Yes, it's part of what's called the MICOM - no idea what it means.So there's a separate clock in the front panel that can get out of sync even though there's a reliable time signal in the DVB-T signals?
The front panel contains a dedicated processor that wakes the main box up when necessary. When you put the Humax into standby, it sets the micom clock and the next wake-up-timer before powering off.