Tektronix, Inc. 7A16 Instruction Manual Download Page 66 | Manualshive

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Summary of Contents for 7A16

Page 1: ...MR...

Page 2: ...I N STFRUCTI O N MAN UAL Serial Number 7A16 AMPLIFIER Tektronix Inc S W Millikan Way P O Box 500 Beaverton Oregon 97005 Phone 644 0161 Cables Tektronix 070 0980 00 1069...

Page 3: ...to the field therefore all requests for repairs and re placement parts should be directed to the Tektronix Field Office or representative in your area This procedure will assure you the fastest possib...

Page 4: ...Symbols Parts Ordering Information Index of Electrical Parts List 3 2 3 2 3 2 3 2 3 3 SECTION 7 DIAGRAMS AND MECHANICAL 3 3 PARTS ILLUSTRATIONS 3 3 Diagrams Mechanical Parts Illustrations SECTION 8 M...

Page 5: ...Fig 1 1 Type 7A16 Amplifier_...

Page 6: ...dth metahertz Risetime 15 nanoseconds to 21 nanoseconds Maximum Input Voltage DC Direct Coupled 100 mV Div to 500 VDC 500 V DC P P AC at 5 V Div 1 kHz or less 5 mV Div to 100 VDC 100 V DC P P AC at 50...

Page 7: ...switch Push knob in and release to activate the knob moves out ward from the VOLTS DIV control when activated POSITION Controls vertical position of trace IDENTIFY Moves trace upward about 0 25 divisi...

Page 8: ...e VOLTS DIV control through the remaining positions of the switch setting the Calibrator to appropriate output amplitudes The STEP ATTEN BAL control may be adjusted to minimize trace shift when switch...

Page 9: ...LIFIER SETUP CHART POSITION INPUT MR 15pF TEKTRONIXO 7A16 AMPLIFIER POLARITY UP 0 INVERT a BANDWIDTH FULL 20MHz VARIABLE CAL IN VOLTS DIV STEP ATTEN BAL Fig 2 2 Control setup chart Operating Instructi...

Page 10: ...rence The GND position is also used to pre charge the coupling capacitor to the average voltage level of the signal applied to the INPUT connector The pre charging network allows the input coupling ca...

Page 11: ...r is limited to about 20 megahertz The unwanted high frequency signals such as television broadcast radiation interference are reduced in the displayed waveform Fig 2 4 illustrates the use of this fea...

Page 12: ...ed pushed in position 3 Push the Input Coupling GND button 4 Set the triggering controls to obtain a free running trace 5 Position the trace to the bottom line of the graticule or other reference line...

Page 13: ...e reference and apply the signal to the INPUT connector 4 Set the VOLTS DIV switch to a setting that provides sufficient deflection to make the measurement Do not re adjust the VARIABLE VOLTS DIV cont...

Page 14: ...found at the rear of this manual Fig 3 1 Signal paths through input COUPLING switch Type 7A16 each block refers to the diagram on which the complete circuit is found The signal to be displayed on the...

Page 15: ...of the attenuation network at all VOLTS DIV switch positions Variable capacitor C18 adjusts the basic input time constant for a nominal value of one meg ohm X 15 picofarads R14 C14 isolate the input f...

Page 16: ...0 Q135 Q170 Ql75 The gain of the output amplifier is approximately five set by Readout Block Circuit Description Type 7A16 the ratio of R142 R182 to R128 R168 Thermistor RT128 and Varactors CR128 CR16...

Page 17: ...20B to ground This shunts a small amount of the collector current causing the trace to move 2 It also grounds the base of Q200 This causes Q200 to turn on hard erasing the displayed readout and causin...

Page 18: ...y air Remove any dirt which remains with a soft paint brush or a cloth dampened with a mild detergent and water solu tion A cotton tipped applicator is useful for cleaning in narrow spaces SECTION 4 M...

Page 19: ...or code for capacitors depends upon manufacturer and capacitor type May not be present in some cases For capacitance of 10 pF or less 4 2 Fig 4 1 Color code for resistors and ceramic capacitors EIA co...

Page 20: ...pe and check for a free running trace If part of the readout is miss ing or incorrect check the Type 7A16 readout circuit using the Circuit Description Section 3 and the diagram in Section 8 Refer to...

Page 21: ...ch as unsoldered connections broken wires damaged components etc 5 Isolate Trouble to a Circuit To isolate a trouble to a circuit note the trouble symptom The symptom often indi cates the circuit in w...

Page 22: ...ecking continuity with an ohmmeter Shorted or partially shorted inductors can usually be found by checking the waveform response when high frequency signals are passed through the CAUTION 0 Do not use...

