Jun 4, 2017 20:00
7 yrs ago
1 viewer *
English term
double \"crossed\" failure
English
Tech/Engineering
Telecom(munications)
I need a specialist to explain what this term means - "Where each unit includes a transmitter and a receiver, the change-over can be effected just for transmitters or just for receivers so that, after change-over, the transmitter of one unit and the receiver of the other unit are operational. This mechanism allows one to have a system resilient even when a double "crossed" failure arises".
Responses
4 +1 | See explanation below... | Tony M |
References
Context | philgoddard |
Responses
+1
36 mins
English term (edited):
double "crossed" failure
Selected
See explanation below...
It means...
If you have Unit 1 that contains a Tx and an Rx, and a similar Unit 2, there are various permutations of failure possible:
Any one of Tx 1 or Rx1 or Tx 2 or Rx 2 might fail — a simple failure
Both Tx 1 and Rx 1 OR both Tx 2 and Rx 2 might fail — a 'double failure'
OR it could happen that Tx 1 AND Rx 2 (or conversely Tx 2 AND Rx 1) both fail at the same time — this is a 'double failure' that is also 'crossed'.
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Note added at 1 heure (2017-06-04 21:27:03 GMT)
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Obviously, in that last scenario, a slightly more complicated switch-over mechanism is needed, which is what is being described in your document.
If you have Unit 1 that contains a Tx and an Rx, and a similar Unit 2, there are various permutations of failure possible:
Any one of Tx 1 or Rx1 or Tx 2 or Rx 2 might fail — a simple failure
Both Tx 1 and Rx 1 OR both Tx 2 and Rx 2 might fail — a 'double failure'
OR it could happen that Tx 1 AND Rx 2 (or conversely Tx 2 AND Rx 1) both fail at the same time — this is a 'double failure' that is also 'crossed'.
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Note added at 1 heure (2017-06-04 21:27:03 GMT)
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Obviously, in that last scenario, a slightly more complicated switch-over mechanism is needed, which is what is being described in your document.
4 KudoZ points awarded for this answer.
Comment: "Thanks Tony:) your explanation is very comprehensive."
Reference comments
24 mins
Reference:
Context
The asker's text is from paragraph 0009, and "change-over" is defined in paragraph 0004.
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Note added at 25 mins (2017-06-04 20:26:42 GMT)
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"This invention relates to an electronic system having duplicate electronic units and a change-over mechanism which responds to a malfunction in a unit currently in use by switching into service a backup unit. The invention arose in connection with the design of an air traffic control radio systems where even a short break of communication between an aircraft and a ground station could present a serious safety hazard."
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Note added at 25 mins (2017-06-04 20:26:42 GMT)
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"This invention relates to an electronic system having duplicate electronic units and a change-over mechanism which responds to a malfunction in a unit currently in use by switching into service a backup unit. The invention arose in connection with the design of an air traffic control radio systems where even a short break of communication between an aircraft and a ground station could present a serious safety hazard."
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