Related Manuals for Tektronix A Series
Summary of Contents for Tektronix A Series
- Page 3 TYPE 514 D SERIES A CATHODE-RAY OSCILLOSCOPE INSTRUCTION MANUAL Manufacturers of Cathode-Ray and Video Test instruments SUNSET HIGHWAY AND BARNES ROAD P. O. BOX 831 - PORTLAND 7, OREGON, U. S. A. PHONE: CYpress 2-2611 CABLES: TEKTRONIX...
- Page 5 General Description cm d c or peak to peak ac. Band width, d c to 800 kc (3 db down at 800 kc). The Tektronix Type 514D Cathode Ray Oscillo scope is a self-contained general purpose precision Vertical Amplifier instrument, designed specifically to incorporate the 4 stage.
- Page 6 Connection to CRT Cathode AC-DC Switch to provide optional direct or Via 0.1 µ. capacitor. RC=. 0 12 sec. capacitive coupling of the vertical amplifier. Only capacitive coupling Accelerating voltage on cathode-ray tube, 3 kv regu is available for .03 V to .3 V sensi lated.
- Page 7 Switch determining source and pol - TRIGGER SWEEP Binding post connected to sweep arity of trigger voltage. OUTPUT generator via cathode follower. SELECTOR Potentiometer controlling the bias TRIGGER + GATE Binding post for connection to the applied to the trigger-amplifier tube AMPL.
- Page 9 SECTION II 5. Adjust VERT. POSITION, HOR. POSITION, ASTIGMATISM and FOCUS until a sharply fo cussed spot is obtained at the left center of the screen. CAUTION — DO NOT ALLOW THIS Operating Instructions SPOT TO BE EXCESSIVELY BRIGHT OR REMAIN FOR LONG IN ONE POSI ...
- Page 10 slight ly at different levels of intensity. In general, it NOTE — When using the internal ( + SIG. or is desirable to use the minimum INTENSITY set — SIG.) trigger impulses to view funda ting required for adequate observation of the trace. mental frequencies above about 2 m c , it will This will vary with ambient light conditions, writing be necessary to progressively advance the...
- Page 11 instance the rate of fall of the end of a fairly long pulse. ber of microseconds for a horizontal deflection of 1 cm can be determined easily by multiplying the In the Type 514, the sweep magnifier circuit makes it SWEEP TIME setting by the sum of the SWEEP possible to expand any desired 20 per cent of the TIME MULTIPLIER dial readings.
- Page 12 Vertical Deflection Adjustments or similar device. To observe positive pulses, set the VERT. POSITION control so that the undeflected (zero-signal) trace coincides with the — 2-cm graticule line. For negative pulses, use a + 2-cm setting. ignal nput onnection The sensitivity with direct coupling is limited to Dual inputs, provided by two UHF connectors, 0.3 volt per cm.
- Page 13 ADJUST X 1 and X2 located at the rear of the Type irect onnection to eflection lates 514D. After making a direct connection of the ver To allow direct connection to be made to the deflec tical-deflection plates, the average potential of the tion plates with low capacitance, banana jacks are horizonal plates should be adjusted to correspond.
- Page 15 SECTION III adjusted to equal the average output voltage of the vertical amplifier. The astigmatism-voltage regulator provides the proper voltage for anode two of the CRT so the focus will remain sharp over the whole CRT screen. The vertical amplifier channel, shown in the lower Circuit Description portion of the block diagram, consists essentially of a preamplifier, delay line, and output amplifier, with ap ...
- Page 16 duration is provided by selection of timing capacitors rigger oupling iode on the SWEEP TIME switch, SW 102, and the varia The negative trigger signal from the plate of V102 tion of timing resistors, R124 and R150B. R124 is a is applied to the plate of negative-going multivibrator, step switch calibrated in units of one, and R1 5 0B is V104, by means of coupling diode V103.
- Page 17 only the first 10 per cent or less of the charging volt dc level is provided by screwdriver adjustments age. When the multivibrator returns to its quiescent R193.1 and R194.1. state, the positive pulse that occurs at the plate of The dc level-setting tubes permit the current V104 raises the grid of V109 positive, the plate of through dropping resistors R187 and R188 to be...
- Page 18 V502A is an amplifier whose grid is dc coupled to R40.1 and R41.2 so that it is at the same potential as V502B grid, and whose cathode is also returned to the cathode of V4A. When this adjustment is cor —...
