Tektronix 177 Instruction Manual Download | Manualshive

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Summary of Contents for 177

Page 1: ...177 STANDARD TEST FIXTURE SERVICE ...

Page 2: ...RVI CI NG OTHER THAN THAT CONTAINED IN OPERATING INSTRUCTIONS UNLESS YOU ARE QUALI FI ED TO DO SO Tektronix Inc P O Box 500 Beaverton Oregon 97077 070 1472 00 Product Group 48 PLEASE CHECK FOR CHANGE INFORMATION AT THE REAR OF THIS MANUAL 177 STANDARD TEST FIXTURE SERVICE INSTRUCTION MANUAL Serial Number _ _ _ _ __ First Printing JUL 1973 Revised JUN 1983 ...

Page 3: ...price change privileges are reserved INSTRUMENT SERIAL NUMBERS Each instrument has a serial number on a pa el insert tag or stamped on the chassis The first number or letter deSignates the country of manufacture The last five digits of the serial number are assigned sequentially and are unique to each instrument Those manufactured in the United States have six unique digits The country of manufact...

Page 4: ...n 4 2 Troubleshooting Introduction 4 2 Troubleshooting Equipment 4 2 Troubleshooting Aids 4 2 Component Removal and Replacement Removal of the VERTICAL CURRENT DIV Switch 4 3 Replacement of the VERTICAL CURRENT DIV Switch 4 5 Removal of Indicator Lamps Repackaging for Shipment CHECK AND ADJUSTMENT PROCEDURE Introduction Services Available Test Equipment Required Performance Check Adjustment Proced...

Page 5: ...177 Service t Fixture 177 Standard Tes ...

Page 6: ...12 0 12 volt DC output and a looping compensation control The 100 V 400 V and 1600 V collector ranges are normally interlocked and are energized by closing the protective box cover or by pushing the interlock defeat button Only those voltages that are not interlocked are available for Emitter Base Leakage or Breakdown tests The electrical and environmental characteristics shown are valid for instr...

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Page 8: ...DED MODE Base terminal is grounded step generator polarity is inverted and the em itter term inal is switched as follows EM ITTER TERM OPEN OR EXT Disconnects the emitter term inal from the step generator output and connects the emitter ter minal to the front panel EXT BASE OR EM IT INPUT Connector STEP GEN Applies step generator output to the em itter terminal EMITTER BASE BREAKDOWN Grounds the b...

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Page 10: ...ensing resis tors keeping the time constant sim ilar to the time constant of the stray capacitance and R630 through R636 U616 output is connected to a 10 1 divider R618 R619 This divider output is connected to the horizontal attenuator in the low current ranges of the VERTICAL CURRENT DIV switch 2 nA DIV to 2 mA DIV This voltage to the horizontal attenuator is the same as the voltage on the collec...

Page 11: ...6 15 I I I J 15 I F G i SUPPLY 6 15 I Jr f _ J I r I ______ J X5 X2 5 Xl I I I I I I I I I I I I I I I I I I I I I I I I I 2 1 1 t VE ri T AL AMPLIFIER U624 0626 0628 d 15 L 6 V E R T IC A L S I G N A L C O M M O N 2 2 6 I I I I I I LOW CURRENT 2 nA 2 rnA I I i C H I G H C U R R E N T 04 ______________________________________________ A 1 TO HORIZONTAL r 5mAto2A I ATTENUATOR l DEVICE UNDER TEST I T...

Page 12: ... recommended The 100 V supply can be lethal and the 400 V supply is very likely lethal If this modification is made a WARN ING note should be permanently attached to the 177 To enable the l00 volt supply without using the protective box or the Interlock Defeat switch remove link A and connect a wire between point A and point X To enable the 400 volt supply without using the protective box of the I...

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Page 14: ...s used in the instrument Do not use chemicals that contain benzene toluene xylene acetone or similar solvents REV B JUL 1979 Lubrication The reliability of potentiometers rotary switches and other moving parts can be maintained if they are kept properly lubricated Use a cleaning type lubricant on rotary switch contacts Lubricate switch detents with heavier grease such as Tektronix Part No 006 0219...

