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(Bob Shand did the mechanical design on 560B series (see Tekscope May 1972)) |
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{{Oscilloscope Sidebar | | {{Oscilloscope Sidebar | ||
|manufacturer=Tektronix | |||
image=Tek 561b cal trace.jpg | | |series=560-series scopes | ||
summary=10(4) MHz "General Purpose Scope" | | |model=561 | ||
caption=Tektronix 561B | | |image=Tek 561b cal trace.jpg | ||
introduced=1961 | | |summary=10(4) MHz "General Purpose Scope" | ||
discontinued=1974 | | |caption=Tektronix 561B | ||
manuals= | |introduced=1961 | ||
* [ | |discontinued=1974 | ||
* [ | |designers=Bob Shand; | ||
|manuals= | |||
'''561, RM561''' | |||
* [[Media:070-261.pdf|Tektronix 561 Manual]] (PDF) | |||
* [[Media:070-289.pdf|Tektronix RM561 Manual]] (PDF, OCR) | |||
'''561A''' | |||
* [[Media:070-342.pdf|Tektronix 561A Manual]] (PDF) | |||
* [https://bama.edebris.com/download/tek/561a/561a.djvu Tektronix 561A Manual @ BAMA] (DjVu) | |||
'''561B, RM561A/B''' | |||
* [https://w140.com/mmm/tek-561b.pdf Tektronix 561B Manual (PDF)] | |||
* [[Media:TM 9-6625-963-14-1.pdf|Military Tektronix RM561A & RM561B Manual]] (PDF) | |||
* Tektronix RM561A & RM561B Manual @ BAMA: [https://bama.edebris.com/download/tek/561b/561b.djvu DjVu] / [https://bama.edebris.com/download/tek/561/561scope.pdf PDF] | |||
'''561S''' | |||
* [[Media:070-417.pdf|Tektronix 561S Manual]] (PDF) | |||
<small> | |||
'''Calibration''' | |||
* [[Media:Tek 561 fcp.pdf|Tektronix 561 Factory Calibration Procedure (PDF, needs OCR)]] | * [[Media:Tek 561 fcp.pdf|Tektronix 561 Factory Calibration Procedure (PDF, needs OCR)]] | ||
* [[Media:070-469.pdf|Tektronix 561A Calibration Procedure (PDF)]] | * [[Media:070-469.pdf|Tektronix 561A Calibration Procedure (PDF)]] | ||
* [[Media:Tek 561a fcp april 1967.pdf|Tektronix 561A Factory Calibration Procedure (PDF, needs OCR)]] | * [[Media:Tek 561a fcp april 1967.pdf|Tektronix 561A Factory Calibration Procedure (PDF, needs OCR)]] | ||
* [[Media:Tek 561a field recal proc sep 1962.pdf | Tektronix 561A Field Recalibration Procedure, September 1962 (PDF, needs OCR)]] | |||
* [[Media:Tek 561b fcp.pdf|Tektronix 561B Factory Calibration Procedure (PDF, needs OCR)]] | * [[Media:Tek 561b fcp.pdf|Tektronix 561B Factory Calibration Procedure (PDF, needs OCR)]] | ||
* [ | * [[Media:Tek 561s fcp jan 1964.pdf | Tektronix 561S Factory Calibration Procedure, January 1964 (PDF, needs OCR)]] | ||
* [http://w140.com/ | |||
'''Modifications''' | |||
* [[Media:Tektronix561_NO040267FieldModification.pdf | Tektronix 561 #040-267 Field Modification Instructions (PDF)]] | |||
* [[Media:Tektronix561_NO040288FieldModification.pdf | Tektronix 561 #040-288 Field Modification Instructions (PDF)]] | |||
* [[Media:Tektronix561_NO040347FieldModification.pdf | Tektronix 561 #040-347 Field Modification Instructions (PDF)]] | |||
* [[Media:Tek 561b mod 272c.pdf|Tektronix 561B Mod 272C]] | |||
'''Miscellaneous''' | |||
* [[Media:Tek 561A manufacturing memos late 1964.pdf]] | |||
* [http://w140.com/tek_561_irb.pdf Tektronix 561 Instrument Reference Book (OCR, PDF)] | |||
* [http://w140.com/tek_560_561_product_release.pdf Tektronix 560 and 561 Product Release (PDF)] | * [http://w140.com/tek_560_561_product_release.pdf Tektronix 560 and 561 Product Release (PDF)] | ||
</small> | |||
}} | }} | ||
The '''Tektronix 561''' is a [[560-series_scopes|560-series scope]] that was [[introduced in 1961]] and | The '''Tektronix 561''' is a [[560-series_scopes|560-series scope]] that was [[introduced in 1961]] and produced in various versions well into the 1970s. | ||
produced in various versions well into the 1970s. | |||
==Versions== | ==Versions== | ||
Over its life, the 561 was actually a series of four very different scopes, | Over its life, the 561 was actually a series of four very different scopes, plus the rack mount versions of each. | ||
plus the rack mount versions of each. | |||
===561=== | ===561=== | ||
The original 561 and RM561 were introduced in 1961. | The original 561 and RM561 were introduced in 1961. | ||
Similar to the 560, also [[introduced in 1961]], the 561 has a round CRT. | Similar to the 560, also [[introduced in 1961]], the 561 has a round CRT. | ||
