EKF SC9-TOCCATA, Руководство пользователя

Страница: 44 / 77

SC9-TOCCATA • CompactPCI® Serial CPU Board • 11th Generation Intel® Processors
Real-Time Clock (RTC)
The SC9-TOCCATA has a time-of-day clock and 100-year calendar, integrated into the PCH. A
battery on the board keeps the clock current when the computer is turned off. The SC9-TOCCATA
uses a holder to keep a CR2032 lithium coin cell, giving an autonomy of more than 5 years. Under
normal conditions, replacement should be superfluous during lifetime of the board.
Alternately a CR2032 battery can be soldered to the board when board coating or
shock/vibration is an interest.
In applications were the use of a battery is not permitted, a SuperCap can be soldered instead of
the battery.
It is also possible to use the SC9-TOCCATA without any battery or SuperCap. In this case the Real-
Time Clock can’t keep its time and date. Per default an error message is reported by the UEFI/BIOS
during boot in all cases, where the Real-Time clock settings are bad:
00C08270: Real Time Clock Error - Check Date and Time settings
00C08251: System CMOS Checksum bad
To suppress these messages a setup node exists within the UEFI/BIOS:
<
After Power-On press function key <F2> to enter setup menu
<
Advanced
6
Advanced Menu
6
Miscellaneous Options
6
Ignore Battery Error
6
Enabled
<
Advanced
6
Advanced Menu
6
Management Engine Configuration
6
ME Unconfig on RTC Clear
6
Disabled
Replacement of the Battery
Some versions of SC9-TOCCATA are delivered with a battery holder for replacement of the coin
cell. Use a CR2032 cell as replacement. Be careful when removing the old cell and inserting the
new one. For boards with a soldered battery the old battery must be desoldered, and the new one
soldered. We suggest that you send back the board to EKF for battery replacement.
Warning
Danger of explosion if the battery is incorrectly replaced or shorted. Replace only with
the same or equivalent type. Do not expose a battery to fire. Battery cells could
explode and cause personal injury!
© EKF -44- ekf.com