3B4: Difference between revisions

Revision as of 15:13, 10 October 2021

Tektronix 3B4
Time base plugin 3B4 front view Compatible with 560-series scopes Produced from 1964 to (?) Manuals Tektronix 3B4 Manual (PDF) Tektronix 3B4 Manual @ BAMA (DjVu) Tektronix 3B4 Factory Calibration Procedure, January 1969 Tektronix 3B4 Factory Calibration Procedure, June 1967 (All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

The Tektronix Type 3B4 is a timebase plug-in for 560-series scopes, introduced in 1964.

It was intended primarily for use with the 561A, but works fine in other 560-series scopes. The 3B4 is unusual in having an explicit "FREE RUN" mode.

In the triggered modes, the tunnel diode-based triggering is rated to work to 20 MHz. The vertical bandwidth of typical 560-series (non-sampling) scopes is about 10 MHz, so 20 MHz is adequate.

Triggering is done with a TD3A 4.7 mA tunnel diode. The trigger input is amplified and buffered by a 6DJ8-based differential amplifier driving a common-emitter 2N964 germanium PNP transistor whose collector current switches the tunnel diode.

The 283 Real Time adapter enables real-time sweeps with a 3B4.

Key Specifications

please add

Links

Tek 3B4 @ barrytech.com

Pictures

front view
left side view
right side view
top view

Some Parts Used in the 3B4

Part	Part Number(s)	Class	Description	Used in
1N3717	152-0381-00 • 152-0125-00	Discrete component	4.7 mA, 25 pF tunnel diode	1L40 • 1S1 • 1S2 • 11B1 • 11B2 • 11B2A • 147A • 1470 • 148 • 21A • 22A • 3B4 • 3B5 • 408 • 432 • 434 • 453 • 453A • 454 • 466 • 491 • 5T3 • 544 • RM544 • 546 • RM546 • 547 • RM547 • 556 • RM556 • 7B70 • 7B71 • 7D11
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
7119	154-0340-00	Vacuum Tube (Dual Triode)	dual triode	067-506 • 067-0532-00 • 191 • 3A3 • 3B4 • 3B5 • 516 • 545B • 549 • 661 • Chemtrix 205
STD704	152-0125-00	Discrete component	4.7 mA tunnel diode	1L40 • 1S1 • 11B1 • 11B2 • 11B2A • 147 • R147 • 147A • R147A • 1470 • 148 • R148 • 148-M • 149 • R149 • 149A • R149A • 21A • 22A • 3B4 • 3B5 • 408 • 432 • 434 • 453 • 453A • 454 • 464 • 465 • 466 • 491 • 5T3 • 544 • RM544 • 546 • RM546 • 547 • RM547 • 556 • RM556 • 7B70 • 7B71 • 7D11

@@ Line 40: / Line 40: @@
 b4_top.jpg|top view
 </gallery>
+{{Parts|3B4}}
 [[Category:560 series plugins]]