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561: Difference between revisions
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'''561A''' | '''561A''' | ||
* [[Media:070-342.pdf|Tektronix 561A Manual]] | * [[Media:070-342.pdf|Tektronix 561A Manual]] | ||
* [https://bama.edebris.com/download/tek/561a/561a.djvu | <small>* '''Alternate:''' [https://bama.edebris.com/download/tek/561a/561a.djvu DjVu @ BAMA] | ||
'''561B, RM561A/B''' | '''561B, RM561A/B''' | ||
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* [[Media:070-0802-00.pdf|Tektronix 561B Manual]] | * [[Media:070-0802-00.pdf|Tektronix 561B Manual]] | ||
* [[Media:TM 9-6625-963-14-1.pdf|Military Tektronix RM561A & RM561B Manual]] | * [[Media:TM 9-6625-963-14-1.pdf|Military Tektronix RM561A & RM561B Manual]] | ||
* | <small>* '''Alternate:''' RM561A & RM561B [https://bama.edebris.com/download/tek/561b/561b.djvu DjVu @ BAMA] / [https://bama.edebris.com/download/tek/561/561scope.pdf PDF @ BAMA]</small> | ||
'''561S''' | '''561S''' | ||
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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. | 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. | The modification for early units is documented at the end of the 561 manual and in the 040-288 Field Modification Instructions. | ||
{{Documents|Link=561}} | |||
===561A=== | ===561A=== | ||
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The Mod210C replaced the T5610 ceramic CRT with the T5032 glass CRT and an external graticule. The graticule illumination was changed to red and the BNC connectors of the scope and plugins were replaced with UHF connectors. The graticule has an engraved sinewave. A green light filter was added between the CRT and the graticule. | The Mod210C replaced the T5610 ceramic CRT with the T5032 glass CRT and an external graticule. The graticule illumination was changed to red and the BNC connectors of the scope and plugins were replaced with UHF connectors. The graticule has an engraved sinewave. A green light filter was added between the CRT and the graticule. | ||
{{Documents|Link=561A}} | |||
===561B=== | ===561B=== | ||
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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. | 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 change improves reliability of the mainframe, Tektronix never produced fully solid state amplifier or non-sampling timebase plug-ins for the 560 Series. | 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. | ||
{{Documents|Link=561B}} | |||
===561S=== | ===561S=== | ||
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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. The 561S has no post-deflection acceleration, and a CRT cathode voltage of -3,300 V, like the other 561 models. | 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. | ||
{{Documents|Link=561S}} | |||
===Plugin Compatibility=== | ===Plugin Compatibility=== | ||