GB792022A - Improvements in or relating to wave meters - Google Patents

Improvements in or relating to wave meters

Info

Publication number
GB792022A
GB792022A GB3664255A GB3664255A GB792022A GB 792022 A GB792022 A GB 792022A GB 3664255 A GB3664255 A GB 3664255A GB 3664255 A GB3664255 A GB 3664255A GB 792022 A GB792022 A GB 792022A
Authority
GB
United Kingdom
Prior art keywords
switch
oscillator
frequency
ganged
adjusted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3664255A
Inventor
Douglas Ray Willis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marconi Instruments Ltd
Original Assignee
Marconi Instruments Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Marconi Instruments Ltd filed Critical Marconi Instruments Ltd
Priority to GB3664255A priority Critical patent/GB792022A/en
Publication of GB792022A publication Critical patent/GB792022A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)

Abstract

792,022. Wave meters. MARCONI INSTRUMENTS, Ltd. Aug. 16, 1956 [Dec. 21, 1955], No. 36642/55. Class 37. A heterodyne wave meter consists of two ganged variable oscillators 1 and 2 with means independent of the ganged control for varying oscillator 1 over a small range, a calibrating source 16 and 17 for producing a series of standard frequencies, a mixer 11 and means for detecting the presence of and counting heterodyne beats. To measure the frequency of the signal received at 19, switch 10 is placed to 20 and switch 8 connects up oscillator 2 and dial 4 is adjusted for zero beat in the headphones. Switch 10 is then placed to 18 to connect up the calibrating source in place of 19 and 4 is again adjusted to the nearest frequency below to again produce zero beat. Finally, oscillator 1 is made to replace oscillator 2 with 19 connected up, control 6 is adjusted to produce zero beat. Switch 10 is then placed to 9, switch 7 is opened and switch 8 is closed and the resultant beat between the oscillations from 1 and 2 is counted by 14 and indicated by 15. This indication added to the frequency to which oscillator 2 was set when in comparison with 16 is an indication of the frequency. An absorption wave meter 21 may also be ganged to I and 2 in order to give a rough indication and hence remove ambiguity. The calibrating source may comprise a crystal-controlled oscillator 16 and a decade divider 17.
GB3664255A 1955-12-21 1955-12-21 Improvements in or relating to wave meters Expired GB792022A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3664255A GB792022A (en) 1955-12-21 1955-12-21 Improvements in or relating to wave meters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3664255A GB792022A (en) 1955-12-21 1955-12-21 Improvements in or relating to wave meters

Publications (1)

Publication Number Publication Date
GB792022A true GB792022A (en) 1958-03-19

Family

ID=10389955

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3664255A Expired GB792022A (en) 1955-12-21 1955-12-21 Improvements in or relating to wave meters

Country Status (1)

Country Link
GB (1) GB792022A (en)

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