Copyright © 2015 Grand Rapids Technologies, Inc.
Electronic Flight Instrumentation for Experimental Aircraft Since 1991
Data recording goes along with last week’s feature. In addition to saving display unit settings on your USB thumb drive, you can record flight data for later analysis and even for playback on your display unit. (On the ground, of course.) See the bottom of this page for information on how to use the free online engine analysis provided by SavvyAnalysis.com (partial screenshot shown here).
What data can I record?
There are two basic types of files that you can record off the EFIS.
How to Take a Snapshot (HX/HXr/SX)
How to Record Flight Information
Demo recordings can be recorded on a one-
Go to SET MENU > General Setup. Highlight DEMO Settings (right above the SNAP settings) and press the right knob to activate the menu. Here you’ll find several choices.
To imprint date and time in the upper left corner of the recording: Choose YES next to “Use Date/Time in Filename.”
Specify the maximum file size of the recordings (MB): Choose from 1 to 15 MB under “Max File Size.” You can specify how big you want the files to be for easier handling or emailing. A typical recording is less than 1 MB per minute. Yours may be more or less depending on how much data is being recorded. Upon reaching the max file size, the display unit will stop recording momentarily to write the data to the USB stick. SO, the bigger the file, the more continuous data you will get. The smaller the file, the more often it will save the data.
Specify maximum recording time in minutes: Choose from 1 to 120 minutes under “Max File Time.”
Start and save recordings automatically: Under the Automatic Start/Stop heading, choose to record nothing automatically (OFF), start automatically, stop automatically, or start and stop automatically. When automatic data recording is enabled, the EFIS will start and stop/save automatically when the Auto Start and Auto Stop menu settings are reached, whether it’s a specified RPM, Airspeed, Ground Speed, or N1 for turbines. Do not turn off the EFIS before or immediately after these limits are reached; it will take the display unit a few seconds to write the data from the last file recorded to the USB stick.
Start and save recordings manually: In flight or on the ground, press NEXT repeatedly or MORE (HXr) until you see the DEMO softkey. START starts recording the demo. STOP ends and saves the demo. When manually recording, do not forget to STOP the demo, as this is the action that saves the flight from temporary internal memory to the USB stick.
What can I do with the recordings?
Snapshots are nice for times when you want to record things like really high ground speed or unusual performance, unusual terrain views on the synthetic vision, or neat weather picked up by ADS-
You can play back the demo file recordings directly on your EFIS to debrief a flight or review flight testing performance information. From the PFD screen, press NEXT or MORE until you see the DEMO softkey. Press it to PLAY the demo. If multiple demo files are on the USB stick, you will be taken to a menu page where you can select the file to play. Keep in mind that data on the USB stick can be recovered and analyzed by NTSB authorities after a wreck, similar to a “black box.” Because demo files record all the data from the AHRS, magnetometer, and other sensors during flight, they are useful for our techs to help customers solve problems.
EIS engine monitor data can be used in a couple of ways. You can download the EIS LOG program to open the raw demo files and read the EIS data in textual columns. You can also upload the raw demo files to SavvyAnalysis.com for a very easy and quick way to graphically analyze your engine performance data. This is a free service– you just need to set up your log-
If you have some unique or interesting demo files or snap shots you would like to share for our website, we want to see them! Please send them to us. (5 MB limit!)
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