It supports the 50, 60 and 70 series of plug-ins, with the highest system bandwidth of 4 MHz. | It supports the 50, 60 and 70 series of plug-ins, with the highest system bandwidth of 4 MHz. Some later plugins intended for use with the 561A or 561B have higher power requirements and may not be compatible with the 561. | ||
The 561 uses the [[T5032]] CRT, which has a glass envelope. | |||
The 561 uses the [[T5032]] CRT, which has a glass envelope. The 561 and later versions also had a front panel calibrator signal for calibrating the plugins to the mainframe. | |||
The 561 calibrator has 18 attenuation steps and can output a square wave with an amplitude of 200 μV to 100 V. | |||
Early serial numbers of the 561 use a neon bulb (B633) in the -100 V regulator circuit, however, later versions (including the 561A and later) used a transistor. | |||
The modification for early units is documented at the end of the 561 manual and in the 040-288 Field Modification Instructions. | |||
===561A=== | ===561A=== | ||
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The 561A were the highest selling model in the 560 series. | The 561A were the highest selling model in the 560 series. | ||
They introduced a revolutionary new CRT, the [[T5610]], incorporating many “firsts” | They introduced a revolutionary new CRT, the [[T5610]], incorporating many “firsts” that would remain through most of Tek's analog scopes to follow – | ||
that would remain through most of Tek's analog scopes to follow – a rectangular faceplate | a rectangular faceplate allowing for a more compact CRT, and a ceramic CRT envelope which provided more mechanical precision than a blown glass tube. | ||
allowing for a more compact CRT, and a ceramic CRT envelope which provided more mechanical | This also enabled the use of a separate face plate made from a flat glass panel that could have the graticule markings printed on the [[phosphor]] | ||
precision than a blown glass tube. This also enabled the use of a separate face plate made | side of the faceplate, totally eliminating parallax errors, and allowing for better edge illumination. | ||
from a flat glass panel that could have the graticule markings printed on the [[phosphor]] | |||
side of the faceplate, totally eliminating parallax errors, and allowing for better | |||
edge illumination | |||
The 561A was one of the mainframes offered for the [[Engine Analyzer]] package. | The 561A was one of the mainframes offered for the [[Engine Analyzer]] package. | ||
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===561B=== | ===561B=== | ||
The 561B / RM561B were [[introduced in 1969]]. | The 561B / RM561B were [[introduced in 1969]]. | ||
The | The 561B uses the same [[560-series plug-ins]] used by the 561A. | ||
with the change being limited to all solid state design, including the HV rectifiers. | The 561B models actually provided no performance improvements over the 561A, with the change being limited to all solid state design, including the HV rectifiers. | ||
While this improves reliability of the mainframe, | While this change improves reliability of the mainframe, Tektronix never produced fully solid state amplifier or non-sampling timebase plug-ins for the 560 Series. | ||
===561S=== | ===561S=== | ||
A special 561S was introduced as a special product, modified from a 561A. | A special 561S was introduced as a special product, modified from a 561A. It did not appear in any Tek catalog. | ||
It did not appear in any Tek catalog. | With special modified amplifier and time base ([[3A1S]] and [[3B1S]]), and a special CRT ([[T5033]]), it achieved a 25 MHz system bandwidth, which is 2.5 times the bandwidth of a 561A. | ||
With special modified amplifier and time base ([[3A1S]] and [[3B1S]]), | |||
and a special CRT ([[T5033]]), it achieved a 25 MHz system bandwidth, | |||
which is 2.5 times the bandwidth of a 561A. | |||
The 3A1S and 3B1S were the only plug-ins that could be used in the 561S | The 3A1S and 3B1S were the only plug-ins that could be used in the 561S because the T5033 CRT has higher deflection sensitivity than the CRT used in the 561, 561A, and 561B. | ||
