Connector panel of the BDU
98-175666-A
Chapter 3: Interfaces
3-4
3.1.6 RS-232 RJ-45 connector
Use the following connector to connect the BDU to the VSAT modem.
3.1.7 RS-422 RJ-45 connector
Use the following connector to connect the BDU to the VSAT modem
Outline
Pin
Signal
Pin function
1
RSSI 2
Analog
(0
-
14
VDC)
2
DTR/Rx Lock
Modem Rx lock
3
RXD
Receive data
4
GND
Ground
5
GND
Ground
6
TXD
Transmit data
7
DSR/TX Mute
Tx mute
8
RSSI 1
Analog
(0
-
14
VDC)
Shield PCB ground
PCB
ground
Table 3-6: RJ-45 RS-232 connector, male, outline and pin assignment
Outline
Pin
Signal
Pin function
1
Line A RXD (+)
Receive data (non-inverting)
2
Line A RXD (-)
Receive data (inverting)
3
Line B TXD (+)
Transmit data (non-inverting)
4
GND
Ground
5
GND
Ground
6
Line B TXD (-)
Transmit data (inverting)
7
BUC Key line
(+)
Key line (non-inverting)
8
BUC Key line (-) Key line (inverting)
Shield PCB ground
PCB ground
Table 3-7: RS-422 connector, male, outline and pin assignment
