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The Tektronix Type P plug-in is a | {{Plugin Sidebar | ||
|manufacturer=Tektronix | |||
|series=500-series scopes | |||
|type=Type P | |||
|summary=Calibration aid | |||
|image=Tek p front.jpeg | |||
|caption=Tek Type P | |||
|introduced=1959 | |||
|discontinued=1964 | |||
|designers= | |||
|manuals= | |||
* [[Media:070-346.pdf|Tektronix Type P Manual]] (OCR) | |||
* [[Media:tek_type_p_fcp.pdf|Tektronix Type P Factory Calibration Procedure]] (OCR) | |||
* [[Media:Tek type p irb.pdf|Tektronix Type P Instrument Reference Book]] (OCR) | |||
}} | |||
The '''Tektronix Type P''' plug-in is a calibration aid [[introduced in 1959]] for [[500-series scopes]] that applies a fast (4 nanosecond risetime) voltage step to the mainframe vertical amplifier via plug-in connector pins 1 and 3. | |||
Type P is designed to simulate a perfectly-adjusted Type [[K]] plug-in being driven by a Type [[107]] square-wave generator, and is used when adjusting the peaking coils and the [[delay line]]. | |||
The idea is to calibrate a mainframe using Type P, then use this mainframe and a 107 to calibrate other plug-ins. | |||
The Type P does not contain any tubes, transistors, or tunnel diodes. | |||
It does contain a [[selenium rectifiers|selenium rectifier]] and a [[mercury switch]]. | |||
The selenium rectifier in the Type P has four sections and full-wave rectifies the 6.3 V<sub>AC</sub> that is supplied by the scope mainframe on pins 13 and 14. | |||
The 120 Hz (assuming 60 Hz mains) component of the full-wave rectified waveform is applied to the coil of the mercury switch to drive the opening and closing of the contacts. | |||
An adjustable fraction of the DC component of the full-wave rectified waveform is applied to the coil of the mercury switch to create a constant component in the magnetic field to bias the switch contacts to the best operating point. | |||
The Type P was the only new plug-in for [[introduced in 1959|1959]], except for the upgrade from Type 53/54[[C]] to Type [[CA]]. It was dropped after 1963, replaced by the [[TU-7]]. | |||
==Pictures== | |||
<gallery> | <gallery> | ||
Tek_type_p.jpg|Type P | |||
Type_p_inside.jpg|Type P | |||
Type_p_schem.png|Type P Schematic | |||
Tek 53-54p front.jpg|Type 53/54P | |||
Tek 53-54p inside.jpg|Type 53/54P | |||
</gallery> | </gallery> | ||
{{Parts|P}} | |||
[[Category:500 series plugins]] | |||
[[Category:Calibration fixtures]] |