1840-A: Difference between revisions

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{{GR Product
{{GR Product
|model=1840-A
|model=1840-A
|codes=1840-9701
|class=meters
|class=meters
|summary=output power meter
|summary=Output power meter
|image=GR 1840-A Front.jpg
|image=GR 1840-A Front.jpg
|caption=General Radio 1840-A Output Power Meter
|caption=General Radio 1840-A Output Power Meter
|series=
|series=
|introduced=1961
|introduced=1961
|discontinued=(?)
|discontinued=1978+
|designers=
|designers=
|manuals=
|manuals=
* [[Media:GR 1840-A Output Power Meter.pdf|General Radio 1840-A Manual 1840-01OO-G (1972)]]
* [[Media:GR 1840-A Output Power Meter.pdf|General Radio 1840-A Manual 1840-0100-G (1972)]]
{{Catalog History}}
}}
}}
The {{Title|General Radio 1840-A Output Power Meter}} was introduced in {{Catalog R}}.  It remained available through {{Catalog 1978}}. It replaces Type [[583-A]] designed in 1932. 


The '''General Radio 1840-A''' is an output power meter [[introduced in 1961]] Catalog Q and remained available through Catalog78.
The 1840-A is an audio power output meter rated at 20 watts maximum at 48 different load impedances in two ranges.  
The 1840-A is an audio power output meter rated at 20 watts maximum at 48 different load impedances in two ranges. Although rated at 20 W  
Although rated at 20 W maximum, the manual describes how this figure can be extended to 200 W.
maximum the manual describes how this figure can be exteded to 200 W, see the manual below.
It replaces Type [[583-A]] designed in 1932.


==Specifications==
==Specifications==
* '''Power:''' 0.1 mW to 20 W.
* '''Power:''' 0.1 mW to 20 W
* '''Impedance:''' 0.6 Ω to 32 kΩ in 2 ranges.
* '''Impedance:''' 0.6 Ω to 32 kΩ in 2 ranges
* '''Impedance Accuracy:''' Maximum error does exceed ± 5% from 100 to 10.000 cps or ± 50% from 20 to 30,000 Hz.
* '''Impedance Accuracy:''' Maximum error ±5% from 100 Hz to 10 kHz, or ±50% from 20 Hz to 30 kHz


==Links==
==Links==

Latest revision as of 17:55, 16 April 2024

General Radio 1840-A
Output power meter
General Radio 1840-A Output Power Meter

Available from 1961 to 1978+

Manuals
Catalog History
 Document Year Page
Catalog R 1963 143
Catalog S 1965 176
Catalog T 1968 240
Catalog U 1970 262
Catalog73 1973 90
Catalog78 1978 181
(All manuals in PDF format unless noted otherwise)

The General Radio 1840-A Output Power Meter was introduced in Catalog R (1963). It remained available through Catalog 1978. It replaces Type 583-A designed in 1932.

The 1840-A is an audio power output meter rated at 20 watts maximum at 48 different load impedances in two ranges. Although rated at 20 W maximum, the manual describes how this figure can be extended to 200 W.

Specifications

  • Power: 0.1 mW to 20 W
  • Impedance: 0.6 Ω to 32 kΩ in 2 ranges
  • Impedance Accuracy: Maximum error ±5% from 100 Hz to 10 kHz, or ±50% from 20 Hz to 30 kHz

Links

Photos