HGA-7001
Installation Manual
Document: 862-A0089_IM issue 1.6
COMPANY CONFIDENTIAL
Page 17 of 45
(3) HGA to DLNA RF Interconnect Electrical Requirements:
(a) The combined loss of the RF cable between the DLNA and the antenna should be 0.3 dB
or less as recommended by ARINC 781. For some installations this may be difficult if the
separation between the DLNA and the antenna is too large due to practical mounting
requirements. In such cases it may be possible to increase this loss and still meet the
coverage requirements depending on other system parameters that influence the RF
path, i.e. DLNA noise figure, DLNA gain, HPA power output and path loss between the
HPA and the antenna. These cases should be referred to the Supplier for assessment.
(b) Cables and connectors must satisfy the ARINC 781 intermodulation requirements and it
is advisable that they are supplied with documentation confirming this. Contact the
Supplier for support in this regard.
(4) HGA to DLNA Multi-Pin Interconnect Electrical Requirements
(a) The total resistance of the CONTROL wire and DLNA Screen must be < 8 Ω.
(b) The resistance of the BITE wire must be < 1.0 kΩ.
(c) It is recommended the BITE/CONTROL wires be screened and grounded on both sides.
(5) HGA to Aircraft Power Interconnect Electrical Requirements
CAUTION: THE ANTENNA WILL BE DAMAGED BY THE APPLICATION OF 115 VAC AT 50-60
HZ. THE HGA-7001 OPERATES FROM 115 VAC VARIABLE FREQUENCY (280 TO
800 Hz) OR 28 VDC ONLY – DC INPUT HAS NOT BEEN FORMALLY QUALIFIED
NOTE: THE ANTENNA NEEDS ONLY ONE POWER SOURCE (EITHER AC OR DC) TO BE
CONNECTED.
(a) AC SUPPLY WIRING (280 Hz to 800 Hz)
1) The volt drop must be less than 19 VAC (i.e. the supply voltage must not drop
below 96 VAC) at the CONTROL and DATA connector under aircraft emergency
conditions.
2) The maximum AC current drawn by the antenna at 96 VAC is 200 mA.
(b) DC SUPPLY WIRING
1) The volt drop must be less than 10.5 VDC (i.e. the supply voltage must not drop
below 17.5 VDC) at the CONTROL and DATA connector under aircraft emergency
conditions.
2) The maximum DC current drawn by the antenna at 17.5 VDC is 1.14 A.
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