Page 15: ...tions a 20 000 ohms volt VOM can be used if allowances are made for circuit load ing when measuring voltage at high imped ance points 3 Test Oscilloscope An oscilloscope with a DC to 10 MHz frequency response and 10 mV Div to 10 V Div vertical deflection factor is suggested A 10X probe shou Id be used to reduce circuit loading Troubleshooting Aids Diagrams Circuit diagrams are given on foldout pag...

Page 16: ...gray green indicates Tektronix Part Number 152 0185 00 Circuit Boards A photograph of each circuit board with circuit components identified is included on the apron of the schematic diagram relating most directly to the circuit board Some board photos may be placed on the back of the preceding circuit diagram Each circuit board photo is sectioned by a grid system to facilitate rapid location of co...

Page 17: ...cal Parts List This coupling isolates the knob set screw from the switch which the voltage may be as high as 1600 volts o Pull the to he re J Unsolder all leads at the switch wafers __ 6 WARNING I Do not replace the insulating bushing with an un insulated bushing as the switch shaft is elevated to as high as 1900 volts Since many of the components including entire switch assemblies are elevated re...

Page 18: ...ice Removal of Indicator Lamps Knob Sirt Lamps Remove the right end from the 177 as shown in Fig 4 3 These lamp assemblies gray plastic snap into the plastic sleeve To remove the lamp assembly grasp the assembly with needle nose pliers and pull the assembly away from the sleeve Unsolder the leads and remove the lamp assembly Red Dangerous Voltage Lamp This lamp assembly is mounted in a rubber grom...

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Page 20: ...sted specifications 1 Digital Voltmeter 4 1 2 digits or a DC voltage bridge Accuracy 0 01 voltage range 5 volts input impedance 500 MQ See footnote 1 Table 5 1 2 Capacitor Capacitance 0 01 pF working voltage 1000 tolerance 20 3 Shunt resistors Range 1 Q to 10 MQ See the table These resistors are available from Tektronix Inc as a kit Tektronix Part Number 067 0691 00 Two 200 Q 1 resistors are inclu...

Page 21: ... cord between C and E term inals WARNING I Replace the plug in the bottom panel of the 177 to avoid contact with potentially lethal voltage 5 2 3 Check Vertical Current Per Division a Push Xl0 VERT MAG in Reset the VERTICAL CURRENT DIV to 2A switch LEFT RIGHT to RIGHT turn VARIABLE COLLECTOR to 100 and wait for the COLLECTOR SUPPLY CIRCUIT BREAKER to open b Remove the C to E patch cord c Reset the...

Page 22: ...hese measurements check the 5A 1A and 2A ranges in the 177 REV JAN 1983 Performance Check 177 Service TABLE 5 2 Difference VERTICAL STEP Resistor in DVM Within CURRENT OFFSET 1 4 Reading 3 DIV AMPL CoB CoB 1nA 1 LA 1 LA 1 MQI 0 800 V 0 024 V 2 LA 2 LA 1 600 V 0 048 V 5 LA 5 LA 4 000 V 0 120 V 1 LA l LA 100 kQI 0 800 V 0 024 V 2 LA 2 LA 1 600 V 0 048 V 5 LA 5 LA 4 000 V 0 120 V 10 LA 10 LA 10 kQ 0 ...

Page 23: ...centered 5mA b Increase VARIABLE COLLECTOR to produce an eight division vertical display c Horizontally position the bottom of the trace to graticule center d CHECK The top of the display should be displaced from graticule center not more than 7 mV 1 4 divisions If this requirement cannot be met the cause could be incorrect adjustment of Vertical GAIN and CM RR controls ADJUSTMENT PROCEDURE Initia...

Page 24: ...ig_ 5 3 Connect the DVM between the B term inal and the white green w ire on the MAX PEAK VOLTS switch _ c Patch the B terminal to the C terminal right side Set the LEFT RIGHT switch to RIGHT_ d Set the OFFSET MULT to produce a DVM reading of 0 400 volt 0 4 mV e Move the DVM lead from B terminal to terminal 4 of connector P129 see Fig 5 4 on the Collector Supply board measure the voltage between t...

Page 25: ...CM R through the 177 bottom panel for minimum vertical deflection 5 6 f INTERACTION If R617 is adjusted repeat steps 1 and 2 g Set the VARIABLE COLLECTOR to 0 and remove the patch cords and replace the plug in the bottom panel of the 177 Test Fixture WARNING I Always replace the plug in TP630 access hole to avoid contact with potentially lethal voltages 4 Adjust C630 a Set the controls as follows ...

