JPS5693458A - Error rate monitor device - Google Patents

Error rate monitor device

Info

Publication number
JPS5693458A
JPS5693458A JP16917279A JP16917279A JPS5693458A JP S5693458 A JPS5693458 A JP S5693458A JP 16917279 A JP16917279 A JP 16917279A JP 16917279 A JP16917279 A JP 16917279A JP S5693458 A JPS5693458 A JP S5693458A
Authority
JP
Japan
Prior art keywords
discriminator
noise margin
output
signal
circuit
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
JP16917279A
Other languages
Japanese (ja)
Other versions
JPS5937625B2 (en
Inventor
Kazuo Ogawa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP16917279A priority Critical patent/JPS5937625B2/en
Publication of JPS5693458A publication Critical patent/JPS5693458A/en
Publication of JPS5937625B2 publication Critical patent/JPS5937625B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

PURPOSE:To make high-frequency circuit parts needless to make the circuit scale small, by adding one discriminator to the detecting circuit for phase step out to discriminate presence or absence of noise margin each time. CONSTITUTION:Discriminator 7 is added to the output of circuit C2-2 which operates absolute values of two inputs of the last stage to output the difference between these two absolute values. Signal (16) is integrated by low-pass filter 2-2, and it is discriminated whether the integral value is larger than a prescribed value or not, thereby deciding phase step out. Threshold voltage Vt is used to discriminate signal (16) directly by discriminator 7, thereby discriminating whether noise margin exists sufficiently or not. Then, pulses of output signal S3 of discriminator 7 are counted to count the degree of presence of absence of noise margin. As a result, the error rate is estimated at every certain time.
JP16917279A 1979-12-27 1979-12-27 error rate monitoring device Expired JPS5937625B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16917279A JPS5937625B2 (en) 1979-12-27 1979-12-27 error rate monitoring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16917279A JPS5937625B2 (en) 1979-12-27 1979-12-27 error rate monitoring device

Publications (2)

Publication Number Publication Date
JPS5693458A true JPS5693458A (en) 1981-07-29
JPS5937625B2 JPS5937625B2 (en) 1984-09-11

Family

ID=15881580

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16917279A Expired JPS5937625B2 (en) 1979-12-27 1979-12-27 error rate monitoring device

Country Status (1)

Country Link
JP (1) JPS5937625B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01264042A (en) * 1987-12-29 1989-10-20 Japan Radio Co Ltd Clock detection method for carrier recovery circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01264042A (en) * 1987-12-29 1989-10-20 Japan Radio Co Ltd Clock detection method for carrier recovery circuit

Also Published As

Publication number Publication date
JPS5937625B2 (en) 1984-09-11

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