ÛZIATECH
76
15. AC POWER-FAIL
The ZT 8907 provides AC power-fail detection to give the application advanced warning
of an impending power failure. The advanced warning is used by the application for
performing operations such as saving critical data and entering a dormant state.
The ZT 8907 requires a transformer-isolated AC voltage of no more than 30 V from the
same source that provides the system power. Ziatech's optional AC wall transformer
(ZT 90071) meets these requirements. The wall transformer is connected to connector
J10, as shown in the "AC Wall Transformer Installation" figure below.
AC Wall Transformer Installation
ZT8907
Warning:
Do not plug the AC adapter into J8 (the speaker output
connector). Doing so may damage the board and void the warranty.