User's Manual Part 1

Page 4-3
3 Mar 2017
23-15-29
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
JetWave™ System
© Honeywell International Inc. Do not copy without express permission of Honeywell.
NOTE: While engineering the JetWave™ System LRU interconnections, make sure the GXA LRU
quadrax terminations do not distort natural wire orientations. There are geometric
relationships that must be maintained between the quadrax contact and the natural twist of
the star-quad wire. Wire bend radii and clamping conditions typical of aircraft installations
should not cause deviation from NEXT parameters of the ARINC 664 compliant Star Quad
cables 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
. Make 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 Modm
an
and KRFU must have a minimum loss of
11dB at 950 MHz and a maximum loss of 18 dB at 1,450 MHz and 21.2 dB at 1,950 MHz.
If the chosen cable loss is too small, an equalizer should be inserted in the TX path and an
atten
uator in the RX path. The choice of parts are detailed in Table 4-2.
NOTE: An attenuator cannot be used in the TX path as the TX path also passes the
reference to the KRFU and the attenuator will introduce too much loss to that portion
of the signal.
• The loss at 50 MHz in the TX path must be less than 3.1 dB.
• The TX and RX cable loss should be matched within 1dB at 1,450 MHz.
• The TX and RX coax cables should 50 ohm
s with a VSWR of le
ss than 1.5:1.
• The TX and RX cables must have a minimum
isolation at 2,150 MHz of 120 dB.
• The isolation specification may need
to be increased if the TX and RX cables are
in close proximity to high power RF signals in the 950 MHz to 1,950 MHz band,
e.g. cellular base stations.
Insert C:
PN: D38999/26FE6PN
PN: D38999/26FE6PN
PN: not included
PN: 620022
Arrangement 12F5C2, Shell Size 2:
#12 contacts
#16 contacts
Size 16 optical contacts (not used)
Size 5 coax contact for RF connections
4
1
5
2
Table 4-1. ARINC 600 Connectors (Continued)
Connector PN Description Qty
Draft as of 31 May 2017