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{{Oscilloscope Sidebar | | {{Oscilloscope Sidebar | | ||
title=Tektronix 565 | | title=Tektronix 565 | | ||
image= | image=Rm 565 cal signal.jpg | | ||
caption=Tektronix 565 | | caption=Tektronix RM 565 | | ||
introduced= | introduced=1962 | | ||
discontinued= | discontinued=1974 | | ||
summary=10 MHz dual-beam scope | | |||
summary= | |||
manuals= | manuals= | ||
* [http://bama.edebris.com/download/tek/565/565.djvu Tektronix 565 Manual (DjVu)] | * [http://bama.edebris.com/download/tek/565/565.djvu Tektronix 565 Manual (DjVu)] | ||
* [http://w140.com/tek_565.pdf Tektronix 565 Manual (PDF)] | * [http://w140.com/tek_565.pdf Tektronix 565 Manual (PDF)] | ||
* [[Media:070-269.pdf|Tektronix 565 Preliminary Manual]] | |||
* [[Media:Tek 565 irb.pdf|Tektronix 565 Instrument Reference Book (PDF, OCR)]] | |||
* [[Media:Tek 565 fcp no ocr.pdf|Tektronix 564 Factory Calibration Procedure (PDF, needs OCR)]] | |||
}} | }} | ||
The '''Tektronix Type 565''' is a [[dual-beam scopes|dual-beam scope]] that takes two [[560-series plug-ins|560-series vertical plug-ins]]. | |||
The '''Tektronix Type 565''' is a [[dual-beam scopes|dual-beam scope]] that takes two [[ | It was [[introduced in 1962]]. | ||
It was [[introduced in | The 1974 catalog was the last one that included the 565. | ||
A rackmount version, the RM565, was also produced. Aside from being dual-beam, the 565 is unusual among the | A rackmount version, the RM565, was also produced. Aside from being dual-beam, the 565 is unusual among the | ||
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==Specifications== | ==Specifications== | ||
The vertical characteristics are mostly determined by the vertical plug-ins. | |||
The fastest sweep is 1 μs/div (100 ns/div with 10x horizontal magnification enabled). | |||
The sweep delay can be adjusted over a range from 10 μs to 50 seconds. | |||
Power consumption, including plug-ins, is about 600 watts, maximum. | |||
The internal calibrator produces a 1 kHz square wave with amplitude selectable in decade steps from 1 mV to 100 V. | |||
==Circuits== | ==Circuits== | ||
The 565 uses the [[T5650]] CRT. | The 565 uses the [[T5650]] CRT. | ||
There is no post-deflection acceleration. | |||
The CRT cathode is at −3.9 kV, which is produced by a transformer driving a single [[1X2]] rectifier tube. | |||
===Vertical Signal Path=== | ===Vertical Signal Path=== | ||
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The left plug-in bay is for the lower beam and the right plug-in bay is for the upper beam. | The left plug-in bay is for the lower beam and the right plug-in bay is for the upper beam. | ||
A 0. | A 0.7−3 pF trimmer capacitor is connected immediately behind each of the plug-in connectors, and allows | ||
for the mainframe to be calibrated so that plug-ins can be interchanged without requiring the | for the mainframe to be calibrated so that plug-ins can be interchanged without requiring the | ||
high-frequency compensation of the system to be readjusted. | high-frequency compensation of the system to be readjusted. | ||
| Line 37: | Line 48: | ||
=== Trigger and Sweep === | === Trigger and Sweep === | ||
The 565 is the only 560-series mainframe that has built-in trigger, timebase, and horizontal amplifier circuitry. | |||
In all other [[560-series scopes]], those functions are performed by the horizontal plug-in. | |||
The triggering signal comes from pin 11 on the plug-ins, is amplified by a [[12AT7]]-based cathode follower, | The triggering signal comes from pin 11 on the plug-ins, is amplified by a [[12AT7]]-based cathode follower, | ||
and sent to "TRIGGER" switches. From there, the trigger signal is sent through a [[6DJ8]]-based differential amplifier | and sent to "TRIGGER" switches. From there, the trigger signal is sent through a [[6DJ8]]-based differential amplifier, and then is discriminated by a [[6DJ8]]-based Schmitt trigger. | ||
and then is discriminated by a [[6DJ8]]-based Schmitt trigger. | |||
The 565 is also unusual in that it employs a [[tunnel diodes|tunnel diode]] | |||
The | (D845, a [[TD4]], which is equivalent to the [[1N3718]]) in the trace intensification circuit. | ||
