User's Manual

ReliaGATE 10-12 User manual Rev. 2-1 9 Interfaces in detail
9.12 RTC (Real Time Clock)
The ReliaGATE 10-12 includes the following two RTC (Real Time Clocks) devices:
RTC device Description Use
/dev/rtc0 l Internal (in the CPU SoC) Reserved
/dev/rtc1 l External (I2C-based RTC device)
l Default RTC used by Linux
l Accuracy: 25 minutes per year (at 25 °C)
User available
9.12.1 The RTC Device "/dev/rtc1"
The RTC device "/dev/rtc1" offers three timestamp registers.
For more information see: "How the RTC is exposed" on page87.
9.12.2 The RTC backup battery
The ReliaGATE 10-12 includes a BR1225 lithium coin cell RTC battery in the Service Panel.
9.12.2.1 How to replace / install the battery
WARNING
SERIOUS HARM IF BATTERY IS USED INCORRECTLY
Before using the battery always refer to battery manufacturer's instructions for safety.
CAUTION
RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE
Use and replace only with correct size and type.
Dispose of used batteries according to battery manufacturer's instructions.
To replace/install a battery, complete the following steps:
1. Disconnect the power cable from the product
2. Remove the old battery: use a pair of plastic tweezers to pull out the battery. Dispose of old battery
properly
3. Insert a new battery with the minus “-” pole facing the circuit board.
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