3A8: Difference between revisions

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3A8 (view source)

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-{{Plugin Sidebar 2|
+{{Plugin Sidebar
-title=Tektronix 3A8 |
+|manufacturer=Tektronix
-summary=Operational amplifier|
+|series=560-series scopes
-image=3a8-crop.jpg |
+|type=3A8
-caption=3A8 front view |
+|summary=Operational amplifier plug-in
-introduced=1965 |
+|image=Tek 3a8 front.jpeg
-discontinued=1972 |
+|caption=3A8 Front View
-series=[[560-series scopes]]|
+|introduced=1965
-manuals=
+|discontinued=1972
-* [http://w140.com/tek_3a8.pdf Tektronix 3A8 Manual (PDF)]
+|designers=Roy Hayes
-* [[Media:Tek type 3a8 irb.pdf|Tektronix 3A8 Instrument Reference Book (PDF, OCR)]]
+|manuals=
+* [[Media:070-0507-00.pdf|Tektronix 3A8 Manual]]
+* [[Media:Tek type 3a8 irb.pdf|Tektronix 3A8 Instrument Reference Book]] (OCR)
 }}
-The '''Tektronix 3A8''' is an operational amplifier plug-in for [[560-series scopes]].
+The '''Tektronix 3A8''' is an operational amplifier plug-in for [[560-series scopes]],  designed by [[Roy Hayes]] and [[introduced in 1965]].
-It was designed by [[Roy Hayes]].
+The 3A8 contains two operational amplifiers and a vertical display amplifier.
+Each operational amplifier has external inputs and outputs.
+Input and feedback resistances / capacitances are separately switch-selectable to provide a variety of operational amplifier functions.
+External components can be substituted by way of front panel banana jacks, which also accept special purpose modules (see ''Accessories'', below.)
+The display amplifier can be connected to the output of either operational amplifier, or an external input. The input can be AC or DC coupled and can be inverted.
 {{BeginSpecs}}
+{{Spec | Gain Bandwidth Product | ≥10 MHz }}
+{{Spec | DC Open Loop Gain | ≥10,000  }}
+{{Spec | Output | ≥±25 V driving ≥7.5 mA (including feedback current) }}
 {{Spec | Display Amplifier Bandwidth | DC to 3.5 MHz }}
-{{Spec | Display Amplifier Sensitivity | 20 mV/cm to 10 V/cm }}
+{{Spec | Display Amplifier Sensitivity | 20 mV/cm to 10 V/cm, 1−2−5 }}
-{{Spec | Opamp Gain Bandwidth Product | ≥10 MHz }}
-{{Spec | Opamp DC Open Loop Gain | ≥ 10,000  }}
-{{Spec | Opamp Output |  ≥ ± 25 V driving ≥ 7.5 mA (including feedback current) }}
-{{Spec | Opamp Features | Input and feedback resistances and capacitances are separately switch selectable to provide a variety of opamp functions.
-External components can be substituted by way of front panel banana sockets which also accept special purpose adapters (see ''Accessories'').
-}}
 {{EndSpecs}}
 ==Internals ==
-The 3A8 contains one vertical display amplifier and two operational amplifiers.
+The 3A8 has several transistors plus three 9-pin vacuum tubes, an [[8416]] and two [[6KV8]]s.
-The 3A8 display amplifier can accept inputs from the output of either operational amplifier or from an external input. The input can be AC or DC coupled and can be inverted if desired. It has several transistors plus three 9-pin miniature vacuum tubes: an [[8416]] and two [[6KV8]]s.
+Each operational amplifier has a number of transistors plus three [[Nuvistor]]s: a [[6CW4]] and a selected pair of [[7586]]s.
-Each 3A8 operational amplifier can accept external inputs and has external as well as internal outputs. Each operational amplifier has a number of transistors plus three [[Nuvistor]]s: a [[6CW4]] and a selected pair of [[7586]]s.
 ==Accessories==
+:[[013-0048-01]] Terminal Adapter Assembly (empty box for user chosen components)
 :[[013-0049-01]] Standard Shielded Cover (two supplied with each plugin)
-:[[013-0048-01]] Terminal Adapter Assembly (empty box for user chosen components)
+:[[013-0067-00]] Logarithmic Amplifier Adapter
+:[[013-0068-00]] Gating Adapter
 :[[013-0081-00]] Compensating Adapter
-:[[013-0068-00]] Gating Adapter
 :[[013-0086-00]] Leakage Current Adapter
-:[[013-0067-00]] Logarithmic Amplifier Adapter
 ==Calibration Fixtures==
@@ Line 45: / Line 47: @@
 ==Pictures==
 <gallery>
-Tek 3a8 1.JPG
+Tek 3a8 front.jpeg
-Tek 3a8 2.JPG
+Tek 3a8 front2.jpeg
-Tek 3a8 3.JPG
+Tek 3A8 j5.jpeg | Front, no plugin covers
-Tek 3a8 4.JPG
+Tek 3A8 j6.jpeg | Front view, w/shield covers
-Tek 3a8.jpg
+Tek 3A8 j1.jpeg | 3A8 Left side
+Tek 3A8 j2.jpeg | 3A8 Right side
 </gallery>
+==Components==
+{{Parts|3A8}}
 [[Category:560 series plugins]]