7B71: Difference between revisions
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{{Plugin Sidebar | {{Plugin Sidebar | ||
|manufacturer=Tektronix | |||
summary=200 MHz Delaying Timebase| | |series=7000-series scopes | ||
image= 7b71-front.jpg | | |type=7B71 | ||
caption=Tektronix 7B71 Timebase plug-in| | |summary=200 MHz Delaying Timebase | ||
introduced= | |image= 7b71-front.jpg | ||
discontinued=1975 | |caption=Tektronix 7B71 Timebase plug-in | ||
|introduced=1969 | |||
manuals= | |discontinued=1975 | ||
* [ | |designers=Murlan Kaufman | ||
* [ | |manuals= | ||
* [ | * [[Media:070-0983-00.pdf|Tektronix 7B71 Manual]] | ||
* [ | * [[Media:070-1580-00.pdf|Tektronix 7B71 Manual]] (complete, B205000 and up) | ||
* [[Media:Tek 7b71 cat desc.pdf | Tektronix 7B71 Catalog Description]] | |||
* [[Media:Tek 7b71 mod 515c.pdf | Tektronix Mod 515C supplement]] | |||
}} | }} | ||
The '''Tektronix 7B71 Delaying Time Base''' is a 200 MHz time base plug-in for [[7000-series scopes]]. | |||
It was designed by [[Murlan Kaufman]]. | |||
The 7B71 contains a delay function to control a "B" horizontal plug-in in four-slot mainframes, typically a model [[7B70]]. It has no provision for X-Y mode. | |||
The 7B71 contains a delay function to control a "B" horizontal plug-in in four-slot mainframes, | |||
typically a model [[7B70]]. It has no provision for X-Y mode. | |||
The 7B70/7B71 were primarily intended for the [[7704]] mainframe. | The 7B70/7B71 were primarily intended for the [[7704]] mainframe. | ||
They were superseded by the [[7B85]]/[[7B80]] pair (400 MHz) in 1976, | They were superseded by the [[7B85]]/[[7B80]] pair (400 MHz) in 1976, which increased the frequency range to 400 MHz and added digital read-out of the delay time. | ||
which increased the frequency range to | |||
{{BeginSpecs}} | {{BeginSpecs}} | ||
{{Spec | Sweep | {{Spec | Sweep | 5 s/Div to 20 ns/Div in 1−2−5 sequence, ×10 magnifier down to 2 ns/Div, variable down to 12.5 s/Div}} | ||
{{Spec | | {{Spec | Excluded portions of sweep | None in 7700-series, first 50 ns with magnifier }} | ||
{{Spec | Trigger sensitivity | 0.3 Div (int) or 75 mV (ext) up to 20 MHz, 1.5 Div or 375 mV from 20 MHz to 200 MHz }} | |||
}} | {{Spec | Trigger coupling | DC, AC (>30 Hz), AC HF REJ (30 Hz to 50 kHz), AC LF REJ (>30 kHz) }} | ||
{{Spec | Trigger input | 1 MΩ // 20 pF, max. 500 V DC+peak AC }} | |||
{{Spec | Jitter | less than 1 ns at 150 MHz }} | |||
{{Spec | Trigger Modes | Peak-Peak Auto, Auto, Norm, Single Sweep}} | |||
{{Spec | Variable time delay accuracy | 1% (0.5 s/Div to 1 μs/Div)}} | |||
{{Spec | Variable time delay multiplier Linearity | within 0.2%}} | |||
{{EndSpecs}} | {{EndSpecs}} | ||
==Links== | ==Links== | ||
* [[Media: | * [[Media:Tekscope 1974 V6 N4.pdf|Troubleshooting the 7B70 and 7B71 timebases. Tekscope Vol.6 No.4 Sept/Oct 1974]] | ||
* [http://www.barrytech.com/tektronix/tek7000/tek7b71.html Tek 7B71 @ barrytech.com] | * [http://www.barrytech.com/tektronix/tek7000/tek7b71.html Tek 7B71 @ barrytech.com] | ||
* [http://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_timebase/timebase_7B71.htm Tek 7B71 @ amplifier.cd] | * [http://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_timebase/timebase_7B71.htm Tek 7B71 @ amplifier.cd] | ||
* [https://www.youtube.com/watch?v=dbPwQhZ0yt0 Zenwizard Studios - Tektronix 7B71 Repair and Partial Alignment] | |||
{{Documents|Link=7B71}} | |||
==Internals== | |||
The 7B71 contains five 148-0034-00 [[miniature relays]] and one 148-0035-00. It also contains one [[152-0154-00]] and two [[152-0125-00]] [[tunnel diodes]]. | |||
==Pictures== | ==Pictures== | ||
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</gallery> | </gallery> | ||
==Components== | |||
{{Parts|7B71}} | |||
[[Category:7000 series horizontal plugins]] | [[Category:7000 series horizontal plugins]] | ||
Latest revision as of 05:27, 15 January 2024
The Tektronix 7B71 Delaying Time Base is a 200 MHz time base plug-in for 7000-series scopes. It was designed by Murlan Kaufman.
