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{{Oscilloscope Sidebar | | {{Oscilloscope Sidebar | ||
|manufacturer=Tektronix | |||
image=Rm 565 cal signal.jpg | | |series=560-series scopes | ||
caption=Tektronix RM 565 | | |model=565 | ||
introduced=1962 | | |summary=10 MHz dual-beam scope | ||
discontinued=1974 | |image=Rm 565 cal signal.jpg | ||
|caption=Tektronix RM 565 | |||
manuals= | |introduced=1962 | ||
* [ | |discontinued=1974 | ||
* [ | |manuals= | ||
* [[Media:070-269.pdf|Tektronix 565 Manual]] | |||
* [[Media:Tek 565 preliminary 070-269.pdf|Tektronix 565 Preliminary Manual]] | |||
* [[Media:Tek 565 irb.pdf|Tektronix 565 Instrument Reference Book]] (OCR) | |||
* [[Media:Tek 565 fcp.pdf|Tektronix 564 Factory Calibration Procedure]] | |||
}} | }} | ||
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 [[560-series plug-ins|560-series vertical plug-ins]]. | ||
It was [[introduced in | It was [[introduced in 1962]]. | ||
The 1974 catalog was the last one that included the 565. | 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 other [[560-series scopes]] in the fact that it (the mainframe) has built-in trigger, sweep, and horizontal amplifier circuits. | ||
other [[560-series scopes]] in the fact that it (the mainframe) has built-in trigger, sweep, and horizontal amplifier circuits. | |||
{{BeginSpecs}} | |||
{{Spec|Bandwidth|up to 10 MHz determined by vertical plug-ins}} | |||
{{Spec|Sweep|1 μs/div to 5 s/Div, 1−2−5, ×10 magnifier, and variable }} | |||
{{Spec|Sweep delay| 10 μs to 50 seconds}} | |||
{{Spec|Power|600 W max. including plug-ins}} | |||
Power | {{Spec|Calibrator|1 kHz square wave, 1 mV to 100 V in decade steps}} | ||
{{Spec|CRT| [[T5650]], cathode at −3.9 kV, no post-deflection acceleration}} | |||
{{EndSpecs}} | |||
==Circuits== | ==Circuits== | ||
CRT acceleration voltage is produced by a transformer driving a single [[1X2]] rectifier tube. | |||
===Vertical Signal Path=== | ===Vertical Signal Path=== | ||
| Line 34: | Line 37: | ||
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 45: | Line 48: | ||
In all other [[560-series scopes]], those functions are performed by the horizontal plug-in. | 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 then is discriminated by a [[6DJ8]]-based Schmitt trigger. | ||
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. | |||
The 565 is also unusual in that it employs a [[tunnel diodes|tunnel diode]] (D845, a [[TD4]], which is equivalent to the [[1N3718]]) in the trace intensification circuit. | The 565 is also unusual in that it employs a [[tunnel diodes|tunnel diode]] | ||
(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, | 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. | kick it the other way and it turns off and stays off. | ||
which is a 2N404 germanium PNP transistor. | The tunnel diode is DC-coupled to the base-emitter junction of Q843, | ||
to be germanium. | which is a 2N404 germanium PNP transistor. | ||
Contrast this with the timebase A trigger of the [[585|585A]], which uses a tunnel diode AC-coupled to a transistor, which | Because the tunnel diode and transistor are DC-coupled, the transistor needs to be germanium. | ||
makes the forward voltage of the transistor's base-emitter junction irrelevant. | 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 === | === Calibrator === | ||
| Line 63: | Line 67: | ||
=== Auxiliary Power Jack === | === Auxiliary Power Jack === | ||
The 565 has | 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. | The pinout and specs are shown below. | ||
| Line 69: | Line 73: | ||
The 565 appears similar to the [[556]], but is different in many ways. | The 565 appears similar to the [[556]], but is different in many ways. | ||
The 556 uses tunnel diodes for triggering, while the 565 uses tubes. | The 556 uses tunnel diodes for triggering, while the 565 uses tubes. | ||
The 556 uses [[letter-series and 1-series plug-ins]] | The 556 uses [[letter-series and 1-series plug-ins]] while the 565 uses 560-series plug-ins. | ||
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 == | == Mechanical == | ||
Benchtop (565) and rackmount versions (RM565) were made. | Benchtop (565) and rackmount versions (RM565) were made. | ||
The benchtop version has the following dimensions: | |||
* Width: 17 inches | * Width: 17 inches | ||
* Height: 13.5 inches | * Height: 13.5 inches | ||
| Line 116: | Line 121: | ||
Tek rm565 gray8.jpg|Gray RM565 | Tek rm565 gray8.jpg|Gray RM565 | ||
Tek rm565 gray9.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 specs.png|J780 Specs | ||
Tek 565 j780 pinout.png|J780 Pinout | 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> | ||
==Components== | |||
{{Parts|565}} | |||
[[Category:560 series scopes]] | [[Category:560 series scopes]] | ||
[[Category:Dual beam scopes]] | [[Category:Dual beam scopes]] | ||
[[Category:Introduced in | [[Category:Introduced in 1962]] | ||