Product Info

TQ Aviation KTX2.0300
EASA.AP445 MAN
KTX2.A-MAN.0202.en._FCC geändert.docx Page 40 of 49
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5. Installation
5.1. Equipment Connections
5.1.1. Electrical Connections
The 15pin D-SUB connector at the rear side of the unit includes all electrical connec-
tions, except for the antenna.
The plus cable must be protected with a 3A slow blow fuse!
5.1.2. Mutual Suppression
Other equipment
on board (e.g. DME) may transmit in the same frequency band as
the transponder.
If such a device is installed a single wire bus (Suppression = active at
+12V) shall be installed in order to protect the receiving parts of the different devices from
in-band transmissions.
Mutual suppression is a pulse that is sent to the other equipment to suppress transmis-
sion of a competing transmitter for the duration of the pulse train transmission. The tran-
sponder transmission may be suppressed by an external source and vice versa.
To activate mutual suppression the SUPP_I/O requires a +12V source from the other
equipment.
Note:
All equipment connected to the suppression line must be re-inspected and reapproved
before operation from a qualified avionic technician. Use shielded line.
5.1.3. Ground Switch
If a Ground-Switch is connected (and activated in the Setup), the transponder is enabled
to distinguish between weight-on-wheel (On the Ground) and (In-Flight) conditions. In the
weight-on-wheel condition the transponder automatically enters the Standby mode.
In order to complete this installation the input “FLY-GND“ must be connected to a switch,
which connects the input with “GND“ in case there is weight on wheels, or remains open
during flight.
This option must additionally be activated in the Setup. For details on configuration
please refer to chapter 3.1.4.2.
5.1.4. Static Air Port