1142-A: Difference between revisions

Revision as of 12:00, 22 February 2024

The General Radio 1142-A is an analog frequency meter and discriminator introduced in 1961 Catalog Q and available to Catalog T 1968.

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.

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	[[File:GR 1142-A Front.jpg\|thumb\|450px\|right\|General Radio 1142-A Frequency Meter and Discriminator]]		[[File:GR 1142-A Front.jpg\|thumb\|450px\|right\|General Radio 1142-A Frequency Meter and Discriminator]]
	The '''1142-A ~~Frequency Meter and Discriminator~~''' , [[introduced in 1961]] Catalog Q and available to Catalog T 1968.		The '''General Radio 1142-A''' is an analog frequency meter and discriminator [[introduced in 1961]] Catalog Q and available to Catalog T 1968.