GB1310987A - Signal chanel fault indicating systems - Google Patents

Signal chanel fault indicating systems

Info

Publication number
GB1310987A
GB1310987A GB4480570A GB4480570A GB1310987A GB 1310987 A GB1310987 A GB 1310987A GB 4480570 A GB4480570 A GB 4480570A GB 4480570 A GB4480570 A GB 4480570A GB 1310987 A GB1310987 A GB 1310987A
Authority
GB
United Kingdom
Prior art keywords
station
signal
signal transmission
chanel
frequency
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
GB4480570A
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB1310987A publication Critical patent/GB1310987A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/16—Monitoring arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/544—Setting up communications; Call and signalling arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5429—Applications for powerline communications
    • H04B2203/5458—Monitor sensor; Alarm systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5462—Systems for power line communications
    • H04B2203/5491—Systems for power line communications using filtering and bypassing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5462—Systems for power line communications
    • H04B2203/5495—Systems for power line communications having measurements and testing channel

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Radio Relay Systems (AREA)

Abstract

1310987 Communication systems SIEMENS AG 21 Sept 1970 [29 Sept 1969] 44805/70 Heading H4R In a carrier frequency communication system in which a pilot signal is transmitted over a high voltage supply system and is switched between two frequencies to effect data signal transmission, a breakdown of communication from a station A Fig. 1 is detected at station B and causes the pilot signal transmitted from B, over the return path, to be shifted to a third frequency, intermediate its two normal signalling frequencies, interrupting signal transmission in the return direction, from B to A, and indicating a fault condition. The reception of the third frequency at station A causes the blocking of signal transmission from A to B.
GB4480570A 1969-09-29 1970-09-21 Signal chanel fault indicating systems Expired GB1310987A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691949134 DE1949134B2 (en) 1969-09-29 1969-09-29 DEVICE FOR ALARM RETURN FOR CARRIER FREQUENCY TO DIRECTIONAL TRANSMISSION SYSTEMS

Publications (1)

Publication Number Publication Date
GB1310987A true GB1310987A (en) 1973-03-21

Family

ID=5746814

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4480570A Expired GB1310987A (en) 1969-09-29 1970-09-21 Signal chanel fault indicating systems

Country Status (8)

Country Link
JP (1) JPS5113532B1 (en)
AT (1) AT306798B (en)
CH (1) CH523634A (en)
DE (1) DE1949134B2 (en)
FR (1) FR2062661A5 (en)
GB (1) GB1310987A (en)
NL (1) NL155421B (en)
SE (1) SE353995B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149238A (en) * 1983-10-29 1985-06-05 Electric Shepherd Products Lim Control apparatus for an electrical fence

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5396189U (en) * 1977-01-07 1978-08-04

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149238A (en) * 1983-10-29 1985-06-05 Electric Shepherd Products Lim Control apparatus for an electrical fence

Also Published As

Publication number Publication date
SE353995B (en) 1973-02-19
NL7014257A (en) 1971-03-31
DE1949134B2 (en) 1971-04-01
JPS5113532B1 (en) 1976-04-30
FR2062661A5 (en) 1971-06-25
AT306798B (en) 1973-04-25
NL155421B (en) 1977-12-15
CH523634A (en) 1972-05-31
DE1949134A1 (en) 1971-04-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee