Nelson-Ross PSA-011: Difference between revisions

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 Manual for Nelson-Ross 001, 002, 003, 011, 012, and 013 (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
Front 2
Front right
Front left
Bottom
Bottom 2
Left
Rear right
Rear
Rear 2
Rear 3
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

@@ Line 1: / Line 1: @@
 {{Plugin Sidebar
 |manufacturer=Nelson-Ross
+|series=500-series scopes
 |type=PSA-011
 |summary=20 kHz Spectrum Analyzer plug-in
@@ Line 7: / Line 8: @@
 |introduced=(?)
 |discontinued=(?)
-|series=500-series scopes
 |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]]
@@ Line 53: / Line 53: @@
 [[Category:Spectrum analyzers]]
 [[Category:Nelson-Ross products]]
-[[Category:Specifications needed]]