Page 23: ...yond the circuit board and clean off any residual flux with a flux removing solvent Be careful that the solvent does not re move any printing from the circuit board Metal Terminals When soldering meta...

Page 24: ...ounting screws 3 Remove the screw holding the faulty switch assembly Fig 4 4 Electrode configuration for transistors in this instrument l Remove the attenuator cover CAUTION Maintenance Type 7A16 0200...

Page 25: ...t operation Circuit Board Square Pin Replacement If the circuit board pins are damaged or broken a field replacement kit Tektronix Part Number 040 0542 00 containing the necessary parts and a replacem...

Page 26: ...t red 0175 ER182 8172 Cc d J 8 141 R 137 8177 R 154 8156 cc R1 33 C133 wM cn c 11N NN UU UU x cc 8181 LR140 Brn __ Red bll R61 C I Rf 1 R80 R60 C52b 82 cc H 060 168 R rB R68 I n0 OSIO ti7c1 5 R73 q 7...

Page 27: ...Maintenance Type 7A16 4 1 0 Fig 4 6 Main amplifier circuit board rear...

Page 28: ...e make each adjustment to the exact setting even if the CHECK is within the allowable tolerance NOTE Limits tolerances and waveforms in this procedure are given as calibration guides and should not be...

Page 29: ...ctor GR Tektronix Part Number 017 0081 00 18 50 ohm Feedthrough Termination Tektronix Part Num ber 011 0049 01 2 each 19 1OX Attenuator BNC connectors Tektronix Part Num ber 011 0059 01 2 each 20 15 p...

Page 30: ...Megahertz Bandwidth Limiting Page 5 11 Requirement 3 dB at 20 megahertz within 3 mega hertz Performance Correct Incorrect E 22 Check Overall Noise Level Tangentially Page 5 11 General Requirement 0 1...

Page 31: ...r minimum movement of trace as VARI ABLE control is rotated Intensity cow Calibrator 3 Check Step Attenuator Range Rate 1 kHz Volts 40 mV a Turn STEP ATTEN BAL adjustment fully clockwise and Vertical...

Page 32: ...Fig 5 1 Test equipment required for steps 8 through 12 Performance Check Calibration Type 7A16 b Set the oscilloscope calibrator to 40 mV and connect a BNC cable from the calibrator output to the Typ...

Page 33: ...SITION control b Connect the extender trigger cables to the signal jacks and terminate the signal cables into 50 ohms c CHECK The trace must be within one division of grati cule center 11 Check Trigge...

Page 34: ...ch to DC 14 Adjust Volts Division Series and Shunt Compensation a Using Table 5 2 as a guide check the CRT display at each VOLT DIV setting and adjust for best square leading corner and flat top on th...

Page 35: ...least aberrations 5 8 Adjustment Adjust For INTERACTION Perform steps 16 and 17 Fig 5 3 Test equipment required for steps 15 16 and 17 16 Adjust High Frequency Compensation 10 mV a Equipment setup as...

Page 36: ...alibration aids only and are not instru ment specifications 19 Check Upper Bandwidth 3 dB Point a Set the VOLTS DIV to l0 mV and COUPLING to DC b Connect the constant amplitude generator 067 0532 00 t...

Page 37: ...eater if a Type 7504 oscilloscope is used check that the frequency is 90 MHz or greater 5 10 NOTE Fig 5 6 Noise Tangentially Measured A CRT display show ing noise and free running square wave B CRT di...

Page 38: ...oise Level Tangentially a Set the VOLTS DIV to 5 mV and free run the time base EXAMPLE Performance Check Calibration Type 7A16 b Connect the Type 106 fast rise output through a GR to BNC adapter BNC c...

Page 39: ...ystyrene EMC electrolytic metal cased prec precision EMT electrolytic metal tubular PT paper tubular ext external PTM paper or plastic tubular molded F I focus and intensity RHB round head brass FHB f...

Page 40: ...g information in your order Part number instrument type or number serial or model number and modification number if applicable If a part you have ordered has been replaced with a new or improved part...

Page 41: ...mbly 1OX 6 3 ATTENUATOR STRIP Assembly 25X 6 3 ATTENUATOR STRIP Assembly 50X 6 3 ATTENUATOR STRIP Assembly 10OX 6 4 ATTENUATOR STRIP Assembly 250X 6 4 AC DC GND RELAY Circuit Board Assembly 6 5 VERTIC...

Page 42: ...00 V 1 C200 281 0697 00 5000 pF Cer 100 V 100 0 Connector Jl 131 0725 01 BNC receptacle electrical Semiconductor Device Diode CR210 152 0185 00 Silicon Replaceable by 1N4152 Inductors L4 120 0382 00 T...

