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Method and apparatus for determining proper installation of alarm devices

  • US 6,034,601 A
  • Filed: 02/24/1998
  • Issued: 03/07/2000
  • Est. Priority Date: 02/24/1998
  • Status: Expired due to Term
First Claim
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1. An apparatus for determining improper installation of a plurality of addressable devices coupled to a line in an alarm system, comprising:

  • a poll transmission circuit coupled to the line, the poll transmission circuit polling individual addresses of the addressable devices;

    a receiving circuit coupled to the line, the receiving circuit detecting a response on the line from at least one addressable device responding to a poll message generated by the poll transmission circuit;

    the receiving circuit having a normal sensitivity used for sensing normal non-test communications with devices on the line and a reduced sensitivity that is lowered in relation to the normal sensitivity to detect devices improperly installed on the line, based upon a comparison of the response and the reduced sensitivity, while in a device testing mode.

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