1142-A: Difference between revisions

Revision as of 11:17, 22 February 2024

The 1142-A 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.

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-Type '''1142 Frequency Meter and Descriminator'''.
+[[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.
 ==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.
+==Manuals==
+* [[Media:GR 1142A Frequency Meter & Discriminator.pdf|General Radio 1142-A Frequency Meter and Discriminator 1142-100-E (1969)]]
 ==Links==
+* [[Media:GRwiki Exp 1142-A 1961-2.pdf|Experimenter describing 1142-A February 1961]]
 ==Photos==
 <gallery>
+GR 1142-A Front.jpg
+GR 1142-A Inside Bottom.jpg
+GR 1142-A Inside Top.jpg
+GR 1142-A Inside Bottom Right.jpg
+GR 1142-A Inside Bottom Right Close-up.jpg
+GR 1142-A Inside Bottom Right Close-up B.jpg
+GR 1142-A Inside Bottom Left Close-up.jpg
+GR 1142-A Right Side Close-Up.jpg
+GR 1142-A Left Side.jpg
+GR 1142-A Rear.jpg
+GR 1142-A Right Side.jpg
 </gallery>
 [[Category:Frequency Standards and Meters]]