3B3: Difference between revisions

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{{Plugin Sidebar 2 |
{{Plugin Sidebar
title=Tektronix 3B3|
|manufacturer=Tektronix
summary=Time Base|
|series=560-series scopes
image=3b3 front.jpg|  
|type=3B3
caption=3B3 front view|
|summary=Time Base plug-in
introduced=1962 |
|image=Tek 3b3 front.jpeg
discontinued=(?) |
|caption=Tektronix 3B3
series=[[560-series scopes]]|
|introduced=1962  
manuals=
|discontinued=(?)
* [http://bama.edebris.com/download/tek/3b3/3b3.djvu Tektronix 3B3 Manual (DjVu)]
|manuals=
* [http://w140.com/3b3.pdf Tektronix 3B3 Manual (PDF)]
* [[Media:070-365.pdf                        | Tektronix 3B3 Manual]]
* [[Media:Tek type 3b3 fcp no ocr.pdf|Tektronix Type 3B3 Factory Calibration Procedure (PDF, needs OCR)]]
* [[Media:Tek type 3b3 fcp.pdf              | Tektronix Type 3B3 Factory Calibration Procedure]]
* [[Media:Tek 3b3 fcp tentative oct 1962.pdf | Tektronix 3B3 Factory Calibration Procedure, October 1962‎]]
* [[Media:Tek 3b3 fcp may 1966.pdf‎          | Tektronix 3B3 Factory Calibration Procedure, May 1966‎]]
* [[Media:050-0582-00-TEK_3B1-3B3-MOD.pdf    | 050-0582-00 Q114/Q214 Germanium Transistor Replacement]]
}}
}}
The '''Tektronix Type 3B3''' is sweep unit (time base) [[introduced in 1963]], intended
The '''Tektronix 3B3''' is a time base [[introduced in 1963]] for [[560-series scopes]].
for use with the [[561|561A]]. It works fine in other [[560-series scopes]].
It works fine in all [[560-series scopes]] other than the [[560]] itself, as well as in the [[129]].


It provides a calibrated delay from 500 ns to 10 s after the trigger event, before
It provides a calibrated delay from 500 ns to 10 s after the trigger event, before sweeping.   
sweeping.  Delayed sweep allows the operator to "zoom in" on regions of interest in a waveform.
Delayed sweep allows the operator to "zoom in" on regions of interest in a waveform.


The 3B3 provides an intensified mode that indicates the selected region of interest in the  
The 3B3 provides an intensified mode that indicates the selected region of interest in the delayed sweep by showing the entire waveform with the trace brighter in the selected region.
delayed sweep by showing the entire waveform with the trace brighter in the selected region.


==Specifications==
{{MissingSpecs}}
[[Category:Specifications needed]] ''please add''
 
==Links==
{{Documents|Link=3B3}}


==Internals==
==Internals==


Triggering is done using a 2 mA germanium [[tunnel diodes|tunnel diode]]. The trigger source  
Triggering is done using a [[1N3714]] 2 mA germanium [[tunnel diode]].
is buffered by a [[7895]] Nuvistor triode cathode-follower driving a differential amplifier  
The trigger source is buffered by a [[7895]] Nuvistor triode cathode-follower  
formed by two [[2N2207]] germanium PNP transistors.  The collector current switches the  
driving a differential amplifier formed by two [[2N2207]] germanium PNP transistors.   
tunnel diode when a triggering event occurs.   
The collector current switches the tunnel diode when a triggering event occurs.   


Up to serial number 1029, the 3B3 uses Transitron T12G germanium diodes (equivalent to  
Up to serial number 1029, the 3B3 uses Transitron T12G germanium diodes (equivalent to  
Line 40: Line 44:
3b3 right.jpg
3b3 right.jpg
3b3 left.jpg
3b3 left.jpg
Tek 3b3 block.png|Block Diagram
Tek 3b3 block.png                       | Block Diagram
Tek 3b3 delay pickoff.png|Delay Pickoff
Tek 3b3 delay pickoff.png               | Delay Pickoff
Tek 3b3 early delayed sweep trigger.png|Delayed Sweep Trigger
Tek 3b3 early delayed sweep trigger.png | Delayed Sweep Trigger
Tek 3b3 early delayed sweep.png|Delayed Sweep
Tek 3b3 early delayed sweep.png         | Delayed Sweep
Tek 3b3 delayed sweep timing switch.png|Delayed Sweep Timing Switch
Tek 3b3 delayed sweep timing switch.png | Delayed Sweep Timing Switch
Tek 3b3 mode switch.png|Mode Switch
Tek 3b3 mode switch.png                 | Mode Switch
Tek 3b3 delay pickoff.png|Delay Pickoff
Tek 3b3 delay pickoff.png               | Delay Pickoff
Tek 3b3 early normal trigger.png|Normal Trigger
Tek 3b3 early normal trigger.png       | Normal Trigger
Tek 3b3 normal sweep timing switch.png|Normal Sweep Timing Switch
Tek 3b3 normal sweep timing switch.png | Normal Sweep Timing Switch
Tek 3b3 horizontal amp.png|Horizontal Amp
Tek 3b3 horizontal amp.png             | Horizontal Amp
Tek 3b3 11891.jpg
Tek 3b3 11891.jpg
Tek 3b3 11891_2.jpg
Tek 3b3 11891_2.jpg
Tek 3b3 11891_3.jpg
Tek 3b3 11891_3.jpg
</gallery>
</gallery>
==Components==
{{Parts|3B3}}


[[Category:560 series plugins]]
[[Category:560 series plugins]]

Latest revision as of 06:18, 20 March 2024

Tektronix 3B3
Time Base plug-in
Tektronix 3B3

Compatible with 560-series scopes

Produced from 1962 to (?)