because the T5033 CRT has higher deflection sensitivity than the CRT used in | The vertical deflection sensitivity of the T5033 is 11.7 V/cm. The 561A has the [[T561]] CRT which has a vertical deflection sensitivity of 19.5 V/cm. | ||
the 561, 561A, and 561B. The vertical deflection sensitivity of the | |||
T5033 is 11.7 V/cm. The 561A has the [[T561]] CRT which has a vertical | |||
deflection sensitivity of 19.5 V/cm. | |||
The higher bandwidth of the 561S came at the expense of | The higher bandwidth of the 561S came at the expense of trading off some of the advances gained in the original 561A. | ||
trading off some of the advances gained in the original 561A. | |||
The CRT is a conventional glass envelope, without internal graticule. | The CRT is a conventional glass envelope, without internal graticule. | ||
Also, the scale was reduced from 8 × 10 divisions to 6 × 10. | Also, the scale was reduced from 8 × 10 divisions to 6 × 10. The 561S has no post-deflection acceleration, and a CRT cathode voltage of -3,300 V, like the other 561 models. | ||
The 561S has no post-deflection acceleration, and a CRT cathode | |||
voltage of -3,300 V, like the other 561 models. | ===Plugin Compatibility=== | ||
The popular 60 and 70 series plug-ins were later given a “2A, 2B, 3A, or 3B” prefix. | |||
The highest bandwidth plug-ins gave a system bandwidth of 10 MHz when used in the 561A and 561B. | |||
The 561A, RM561A, 561B, and RM561B are compatible with all of the 2 and 3-series plugins that Tektronix made. | |||
The 561 and RM561 have limited compatibility with some 3-series plugins, mainly due to the CRT circuit. | |||
For plugins such as the 3B1 and 3B3 time bases there are issues with the blanking and intensified sweep. | |||
The 561A and subsequent models used a dual-secondary winding transformer in the CRT power supply, with one winding used in an intensifying pulse circuit which the original 561 lacked. | |||
Other 3-series plugins may be used in the original 561 with some modifications – for example, to use a 3A74 4-channel vertical plugin in a 561 sn101to579, the +6 V unregulated supply needs to be disconnected from both plugin connectors (pin 18). | |||
Later 561's with sn580 and higher already had this change implemented. More information regarding the use of 3-series plugins and the required modifications (if available) can be found in the Tektronix 561 Instrument Reference Book (IRB). | |||
{{BeginSpecs}} | {{BeginSpecs}} | ||
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<gallery> | <gallery> | ||
Tek 561 trace.jpg|Tek 561 with camera mount | Tek 561 trace.jpg|Tek 561 with camera mount | ||
561 Front.jpeg | Tek 561 with round CRT and external graticule | 561 Front.jpeg|Tek 561 with round CRT and external graticule | ||
561 Left.jpeg|Left side of the scope | |||
561 Right.jpeg|Right side of the scope | |||
561 Back.jpeg|Back of the scope | |||
561 PSU.jpg|Powersupply | |||
561 LeftClose.jpg|Powersupply tubes | |||
561 PSU LV.jpg|Low voltage powersupply | |||
561 PSU HV.jpg|High voltage powersupply | |||
561 HVCover.jpg|High voltage powersupply cover | |||
561 BayConnector.jpg|Plugin connector | |||
561 Calibrator.jpg|Calibrator circuit | |||
561 FrontControls.jpeg|Calibrator | |||
561 CRTNeck.jpg|Deflection plate connections | |||
561 CRTSocket.jpg|CRT socket | |||
</gallery> | </gallery> | ||
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561b_inside_left.jpg | left inside | 561b_inside_left.jpg | left inside | ||
561b_inside_top.jpg | top inside | 561b_inside_top.jpg | top inside | ||
Tek r561b.jpg|R561B | |||
</gallery> | </gallery> | ||
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Tek rm561a top inside.jpg|RM561A top inside | Tek rm561a top inside.jpg|RM561A top inside | ||
LINC console.jpg | RM561A in LINC computer console | LINC console.jpg | RM561A in LINC computer console | ||
RM561A with 3B3 and 3A74.jpg | RM561A with 3B3 and 3A74 | |||
RM561 with 3A1 and 3B4 from NASA AMES.jpg | RM561 with 3A1 and 3B4 from NASA AMES | |||
</gallery> | </gallery> | ||
{{Parts|561}} | |||
{{Parts|561A}} | |||
{{Parts|561B}} | |||
{{Parts|561S}} | |||
[[Category:560 series scopes]] | [[Category:560 series scopes]] |