- Page 19 the previously described high-voltage secondary on ower upply T801 to provide biasing voltage for the unblanking The negative 140-volt supply is stabilized by an circuit. This winding is tightly coupled to the wind OD3 gas regulator tube supplied with a nominal ing of the regulated supply and its output voltage 300 volts from the plate of V211, which rectifies the therefore follows the regulated portion quite closely.
- Page 21 TEKTRONIX instruments as soon as possible. As a will result without adequate air circulation. result of constant improvement TEKTRONIX in...
- Page 22 WITH THE CASE REMOVED, GREAT weep CARE SHOULD BE TAKEN. USE ONLY DC Output Level INSULATED TOOLS, STAND ON A To obtain proper CRT focus, the average potentials DRY FLOOR, AND IF POSSIBLE KEEP of the horizontal- and vertical-deflection plates must ONE HAND IN YOUR POCKET.
- Page 23 moving the instrument case. Set the VERTICAL IN tic of C5 and associated circuits will have a lo wer fre PUT switch to TEST 50, CAL VOLTAGE dial quency of cutoff with the added 9-megohm series accurately to 5, CAL DUTY CYCLE full clockwise. resistor of the probe.
- Page 24 NOTE — Greater accuracy in the adjustment inadvertently used to correct for these deficiencies. of C24 and C27 may be obtained by pro The Tektronix Type 104A and Type 105 Square Wave viding increased signal input and therefore Generators provide a suitable signal.
- Page 25 DEFL SENS control, and keep the image centered Delay Network vertically. The factory procedure which gives the The delay network is a 24-section artificial trans flattest frequency response consistent with satisfac mission line providing a signal delay of ¼ microsec tory transient response is as follows : ond.
- Page 26 590 ohms, replace with a composition resistor se wave having a rise time of .03 microsecond or less. lected to be within these limits. The Tektronix Type 104A or Type 105 Square Wave Generators provide a suitable signal. Preamplifier H-F Response Set the VERT DEFL SENS at either the .03 to .1...
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Page 27: Warranty
IMPORTANT Include INSTRUMENT TYPE and SERIAL NUMBER in all cor- respondence regarding any Tektronix instrument. The serial number stamped in the instruction manual must match the instrument serial number if parts are to be ordered from the manual. Observance of the above precautions will assure your receipt of the correct replacement parts with a minimum of delay. -
Page 35: Sweep Circuits
ABBREVIATIONS mill i or 10 -3 ceramic Comp Ω composition electrolytic, metal cased paper, metal cased farad Poly polystyrene guaranteed minimum value Prec precision henry paper tubular к kilo or 10 3 working volts d c mega or 10 6 variable micro or 10 -6 watt... - Page 37 Fixed 500 V C117 39 µµf 7- 45 µµf 500 V C118 Var. 600 V . 001 µµf Fixed Selected C119 4 00 V C12 0 .01 µf Fixed Selected 400 V C121 . 1 µf Fixed Selected 600 V 1 µf C122 Fixed...
- Page 39 ½ w 560 Ω R105.1 Fixed Comp ½ w 47 Ω R106 Comp Fixed ½ w 330 Ω Fixed R107 Comp ½ w R108.1 120 Ω Fixed Comp ½ w 500 k Comp R109 TRIGGER AMPL. ½ w 1.5 meg R110 Fixed Comp...
- Page 41 R126 Fixed Comp 3.3 meg ½ w R13 4 47 Ω Fixed Comp ½ w R135 Coup 47 Ω Fixed ½ w ½ w 100 Ω Comp Fixed R137 R138.1 Fixed Coup 2.7 k R138.2 2.2 k Comp Fixed 120 k Fixed Coup R139...
- Page 43 ½ w R159 470 Ω Fixed Conp 10 % R16 0 10 k Comp Fixed R161 10 k Fixed Comp R162 4.7 k Comp Fixed ½ w R163 330 k Fixed Comp ½ w R163.1 180 k Fixed Comp R16 4 500 k Comp ASTIGMATISM...
- Page 45 R178 Fixed Comp 4.7 k ½ w Comp 2.2 к Fixed R179 ½ w R180.1 270 k Fixed Comp ½ w 820 k Comp R181 Fixed ½ w R181.1 120 k Fixed Comp ½ w 100 k R182 Comp HOR. POSITION ½...
