Ads-B Monitor; Warning Messages; Fault Annunciation; Low Temperature Operation - Honeywell BendixKing KT 74 Installation Manual

1.21 ADS-B Monitor

The ADS-B Monitor is only available on installations that include an ADS-B
position source. The ADS-B Monitor provides a display of the position information
that is being transmitted in ADS-B position reports. This can provide confirmation
that the correct information is being transmitted, particularly where the GPS
source is remote from the transponder.
In the event that valid position information is NOT available from the GPS, the
latitude and longitude display will be replaced by dashes; if no valid latitude and
longitude is shown then ADS-B position information is NOT being transmitted.
Loss of ADS-B position information will also result in a WARNING message being
displayed.

1.22 Warning Messages

If the transponder detects a problem, the screen will indicate WARNING and a
brief statement of the problem. Depending on the nature of the problem, your
transponder may not be replying to interrogations. The WARNING message
should clear when the event has cleared. Press ENT to clear the message at any
time; if the fault is still present the message may reappear. Refer to Section 4.5 for
lists of warning messages.

1.23 Fault Annunciation

If the transponder detects an internal failure, the screen will indicate FAULT and a
brief statement of the problem. No replies will be made to interrogations when a
fault is detected.
Some FAULT indications can be recovered by switching the transponder off and
back on again, although in all cases a FAULT code implies that there is a fault
with the transponder or the installation. Refer to Section 4.5 for list of fault
annunciation.

1.24 Low Temperature Operation

The KT 74 is certified to operate down to −13°F (−25°C). A heating element is
built into the front panel to automatically raise the temperature around the display
during cold operating conditions. The heating element will take several minutes to
raise the temperature around the display after initial power on.
© Honeywell International Inc. Do not copy without express permission of Honeywell.
INSTALLATION MANUAL
89000007
Page 1-9
15 Nov 2013