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[[File:P6042.png|thumb|350px|right|P6042, catalog image]]
{{Probe Sidebar
The '''Tektronix P6042''' is a DC to 50 MHz current probe.
|manufacturer=Tektronix
|model=P6042
|summary=DC−50 MHz current probe
|image=P6042-complete.jpg
|caption=P6042 complete
|for=50 Ω scope inputs
|introduced=1967
|discontinued=(?)
|designers=Cal Hongel;
|manuals=
* [[Media:070-0629-00.pdf|Tektronix P6042 Manual]]
* [[Media:Tek p6042 calibration procedure dec 1967.pdf|Tektronix P6042 Calibration Procedure]]
}}
The '''Tektronix P6042''' is a DC to 50 MHz current probe [[introduced in 1967]].  It was designed by [[Cal Hongel]].


The sensor contains a current transformer for HF and a hall effect sensor for LF/DC components.   
The sensor contains a current transformer for HF and a hall effect sensor for LF/DC components.   
The amplifier combines DC/LF and HF signals.
The amplifier combines DC/LF and HF signals.
The [[AM503#Background|AM503]], introduced about a decade later, is a redesign of the P6042 with removable probes.


{{BeginSpecs}}
{{BeginSpecs}}
{{Spec | Bandwidth | DC to 50 MHz (-3 dB) }}
{{Spec | Bandwidth     | DC to 50 MHz (−3 dB) }}
{{Spec | Rise time | 7 ns }}
{{Spec | Rise time     | 7 ns }}
{{Spec | Ranges | 1 mA/Div to 1 A/Div (1-2-5) }}
{{Spec | Ranges       | 1 mA/div to 1 A/div (1–2–5) with scope in 50 mV/div }}
{{Spec | Output | to 50 Ω scope input at 50 mV/Div }}
{{Spec | Output       | to 50 Ω scope input at 50 mV/div }}
{{Spec | Maximum input | 10 A DC+peak AC in 5 mA to 1 A ranges, 0.5 A in 1 mA and 2 mA ranges }}
{{Spec | Maximum input | 10 A DC+peak AC in 5 mA to 1 A ranges, 0.5 A in 1 mA and 2 mA ranges }}
{{Spec | Power | 90-136 or 180-272 V, 20 W}}
{{Spec | Power         | 90-136 or 180-272 V, 20 W }}
{{EndSpecs}}
{{EndSpecs}}


==Manuals==
==Internals==
* [http://bama.edebris.com/manuals/tek/p6042/ P5042 manual @ BAMA]
Locking the probe requires pushing past the resistance felt when the core almost closes.  This engages a mechanism that firmly presses both core halves together, and extinguishes the "Probe unlocked" indicator.
 
The P6042's core halves are precision lapped and potted with epoxy.  They have Mu-metal screening.  The lower (fixed) core also contains the Hall element.
Unfortunately, the P6042 probe is quite sensitive mechanically, and in many units offered for sale, the cores are damaged.
 
The amplifier front-end is constructed using a 156-0014-00 differential amplifier integrated circuit, labelled "M18", which [[Media:Tektronix_Xref_sm.pdf|cross-references]] to a long-obsolete Teledyne "831-BE".  [[Jim Williams]]' [https://www.analog.com/media/en/technical-documentation/application-notes/an61fa.pdf Applicaion Note 61] contains a replacement circuit using LT1228 opamps (page 19).
 
==Prices==
* $525 in 1967 (~$5,500 in 2022 Dollars)


==Links==
==Links==
* [http://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_other/P6042.htm Tek P6042 page @ amplifier.cd]
* [[Media:Service Scope 46 Oct 1967.pdf | Service Scope 46, October 1967]]
* [https://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_other/P6042.htm Tek P6042 page @ amplifier.cd]
* [http://www.barrytech.com/tektronix/probes/tekp6042.html Tek P6042 page @ barrytech.com]
* [http://www.barrytech.com/tektronix/probes/tekp6042.html Tek P6042 page @ barrytech.com]
* [http://www.radiomuseum.org/r/tektronix_current_probe_dc_to_50_m.html Tek P6042 page @ radiomuseum.org]
* [https://www.radiomuseum.org/r/tektronix_current_probe_dc_to_50_m.html Tek P6042 page @ radiomuseum.org]
* [http://www.pa4tim.nl/?p=3135 P6042 repair by Fred, PA4TIM]
* [https://www.pa4tim.nl/?p=3135 P6042 repair by Fred, PA4TIM]
* [https://www.eetimes.com/author.asp?section_id=36&doc_id=1330593 P6042 teardown @ EEtimes]
{{Documents|Link=P6042}}
{{PatentLinks|P6042}}