The 7B71 contains a delay function to control a "B" horizontal plug-in in four-slot mainframes, typically a model 7B70. It has no provision for X-Y mode.
The 7B70/7B71 were primarily intended for the 7704 mainframe. They were superseded by the 7B85/7B80 pair (400 MHz) in 1976, which increased the frequency range to 400 MHz and added digital read-out of the delay time.
Key Specifications
Sweep | 5 s/Div to 20 ns/Div in 1−2−5 sequence, ×10 magnifier down to 2 ns/Div, variable down to 12.5 s/Div |
---|---|
Excluded portions of sweep | None in 7700-series, first 50 ns with magnifier |
Trigger sensitivity | 0.3 Div (int) or 75 mV (ext) up to 20 MHz, 1.5 Div or 375 mV from 20 MHz to 200 MHz |
Trigger coupling | DC, AC (>30 Hz), AC HF REJ (30 Hz to 50 kHz), AC LF REJ (>30 kHz) |
Trigger input | 1 MΩ // 20 pF, max. 500 V DC+peak AC |
Jitter | less than 1 ns at 150 MHz |
Trigger Modes | Peak-Peak Auto, Auto, Norm, Single Sweep |
Variable time delay accuracy | 1% (0.5 s/Div to 1 μs/Div) |
Variable time delay multiplier Linearity | within 0.2% |
Links
- Troubleshooting the 7B70 and 7B71 timebases. Tekscope Vol.6 No.4 Sept/Oct 1974
- Tek 7B71 @ barrytech.com
- Tek 7B71 @ amplifier.cd
- Zenwizard Studios - Tektronix 7B71 Repair and Partial Alignment
Documents Referencing 7B71
Document | Class | Title | Authors | Year | Links |
---|---|---|---|---|---|
Tekscope 1969 V1 N5 Oct 1969.pdf | Article | Introducing the New Generation | 1969 | 7000-series scopes • 7504 • 7704 • 7A11 • 7A12 • 7A13 • 7A14 • 7A16 • 7A22 • 7S11 • 7M11 • 7B50 • 7B51 • 7B70 • 7B71 • 7T11 • R5030 • 7000 series readout system • Miniature relays • Cam switches • Industrial Design • T7500 • T7700 • P6052 • P6053 • C-50 • C-51 • 204-2 | |
Tekscope 1969 V1 N6 Dec 1969.pdf | Article | A New Logic for Oscilloscope Displays | 1969 | 7000-series scopes • 7A11 • 7A12 • 7A13 • 7A14 • 7A16 • 7A22 • 7B50 • 7B51 • 7B70 • 7B71 • 7S11 • 7T11 • 7504 • 7704 | |
Tekscope 1974 V6 N4.pdf | Article | Troubleshooting the 7B70 and 7B71 Time Bases | Jim Lawe | 1974 | 7B70 • 7B71 |
Internals
The 7B71 contains five 148-0034-00 miniature relays and one 148-0035-00. It also contains one 152-0154-00 and two 152-0125-00 tunnel diodes.