In Rev 7 of the PTS pg53 5 : Power
Required Shutdown Sequence Warning: To avoid causing issues with the file system, follow this shutdown sequence. 1. Drive Full_Card_Power_Off# low. 2. Wait for at least t_pwr_off_seq seconds. 3. Remove power.
t_pwr_off_seq 21.5 25 Seconds
Is this a “must” requirement or a “optional” requirement ?
If it’s a must I guess this means we need a local power source (e.g. battery or supercap) to provide a UPS function for the radio - am I correct?
Thanks in advance