1142-A: Difference between revisions
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==Manuals== | ==Manuals== | ||
* [[Media:GR 1142A Frequency Meter & Discriminator.pdf|General Radio 1142-A Frequency Meter and Discriminator 1142-100-E | * [[Media:GR 1142A Frequency Meter & Discriminator.pdf|General Radio 1142-A Frequency Meter and Discriminator 1142-100-E 1969 ]](OCRed) | ||
==Links== | ==Links== | ||
* [[Media:GRwiki Exp 1142-A 1961-2.pdf|Experimenter describing 1142-A February 1961]] | * [[Media:GRwiki Exp 1142-A 1961-2.pdf|Experimenter describing 1142-A February 1961 ]](OCRed) | ||
==Photos== | ==Photos== | ||
Revision as of 20:13, 22 February 2024
The General Radio 1142-A is an analog frequency meter and discriminator introduced in 1961 Catalog Q and remained available through Catalog T 1968.
Specifications
- Frequency: 3 Hz to 1.5 MHz in 5 decade ranges.
- Maximum Voltage: 300 V peak-to-peak up to 150 kc, 70 V peak-to-peak above 150 kc.
- Sensitivity (rms/Impedance): 20 mv, 20 Hz to 150 kHz; rising to 200 mv at 3 Hz and 1.5 MHz. Up to 5 V for narrow pulses (1 ns). 100 kΩ. impedance dropping to minimum of 5 kΩ. above 500 kHz.
- Accuracy: Nominal accuracy is 0.2% of full scale for all but the extremes of its frequency coverage.
