User Manual Part 1

Page 2-5
16 Sep 2015
23-15-29
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
JetWave™ System
© Honeywell International Inc. Do not copy without express permission of Honeywell.
for Ethernet interfaces terminating on Quadrax receptacles. Refer to the applicable
interconnection diagrams for the indicator that the connector rotation of the wire is in a
clockwise direction.
(3) The Modman bonding is as follows:
The Modman must be electrically bonded to the airframe. Mak
e sure that the mating surfaces
are free from contaminants such as paints or other non-conductive elements. A bonding test
point is available on the front panel. The bonding resistance must be less than or equal to 2.5
mΩ.
(4) The TX and RX IF cables between the Modman and KRFU must have a minimum loss of
11dB at
950 MHz and a maximum loss of 21.2 dB at 950 MHz.
If the chosen cable loss is too small, an equalizer should be inserted in the TX path and an
attenuator in the RX
path. The choice of parts are detailed in Table 2-2.
NOTE: An attenuator cannot be used in the TX path as the TX path also passes the
reference to the KANDU and the attenuator will introduce too much loss to that
portion of the signal.
C. APM
The APM can be installed in any orientation. Refer to Figure 2-25 for outline and installation
information
and Figure 2-33 thru Figure 2-36 for the applicable interconnect diagram.
There are no special tools, fixtures, and equipment required for the APM installation.
There are no clearance requirements for the APM.
Use 0.164-32 UNC-2A corrosion resistant mounting fasteners. Do not exceed 25 in-lb (2.8 Nm)
when you torque the screws.
Connect the APM to the Modman with cable made up of two twisted shielded 24 AWG pairs with
Teflon insulation or aerospace grade shielded CAT5/CAT5e cable, with a maximum length of 9.8
feet (3 m).
The APM to Modman pendant cable, Honeywell recommends ECS PN 92240 or equivalent that is
a composite (a shielded conductor bundle) construction to support the environmental conditions
required.
Table 2-2. Modman Cable Loss Values
Cable Loss @ 950 MHz
< 6.5 dB
> 6.5 dB, <11 dB > 11 dB
Equalizer in TX path 10.5 dB
Minicircuits, PN T
A-10R5DC1
or equivalent
4.8 dB
Minicircuits, PN TA-4R8DC1
or equivalent
None
Attenuator in RX path 10.5 dB
Minicircuits, PN TAT-10R5-1
or equivalent
4.8 dB
Minicircuits, PN TAT-4R8-1 or
equivalent
None