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{{Plugin Sidebar | {{Plugin Sidebar | ||
|manufacturer=Tektronix | |||
|series=500-series scopes | |||
series= | |type=Type P | ||
image=Tek type p.jpg | | |summary=Calibration aid | ||
caption=Tek Type P | | |image=Tek type p.jpg | ||
introduced=1959 | | |caption=Tek Type P | ||
discontinued=1964 | | |introduced=1959 | ||
manuals= | |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]] | 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. | ||
for [[500-series scopes]]. | |||
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. | |||
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. | The Type P does not contain any tubes, transistors, or tunnel diodes. | ||
It does contain a [[selenium rectifiers|selenium rectifier]] and a [[mercury switch]]. | 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 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 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. | ||
The 120 Hz (assuming 60 Hz mains) component of the full-wave rectified waveform | 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. | ||
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 | 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]]. | ||
from Type 53/54[[C]] to Type [[CA]]. It was dropped after 1963, replaced by the [[TU-7]]. | |||
==Pictures== | ==Pictures== | ||
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Tek 53-54p inside.jpg|Type 53/54P | Tek 53-54p inside.jpg|Type 53/54P | ||
</gallery> | </gallery> | ||
{{Parts|P}} | |||
[[Category:500 series plugins]] | [[Category:500 series plugins]] | ||
[[Category:Calibration fixtures]] | [[Category:Calibration fixtures]] |