIABLE DC for 140 as read on test meter 5 Read 570 meter 140v 2 max 6 Set DC to 100 and VARIABLE DC toCALI BRATED 7 Read 570 meter 100v 2 max 12 570 CALIBRATION NOTES 2 5 64 TEK 570 FC D ...

Page 117: ... 35v test meter reading 35 50 35 20 35 Adjust VARIABLE dc for 14 v test meter reading 14 20 14 Adjust VARIABLE dc for 7v test meter reading 7 20 Set VARIABLE dc to CALIBRATED 140 50 2 max 140 20 2 max 9 DC a DC range 7 o to 100v Set INDICATION to DC Vary DC thru it s range and note indication from 0v to at least 100v on test meter and 570 meter TEK 570 FCP 2 5 64 NOTES Sa 570 meter indicates more ...

Page 118: ... check for proper opera tion 11 VERTICAL POSITIONING a Range 2cm up Set VERTICAL POSITIONING ccw Trace must be off screen at crt bottom Set VERTICAL POSITIONING cw Trace must be at least 2cm lip from graticule center 1 2 PHASE A AND B a Setup Obtain a vertical bar pattern by setting HORIZON TAL to GRID Connect P jack to K jack on test panel Adjust STEPS FAMILY for 6 to 10 steps bars b Phase A With...

Page 119: ...V range dc volts SCREEN 1 DC GRID I 140 Adjust VARIABLE dc for 570 meter indication of exactly 140v Take into account meter error pre viously noted b Vert Gain Set INDICATION to HTR and position the spot to bottom graticule line Set INDICATION to DC and adjust Vert Gain for deflection of 10 major div Move INDICATION back and forth between DC and HTR until all interaction has been compensated for T...

Page 120: ...r diY max 2 2 10 1 S minor diY max 1 1 10 1 S minor div max 5 5 10 1 S minor div max 2 2 10 1 5 minor diY max 1 1 10 1 S minor div max 05 05 10 1 S minor diY max 02 02 10 1 S minor div max 16 VOLTS DIY BALANCE a Setup VERTICAL VERTICAL MA DIV HORIZONTAL SCREEN 1 PLATE Connect P jack to K jack on test panel b Volts Diy Bal Move HORIZONTAL VOLTS DIY back and forth be tween 5 and 1 while adjusting Vo...

Page 121: ...ground 18 HORIZONTAL GAIN a Setup DC 100 VARIABLE dc CALIBRATED HORIZONTAL PLATE HORIZONTAL VOLTS DIV 10 SERIES LOAD 1M b Hor Gain By alternately connecting the P jack on the test panel to K and DC the dot will switch from the left to the right edge of the graticule Adjust Hor Gain for exactly 10 div of defle ction 19 VOLTS STEP ADJ a Setup HORIZONTAL GRID HORIZONTAL VOLTS DIV 1 VOLTS STEP 1 b Vol...

Page 122: ...follows HORIZONTAL dots div VOLTS STEP VOLTS DIV 3 max 1 2 5 1 2 5 10 10 10 21 START ADJUST a Setup 1 1 2 1 5 1 1 1 2 1 5 1 10 1 20 2 50 5 HORIZONTAL GRID b HORIZONTAL VOLTS DIY 1 START ADJUST ccw VOLTS STEP 1 START ADJUST range 7 dots With START ADJUST full ccw the first dot must be to the left of graticule center With START ADJUST full cw theremust be at least 6 steps 7 dots to the right of grat...

Page 123: ...to 12 steps Turn STEPS FAMILY full ccw Adjust Min No Curves for four s Turn STEPS FAMILY full cwo Note at least 12 steps 13 dots on crt before the generator drops out 23 SINGLE FAMILY a Single display Set STEPS FAMILY full cwo Depress SINGLE FAM ILY button and note a single display of at least 13 dots TEK 570 FCP 2 5 64 NOTES 570 CALIBRATION 19 ...

Page 124: ...RIABLE heater at 100 5 as follows HORIZONTAL deflection approx HEATER VOLTS DIY max error 1 25 2 8 8 2 2 minor div 1 4 2 9 9 2 5 minor div 2 0 5 5 6 1A minor div 2 35 5 6 6 1 7 minor div 2 5 5 7 0 1 8 minor div 3 15 5 8 9 2 2 minor div 4 2 1 5 9 3 0 minor div 4 7 1 6 6 1 7 minor div 5 0 1 7 0 1 8 minor div 6 3 1 8 9 2 2 minor div 7 5 2 5 3 1 3 minor div 12 6 2 8 9 2 2 minor div 18 9 5 5 3 1 3 mino...

