Installation guide

Appendix F: User Data Logs
25-2 SkyView System Installation Guide - Revision R
Recent Flight Data Log
Filename format:
DATE-TAILNUMBER-FIRMWAREVERSION-OPTIONAL33CHARACTERS-BLACK_BOX_LOG_DATA.csv
Example:
2014-08-07-N123X-11.0-CROSS_COUNTRY_LEG1-BLACK_BOX_LOG_DATA.csv
(CROSS_COUNTRY_LEG1 is user-selectable text, up to 33 characters, at time of export.)
The Recent Flight Data Log records the most recent 15 minutes of flight at a data recording rate
of 16 times per second, in the same manner as described above. Its recording rate cannot be
changed.
The Recent Flight Data Log records data whenever SkyView believes that it is in flight, which it
determines by observing IAS and/or GPS ground speed.
Alert Data Log
Filename format:
DATE-TAILNUMBER-FIRMWAREVERSION-OPTIONAL33CHARACTERS-ALERT_DATA.csv
Example:
2014-08-07-N123X-11.0-CROSS_COUNTRY_LEG1-ALERT_DATA.csv
(CROSS_COUNTRY_LEG1 is user-selectable text, up to 33 characters, at time of export.)
The Alert Data Log contains plain-text tabular data. A new record is appended each time a
SkyView alert of any kind is triggered, including audible alerts and system messages. The Alert
Data Log is useful for diagnosing alerts that automatically clear on a brief condition, for
example, oil pressure going into the red zone for a few seconds, then back into green, and
automatically clearing.
When exported, the data log is a standard CSV (comma separated value) file and can be viewed
in spreadsheet programs such as Microsoft Excel once exported from the system. The top row
of the CSV file is a header row which documents the format of the file. Each record consists of
supporting data such as time, GPS data, type of alert, the type of alert action, and the
description of the alert. The Alert Data Log is allocated 2 MB which may be sufficient to record
more than 1500 hours of operation assuming as many as 10 alerts per hour. The Alert Data Log
is not affected by the RECORD RATE setting below.
Data Logging Recording Options
Record Rate
You can choose the frequency of the data that is recorded from SkyView’s various systems for
your particular needs. SkyView can record data as frequently as 16 times per second or as
infrequently as once every 10 seconds. Recording more frequently trades off the amount of
time that the data log covers. At once every 10 seconds, SkyView’s User Data Log can store up
to about 150 hours of data. At 16 times per second, the log stores about 2 hours of data. When
the data log fills up, the oldest data is automatically discarded to make room for new data.