2A61: Difference between revisions

2A61 (view source)

Revision as of 08:34, 28 November 2023

146 bytes removed , 28 November 2023

minor edits, plus created Key Specs section

Jadney

1,341

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-{{Plugin Sidebar |
+{{Plugin Sidebar
-manufacturer=Tektronix |series=560-series scopes |type= 2A61 |
+| manufacturer=Tektronix
-summary = Differential amplifier |
+| series=560-series scopes
-image=Tek 2a61 front.jpg|
+| type= 2A61
-caption=Tek 2A61 Front |
+| summary = Differential amplifier
-designers=Larry Mayhew  |
+| image=Tek 2a61 front.jpg
-introduced=1963 |
+| caption=Tektronix 2A61 Front
-discontinued=(?) |
+| designers=Larry Mayhew
-manuals=
+| introduced=1963
+| discontinued=(?)
+| manuals=
 * [[Media:070-0328-01.pdf|Tektronix 2A61 Manual]] (PDF)
 * [http://bama.edebris.com/download/tek/2a61/2a61.djvu Tektronix 2A61 Manual @ BAMA] (DjVu)
 * [[Media:2a61 1000-1 cal input adapter.pdf|Tektronix 2A61 1000:1 Cal Div/Input Adapter (PDF, needs OCR)]]
 }}
-The '''Tektronix 2A61''' is a differential amplifier plug-in for [[560-series scopes]], [[introduced in 1963]].
+The '''Tektronix 2A61''' is a differential amplifier plug-in for the [[560-series scopes | 560 series oscilloscopes]], [[introduced in 1963]].
-==Specifications==
+{{BeginSpecs}}
-The deflection factor ranges from 10 μV/div to 20 mV/div.
+{{Spec | Input impedance | 1 MΩ // 100 pF }}
+{{Spec | Deflection | 10 μV/div to 20 mV/div in 1−2−5 sequence }}
-There are switch-selectable high-frequency and low-frequency cutoffs.
+{{Spec | Bandwidth | Switch selectable:<br>Low Limit: ~0.06 to ~600 Hz<br>High Limit: ~60 Hz to ~0.3 MHz }}
+{{Spec | CMRR | 50,000:1 at Frequencies below 10 kHz }}
-At 20 mV/div, the minimum low-frequency cutoff is 0.06 Hz and the maximum high-frequency cutoff is 300 kHz.
+{{Spec | Common Mode Range | -5 ≤ A-B ≤ 5 V }}
+{{Spec | Line Filter | Switchable: at Least 50:1 attenuation }}
-The common mode rejection ratio is 50,000:1 at frequencies below 10 kHz.
+{{EndSpecs}}
-The input impedance at each input is 10 MΩ in parallel with 100 pF.  The common mode range is +/- 5 V.
-The 2A61 has a line frequency filter that can be switched in our out of the signal path.
-It is specified to attenuate line-frequency signal components by at least 50:1.
 ==Internals==
 The front end consists of a differential amplifier.
 Up to serial number 986, the front-end differential amplifier used a pair of [[5842]] tubes biased with a tail current of 10 mA and a plate-to-cathode voltage of about 100 V.