Page 4-3 Installation Checkout TQG191-IM
Rev 0: 28 Feb 2019
4.2.3 Display Indications
The State, Status and Failure Conditions of the KTX2 are indicated on the display by icons
illustrated in Table 4-2 displayed in the positions described in Figure 4-1. Extended Squitter and
ADS-B OUT functions are described in Table 4-3. Detailed troubleshooting is covered in Table
5-1.
Transponder is transmitting
Mode-A/C
Replies on
Interrogations
Transponder is transmitting
Mode-S
Replies on
Interrogations
Transponder is locked by a
ground station and will be
directly addressed
Appears at every addressed reply
Status of Extended Squitter
transmission
Battery power too low (< 11 VDC)
Bad L-Band antenna, or antenna
connection
ID („Squawk Ident“) has been pressed
– active for 18s
Flight Level (in 100ft steps)
Mode display
(STBY, ON, GND, ALT)
See 4.3.2 Transponder- Modes
Can be changed with active Squawk
by pushing the UP/DOWN (toggle)
button
Table 4-2: Indications