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Page 47: Trigger Selector
SWITCHES 5 position Rotary TRIGGER SELECTOR SW101 2 wafer SWEEP TIME (front) 6 position Rotary SW1 0 2A,B,C 3 wafer SWEEP TIME (rear) SW1 0 2D,E 2 wafer 6 position Rotary 2 wafer 10 position Rotary SWEEP TIME SW1 0 3 SW104 Double Pole Single Throw... - Page 51 PARTS LIST ABBREVIATIONS milli or 10 -3 Cer. Ceramic Comp. Composition Ω Paper, Metal Cased Electrolytic, Metal Cased Polystyrene farad Poly. Precision Guaranteed Minimum Value Prec. Paper Tubular henry kilo or 10 3 working volts d c к mega or 10 6 Var.
- Page 53 INDUCTORS 2.9-5.2 µh Var. CV292 2.9-5.2 µh Var. CV292 5.7 µh Fixed CF572 1 µh Fixed CF102 RESISTORS 1 meg 1/2 w Fixed Prec. R23.1 47 Ω 1/2 w Fixed Comp. 1/2 w Fixed Comp. R24. 1 10 k Fixed Comp.
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Page 57: Vertical Amplifier
PARTS LIST ABBREVIATIONS Cer. milli or 10 -3 Ceramic Comp. Composition Ω Electrolytic, Metal Cased Paper, Metal Cased farad Poly. Polystyrene Guaranteed Minimum Value Prec. Precision henry Paper Tubular kilo or 10 working volts d c mega or 10 Var. Variable micro or 1 0 -6 µ... - Page 59 RESISTORS 1 meg 1/2 w Fixed Prec. 1 meg 1/2 w Fixed Comp. R30. 1 47 Ω 1/2 w Fixed Comp. 27 Ω Fixed Comp. 18 k Fixed Comp. R40. 1 Var. 20%* VERT. AMP. ATTEN. R40.2 820 Ω Fixed Comp.
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Page 61: Delay Line
6 80 Ω 1/2 w Fixed Comp. 200 Ω 10 w Fixed 1.5 k Fixed 22 k Fixed Comp. SWITCHES 5 wafer 11 position Rotary VERT. INPUT 6 wafer 7 position Rotary VERT. DEFL. SENS. 2 wafer 2 position Rotary AC DC VACUUM TUBE COMPLEMENT 1/2 12AT7... - Page 65 PARTS LIST ABBREVIATIONS milli or 10 -3 Cer. Ceramic Comp. Composition Ω Electrolytic, Metal Cased Paper, Metal Cased farad Poly. Polystyrene Guaranteed Minimum Value Prec. Precision henry Paper Tubular kilo or 10 3 working volts d c mega or 10 6 Var.
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Page 69: Power Supply
ABBREVIATIONS milli or 10 -3 ceramic composition Comp paper, metal cased electrolytic, metal cased polystyrene Poly farad precision Prec guaranteed- minimum value paper tubular henry working volts d c kilo or 10 3 к variable mega or 10 6 watt micro or 10 -6 µ... - Page 71 R217 1 meg Fixed -5% -3% Comp ½ w R21 0 4 70 k Fixed Comp 1.5 k R219.1 25 w Fixed R219.2 1.5 k 25 w Fixed R220 82 k Fixed Comp 10 % R221 22 k Fixed Comp ½...
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Page 73: Vacuum Tubes
TRANSFORMER T1 0 1 T514PB1 Plate and heater 117/234 vac, 50/60 cycle Primary: Secondaries: 282-0-282 vac 300 ma 282-0-282 vac 30 ma 5 vac 6 amp 6.3 vac 6 amp 6.3 vac 6 amp 6.3 vac 6 amp 6.3 vac 1.7 amp 6.3 vac 7 amp... - Page 77 ABBREVIATIONS milli or 10 -3 ceramic composition Comp paper, metal cased electrolytic, metal cased polystyrene Poly farad precision Prec guaranteed minimum value paper tubular henry working volts d c kilo or 10 3 variable mega or 10 6 watt micro or 10 -6 µ...
- Page 79 R80 4 Unassigned R8 0 5 ½ w 100 Ω Fixed Comp ½ w R806 100 k Fixed Comp ½ w Fixed Comp R807 R810 1.8 meg Fixed Comp ½ w R811 Comp 2 meg ADJ. TO - 1500 V R812 10 meg Fixed...
- Page 81 VACUUM TUBES 6AS5 Series Regulator V213 V2 14 DC Amplifier 12AU7 HV Oscillator V215 6AQ5 V80 4 56 4 2 HV Rectifier V80 5 564 2 HV Rectifier V8 06 564 2 HV Rectifier...