| 摘要 |
PROBLEM TO BE SOLVED: To provide an automatic fire alarm system capable of easily performing an adjustment for matching with a resistance value of a termination resistor of an existing display line at a renewal site of an automatic fire alarm system through a fire receiver. ! SOLUTION: The automatic fire alarm system includes: an operation section 11 for inputting and setting a resistance value of a termination resistor TR connected to a display line L; a threshold selection section 12 that selects a disconnection threshold value based on the set resistance value; and a control monitoring section 13 that monitors the voltage level on the display line L, and when the voltage level of the display line L exceeds the selected disconnection threshold value, notifies a disconnection failure. ! COPYRIGHT: (C)2015,JPO&INPIT |
