1900-A: Difference between revisions

Latest revision as of 20:34, 14 May 2024

General Radio 1900-A

Wave Analyzer

Available from 1963 to 1973

Manuals

General Radio 1900-A Wave Analyzer Manual 1900-0100-A 1965

Catalog History

Document	Year	Page
Catalog R	1963	14
Catalog S	1965	28
Catalog T	1968	30
Catalog U	1970	44
Catalog73	1973	60

(All manuals in PDF format unless noted otherwise)

The General Radio 1900-A Wave Analyzer was introduced in Catalog R (1963) and remained available through Catalog 1973.

The Type 1900-A Wave Analyzer is designed to measure and analyze electrical signals between 20 Hz and 54 kHz at bandwidths as narrow as 3 Hz. It has a built-in tracking generator whose frequency is synchronized with the analyzer frequency. This generator can be used as a source for bridges or networks, and the output can be measured with high selectivity to reduce noise and harmonics.

Applications include analyzing filters and frequency response of amplifiers or networks.

When coupled with a Type 1521-B Graphic Level Recorder, a permanent record of the spectrum of interest can be produced. The combination of 1900-A and 1521-B make up the Type 1910 Recording Wave Analyzer.

The 1900-A is a complex instrument but major components are housed in their respective shielded enclosures. These sub-assemblies are connected using RCA and Jones type connectors, simplifying service.

Specifications

Frequency Range: 20 to 54,000 Hz
Accuracy of Calibration: ±(½% +5 Hz) up to 50 kHz;. ±1% beyond 50 kHz
Incremental Frequency Dial (ΔF): ±100 Hz. accuracy is ±2 Hz below 2 kHz, ±5 Hz up to 50 kHz
Selectivity: three bandwidths (3, 10, and 50 Hz) selected by switch
Input Impedance: 1 MΩ on all ranges
Input Voltage Range: 30 μV to 300 V full scale

Links

Photos

Top View

Left View

Right View

Bottom View

Rear View

@@ Line 1: / Line 1: @@
-Type '''1900-A Wave Analyzer'''.
+{{GR Product
+|model=1900-A
+|codes=1900-9801
+|class=wave analyzer
+|summary=Wave Analyzer
+|image=GR 1900-A Close-Up.jpg
+|caption=General Radio 1900-A Wave Analyzer
+|series=1900
+|introduced=1963
+|discontinued=1973
+|designers=
+|manuals=
+* [[Media:GR 1900-A Wave Analyzer 1900-0100-A 05_1965.pdf|General Radio 1900-A Wave Analyzer Manual 1900-0100-A 1965]]
+{{Catalog History}}
+}}
+The {{Title|General Radio 1900-A Wave Analyzer}} was introduced in {{Catalog R}} and remained available through {{Catalog 1973}}.
+The Type 1900-A Wave Analyzer is designed to measure and analyze electrical signals between 20 Hz and 54 kHz at bandwidths as narrow as 3 Hz.
+It has a built-in tracking generator whose frequency is synchronized with the analyzer frequency.
+This generator can be used as a source for bridges or networks, and the output can be measured with high selectivity to reduce noise and harmonics.
+Applications include analyzing filters and frequency response of amplifiers or networks.
+When coupled with a [[1521-B|Type 1521-B Graphic Level Recorder]], a permanent record of the spectrum of interest can be produced.
+The combination of 1900-A and 1521-B make up the [[1910|Type 1910 Recording Wave Analyzer]].
+The 1900-A is a complex instrument but major components are housed in their respective shielded enclosures.
+These sub-assemblies are connected using RCA and Jones type connectors, simplifying service.
 ==Specifications==
+* '''Frequency Range:''' 20 to 54,000 Hz
+* '''Accuracy of Calibration:''' ±(½% +5 Hz) up to 50 kHz;. ±1% beyond 50 kHz
+* '''Incremental Frequency Dial (ΔF):''' ±100 Hz. accuracy is ±2 Hz below 2 kHz, ±5 Hz up to 50 kHz
+* '''Selectivity:''' three bandwidths (3, 10, and 50 Hz) selected by switch
+* '''Input Impedance:''' 1 MΩ on all ranges
+* '''Input Voltage Range:''' 30 μV to 300 V full scale
 ==Links==
+* [[Media:GR Exp 1900-A 04_1964.pdf|Experimenter April 1964 describing Type 1900-A]]
+* [[Media:GR Exp 1900-A 08_1966.pdf|Experimenter August 1966 describing Type 1900-A]]
+* [[1910]]
 ==Photos==
 <gallery>
+GR-1910-ad-Electronics-1969-10-04.jpg
+GR 1900-A Front.jpg
+GR 1900-A Case Side.jpg
+GR 1900-A Case Rear.jpg
+GR 1900-A Case Rear Close-Up.jpg
+</gallery>
+===Top View===
+<gallery>
+GR 1900-A 1 Inside Top.jpg
+GR 1900-A 2 Inside Top Left.jpg
+GR 1900-A 3 Inside Top Center.jpg
+GR 1900-A 4 Inside Top Right.jpg
+GR 1900-A 5 Inside Top Center Close-up.jpg
+</gallery>
+===Left View===
+<gallery>
+GR 1900-A 1 Inside Left Side.jpg
+GR 1900-A 2 Inside Rear Board B.jpg
+GR 1900-A 3 Inside Bottom Left  Board.jpg
+GR 1900-A 4 Inside Bottom Board A.jpg
+GR 1900-A 5 Inside Left Upper.jpg
+</gallery>
+===Right View===
+<gallery>
+GR 1900-A 1 Inside Right Side.jpg
+GR 1900-A 2 Inside Right Top.jpg
+GR 1900-A 3 Inside Right upper.jpg
+GR 1900-A 4 Inside Right Lower.jpg
+GR 1900-A 5 Inside Left Side Open.jpg
+</gallery>
+===Bottom View===
+<gallery>
+GR 1900-A 1 Inside Bottom.jpg
+GR 1900-A 2 Inside Bottom Right.jpg
+GR 1900-A 3 Inside Bottom Left Close-Up.jpg
+GR 1900-A 4 Inside Bottom Left.jpg
+GR 1900-A 5 Inside Bottom Left Open.jpg
+GR 1900-A 6 Inside Bottom Open.jpg
+GR 1900-A 7 Inside Bottom Left Open A.jpg
+GR 1900-A 8 Inside Bottom Right Open.jpg
+</gallery>
+===Rear View===
+<gallery>
+GR 1900-A 1 Inside Rear Left.jpg
+GR 1900-A 2 Inside Rear Right Upper.jpg
+GR 1900-A 3 Inside Upper Left.jpg
+GR 1900-A 4 Inside Rear Center.jpg
+GR 1900-A 5 Inside Rear Upper Right.jpg
+GR 1900-A 6 Inside Rear Lower Right.jpg
+GR 1900-A 7 Inside Rear Right.jpg
 </gallery>
 [[Category:Wave Analyzer]]
+__NOTOC__