BE788949A - Procede d'essai de modulateur-demodulateur - Google Patents

Procede d'essai de modulateur-demodulateur

Info

Publication number
BE788949A
BE788949A BE788949DA BE788949A BE 788949 A BE788949 A BE 788949A BE 788949D A BE788949D A BE 788949DA BE 788949 A BE788949 A BE 788949A
Authority
BE
Belgium
Prior art keywords
modulator
test process
demodulator
demodulator test
test
Prior art date
Application number
Other languages
English (en)
Inventor
R A Liberman
W Ch Bond
E J Soltysiak
Original Assignee
Gen Datacomm Ind Inc
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.)
Publication date
Publication of BE788949A publication Critical patent/BE788949A/fr

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
    • H04L1/242—Testing correct operation by comparing a transmitted test signal with a locally generated replica
    • H04L1/243—Testing correct operation by comparing a transmitted test signal with a locally generated replica at the transmitter, using a loop-back
    • 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)
  • Maintenance And Management Of Digital Transmission (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Communication Control (AREA)
  • Mechanical Operated Clutches (AREA)
  • Telephonic Communication Services (AREA)
BE788949D 1971-11-01 Procede d'essai de modulateur-demodulateur BE788949A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19427071A 1971-11-01 1971-11-01

Publications (1)

Publication Number Publication Date
BE788949A true BE788949A (fr) 1973-03-19

Family

ID=22716941

Family Applications (1)

Application Number Title Priority Date Filing Date
BE788949D BE788949A (fr) 1971-11-01 Procede d'essai de modulateur-demodulateur

Country Status (8)

Country Link
US (1) US3769454A (fr)
JP (1) JPS5644621B2 (fr)
BE (1) BE788949A (fr)
CA (1) CA964593A (fr)
DE (1) DE2248234C2 (fr)
FR (1) FR2159877A1 (fr)
GB (2) GB1401669A (fr)
IT (1) IT975316B (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952163A (en) * 1972-04-24 1976-04-20 General Datacomm Industries, Inc. Method and apparatus for testing in FDM system
US4039751A (en) * 1972-04-24 1977-08-02 General Datacomm Industries, Inc. Method and apparatus for closed loop testing of first and second modulators and demodulators
US3937882A (en) * 1974-04-11 1976-02-10 Vadic Corporation Full-duplex communication system on a two wire line
US3908086A (en) * 1974-06-03 1975-09-23 Redactron Corp Method for establishing a data communication connection between two full duplex modems
DE2522725C3 (de) * 1975-05-22 1979-02-22 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren zur Fehlererkennung in einem Fahrzeugortungssystem
GB1540900A (en) * 1975-06-30 1979-02-21 Ericsson L M Pty Ltd Digital testing and power control in a digital communication system
US4095045A (en) * 1977-01-19 1978-06-13 General Datacomm Industries, Inc. Method and apparatus for signaling in a communication system
US4383312A (en) * 1980-11-28 1983-05-10 The United States Of America As Represented By The Secretary Of The Navy Multiplex system tester
US4471489A (en) * 1981-03-19 1984-09-11 General Datacomm Industries, Inc. Automatic answer/originate mode selection in modem
KR100467587B1 (ko) * 2002-06-07 2005-01-24 삼성전자주식회사 팩시 밀리의 자기 진단 방법 및 이 방법을 수행하는팩시밀리

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3571530A (en) * 1965-05-27 1971-03-16 Bell Telephone Labor Inc System for remote testing of telephone subscribers{3 {0 lines
US3622877A (en) * 1969-11-07 1971-11-23 Sanders Associates Inc Apparatus for testing modulator demodulator units for transmission errors and indicating the errors per power of 10
US3655915A (en) * 1970-05-07 1972-04-11 Gen Datacomm Ind Inc Closed loop test method and apparatus for duplex data transmission modem

Also Published As

Publication number Publication date
US3769454A (en) 1973-10-30
DE2248234C2 (de) 1982-12-16
JPS5644621B2 (fr) 1981-10-21
IT975316B (it) 1974-07-20
DE2248234A1 (de) 1973-05-10
JPS4853613A (fr) 1973-07-27
CA964593A (en) 1975-03-18
FR2159877A1 (fr) 1973-06-22
GB1401670A (en) 1975-07-16
GB1401669A (en) 1975-07-16

Similar Documents

Publication Publication Date Title
BE793163A (fr) Procede de sechage d'ethers
BR7200782D0 (pt) Aparelho de mecanoterapia
BE787662A (fr) Procede de preparation d'un complexe fer-saccharide
BE778205A (fr) Procede de liaison
CH555316A (fr) Procede de preparation d'aminocycloalcenylo-cyclohexenols.
BE786840A (fr) Procede de preparation de 1,2,4-triazine -5-ones
BE786518A (fr) Procede de preparation d'oxa-bicyclo-alcenes
BE788949A (fr) Procede d'essai de modulateur-demodulateur
BE784130A (fr) Procede d'hydrogenation
BE778878A (fr) Procede de transmission d'information
BE786156A (fr) Procede de preparation de l'anhydride
BE782636A (fr) Procede d'essai
BE786986A (fr) Procede de preparation du 2-chloro-butadiene-1,3
BE786329A (fr) Procede de preparation de polyurethannes
BE788171A (fr) Procede de preparation d'alcoyl-tetralines
BE787410A (fr) Procede de preparation du 1,1-difluorethane
BE783074A (fr) Procede de fluoration de composes perchlores
BE787990A (fr) Procede de preparation de peroxydiesters
BE789467A (fr) Procede de preparation d'halogenures de monohaloacetyles
FR2319280A5 (fr) Procede de preparation de caoutchoucs divinyle-styrene
BE782829A (fr) Procede de preparation du dichloracetoxypropane
BE792486R (fr) Procede de preparation
BE786177R (fr) Procede de preparation
BE767309A (fr) Procede de preparation des flavone-7-oxyacetates d'alcoyle inferieur
BE789466A (fr) Procede de preparation d'halogenures de monohaloacetyles