Page 26: ...ontact you concerning any change in part number Change information if any is located at the rear of this manual SPECIAL NOTES AND SYMBOLS XOOO Part first added at this serial number OOX Part removed after this serial number ITEM NAME In the Parts List an Item Name is separated from the description by a colon Because of space limitations an Item Name may sometimes appear as incomplete For further I...

Page 27: ...ONICS INC SPRAGUE ELECTRIC CO CARDWELL CONDENSER CORP CTS CORP ELECTRO MOTIVE CORPORATION SUB OF INTERNATIONAL ELECTRONICS CORPORATION ERIE TECHNOLOGICAL PRODUCTS INC TRW ELECTRONIC COMPONENTS IRC FIXED RESISTORS PHILADELPHIA DIVISION OAK INDUSTRIES INC SWITCH DIV TEKTRONIX INC GRAYHILL INC DALE ELECTRONICS INC 1200 COLUMBIA AVE 134 FULTON AVENUE 240 EAST PLATO BLVD 87 MARSHALL ST 80 E MONTAUK HIG...

Page 28: ... 00 RES FXD CMPSN 2 2K OHM 5 lW 01121 GB2225 R602 304 0391 00 RES FXD CMPSN 390 OHM 10 lW 01121 GB3911 R604 31 5 051 0 00 RES FXD CMPSN 51 OHM 5 0 25W 01121 CB5105 R606 321 0306 00 RES FXD FILM 15K OHM 1 0 125W 91637 MFF1816G15001 F R610 311 11 20 00 RES VAR NONWIR 100 OHM 30 0 25W 71450 201 YA5531 R611 321 0306 00 RES FXD FILM 15K OHM 1 0 125W 91637 MFF1816G15001 F R612 321 0385 00 RES FXD FILM l...

Page 29: ...035 R651 USED IN SIN S B010l02 B010l03 B010l04 R651 B010107 B010l09 B010ll0 B010lll B010112 R651 B010ll B010117 B010119 B01012 B010121 R651 B010126 BOl 0127 AND BOl 0128 ONLY R651 315 0822 00 RES FXD CMPSN 8 2K OHM 5 O 25W 01121 CB8225 R659 301 0226 00 RES FXD CMPSN 22M OHM 5 0 50W 01121 EB2265 R660 321 0097 00 RES FXD FILM l00 OHM l 0 125W 91637 MFF1816Gl00ROF R661 323 0729 01 RES FXD FILM 900 OH...

Page 30: ...or combination AT Attenuator fixed or variable M Meter B Motor Q Transistor or silicon controlled rectifier BT Battery P Connector movable portion C Capacitor fi xed or variable R Resistor fixed or variable CR Diode signal or rectifier RT Thermistor DL Delay line S Switch OS Indicating device lamp T Transformer F Fuse TP Test point FL Filter U H Assembly inseparable or non repairable integrated He...

Page 31: ...LaC NO LaC C601 28 0604 5C R611 48 R621 38 C602 3A 0626 SC R612 38 R622 38 CKT GRID CKT GRID C629 6C OS28 S8 RS13 4B RS27 6C NO LaC NO LaC R614 48 R628 58 CS30 S8 RS4S 98 CRSOl 48 RSOl 5C R615 28 R629 78 R647 40 CRS02 58 RS02 78 RS1S 38 CRS51 48 R648 58 CRSll SA R604 4C R617 2C US1S 3A CR652 58 R649 lE CR614 SA R606 58 R618 48 U624 3C RS51 5A R610 58 R619 48 RS41 20 RS59 5E RS43 3C RS45 28 S630 BC...

Page 32: ...I t I I OUTPUT RS Oka J 051 1 LHTO o I G HC T I ___ 1I 1O 7 ______ ___ ____ i B B j mi l I 000 I E S t i t O RM 3 L _ o b4 S I n u E r E Jh48 IGROUNDI 45 22 El T BASE b4 I 0 EMIT e 1f IN PUT JIo40 STEP 6EN 1f __ OUTPUT o o o t o o iii o a Z I UC to 2 tt Ii Q iii o r z a I w Q 1 W t o 0 t o o o tt t t tt o o w r a 1 1 1 I I I 14 7 2 b E IJ J U N I l 8 R IGH T TEST SOCKET 177 16 I SV TP 02 15V R OI ...

