Meinberg TCR509 - Manual (Page 11)

11
Updating the Firmware
Whenever it is necessarry to upgrade the on-board software, the new firmware can be
downloaded using the serial port COM0.
If the /BOOT input, which is available on the 64 Pin VG-Connector, is pulled low
during a power up reset, an internal bootstrap-loader is activated and waits for instruc-
tions from the serial port COM0. A loader program will be shipped together with the file
containing the image of the new firmware. The current fimware is retained in the flash
memory until the download program sends a command to erase the flash. So if the boot
sequence was initiated erroneously, the program memory is not deleted accidently. The
system is ready to go after the next power up.
Replacing the Lithium-Battery
The life time of the lithium battery on the board is at least 10 years. If the need arises to
replace the battery, the following should be noted:
ATTENTION!
Danger of explosion in case of inadequate replacement
of the lithium battery. Only identical batteries or batte-
ries recommended by the manufacturer must be used for
replacement. The waste battery must be disposed as pro-
posed by the manufacturer of the battery.