Specifications

No.
1505982
HUGHES PROPRIETARY
Rev.
C
Sheet 18 of 28
Form E75a Hughes Network Systems, LLC
Req.
Number
Name
Function
LNA I/O
QTY
Interface Description
LNA Connector
R6
-
05.
J2
DC Power Input &
Fault Monitor Output
Input /
Output
1
DC Power Input &
Fault Mon
itor Output
(Input Voltage and Current
Consumption
.)
Pin Assignment as shown
in
Table 6-3.
IP67 rated 8-pin
Connector
(
unterminated or
open)
BSD
-08PMMS-
SS7001
Table 6-3. LNA DC Power and Monitor Interfaces (for 1505982-0002 only)
Pin #
Signal
Description
1
DC Power (+)
+10 to +15 VDC
2
DC Power (-)
Return
3
N/A
Do Not Connect
4
N/A
Do Not Connect
5 Alarm (+)
Open Collector
Normal: Short
Fault: Open
6
Alarm (-)
Analog GND
7
N/A
Do Not Connect
8
N/A
Do Not Connect
6.3 INTERFACE TO ANTENNA FEED
The interface to the antenna feed in shown in Table 6-4.
Table 6-4. LNA to Antenna Feed Interface
Req.
Number
Name
Function
LNA
I/O
QTY
Interface Description
LNA
Connector
R6
-
06.
RX
RF
RX
RF Signal input
Input
1
RX signal from Antenna
Feed
WR-42
R6-07.
The LNA waveguide flange shall be sealed to prevent moisture ingress to the waveguide system.
R6
-
08.
The waveguide shall have
O-ring groove and threaded screw holes
as shown in the
outline drawing in
Figure
7-1. The vendor shall supply O-ring and a set of screws with each unit.