RTC Battery (VBAT)

The NI sbRIO-96xx contains a lithium cell battery that maintains the real-time clock (RTC) on the sbRIO device when the sbRIO device is powered off. A slight drain on the battery occurs when power is not applied to the sbRIO device.

The CMOS BATTERY IS DEAD warning appears onscreen during the power-on self test if the battery is dead. The sbRIO-96xx will start, but the system clock will reset to the date and time of the BIOS release.

The RMC connector provides a VBAT pin to power the RTC. This allows the customer to select a battery that better aligns with their application if necessary.