JPS6435386A - Spectrum analyzer - Google Patents

Spectrum analyzer

Info

Publication number
JPS6435386A
JPS6435386A JP19215987A JP19215987A JPS6435386A JP S6435386 A JPS6435386 A JP S6435386A JP 19215987 A JP19215987 A JP 19215987A JP 19215987 A JP19215987 A JP 19215987A JP S6435386 A JPS6435386 A JP S6435386A
Authority
JP
Japan
Prior art keywords
frequency
vco
voltage
controlled oscillator
accuracy
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.)
Granted
Application number
JP19215987A
Other languages
Japanese (ja)
Other versions
JPH0619392B2 (en
Inventor
Hiroyuki Matsuura
Satoshi Maruta
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Electric Corp
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 Yokogawa Electric Corp filed Critical Yokogawa Electric Corp
Priority to JP62192159A priority Critical patent/JPH0619392B2/en
Publication of JPS6435386A publication Critical patent/JPS6435386A/en
Publication of JPH0619392B2 publication Critical patent/JPH0619392B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

PURPOSE:To increase the frequency accuracy of a voltage-controlled oscillator and to improve the accuracy of a spectrum analyzer by counting the oscillation frequency of the voltage-controlled oscillator and feeding it back so as to make an adjustment to a preset sweep frequency. CONSTITUTION:An input signal fi is connected to an AD converter 22 through a low-pass filter 1, a mixer 2, a BPF amplifier 4, a BPF, and detection systems 5-9 and the output of the converter is applied to the longitudinal axis of a CRT 10 through a processor 16 and a CRT interface 23. The VCO (voltage- controlled oscillator) 3 is connected to the mixer 2 and a frequency fv which varies with a signal based on the outputs of a DA oscillator 24 and a feedback circuit 21 is applied. A counter 18 counts the frequency fv and a comparator 19 compares it with the preset frequency; and the frequency is fed back to the input of the VCO 3 through a feedback circuit 21 to increase the oscillation frequency accuracy of the VCO 3.
JP62192159A 1987-07-31 1987-07-31 Spectrum analyzer Expired - Lifetime JPH0619392B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62192159A JPH0619392B2 (en) 1987-07-31 1987-07-31 Spectrum analyzer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62192159A JPH0619392B2 (en) 1987-07-31 1987-07-31 Spectrum analyzer

Publications (2)

Publication Number Publication Date
JPS6435386A true JPS6435386A (en) 1989-02-06
JPH0619392B2 JPH0619392B2 (en) 1994-03-16

Family

ID=16286674

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62192159A Expired - Lifetime JPH0619392B2 (en) 1987-07-31 1987-07-31 Spectrum analyzer

Country Status (1)

Country Link
JP (1) JPH0619392B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9353825B2 (en) 2013-07-18 2016-05-31 Denso Corporation Vibration absorbing apparatus
CN113341225A (en) * 2021-08-06 2021-09-03 北京嘉普之光科技有限公司 Panoramic frequency high-speed scanning method and device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52135040U (en) * 1976-04-08 1977-10-14

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52135040U (en) * 1976-04-08 1977-10-14

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9353825B2 (en) 2013-07-18 2016-05-31 Denso Corporation Vibration absorbing apparatus
CN113341225A (en) * 2021-08-06 2021-09-03 北京嘉普之光科技有限公司 Panoramic frequency high-speed scanning method and device
CN113341225B (en) * 2021-08-06 2021-11-12 北京嘉普之光科技有限公司 Panoramic frequency high-speed scanning method and device

Also Published As

Publication number Publication date
JPH0619392B2 (en) 1994-03-16

Similar Documents

Publication Publication Date Title
EP0691746A4 (en)
SE8603552D0 (en) MICROWAVE NOISE MEASURING APPARATUS
US3221266A (en) Linear sweep frequency generator
US3932814A (en) Heterodyne receiver system
JPS6435386A (en) Spectrum analyzer
SU1690681A1 (en) Device for forming of pulses of respiratory movements
JPS56144640A (en) Oscillator
JPS5784625A (en) Phase synchronizing oscillator
SU1095090A1 (en) Device for measuring change rate and deviation of frequency of signal having linear frequency modulation
GB1533432A (en) Fm tuner
JPS5776930A (en) Frequency shift signal generating system using pll
JPS57178427A (en) Monitoring circuit for oscillator output
JPS573433A (en) Phase synchronizing type microwave signal generator
JPS6449426A (en) Local oscillation circuit
SU1541530A1 (en) Device for forming the sampling rate of digital phase meter
JPS6424503A (en) Frequency converting device
JPS6444863A (en) Spectrum analyzer
JPS57190413A (en) Receiver
JPS5515067A (en) Phase angle detection unit
JPS57135519A (en) Tuning circuit
JPS5788366A (en) Apparatus c/n measurement
JPS6437120A (en) Phase locked loop oscillator
JPS5530282A (en) Communication system
JPS56146337A (en) Monitor device for circuit quality
JPS56119533A (en) Pll circuit