7B71: Difference between revisions
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|designers=Murlan Kaufman | |designers=Murlan Kaufman | ||
|manuals= | |manuals= | ||
* [[Media:070-0983-00.pdf|Tektronix 7B71 Manual]] | * [[Media:070-0983-00.pdf|Tektronix 7B71 Manual]] | ||
* [[Media:070-1580-00.pdf|Tektronix 7B71 Manual]] (complete, B205000 and up) | * [[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]]. | 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. | ||
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{{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== | ||
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* [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] | * [https://www.youtube.com/watch?v=dbPwQhZ0yt0 Zenwizard Studios - Tektronix 7B71 Repair and Partial Alignment] | ||
{{Documents|Link=7B71}} | |||
{{PatentLinks|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> | ||
7B71 MOD515C Plugin | |||
The 7B71 Mod 515C adds the ability to remotely operate the triggering level, the position & delay time, the magnifier setting and the trigger-modes. The modified 7B71 timebase can be configured as a delaying or as a delayed timebase. See [[WP1000AF]] for further details | |||
<gallery> | |||
Tek_7B71_mod515c_front.jpg|Front view of a 7B71 plugin with MOD515C | |||
Tek_7B71_mod515c_left.jpg|Left side | |||
Tek_7B71_mod515c_right.jpg|Right side | |||
Tek_7B71_mod515c_top.jpg|Top side | |||
Tek_7B71_mod515c_serial.jpg|Closeup of serial number and MOD515C sticker | |||
</gallery> | |||
==Components== | |||
{{Parts|7B71}} | |||
[[Category:7000 series horizontal plugins]] | [[Category:7000 series horizontal plugins]] | ||
Latest revision as of 22:02, 4 July 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
Patents that may apply to 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
7B71 MOD515C Plugin
The 7B71 Mod 515C adds the ability to remotely operate the triggering level, the position & delay time, the magnifier setting and the trigger-modes. The modified 7B71 timebase can be configured as a delaying or as a delayed timebase. See WP1000AF for further details
-
Front view of a 7B71 plugin with MOD515C
-
Left side
-
Right side
-
Top side
-
Closeup of serial number and MOD515C sticker
