3B4: Difference between revisions

3B4 (view source)

Revision as of 11:58, 23 September 2014

274 bytes added , 23 September 2014

template, cat

Peter

Bureaucrats, Interface administrators, Suppressors, Administrators

40,987

edits

@@ Line 1: / Line 1: @@
-The Tektronix Type 3B4 is a timebase plug-in for [[560-series scopes]].  It was introduced in 1964.
+{{Plugin Sidebar 2 |
-It was intended primarily for use
+title=Tektronix 3B4 |
-with the 561A, but works fine in other 560-series scopes.  The 3B4 is unusual in having an explicit
+summary=Time base plugin |
-"FREE RUN" mode.
+series=[[560-series scopes]] |
-In the triggered modes, the [[tunnel diodes|tunnel diode]]-based triggering is rated to work to 20MHz.
+image=3b4_front.jpg|
-The vertical bandwidth of typical 560-series (non-sampling) scopes is about 10MHz, so 20MHz is adequate.
+caption=3B4 front view |
-Triggering is done with a [[TD3A]] 4.7mA tunnel diode.  The trigger input is amplified and buffered by a
+introduced=1964 |
-[[6DJ8]]-based differential amplifier driving a common-emitter [[2N964]] germanium PNP transistor whose
+discontinued=(?) |
-collector current switches the tunnel diode.
+manuals=
+* [http://bama.edebris.com/download/tek/3b4/3b4.djvu Tektronix 3B4 Manual (DjVu)]
+* [http://w140.com/3b4.pdf Tektronix 3B4 Manual (PDF)]
+}}
+The '''Tektronix Type 3B4''' is a timebase plug-in for [[560-series scopes]].  It was 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 diodes|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.
-* [http://bama.edebris.com/download/tek/3b4/3b4.djvu Tektronix 3B4 Manual (DjVu)]
+{{MissingSpecs}}
-* [http://w140.com/3b4.pdf Tektronix 3B4 Manual (PDF)]
+==Pictures==
 <gallery>
-Image:3b4_front.jpg|front view
+File:3b4_front.jpg|front view
-Image:3b4_left.jpg|left side view
+File:3b4_left.jpg|left side view
-Image:3b4_right.jpg|right side view
+File:3b4_right.jpg|right side view
-Image:3b4_top.jpg|top view
+File:3b4_top.jpg|top view
 </gallery>
+[{Category:560 series plugins]]