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EFIS-D100 Installation Guide - Dynon Avionics

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Appendix<br />

CALIBRATION AND ADJUSTMENT<br />

Before adjustment, it is possible for the OAT sensor to read as much as 5 degrees Celsius off the<br />

actual value. Therefore, it may be necessary to adjust the displayed air temperature value to<br />

compensate for this. To make this adjustment, you must enter the menu system and press the<br />

following sequence of buttons: MORE > SETUP > MORE > OAT. This will display the OAT<br />

adjustment menu. Press INC or DEC to increase or decrease the currently displayed OAT value.<br />

It is important to make this adjustment when the air surrounding the OAT probe is at a known<br />

temperature. This can be achieved with a standard thermometer. Adjust the displayed OAT until<br />

it agrees with your independent temperature reference.<br />

TROUBLESHOOTING<br />

OAT value fluctuates wildly<br />

If the OAT probe is improperly wired, the <strong>EFIS</strong>-<strong>D100</strong> will not receive a valid signal from it.<br />

Verify that the three wires coming from the OAT probe are wired exactly as described in the<br />

Wiring Instructions section above.<br />

OAT value is consistently high/low<br />

You need to adjust the displayed OAT value to correct for sensor inaccuracies. Follow the<br />

instructions in the Calibration and Adjustment section above.<br />

OAT display area states OAT NOT FOUND<br />

Ensure that you have selected the number corresponding to your OAT in the OAT INSTALLED<br />

menu as described above. It can sometimes take as long as 5 seconds for the <strong>EFIS</strong>-<strong>D100</strong> to lock<br />

onto the OAT reading. Ensure that all wiring is correct and that there are no shorted or open<br />

connections.<br />

Other strange behavior by OAT reading<br />

It is possible that your <strong>EFIS</strong>-<strong>D100</strong> and EDC-D10A have mismatched versions of firmware on<br />

them. This most commonly happens when one takes the <strong>EFIS</strong>-<strong>D100</strong> out of the aircraft to connect<br />

to a computer for firmware upgrade. Ensure that the <strong>EFIS</strong>-<strong>D100</strong> and EDC-D10A are connected<br />

to each other and communicating before attempting a firmware upgrade.<br />

<strong>EFIS</strong>-<strong>D100</strong> <strong>Installation</strong> <strong>Guide</strong> 7-9

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