P80: Difference between revisions

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 Tektronix Type 80 / P80 Manual (OCR, sn 4986, color schematics) Tektronix Type 80 / P80 Manual with Mod 5107 (OCR)

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 V_DC in AC position; max. 600 V_DC with optional capacitive coupler; max. 100 V_DC when DC coupled (without optional attenuators)

Pictures

Vents for tube
P80 attached to Model 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
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

@@ Line 1: / Line 1: @@
-The Tektronix 80P is the probe for the [[80|Type 80]] plug-in for the [[581]] and [[581]] 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.
+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.
+The P80 came with five attenuator heads:
+{| 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==
 <gallery>
-File:Tek p80 side.JPG
+Tek p80 side.JPG
-File:Tek p80 rear.JPG|Vents for tube
+Tek p80 rear.JPG|Vents for tube
-File:Tek p80 connector.JPG|Connector, plugs into [[80|Type 80]]
+Tek p80 internal.JPG
-File:Tek p80 internal.JPG
+Tek p80 internal tube.JPG
-File:Tek p80 internal circuit.JPG
+Tek p80 internal circuit.JPG
-File:Tek p80 internal circuit 2.JPG
+Tek p80 internal circuit 2.JPG
-File:Tek p80 internal tube.JPG
+Tek type 80 with probe.jpg | P80 attached to [[80|Model 80]]
-File:Tek 80 probe schem.png|Schematic
+Tek p80 connector.JPG|[[Amphenol 165 series connectors|Amphenol 165-14 connector]], plugs into [[80|Type 80]]
+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
 </gallery>
+==Components==
+{{Parts|P80}}
+[[Category:Active oscilloscope probes]]