Page 125: ...Plate Sweep C311 Plate Trans C315 Try all the following combinations and adjustments to find minimum trace width Connect ungrounded side of C315 of either terminal 5 or 7 of T31O Ceramic capacitor C316 may be con nected from gnd to either terminal S or 7 of T310 or removed Adjust Plate Sweep C311 and Plate Trans C315 for minimum trace width TEK 570 FCP 2 5 64 NOTES 25b C3l5 location 1 Underneath s...

Page 126: ...terminals at which C502 and C509 when adjusted give minimum trace width in SCREEN and GRID positions of VERTICAL switch These adjustments interact repeat as necessary 28 6U8 DISPLAY a Presets 22 TEST power PEAK VOLTS SERIES LOAD DC VERTICAL VERTICAL MA DIV HORIZONTAL HORIZONTAL VOLTS DIV VOLTS STEP STEPS SEC INDICATION HEATER VARIABLE heater 570 CALIBRATION off 200 10K 100 PLATE 1 PLATE 20 5 240 H...

Page 127: ...to HTR c Display of curves Set TEST power to ON When tube is sufficiently warmed set TEST POSITION to GRID A and GRID B and note the display of curves Set TEST power to off move plate to other side of test panel reset TEST power to ON and recheck for displays 29 RETRACE a C205 With a display of GRID A curves from previous step set HORIZONTAL VOLTS DIV to 20 and 50 while adjusting C205 for best min...

Page 128: ...er plates Blank adapter plates Black patch cords banana plug and jack combination both ends Red patch cords banana plug and jack combination both ends 100 n suppressor cord banana plug both ends 300 n suppressor cord banana plug both ends 1 k suppressor cord banana plug both ends Black patch cords banana plug both ends Red patch cords banana plug both ends Fuse 1 16 a 3 ag fast blo Fuse 1 2 a 3 ag...

Page 129: ...t ccw OFF ON 1 C H ECK With the TEST POWER switch Q the resistance to ground should be approximately Main Supply 15Ov lOOv 30Ov 400 9K 15K 25K 25K Floating Supply 40Ov over lOOK ohms 30Ov over lOOK ohms Check transformer primar y for infinite resistance to ground Check the 150 27K jack on the Test Panel for 27K2 between the jack and the 15Ov supply 2 ADJUST 150 AND CHECK RIPPLE AND REGULATION Tum ...

Page 130: ...k should read approximately 125v The 150 27K jack should read 150v using a meter a 300 v range you should read 125 v A meter with a 250 v range you should read 110 volts Turn the TEST PCMER switch on Advance the INTENSITY control and position the spot to the central area of the graticule Check the FOCUS and ASTIGMATISft controls for proper operation Obtain a horizontal trace by switching HORIZONTA...

Page 131: ... GRID and VOLTS DIV to Turn the START ADJUST full left ccw Ground pin 8 of V1l 5 Depress the BIAS button and place the spot under the center graticule line Release the switch and with the VOLTS STEP Z8RO ADJ return the spot to the center 12 CHECK START ADJUST POSITION AN D RANGE With the START ADJUST in the full left ccw position the first step should be slightly to the left of the zero bias point...

Page 132: ...00 on the meter Connect the P jack on the Test Panel to and p ositi on the spot under the left hand graticule line Now connect the P jack to the HTR jack and observe a horizontal denection Check throUgh the entirerange of the HEATER switch keeping the VARIABLE control set to 100 5 at all times or set 6 3 VAC for 8 9 CM of Deflection and use thi s as a standard HEATER volts VOLTS DIV Deflections di...

Page 133: ...eoted to either terminal 14 or 16 of T50l Adj C502 for a minimum trace width Switch the VERTICAL control to SCREEN C509 can be connected to either terminal 1 or 9 of T50l Adjust C509 for a minimum trace width Recheck the setting of C502 since there will be a slight interaction between C502 and C509 22 PLACE A 6U8 IN POSITION ADJUST C205 AND CHECK ZERO BIAS AND SINGLE FAMILY SwrlCBES Switch TEST PO...

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