Apparently you can also restart the cable card with this command.
"C:\Program Files\Silicondust\HDHomeRun\hdhomerun_config.exe" <deviceid> set /sys/restart cablecard

Cox communications (southwest) is
877-820-8202

anyone know the command to check for drops in packet from the tuner to the media center ? I read it somewhere on the forums, just can't find it. Would be good to add it here too.
edit: found it, here is a copy;

Low level test for network packet loss - ATSC/QAM/DVB:

1) Run HDHomeRun Setup and go ...

Get Mediacenter to record TV to a network drive :D. Great for those with a big NAS like myself.

Update the following registry key :
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Service\Recording

Examples:
\\server\TV
\\192.168.x.x\recordedtv

You can also add that ...