D: Difference between revisions

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<gallery>


File:D.jpeg
D.jpeg
File:D 1.JPG|Front
D 1.JPG|Front
File:D 1.JPG.JPG| Chassis
D 1.JPG.JPG| Chassis
File:D 3.JPG| Rubber support for elimination of microphonics
D 3.JPG| Rubber support for elimination of microphonics
File:D 4.JPG| Chassis bottom
D 4.JPG| Chassis bottom
File:Tek d early schem.png|Early Schematic
Tek d early schem.png|Early Schematic
File:Tek d late schem.png|Late Schematic
Tek d late schem.png|Late Schematic
File:Tek d late attenuators.png|Late Attenuators
Tek d late attenuators.png|Late Attenuators
File:Tek type d front.jpg|Front View (vertical position knob not original)
Tek type d front.jpg|Front View (vertical position knob not original)
Tek type d left2.jpg
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</gallery>


[[Category:500 series plugins]]
[[Category:500 series plugins]]
[[Category:Differential amplifiers]]
[[Category:Differential amplifiers]]

Revision as of 15:46, 12 November 2017

Template:Plugin Sidebar 2

The Tektronix Type D is a differential amplifier plug-in for 500-series scopes.

It has high gain, and the bandwidth depends on the gain, ranging from 2 MHz at 50 mV/div and up, to 300 kHz at 1 mV/div.

It displays the difference between two input signals, with a common-mode rejection ratio of 10,000. It has six tubes, on a shock-mounted subchassis to avoid microphonics.

Type D was introduced with the 531 and 535 in 1954 as Type 53D, was briefly renamed Type 53D/54D in 1955 with the introduction of the 541 and 545, then quickly renamed Type 53/54D, then shortened to Type D in 1959 with the introduction of the 5xxA scopes. Its last year was 1968, having been superseded by the constant-bandwidth model 1A6.

K, L, and T are tied for longest production life, at 16 years. B, D, and G are next at 15 years.

Lavoie Laboratories produced an unauthorized clone, the Lavoie LA-265-D.

Internals

Some production runs used a pair of 5814 tubes at the input while others used 12AU7's. These two tube types have different heater currents, and because the heaters are series-wired, you cannot switch from one type to the other without circuit modification.

Specifications

please add

Pictures