Operating instructions

38 1892 1335 - Orion Radio Modem Operating Instructions - v2.9 / Aug 2009
Memory
Parameters are stored in two different memory allocations, FLASH and EEPROM. When
parameters are written to the unit using the GUI (not simply edited on-screen), both FLASH
and EEPROM locations will be updated. When updating parameters using any AT-command,
only the EEPROM is updated. If the parameters are not saved using the AT-save command
(AT&W), the EEPROM parameters will be overwritten if the Orion is powered off and on again.
When the Orion is powered up, both EEPROM and FLASH memory parameters are checked
against a written check sum, and if one of the blocks is corrupt, it will be overwritten by the
correct one. If both are corrupt, an error message will be created, and the Orion will not start,
indicated by a slow flashing of the yellow status LED and the green LED steadily on.