Nelson-Ross PSA-011: Difference between revisions

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The Nelson-Ross PSA-011 is a spectrum analyzer plug-in for [[500-series scopes]].
{{Plugin Sidebar
|manufacturer=Nelson-Ross
|series=500-series scopes
|type=PSA-011
|summary=20 kHz Spectrum Analyzer plug-in
|image=Nelson-ross-psa011-2.jpg
|caption=Nelson-Ross PSA-011 front view
|introduced=(?)
|discontinued=(?)
|manuals=
* [[Media:Nelson-ross psa-001 002 003 011 012 013 plug-ins instruction sch.pdf|Manual for Nelson-Ross 001, 002, 003, 011, 012, and 013]]
}}
The '''Nelson-Ross PSA-011''' is a spectrum analyzer plug-in for [[500-series scopes]].
The center frequency range is 10 Hz to 20 kHz.  It can display amplitude in  
The center frequency range is 10 Hz to 20 kHz.  It can display amplitude in  
linear or log scale.   
linear or log scale.   


The input is high-impedance and is AC-coupled.  The PSA-011 is a single-conversion
{{MissingSpecs}}
architecture with a pair of [[6BH6]] tubes serving as a balanced mixer. 
After IF filtering and amplification, the signal is detected using a [[1N34A]]
germanium diode. 
The detected voltage from the diode directly drives
pin 3 (vertical -) of the scope plug-in interface connector. 
Pin 1 (vertical +) of the scope plug-in interface connector
is fed a DC vertical position voltage by the PSA-011.


The voltage-controlled local oscillator is tuned
==Internals==
using a variable-reactance tube, V6, a [[6201]].
The input is high-impedance and is AC-coupled.  The PSA-011 is a single-conversion architecture with a pair of [[6BH6]] tubes serving as a balanced mixer. 
After IF filtering and amplification, the signal is detected using a [[1N34A]] germanium diode. 
The detected voltage from the diode directly drives pin 3 (vertical -) of the scope plug-in interface connector. 
Pin 1 (vertical +) of the scope plug-in interface connector is fed a DC vertical position voltage by the PSA-011.


* [http://w140.com/kurt/nelson_ross_001-002-003-011-012-013.pdf Manual for Nelson-Ross 001, 002, 003, 011, 012, and 013 (PDF)]
The voltage-controlled local oscillator is tuned using a variable-reactance tube, V6, a [[6201]].
 
There were at least two major versions produced, without changing the model number. Compare the picture from the manual below with the other front panel photographs.
 
There was also a tracking generator, called the Nelson Ross 101 SYNCHRO-SWEEP Generator. These are very rare.
 
==Pictures==


<gallery>
<gallery>
File:PC280162.JPG|front
NR-011-manual-image.png|Front panel, as shown in manual.
File:PC280163.JPG|front 2
PC280162.JPG|Front
File:PC280172.JPG|front right
PC280163.JPG|Front 2
File:PC280171.JPG|front left
PC280172.JPG|Front right
File:PC280170.JPG|bottom
PC280171.JPG|Front left
File:PC280165.JPG|bottom 2
PC280170.JPG|Bottom
File:PC280166.JPG|left
PC280165.JPG|Bottom 2
File:PC280173.JPG|rear right
PC280166.JPG|Left
File:PC280174.jpg|rear
PC280173.JPG|Rear right
File:PC280169.JPG|rear 2
PC280174.jpg|Rear
File:PC280164.JPG|rear 3
PC280169.JPG|Rear 2
Nelson-ross_011_schem_sm.png|schematic
PC280164.JPG|Rear 3
Nelson-ross_011_schem_sm.png|Schematic
</gallery>
</gallery>
==Components==
{{Parts|Nelson-Ross PSA-011}}
[[Category:500 series plugins]]
[[Category:Spectrum analyzers]]
[[Category:Nelson-Ross products]]

Latest revision as of 07:01, 6 December 2023

Nelson-Ross PSA-011
20 kHz Spectrum Analyzer plug-in
Nelson-Ross PSA-011 front view

Compatible with 500-series scopes

Produced from (?) to (?)

Manuals
(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

The Nelson-Ross PSA-011 is a spectrum analyzer plug-in for 500-series scopes. The center frequency range is 10 Hz to 20 kHz. It can display amplitude in linear or log scale.

Key Specifications

  • please add

Internals

The input is high-impedance and is AC-coupled. The PSA-011 is a single-conversion architecture with a pair of 6BH6 tubes serving as a balanced mixer. After IF filtering and amplification, the signal is detected using a 1N34A germanium diode. The detected voltage from the diode directly drives pin 3 (vertical -) of the scope plug-in interface connector. Pin 1 (vertical +) of the scope plug-in interface connector is fed a DC vertical position voltage by the PSA-011.

The voltage-controlled local oscillator is tuned using a variable-reactance tube, V6, a 6201.

There were at least two major versions produced, without changing the model number. Compare the picture from the manual below with the other front panel photographs.

There was also a tracking generator, called the Nelson Ross 101 SYNCHRO-SWEEP Generator. These are very rare.

Pictures

  • Front panel, as shown in manual.

    Front panel, as shown in manual.

  • Front

    Front

  • Front 2

    Front 2

  • Front right

    Front right

  • Front left

    Front left

  • Bottom

    Bottom

  • Bottom 2

    Bottom 2

  • Left

    Left

  • Rear right

    Rear right

  • Rear

    Rear

  • Rear 2

    Rear 2

  • Rear 3

    Rear 3

  • Schematic

    Schematic

Components

Some Parts Used in the Nelson-Ross PSA-011

Part Part Number(s) Class Description Used in
1N34A Discrete component germanium point-contact diode Nelson-Ross PSA-011
6201 Vacuum Tube (Dual Triode) dual high-gain triode Nelson-Ross PSA-011
6BH6 154-0026-00 • 154-0285-00 Vacuum Tube (Pentode) pentode 130 • 162 • 310 • 310A • 512 • 517 • 517A • 524 • Nelson-Ross PSA-011
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