
128 MDS entraNET 900 System Guide MDS 05-4055A01, Rev. A
8.1.2 COM1 Port (AP, Remotes)
A PC may be connected to the Remote transceiver’s COM1 port (RJ-12)
for diagnostics and configuration. Pinout information for the
COM1 port
is provided in Figure 8-2 and Table 8-1.
Figure 8-2. COM1 Port (DCE)
Viewed from the outside of the radio
8.1.3 COM2 Port (AP, Serial Remotes)
A terminal device (DTE) may be connected to the transceiver’s COM2
port (RJ-45) for payload data connection. Pinout information for the
COM2 port is provided in Figure 8-3 and Table 8-2.
Figure 8-3. COM2 Port (DCE)
Viewed from the outside of the radio
1 2 3 4 5 6
Table 8-1. COM1 Port Pinout, RS-232 Interface
Pin Functions COM1 Port
(DCE)
1 Unused
2 Unused
3 Unused
4 Transmit Data (TXD) In
5 Receive Data (RXD) Out
6 Ground —
1 2 3 4 5 6 7 8
Table 8-2. COM2 Port, EIA-232 Interface
Pin Functions COM2 Port
(DCE)
1 Unused
2 Data Carrier Detect (DCD) Out
3 Data Terminal Ready (DTR) In
4 Signal Ground (GND) —
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