Honeywell International Inc. WLUWIFIM010 Manuale Utente
CAGE CODE:
97896
SCALE: NONE
SIZE: A
DWG NO.
REV:
SHEET 18
HIF-1472R6(1)
10.2.1.
DC Power
The aircraft DC power supply must be 28 V DC (nominal). The normal minimum and maximum voltages
permitted are 22 and 29.5 V DC respectively. The maximum current drawn by WLU is 0.32 +/- 0.03 Amps at
28 VDC, equivalent to a maximum power consumption of 10 watts.
permitted are 22 and 29.5 V DC respectively. The maximum current drawn by WLU is 0.32 +/- 0.03 Amps at
28 VDC, equivalent to a maximum power consumption of 10 watts.
10.2.2.
Ground Requirements
Proper grounding is a key factor in ensuring proper system operation under normal conditions, high intensity
radiated electromagnetic frequencies (HIRF), and lightning environments. You must obey this section to
satisfy these requirements.
radiated electromagnetic frequencies (HIRF), and lightning environments. You must obey this section to
satisfy these requirements.
NOTE: HIRF and lightning requirements dictate that the shielded wires meet the requirements of Shielded
Grounds. Installation of this system into aircraft manufactured prior to the FAA requirements adheres to
these practices whenever feasible.
Grounds. Installation of this system into aircraft manufactured prior to the FAA requirements adheres to
these practices whenever feasible.
All electrical conductors, terminals posts and component parts that are not at ground potential shall be
insulated or otherwise protected to prevent hardware from creating a short circuit or a spark ignition source.
The WLU is designed to be grounded by the chassis to the ground structure directly. The WLU allows a total
DC voltage drop of less than or equal to 0.7VDC for the 28V DC return path to the RPDU.
insulated or otherwise protected to prevent hardware from creating a short circuit or a spark ignition source.
The WLU is designed to be grounded by the chassis to the ground structure directly. The WLU allows a total
DC voltage drop of less than or equal to 0.7VDC for the 28V DC return path to the RPDU.
11.
ANTENNA INSTALLATION
11.1. General
WARNING: This equipment complies with FCC radiation exposure limits set forth for uncontrolled
environment. This equipment must be installed and operated with a minimum distance of 20 cm between the
radiator/antenna and your body.
This section provides general guidelines for installing Wi-Fi antennas with the WLU. Due to the wide variation
of wireless regulations from country to country, the exact model antennas to be used with the WLU are left to
the customer/installer and country regulations. Honeywell has certified the Sensor Systems antennas listed in
Table 7-1.
The maximum power output of the TWLU before cable loss is equal to 18 dBm. The RF cable used between
the TWLU and antenna is should have insertion of approximately 3 dB. The maximum gain of the Wi-Fi
Antenna listed in Table 7-1 is equal to 5 dBi. Figure 11-1 shows an overall diagram representing the gain and
loss of the system. The maximum Effective Radiated Power (ERP) at the antenna should be 20 dBm if
installing an antenna other than the Wi-Fi antennas listed in Table 7-1.
the TWLU and antenna is should have insertion of approximately 3 dB. The maximum gain of the Wi-Fi
Antenna listed in Table 7-1 is equal to 5 dBi. Figure 11-1 shows an overall diagram representing the gain and
loss of the system. The maximum Effective Radiated Power (ERP) at the antenna should be 20 dBm if
installing an antenna other than the Wi-Fi antennas listed in Table 7-1.