The tunnel diode forms a bistable multivibrator: kick it one way and it turns on and stays on, | |||
kick it the other way and it turns off and stays off. | |||
The tunnel diode is DC-coupled to the base-emitter junction of Q843, | |||
which is a 2N404 germanium PNP transistor. | |||
Because the tunnel diode and transistor are DC-coupled, the transistor needs to be germanium. | |||
This is one of the rare cases when a failed germanium transistor cannot be replaced with a silicon part. | |||
Contrast this with the timebase A trigger of the [[585|585A]], which uses a tunnel diode AC-coupled to a transistor, | |||
which makes the forward voltage of the transistor's base-emitter junction irrelevant. | |||
=== Calibrator === | |||
The calibrator is an astable multivibrator formed by one half of a [[12AT7]] and a [[6AU6]]. | |||
The | |||
The other half of the 12AT7 serves as the output cathode follower for the calibrator. | The other half of the 12AT7 serves as the output cathode follower for the calibrator. | ||
=== Auxiliary Power Jack === | |||
The 565 has an [[Amphenol 165 series connectors|Amphenol 165 series connector]] (J780) on the rear panel, | |||
which allows the 565 to provide power to external devices. | |||
The pinout and specs are shown below. | |||
== Comparison with the [[556]] == | == Comparison with the [[556]] == | ||
| Line 57: | Line 81: | ||
Moreover, the bandwidth of the 556 is specified as 50 MHz, while the bandwidth of the 565 is specified as 10 MHz. | Moreover, the bandwidth of the 556 is specified as 50 MHz, while the bandwidth of the 565 is specified as 10 MHz. | ||
Subjectively, the trace of the 565 is very sharp, sharper than the trace of the 556. | Subjectively, the trace of the 565 is very sharp, sharper than the trace of the 556. | ||
== Mechanical == | |||
Benchtop (565) and rackmount versions (RM565) were made. | |||
The benchtop version has the following dimensions: | |||
* Width: 17 inches | |||
* Height: 13.5 inches | |||
* Depth: 23.375 inches | |||
* Weight: 67 pounds | |||
The RM565 weighs 80 pounds. | |||
==Pictures== | ==Pictures== | ||
<gallery> | <gallery> | ||
Rm565_1.jpg|Front from RM565 | |||
Rm565_2.jpg | |||
IMG 1213.JPG| Open 565 | |||
Wellenkino 565.jpg | |||
RM565_P7.jpg|RM565 with P7 CRT | |||
Tek 565 block.png|Block Diagram | |||
Tek 565 timebase a timing sw.png|Timebase 'A' Timing Switch | |||
Tek 565 timebase a trig.png|Timebase 'A' Trigger | |||
Tek 565 timebase a gen.png|Timebase 'A' Generator | |||
Tek 565 delay pickoff.png|Delay Pickoff | |||
Tek 565 timebase b trigger.png|Timebase 'B' Trigger | |||
Tek 565 timebase b generator.png|Timebase 'B' Generator | |||
Tek 565 timebase b timing sw.png|Timebase 'B' Timing Switch | |||
Tek 565 horiz display switching.png|Horizontal Display Switching | |||
Tek 565 lower horiz amp.png|Lower Horizontal Amp | |||
Tek 565 crt circuit.png|CRT Circuit | |||
Tek 565 plug-in connectors.png|Plug-in Connectors | |||
Tek 565 heater and power supply.png|Heater Wiring and Power Supply | |||
Tek 565 amplitude calibrator.png|Amplitude Calibrator | |||
Rm 565 front bottom internal.jpg | |||
Rm 565 bottom internal.jpg | |||
Rm 565 cal signal.jpg | |||
Tek565-crop.jpg | |||
Tek rm565 gray1.jpg|Gray RM565 | |||
Tek rm565 gray2.jpg|Gray RM565 | |||
Tek rm565 gray3.jpg|Gray RM565 | |||
Tek rm565 gray4.jpg|Gray RM565 | |||
Tek rm565 gray5.jpg|Gray RM565 | |||
Tek rm565 gray6.jpg|Gray RM565 | |||
Tek rm565 gray7.jpg|Gray RM565 | |||
Tek rm565 gray8.jpg|Gray RM565 | |||
Tek rm565 gray9.jpg|Gray RM565 | |||
Tek 565 j780.jpg|J780 on rear panel | |||
Tek 565 j780 specs.png|J780 Specs | |||
Tek 565 j780 pinout.png|J780 Pinout | |||
Tek rm565 top inside.jpg | |||
Tek rm565 hvps.jpg | |||
Tek rm565 hv rectifier.jpg | |||
Tek rm565 intensifier circuit.jpg | |||
Rm565 two trace2.jpg | |||
Tek rm565 top internal.jpg|top internal | |||
Tek rm565 right cover off.jpg|LV power supply tubes on the bottom, HV on the top, fan in the rear | |||
Tek rm565 bottom internal.jpg|bottom internal | |||
Tek rm565 rear.jpg|rear | |||
</gallery> | </gallery> | ||
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[[Category:Dual beam scopes]] | [[Category:Dual beam scopes]] | ||
[[Category:Introduced in 1962]] | |||
[[Category:Introduced in | |||