5,838
edits
FAQ: Difference between revisions
m
→Cumulus takes a long time to download the data from my Davis station at start up: Sorry, used American spelling of 'Synchronise' with Z on previous edit (Forum editor marks British spelling as error)
mNo edit summary |
m (→Cumulus takes a long time to download the data from my Davis station at start up: Sorry, used American spelling of 'Synchronise' with Z on previous edit (Forum editor marks British spelling as error)) |
||
| Line 572: | Line 572: | ||
When Cumulus starts, it asks the station for all the data from the logger since the last time it was running. If the time-stamp that it supplies does not exactly match the time-stamp of an entry in the Davis logger, the station has a strange 'feature' where it decides to send the entire contents of the logger. This will take some time to download, during which the Davis console display may appear to freeze. | When Cumulus starts, it asks the station for all the data from the logger since the last time it was running. If the time-stamp that it supplies does not exactly match the time-stamp of an entry in the Davis logger, the station has a strange 'feature' where it decides to send the entire contents of the logger. This will take some time to download, during which the Davis console display may appear to freeze. | ||
#It is recommended that you enable the feature ''' | #It is recommended that you enable the feature '''Synchronise station clock''' in the 'Settings' block accessed from the ''Configuration'' menu '''Station''' [[Cumulus_Screenshots#Station|Screen]]. | ||
#It is recommended that you set the logging interval in Cumulus (in the 'Data log interval' block accessed from the ''Configuration'' menu '''Station''' Screen) to the same interval as the station (the station interval can be changed using Weatherlink), then Cumulus will be able to make sure it uses a time-stamp that matches an entry in the logger. Note that this is mentioned in the '''readme.txt''' file that appears during the Cumulus installation, which you were asked to read at the time. If you didn't read it, it is strongly recommended that you do so now; it contains important information. | #It is recommended that you set the logging interval in Cumulus (in the 'Data log interval' block accessed from the ''Configuration'' menu '''Station''' Screen) to the same interval as the station (the station interval can be changed using Weatherlink), then Cumulus will be able to make sure it uses a time-stamp that matches an entry in the logger. Note that this is mentioned in the '''readme.txt''' file that appears during the Cumulus installation, which you were asked to read at the time. If you didn't read it, it is strongly recommended that you do so now; it contains important information. | ||
== My Davis console clock is not exactly the same as my PC clock, but I have "Synchronise station clock" selected == | |||
The Davis protocol only allows hours and minutes to be set, so there is always likely to be a difference of up to 60 seconds between the PC and the station. | |||
== Today is the shortest/longest day, but Cumulus says that tomorrow will be a few seconds shorter/longer == | == Today is the shortest/longest day, but Cumulus says that tomorrow will be a few seconds shorter/longer == | ||