Page 43: ...00 6 2 Ckt No Tektronix Part No Serial Model No Eff Disc Description 307 1001 00 Complete Attenuator Strip Capacitor C54 Resistor R54 ATTENUATOR STRIP Assembly 2 1 s X 307 1002 00 Complete Attenuator...

Page 44: ...ctrical Parts List Type 7A16 6 3 Ckt No Tektronix Part No Serial Model No Eff Disc Description 307 1004 00 Complete Attenuator Strip Capacitors C8A7 C8137 C8C7 Resistors R8A7 R8137 R8C7 ATTENUATOR STR...

Page 45: ...307 1008 00 6 4 Capacitors Resistors Ckt No Tektronix Part No ATTENUATOR STRIP Assembly 50 X cont Serial Model No Eff Disc Description Resistors R1 0A1 R10B1o R10C1o ATTENUATOR STRIP Assembly 100 X 30...

Page 46: ...embly 670 1113 00 B010100 B019999 Complete Board 670 1113 01 B020000 B029999 Complete Board 670 1113 02 B030000 B039999 Complete Board 670 1113 03 B040000 B049999 Complete Board 670 1113 04 B050000 B0...

Page 47: ...C109 281 0122 00 2 5 9 pF Var Cer 100 V C111 281 0122 00 2 5 9 pF Var Cer 100v C112 281 0601 00 7 5 pF Cer 500 V 0 5 pF C124 283 0077 00 330 pF Cer 500 V 5 C125 283 0065 00 0 001 t F Cer 100 V 5 C130...

Page 48: ...13060000 Silicon Replaceable by 1 N4152 CR224 152 0185 00 Silicon Replaceable by 1N4152 CR226 152 0185 00 Silicon Replaceable by 1N4152 CR227 152 0185 00 Silicon Replaceable by 1N4152 CR228 152 0185 0...

Page 49: ...ilicon NPN TO 72 MM1606 Q165 151 0212 00 Silicon Tek Spec Q170 151 0259 00 13010100 B039999 Silicon Selected from 2N3563 Q170 151 0269 00 13040000 Silicon Selected from SE3005 Q175 151 0212 00 Silicon...

Page 50: ...W Prec 1 R73 321 0186 00 845 52 8 W Prec 1 R74 321 0177 00 681 52 8 W Prec 1 R80 321 0062 00 43 2 52 8 W Prec 1 R82 317 0200 00 20 52 W 5 R84 321 0114 00 13010100 13019999 150 52 W Prec 1 R84 321 009...

Page 51: ...i2 2 W Prec 1 R138 321 0062 00 43 212 e W Prec 1 Rl41 323 0167 00 53612 2 W Prec 1 R142 321 0135 00 24912 s W Prec 1 R143 323 0146 00 32412 2 W Prec 1 R145 321 0062 00 43 212 s W Prec 1 R150 321 0085...

Page 52: ...321 0062 00 43 212 8 W Prec 1 R200 315 0184 00 180 ka 4 W 5 R202 322 0223 00 2 05 kQ 4 W Prec 1 R204 321 0299 00 12 7 ka 8 W Prec 1 R205 321 0344 00 37 4 kit 8 W Prec 6 R206 315 0753 00 75 ka 4 W 5 R2...

Page 53: ...69999 Pushbutton INVERT 51181 670 1125 01 13070000 Pushbutton INVERT 670 1124 00 670 1124 01 B010100 B070000 B069999 Complete Board Complete Board Bulb DS3 150 0057 01 8010100 13069999 Incandescent 71...

Page 54: ...he following special symbols are used on the diagrams 0 Screwdriver adjustment Front or rear panel control or connector Refers to the indicated diagram Connection soldered to circuit board Blue line e...

Page 55: ...7AIro AMPLIFIER...

Page 56: ...W r O W _v D O D 3...

Page 57: ...C Volts Div 10 mV Type 71371 Controls A horizontal compartment Level Slope 0 Triggering Mode P P Auto Coupling AC Source Ext Magnifier X1 Time Div 1 ms Variable Cal In Ext Trig In Positive trigger sig...

Page 58: ...IS JC40 500 100 0 14 C28 47 Q40 0 7 R38 150 0 08 Q Z0B R31 i5V R43 1 8K 4 7K 15V C35 R30 i 19 75 R45 47 Q_50 C55 100 DAM PIN G 2 MIL R18 560 C18 0 2 1 5 5 IY_ OV 7 93 R55 500 1 SEE PARTS LIST FOR SEM...

Page 59: ...81 REFERENCE DIAGRAMS 2O ATTENUATORS OUTPUT AMPLIFIER O4 SWITCHING E INTERCONNECTING PLUG 9 1 2 K65 S65 VARIABLE GAL T I O I i ID I I 15V L97 IT L76 0 5 H P6 3I 15V 10 MV DIV C77 14 INPUT AMPLIFIER 04...

