P80: Difference between revisions

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The '''Tektronix P80''' is the probe for the [[80|Type 80]] plug-in for the [[581]] and [[585]] oscilloscopes.
{{Probe Sidebar
It is a cathode-follower probe, and contains a [[6688]] pentode.
|manufacturer=Tektronix
The tube functions as a phase splitter, not a simple cathode-follower.
|model=P80
|summary=Active probe for 581/585+80
|image=Tek p80 side.JPG
|caption=Tektronix P80
|for=80
|introduced=1959
|discontinued=(?)
|manuals=
* [[Media:070-276.pdf|Tektronix Type 80 / P80 Manual]] (OCR, sn 4986, color schematics)
* [[Media:070-276 with mod 5107.pdf|Tektronix Type 80 / P80 Manual with Mod 5107]] (OCR)
}}
The '''Tektronix P80''' is an active probe that works only with the [[80|Type 80]] plug-in for the [[581]] and [[585]] oscilloscopes.


{{MissingSpecs}}
The P80 contains a [[6688|6688 (E180F) miniature RF pentode]], which functions as a phase splitter providing 93 Ω differential outputs, not a simple cathode-follower.


==Manuals==
The P80 came with five attenuator heads:
* [http://bama.edebris.com/download/tek/80/Tek%2080.pdf Tektronix Type 80 / P80 Manual (PDF)]
{| class="wikitable" style="margin:auto"
|+ P80 attenuator heads
! part number
! attenuation factor
|-
| 010-306 || 2x
|-
| 010-307 || 5x
|-
| 010-308 || 10x
|-
| 010-309 || 20x
|-
| 010-310 || 50x
 
|}
 
{{BeginSpecs}}
{{Spec | Rise time | 3.5 ns in combination with [[80|Type 80]] }}
{{Spec | Bandwidth | DC to 100 MHz (from 25 Ω source) in combination with [[80|Type 80]] }}
{{Spec | Deflection | 0.1 V/Div (fixed) without optional attenuators; 0.2/0.4/0.5/1/2/5/10/20/50/100/200/500/1000 V/Div with attenuators }}
{{Spec | Input impedance | 100 kΩ // <14 pF (including capacitive coupler, without attenuators) }}
{{Spec | Input voltage | max. 150 V<sub>DC</sub> in AC position; max. 600 V<sub>DC</sub> with optional capacitive coupler; max. 100 V<sub>DC</sub> when DC coupled (without optional attenuators) }}
{{EndSpecs}}


==Pictures==
==Pictures==
Line 12: Line 46:
Tek p80 side.JPG
Tek p80 side.JPG
Tek p80 rear.JPG|Vents for tube
Tek p80 rear.JPG|Vents for tube
Tek p80 connector.JPG|[[Amphenol 165 series connectors|Amphenol 165-14 connector]], plugs into [[80|Type 80]]
Tek p80 internal.JPG
Tek p80 internal.JPG
Tek p80 internal tube.JPG
Tek p80 internal circuit.JPG
Tek p80 internal circuit.JPG
Tek p80 internal circuit 2.JPG
Tek p80 internal circuit 2.JPG
Tek p80 internal tube.JPG
Tek type 80 with probe.jpg | P80 attached to [[80|Model 80]]
Tek p80 connector.JPG|[[Amphenol 165 series connectors|Amphenol 165-14 connector]], plugs into [[80|Type 80]]
1959 catalog photo of 581.jpg|Photo from 1959 catalog showing Type 581 mainframe, Type 80 plug-in, Type P80 probe, and attenuator heads
Tek 80 probe schem.png|Schematic
Tek 80 probe schem.png|Schematic
</gallery>
</gallery>
==Components==
{{Parts|P80}}




[[Category:Active Oscilloscope Probes]]
[[Category:Active oscilloscope probes]]

Latest revision as of 10:47, 20 January 2024

Tektronix P80
Active probe for 581/585+80
Tektronix P80

Compatible with 80

Produced from 1959 to (?)

Manuals


Manuals – Specifications – Links – Pictures

The Tektronix P80 is an active probe that works only with the Type 80 plug-in for the 581 and 585 oscilloscopes.

The P80 contains a 6688 (E180F) miniature RF pentode, which functions as a phase splitter providing 93 Ω differential outputs, not a simple cathode-follower.

The P80 came with five attenuator heads:

P80 attenuator heads
part number attenuation factor
010-306 2x
010-307 5x
010-308 10x
010-309 20x
010-310 50x

Key Specifications

Rise time 3.5 ns in combination with Type 80
Bandwidth DC to 100 MHz (from 25 Ω source) in combination with Type 80
Deflection 0.1 V/Div (fixed) without optional attenuators; 0.2/0.4/0.5/1/2/5/10/20/50/100/200/500/1000 V/Div with attenuators
Input impedance 100 kΩ // <14 pF (including capacitive coupler, without attenuators)
Input voltage max. 150 VDC in AC position; max. 600 VDC with optional capacitive coupler; max. 100 VDC when DC coupled (without optional attenuators)

Pictures

  • Vents for tube

    Vents for tube

  • P80 attached to Model 80

    P80 attached to Model 80

  • Amphenol 165-14 connector, plugs into Type 80

    Amphenol 165-14 connector, plugs into Type 80

  • Photo from 1959 catalog showing Type 581 mainframe, Type 80 plug-in, Type P80 probe, and attenuator heads

    Photo from 1959 catalog showing Type 581 mainframe, Type 80 plug-in, Type P80 probe, and attenuator heads

  • Schematic

    Schematic

Components

Some Parts Used in the P80

Part Part Number(s) Class Description Used in
6688 154-0215-00 Vacuum Tube (Pentode) miniature high-slope VHF/UHF pentode P80 • 3T77 • 3T77A • 4S2A • 526 • TR-4602
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