Bird Technologies ACMI - Manual (Page 29)

17
Data Log
The BPME maintains a 365 day log (data log) of forward and reflected power
readings and alarm conditions (low power, high power, and VSWR alarm). For
each new day, the BPME will automatically take a power reading every minute
and average it with the previous minute. This averaged value is temporarily
stored every hour and then a new average is started. If an alarm occurred over
the course of an hour, then a value of '1' is logged for the specific condition that
triggered the alarm: low power, high power, and/or VSWR. At the end of a 24
hour period, the hourly power reading data is averaged and the percentage of
time that a specific alarm was on is written to non-volatile storage. Each individ-
ual hour’s data (both powers and alarms) is also written to non-volatile storage
at the end of the day. If the power is lost, you will loose only historical data
obtained for the current day after the log started and before the power went
out. All other data will remain intact.
Figure 8 Data Log
Day Selection
The steps to create and display information from the data log are: select the
days to view, choose to include or exclude alarm data, select chart type, chart
the data.
1.
Select Days
a. Decide which days to view.
Note:
Day 0 is today, day 1 is yesterday, and so on up to day 364.
b. Enter the day number of the log you wish to view in the Begin field
under Day Selection.
c. Click the Add >> button to add it to the list of days to view.

To add a range of days,
a. Enter the start day in Begin.
b. Enter the number of days in the No. Days field.
c. Click the Add >> button.
Note:
The day numbers can be added in any order and any range.