Ethernet Data Interface (Rj-45) - GE MDS SD Series Reference Manual

20 SD Series Ref. Manual (Packet & Transparent Mode)
• TXD+ / TXA and TXD– / TXB are data received by the radio and sent out
• TXD+ / TXA is positive with respect to the TXD– / TXB when the line output is a "0"
EIA-422 4-WIRE CONNECTIONS
TXD +
2
3
RXD +
RXD – 7
8
TXD –
Figure 18. RS-422/485 Wiring Arrangements

4.6 Ethernet Data Interface (RJ-45)

The transceiver's Ethernet Port is used to connect the unit to an external
Ethernet device. The port has built-in MDIX (auto-sensing) capability,
allowing either a straight-through or crossover cable to be used.
Figure 19 and Table 9 show pinout data for the Ethernet port. The
Ethernet interface supports both radio management and payload data
transport.
Connecting to the radio via Telnet supports radio management and pro-
vides the same menu-based user interface available via
Various options are available for passing Ethernet data, allowing system
administrators to optimize the configuration for maximum narrowband
efficiency, based on the operating characteristics of their system.
Figure 19. Ethernet Port (RJ-45) Pinout
(As viewed from the outside of the unit)
Table 9. Ethernet Port (IP/Ethernet) Pinouts
Pin
1
2
3
4
5
6
7
8
Invisible place holder
EIA-485 2-WIRE CONNECTIONS
RXD + TXD +
RXD – RXD +
TXD + RXD –
TXD – TXD –
This jumpering must be provided by user.
8 6 5 3
7 4 2 1
Functions
Transmit Data (TX)
Transmit Data (TX)
Receive Data (RX)
Unused
Unused
Receive Data (RX)
Unused
Unused
2
RXD+/TXD+
3
7
RXD–/TXD–
8
.
COM1
Ref.
High
Low
High
Low
MDS 05-4846A01, Rev. C