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title=Tektronix Type A | | title=Tektronix Type A | | ||
summary=20 MHz amplifier plug-in | | summary=20 MHz amplifier plug-in | | ||
image= | image=Tek_type_a_1.jpg | | ||
caption=Tektronix Type 53A | | caption=Tektronix Type 53A | | ||
series=[[500-series scopes]] | | series=[[500-series scopes]] | | ||
introduced= | introduced=1954 | | ||
discontinued=1962 | | discontinued=1962 | | ||
manuals= | manuals= | ||
* [http://bama.edebris.com/manuals/tek/a/ Tektronix Type A Manual (PDF)] | * [http://bama.edebris.com/manuals/tek/a/ Tektronix Type A Manual (PDF)] | ||
* [http://w140.com/tek_fcp/tek_type_a_factory_cal_proc.pdf Tektronix Type A Factory Calibration Procedure (PDF)] | <!-- * [http://w140.com/tek_fcp/tek_type_a_factory_cal_proc.pdf Tektronix Type A Factory Calibration Procedure (PDF)] --> | ||
* [[Media:tek_manuals_type_a.pdf|Tektronix Type A Manual (PDF, OCR, bad-OCR)]] | |||
* [[Media:tek_type_a_fcp.pdf|Tektronix Type A Factory Calibration Procedure (PDF, OCR)]] | |||
}} | }} | ||
The '''Tektronix Type A''' is a single-channel preamp [[introduced in 1959]] for [[500-series scopes]]. | The '''Tektronix Type A''' is a single-channel preamp [[introduced in 1959]] for [[500-series scopes]]. | ||
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Tek 53-54a left.jpg|53/54A left | Tek 53-54a left.jpg|53/54A left | ||
Tek 53-54a rear.jpg|53/54A rear | Tek 53-54a rear.jpg|53/54A rear | ||
Tek type a 1.jpg|Type A front | |||
Tek type a schem.png|schematic | |||
</gallery> | </gallery> | ||
[[Category:500 series plugins]] | [[Category:500 series plugins]] |
Revision as of 17:13, 14 October 2018
Template:Plugin Sidebar 2 The Tektronix Type A is a single-channel preamp introduced in 1959 for 500-series scopes. It provides two inputs and has a switch to select between them. A 545 with a Type A has a system risetime of 18 nanoseconds and a bandwidth of 20 MHz.
The plug-in uses a 12AU6 in the front end as a cathode follower. This input stage drives the second stage, a differential amplifier made of two more 12AU6 tubes. The second stage drives the output stage, a pair of cathode followers made of both halves of a 12AT7 tube. The plate of each output tube is connected to the cathode of the other output tube by a 5 nF capacitor. This "cross-coupling" extends the high-frequency response.
Although 1959 was the first year one could find a "Type A" in the catalog, the same instrument with earlier "Type 53/54A" nomenclature was in the August 1956 Short Form catalog, and its slower Type 53A ancestor was in the August 1954 catalog which introduced the first 500-series scopes, the 531 and the 535. Type 53A has only three tubes, and a bandwidth of 10 MHz in the 530 mainframes. Tek never documented its performance in the 540 mainframes.
Type A was the first letter-series plug-in to be discontinued, in 1962. Customers were told to get Type B instead, although it cost more.
Specifications
Please add
Pictures
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53A front
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53A chassis
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53A chassis bottom
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53/54A front
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53/54A top (dirty, missing two tubes)
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53/54A bottom
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53/54A left
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53/54A rear
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Type A front
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schematic