1803-A: Difference between revisions

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The {{Title|General Radio 1803-A Vacuum-Tube Voltmeter}} was available in {{Catalog M}} only.  
The {{Title|General Radio 1803-A Vacuum-Tube Voltmeter}} was available in {{Catalog M}} only.  


The Type 1803-A is a AC vacuum tube voltmeter with a range from 0.1 to 150 V<sub>RMS</sub> at frequencies to 100 MHz without corrections.  Except on the lowest range, its peak reading but the scales are calibrated in RMS volts for sinusoidal voltages.  It features hard-wired probe containing dual-diode vacuum tube rectifier. From 20 Hz to about 100 Mhz the accuracy is ±3% but usable up to 200 MHz, refer to the manual.
The Type 1803-A is an AC vacuum-tube voltmeter with a range from 0.1 to 150 V<sub>RMS</sub> at frequencies to 100 MHz without corrections.   
Except on the lowest range, it is peak-reading, but the scales are calibrated in RMS volts for sinusoidal voltages.   
 
The 1803-A features a hard-wired probe containing a dual-diode vacuum tube rectifier. From 20 Hz to about 100 MHz, accuracy is ±3% but the instrument is usable up to 200 MHz, refer to the manual for details.


==Specifications==
==Specifications==
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* '''Voltage Range:''' 0.1 to 150 V<sub>RMS</sub>
* '''Voltage Range:''' 0.1 to 150 V<sub>RMS</sub>
* '''Accuracy:''' ±3% of full scale on all ranges
* '''Accuracy:''' ±3% of full scale on all ranges
* '''Input Impedance:''' 7.7 MΩ at low frequencies, See Manual
* '''Input Impedance:''' 7.7 MΩ at low frequencies (see manual)
* '''Frequency:''' 100 MHz; up to 200 Mhz with corrections
* '''Frequency:''' 100 MHz; up to 200 MHz with corrections


==Links==
==Links==


* [[Media:GR Exp 1803-A 04_1950.pdf|Experimenter April 1950 describing Type 1803-A]]
* [[Media:GR Exp 1803-A 04_1950.pdf|Experimenter April 1950 describing Type 1803-A]]
* [[1803-B]]


==Photos==
==Photos==

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