Siemens MXL-IQ, Operation, Installation, And Maintenance Manual

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I-2
Appendix I
Testing ASD Devices
Since one of the parameters transmitted to
the detector adjusts the detection algo-
rithm (R-algorithm) to reduce false alarms,
it is necessary to defeat ASD (or at least
the R-algorithm) when smoke testing ASD
devices. The Test ASD_Devices menu
option has been supplied for this purpose.
When ASD devices are to be smoke
tested, the Test ASD_Devices option must
be enabled. This disables the application
specific detection R-algorithm so the
detector will alarm using the standard test
gas method. If the Test ASD_Devices
option is not enabled prior to smoking the
device, the tester may find it extremely
difficult to alarm the detector since the
algorithms are designed not to be fooled by
a deceptive phenomenon such as test gas.
Once the Test ASD_Devices option has
been enabled using the test menu, the tester
should wait 3 minutes before attempting to
test the ASD devices. This time may vary
slightly with the number of ALDs and ASD
detectors in a system. This will ensure that
the ASD R-algorithm has been defeated for
test purposes. The system will not reset until
the Test ASD_Devices option has been
disabled.