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix 3B3 is a time base introduced in 1963 for 560-series scopes. It works fine in all 560-series scopes other than the 560 itself, as well as in the 129.

It provides a calibrated delay from 500 ns to 10 s after the trigger event, before sweeping. Delayed sweep allows the operator to "zoom in" on regions of interest in a waveform.

The 3B3 provides an intensified mode that indicates the selected region of interest in the delayed sweep by showing the entire waveform with the trace brighter in the selected region.

Key Specifications

  • please add

Links

Documents Referencing 3B3

(no results)

Internals

Triggering is done using a 1N3714 2 mA germanium tunnel diode. The trigger source is buffered by a 7895 Nuvistor triode cathode-follower driving a differential amplifier formed by two 2N2207 germanium PNP transistors. The collector current switches the tunnel diode when a triggering event occurs.

Up to serial number 1029, the 3B3 uses Transitron T12G germanium diodes (equivalent to the 1N270) to protect the transistors of the front-end differential amplifier. Starting at serial number 1030, silicon diodes were used for that function.

Pictures

  • Block Diagram

    Block Diagram

  • Delay Pickoff

    Delay Pickoff

  • Delayed Sweep Trigger

    Delayed Sweep Trigger

  • Delayed Sweep

    Delayed Sweep

  • Delayed Sweep Timing Switch

    Delayed Sweep Timing Switch

  • Mode Switch

    Mode Switch

  • Delay Pickoff

    Delay Pickoff

  • Normal Trigger

    Normal Trigger

  • Normal Sweep Timing Switch

    Normal Sweep Timing Switch

  • Horizontal Amp

    Horizontal Amp

Components

Some Parts Used in the 3B3

Part Part Number(s) Class Description Used in
1N270 152-008 • 152-0008-00 Discrete component 100 V, 40 mA, 0.8 pF Germanium diode 3B3
1N3714 152-0081-00 Discrete component 2.2 mA, 25 pF germanium tunnel diode 546 • 547 • 556 • 21A • 22A • 3B1 • 3B2 • 3B3 • 422 • 491 • 283
1N3716 152-093 • 152-0093-00 Discrete component 4.7 mA / 50 pF tunnel diode 3B3 • R116
2N2207 151-063 • 151-0063-00 Discrete component germanium PNP transistor 3B1 • 3B3 • 3S76 • 321A • 547
6AL5 154-016 • 154-0016-00 • 154-0038-00 Vacuum Tube (Dual Diode) high-perveance dual diode 163 • 181 • 190 • 1M1 • 310 • 310A • 315 • 316 • 317 • 3B1 • 3B1S • 3B2 • 3B3 • 3B5 • 502 • 502A • 503 • 511 • 511A • 512 • 516 • 517 • 517A • 524 • 526 • 535 • 535A • 545 • 545A • 549 • 551 • 565 • 570 • 581 • 581A • 585 • 585A • C • T • Telequipment D52 • Telequipment D56 • Telequipment S52
6BL8 154-0278-00 Vacuum Tube (Triode/Pentode) triode-pentode combo 67 • 2B67 • 3B1 • 3B1S • 3B2 • 3B3 • 3B4 • 503 • 504 • 506 • 516 • 549 • 561 • 561A • 561S • 564 • 565 • 567 • Telequipment D52 • Telequipment D56 • Telequipment S31 • Telequipment S32 • Telequipment S32A • Telequipment S51 • Telequipment S52
6DJ8 154-0187-00 • 154-0305-00 Vacuum Tube (Dual Triode) dual triode 067-506 • 111 • 132 • 161 • 310A • 316 • 317 • 502 • 502A • 503 • 504 • 506 • 515 • 516 • 519 • 526 • 529 • RM529 • 533 • 535 • 536 • 543 • 544 • 545 • 545A • 545B • 546 • 547 • 549 • 555 • 556 • 561A • 561S • 564 • 565 • 567 • 581 • 581A • 585 • 585A • 661 • 1A4 • 1S1 • 60 • 2A60 • 63 • 2A63 • 67 • 2B67 • 3A1 • 3A1S • 3A2 • 3A3 • 3A6 • 3A7 • 72 • 3A72 • 75 • 3A75 • 4S2 • 51 • 3B1 • 3B1S • 3B2 • 3B3 • 3B4 • 3M1 • 3S76 • 3T77 • 3T77A • 9A1 • 9A2 • 1121 • 80 • 81 • 82 • 86 • B • O • W • Z • Telequipment D56 • Telequipment S32A • Telequipment D52 • S-311 • Telequipment TD51 • Telequipment S52 • Telequipment S51 • Telequipment Type A • TU-4
7895 154-0378-00 Vacuum Tube (Triode) Nuvistor Triode 3B1 • 3B1S • 3B3
RT5204 151-0058-00 Discrete component Silicon NPN transistor 565 • RM565 • Z • 2A61 • 3B1 • 3B3 • 3S76 • 3T77
TD714 152-0402-00 Discrete component 2.2 mA, 25 pF tunnel diode 1401 • 1401A • 283 • R283 • 3B2 • 3B3 • 422 • 491 • 546 • RM546 • 547 • RM547 • 556 • RM556 • SPG11 • SPG12
ZZ1000 154-370 • 154-0370-00 Gas Discharge Tube (Voltage regulator) 81 V voltage reference 129 • 3B1 • 3B1S • 3B2 • 3B3 • 3S76 • 422 • S-311
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