APPEND
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X A. REAR-PANEL PORT DESCR
I
PT
I
ONS
A.3 ETH
Figure A-3:
Solder view of the 4-pin female ETH socket on the rear panel of the
AsteRx SB Sx
The 4-pin connector type is an ODU M
I
N
I
-SNAP F Circular Connector Series S40F1C-P04MFG0-50OO.
PIN #
Name
Description
1
TXP
Ethernet TX+
2
TXN
Ethernet TX-
3
RXP
Ethernet RX+
4
RXN
Ethernet RX-
A.4 MAIN (TNC)
Connect an active GNSS antenna to this connector. The gain at the connector (antenna gain
minus cable losses) must be in the range 15 to 50dB.
By default, the receiver provides a 3.3V DC supply on the MA
I
N connector to feed the
antenna.
The supplied antenna voltage can be changed to 5V DC with the command
setAntennaVoltage
. The maximum supported current is 200mA.
Never inject a DC voltage into the MA
I
N connector as it may damage the receiver. When
using a splitter to distribute the antenna signal to several receivers, make sure that no more
than one output of the splitter passes DC. Use DC-blocks otherwise.
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