==Pictures==
==Pictures==
[[Category:Image needed]] ''please add''
<gallery>
p6042-front.jpg | amplifier front
p6042-complete.jpg | amplifier and sensor
p6042-sensor.jpg | sensor detail
p6042-back.jpg | rear view
P6042.png | catalog image
Tek p6042 amp internal1.jpg|P6042 amplifier internal view
Tek p6042 amp internal2.jpg|P6042 amplifier internal view
Tek p6042 amp internal3.jpg|P6042 amplifier internal view
P6042 probe top.jpg    | Top half core of probe
P6042 probe bottom.jpg | Bottom of probe with half core and Hall sensor
</gallery>




[[Category:Oscilloscope current probes]]
[[Category:Oscilloscope current probes]]

Latest revision as of 04:40, 13 July 2024

Tektronix P6042
DC−50 MHz current probe
P6042 complete

Compatible with 50 Ω scope inputs

Produced from 1967 to (?)

Manuals


Manuals – Specifications – Links – Pictures

The Tektronix P6042 is a DC to 50 MHz current probe introduced in 1967. It was designed by Cal Hongel.

The sensor contains a current transformer for HF and a hall effect sensor for LF/DC components. The amplifier combines DC/LF and HF signals.

The AM503, introduced about a decade later, is a redesign of the P6042 with removable probes.

Key Specifications

Bandwidth DC to 50 MHz (−3 dB)
Rise time 7 ns
Ranges 1 mA/div to 1 A/div (1–2–5) with scope in 50 mV/div
Output to 50 Ω scope input at 50 mV/div
Maximum input 10 A DC+peak AC in 5 mA to 1 A ranges, 0.5 A in 1 mA and 2 mA ranges
Power 90-136 or 180-272 V, 20 W

Internals

Locking the probe requires pushing past the resistance felt when the core almost closes. This engages a mechanism that firmly presses both core halves together, and extinguishes the "Probe unlocked" indicator.

The P6042's core halves are precision lapped and potted with epoxy. They have Mu-metal screening. The lower (fixed) core also contains the Hall element. Unfortunately, the P6042 probe is quite sensitive mechanically, and in many units offered for sale, the cores are damaged.

The amplifier front-end is constructed using a 156-0014-00 differential amplifier integrated circuit, labelled "M18", which cross-references to a long-obsolete Teledyne "831-BE". Jim Williams' Applicaion Note 61 contains a replacement circuit using LT1228 opamps (page 19).

Prices

  • $525 in 1967 (~$5,500 in 2022 Dollars)

Links

Documents Referencing P6042

Document Class Title Authors Year Links
Tekscope 1974 V6 N3.pdf Article Using your oscilloscope probe (Part 2) Riley Stock 1974 P6201 • P6042

Patents that may apply to P6042

Page Title Inventors Filing date Grant date Links
Patent US 3482163A Magnetic signal measuring device including degaussing means Bill Peek • Eldon Lee Hoven 1967-05-24 1969-12-02 P6042 • A6302 • A6302XL • A6303 • A6303XL • A6304XL • A6312 • AM503 • AM503A • AM503B • AM5030 • 11A16

Pictures

  • amplifier front

    amplifier front

  • amplifier and sensor

    amplifier and sensor

  • sensor detail

    sensor detail

  • rear view

    rear view

  • catalog image

    catalog image

  • P6042 amplifier internal view

    P6042 amplifier internal view

  • P6042 amplifier internal view

    P6042 amplifier internal view

  • P6042 amplifier internal view

    P6042 amplifier internal view

  • Top half core of probe

    Top half core of probe

  • Bottom of probe with half core and Hall sensor

    Bottom of probe with half core and Hall sensor

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