What is the procedure for powering up an XNX unit with a Searchline Excel sensor?
First, ensure proper wiring according to the manual and control equipment guide. After applying power to the XNX transmitter, it forces the detector output to 2mA (default/inhibit) during startup routines displayed on initialization screens. Complete the setup by performing a soft reset from the Calibration Menu.
From the official Honeywell Xnx manual, page 40
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