Page 33: ... be purchased separately unless otherwise specified ITEM NAME In the Parts List an Item Name is separated from the description by a colon Because of space limitations an Item Name may sometimes appear as incomplete For further Item Name identification the U S Federal Cataloging Handbook H6 1 can be utilized where possible ABBREVIATIONS INCH ELCTRN ELECTRON IN INCH SE SINGLE END NUMBER SIZE ELEC EL...

Page 34: ...N TILLEY MFG CO WROUGHT WASHER MFG CO TEKTRONIX INC CENTRAL SCREW CO SEASTROM MFG COMPANY INC Address 7923 SW CIRRUS DRIVE 9301 ALLEN DRIVE YOUK EXPRESSWAY 16931 MILLIKEN AVE 571 W POLK ST 446 MORGAN ST 299 10TH AVE S W ST CHARLES ROAD 900 INDUSTRIAL RD 2100 S 0 BAY ST POBOX 500 2530 CRESCENT DR 701 SONORA AVENUE City State Zip BEAVERTON OR 97005 CLEVELAND OH 44125 NEW CUMBERLAND PA 17070 IRVINE C...

Page 35: ...7 210 0223 00 TERMINAL LUG 0 25 INCH OIA SE 86928 A313 136 ENO ATTACHING PARTSr 361 0234 00 1 RESTRAINT SHAFT 80009 361 0234 00 18 136 0140 00 3 JACK TIP BANANA STYLE CHARCOAL GRAY 80009 136 0140 00 ATTACHING PARTS 19 210 0465 00 2 NUT PLAIN HEX 0 25 32 X 0 375 INCH BRS 73743 3095 402 20 210 0223 00 TERMINAL LUG 0 25 INCH OIA SE 86928 A313 136 21 210 0895 00 WSHR SHOULOEREO 0 375 00 X 0 105 INCH T...

Page 36: ... B010100 B039999 PANEL FRONT 80009 333 1658 00 333 1658 01 B040000 B042444 PANEL FRONT 80009 333 1658 01 333 1658 02 B042445 B049999 PANEL FRONT 80009 333 1658 02 333 1658 03 B050000 1 PANEL FRONT 80009 333 1658 03 56 367 0213 00 B050000 2 HANDLE PULL CKT CARD 80009 367 0213 00 ATIACHING PARTS 57 210 0586 00 B050000 2 NUT PL ASSEM WA 4 40 X 0 25 STL 83385 OBD END ATIACHING PARTS 58 386 2406 00 B01...

Page 37: ...echanical Parts 177 Service Fig Index Tektronix Serial Model No No Part No Eff Dscont Qty 1 2 3 4 5 Name Description 198 2888 00 WIRE KIT ELEC ON NOT SHOWN REV JAN 1983 Mfr Code 80009 Mfr Part Number 198 2888 00 8 5 ...

Page 38: ...REV MAR 1982 RD TEST FIXTURE 177 STANDA ...

Page 39: ......

Page 40: ...on 2 1 2 3 337 1194 00 013 0098 02 013 0111 00 070 1472 00 REV C FEB 1976 1 SHIELD ELEC TRANSISTOR 1 ADAPTER TEST TRANSISTOR 1 ADAPTER TEST DIODE 1 MANUAL INSTRUCTION Mfr Code Mfr Part Number 80009 337 1194 00 80009 013 0098 02 80009 013 0111 00 80009 070 1472 00 177 STANDARD TEST FIXTURE ...

Page 41: ...to printing and shipping requirements we can t get these changes immediately into printed manuals Hence your manual may contain new change information on following pages A single change may affect several sections Since the change information sheets are carried in the manual until all changes are permanently entered some duplication may occur If no such change pages appear following this page your...

Page 42: ...OLL 100 HORIZON7f L VOLTS DIV 2 V COLLECTOR VERTICAL CURRENT DIV 2 nA LEFT RIGHT OFF b ADJUST C630 for minimum trace tilt with the loop closed Keep the loop closed with the LOOPING COMPENSATION control while adjusting C630 Be sure that the TRACE ROTATION control is set properly If in doubt switch the VERTICAL CURRENT DIV to 2 A and determine whether the trace is parallel to the horizontal graticul...

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