When connected to the internet, the DVR+ (CM-7500) will list up to 14 days of guide data for channels associated with the TV market zip code that you entered in the setup wizard. Channels that are not associated with this zip code according to guide(data provider) will only display the guide data sent over the air by the broadcaster.
NOTE: Channel Master does not guarantee the 14 day guide. Many demographics will have 14 days on all channels, however not all demographics are guaranteed to have the full 14 days. If you only see roughly 2 days of guide information on a channel, this means that guide(data provider) does not have this information.