Page 60: ...25X 7A16 AMPLIFIER...

Page 61: ...2 2 X 50X 2 6 175 1 128 980K Ri08 75 C 7A t 2 6 7 5 Cii l 2 6 7 5 Ci1 fi...

Page 62: ...ATTENUATORS WLB Laos...

Page 63: ...i5v iSV R106 iK R108 25 O R158 25 NO Nv iO V DI V FROM S10 SELF CANCELING 1 0NC N 0 I I I 10 V DIV I INVERT POLARITY C112 7 5 R112 46 4 C162 7 5 Rftc2 46 4 NO Y Y 5V LIGHTS COMMON C124 330 10 FROM K...

Page 64: ...OLTAGES and WAVEFORMS brained under conditions given on diagram O except as tollaws VOLTAGES only _ nasignal applied SWITCHING t INTERCONNECTING PLUG 15V L14O 4T Ri4i 536 C145 5 6 Q140 3 22 Ci38 10 Ri...

Page 65: ...RENCE DIAGRAMS INPUT AMPLIFIER OUTPUT AMPLIFIER 5F E PARTS L157 FOR SEMIGONOUGTOR 7AIG AMPLIFIER SPRING RETURN Q 200 15V R204 12 7 TO TO KI10 K105 t 15V K160 K155 P6 2 PS 4 8 PT Z 0 4 O 4 O O O O O R...

Page 66: ...GHTS COMMON R235 TP 2 7 PARTIAL VERT CAL AMPUPIER bOARo 0 1 SWITCHING INTERCONNECTING PLUG 5Ov IB19 h9 1069 A10 R X239 47 SIGNAL All SIGNAL 611 3 A12 6I2 TRIGGER f A 13 TRIGGER 613 TP C234 L2E6 565 L...

Page 67: ...TYPE 7A16 AMPLIFIER FIGURE 1 EXPLOC Po 90 s s 0 P 6...

Page 68: ...XPLODED...

Page 69: ...ust be purchased separately unless otherwise specified PARTS ORDERING INFORMATION Replacement parts are available from or through your local Tektronix Inc Field Office or representative Changes to Tek...

Page 70: ...Type 7A16 INDEX OF MECHANICAL PARTS ILLUSTRATION Title Location reverse side of Figure 1 Exploded Switching Interconnecting Plug Diagram...

Page 71: ...0 250 inch OD 12 384 0724 00 1 SHAFT INDEX ASSEMBLY mounting hardware not included w shaft index assembly 13 210 0840 00 1 WASHER flat 0 390 ID x 16 inch OD 14 210 0012 00 1 WASHER lock internal 3 8...

Page 72: ...36 131 0675 00 1 CONTACT electrical mounting hardware not included w assembly 37 211 0179 00 2 SCREW 4 40 x 0 125 inch PHS 210 1002 00 4 WASHER flat 0 125 ID x 0 250 inch OD 38 401 0051 00 1 BEARING...

Page 73: ...214 1061 00 1 SPRING flat sliding ground 68 214 1054 00 1 SPRING flat latch detent 69 105 0075 00 1 BOLT latch plastic 70 670 1124 00 1 ASSEMBLY circuit board AC DC GND assembly includes 71 131 0589...

Page 74: ...2 RESISTOR variable mounting hardware for each not included w resistor 89 210 0046 00 1 WASHER lock internal 0 261 ID x 0 400 inch OD 90 210 0583 00 1 NUT hex 1 4 32 x 5 16 inch 91 407 0644 00 1 BRACK...

Page 75: ...ight 131 0708 00 2 CONNECTOR terminal straight 110 352 0164 00 2 HOLDER terminal connector straight 6 wire 111 352 0165 00 1 HOLDER terminal connector straight 7 wire 112 352 0197 00 4 HOLD R terminal...

Page 76: ...we t go thes d onge immediately into printed mamma Hence r manual may contain new chango information at A Angle change may Ofd several sadiom Sedgm of the manuot are often printed at Merent theta a s...

Page 77: ...L PARTS LIST AND SCHEMATIC CORRECTION M16 414 770 VERTICAL AMPLIFIER Circuit Board Assembly CHANGE TO R64 321 0076 00 60 4 2 1 8 W MF 17 R65 321 0024 00 17 4 2 1 8 W MF 17 R84 321 0076 00 60 4 2 1 8 W...

Page 78: ...01 rry 576 1125 01 670 1125 01 670 1126 01 670 112b Ql Switch Circuit Board Al ly Complete Board Pushbutton Switch Circuit Board Assembly Complete Board Pushbutton Switch Circuit Board Assembly Comple...

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