User Manual Part 1

Page 2-8

16 Sep 2015

23-15-29

SYSTEM DESCRIPTION AND INSTALLATION MANUAL

JetWave™ System

The KANDU bonding resistance measured from the measuring point and the surface the unit

is mounted must be less than 2.5 mΩ.

E. KRFU

A waveguide is used for the KRFU to OAE RF TX connection. The waveguide run must include a

short length of seamless flexible waveguide along the routing to accommodate tolerances. The

waveguide must have mounting points to interface to the attachment points provided.

NOTE:

A coax cable can be used in the place of the waveguide as long as the total loss number is

met.

The requirements for waveguide installation vary for each aircraft.

NOTE:

Make sure the waveguide is connected before powering the KRFU. Always connect J1 last

and disconnect J1 first (J1 contains the A/C power).

Refer to Figure 2-27, Figure 2-28, and Figure 2-29 for outline and installation information. Refer to

Figure 2-33 thru Figure 2-36 for the applicable interconnect diagram.

There are no special tools, fixtures, and equipment required for the installation of the KRFU.

For FMA configuratiions, Honeywell recommends that the WR28 to WR34 adapter is put at the

KRFU end of the cable.

The TX path interconnect loss between the KRFU and the FMA must not exceed 1.5 dB. The

loss is from KRFU flange to antenna flange.

The RX path interconnect loss between the KRFU and the FMA must not exceed 2.9 dB.

The KRFU to TMA connection must be WR28 for TX, coax for RX. The KRFU to FMA WR34

connection needs to include an adapter for TX to adapt from WR28 to WR34.

The TX path interconnect loss between the KRFU and the TMA must not exceed 0.6 dB.

The RX path interconnect loss between the KRFU and the TMA must be a minimum of 0.5

dB, not exceed 2 dB.

NOTE:

RX connection requires a transition from coax to WR42 at the KRFU.

Honeywell recommends that the WR42 to coax adapter is put at the KRFU end of the cable.

The operation of the AES is limited if the conduction-cooled KRFU is installed under the radome

and the mounting plate temperature exceeds 185°F (85°C).

If the shutdown temperature is exceeded, a low-power mode (non-RF communicating) is entered

until the temperature reduces to approximately ten degrees below the shutdown temperature. Refer

to Figure 3-20 for the temperature status report.

NOTE:

When the aircraft is on the ground and the AES is transmitting, and the ambient outside

temperature is very hot, then the mounting plate temperature can be exceeded. The exact

outside air temperature and operating conditions are installation dependent. Consult with

your hardware supplier for further details.