J.P. Instruments EDM 900 Pilots Guide - Manual (Page 37)

For Your Safe Flight Page 37
Section 8 - Memory and Data Download
The EDM compresses and records all displayed parameters once every
six seconds (default) in Long Term Data Memory (note: you can
change this rate to be 1 to 500 seconds). This data is retrievable by
inserting a USB Drive into the jack on the front of the instrument and
following the prompts. You can choose to retrieve ‘ALL’ the data stored in
the EDM, or only the ‘NEW’ data recorded since your last retrieval. In
either case, the selected data in the EDM is not erased. The data can
later be viewed on EZTrends, a PC program available from JPI or over
the internet.
RPM is greater than 500. The amount of data that the EDM can store will
vary depending on how rapidly parameters change. The typical storage
capacity is greater than 300 hours at a 6 second recording interval, but
can vary depending on configuration. When the memory becomes full,
the oldest data will be discarded to make room for the newest. All data
are time-stamped. The EDM contains a real-time clock that may be set
when you initially program your instrument. You may change the
recording interval from 1 to 500 seconds, even in flight (when you change
the interval in flight, the current flight file is closed and a new flight file is
started at the new interval).
Downloading Data from the EDM
Downloading is a simple process. Follow the steps below:
a. With the EDM powered up, plug the USB flash drive adaptor and
flash drive into the EDM USB port.
b. Wait for the EDM display to show DOWNLOAD: NEW.
c. To download only the new data since the last download, tap the
STEP button.
d. To download all data in the EDM, tap the CHANGE button to see
DOWNLOAD: ALL, then tap STEP.
e. You will see a ‘progress indicator’ as the data is copied to the
USB flash drive. DO NOT INTERRUPT THIS PROCESS. When
the download is complete the display on the EDM will show
DONE and then return to normal operation.
f. Wait until the process is complete then remove the USB flash
drive from the USB connector.