double \"crossed\" failure

English translation: See explanation below...

20:00 Jun 4, 2017
English language (monolingual) [PRO]
Tech/Engineering - Telecom(munications)
English term or phrase: double \"crossed\" failure
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".
tadeusz50
Local time: 19:03
Selected answer:See explanation below...
Explanation:
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.
Selected response from:

Tony M
France
Local time: 19:03
Grading comment
Thanks Tony:) your explanation is very comprehensive.
4 KudoZ points were awarded for this answer



SUMMARY OF ALL EXPLANATIONS PROVIDED
4 +1See explanation below...
Tony M
Summary of reference entries provided
Context
philgoddard

  

Answers


36 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +1
double "crossed" failure
See explanation below...


Explanation:
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'.

--------------------------------------------------
Note added at 1 heure (2017-06-04 21:27:03 GMT)
--------------------------------------------------

Obviously, in that last scenario, a slightly more complicated switch-over mechanism is needed, which is what is being described in your document.

Tony M
France
Local time: 19:03
Specializes in field
Native speaker of: Native in EnglishEnglish
PRO pts in category: 24
Grading comment
Thanks Tony:) your explanation is very comprehensive.

Peer comments on this answer (and responses from the answerer)
agree  Yasutomo Kanazawa
8 hrs
  -> Thanks, Yasutomo-san!
Login to enter a peer comment (or grade)




Reference comments


24 mins peer agreement (net): +2
Reference: Context

Reference information:
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."


    Reference: http://www.google.com/patents/EP1675272B1?cl=en
philgoddard
United States
Native speaker of: English
PRO pts in category: 4

Peer comments on this reference comment (and responses from the reference poster)
agree  acetran
6 hrs
agree  Tony M
1 day 9 hrs
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