S&C Instruction Sheet 1074-510 13
Operation
Interface Pinouts
The RS-232 Interface of the SpeedNet ME radio is con-
figured as Data Communications Equipment (DCE). See
Figure 4.
The SpeedNet ME radio Ethernet interface uses an
RJ-45 connector with the pinout shown in Figure 5. The
Ethernet port is on the rear panel of the SpeedNet ME
radio. It is auto-sensing for assignment of transmit and
receive lines (no crossover cables required) and auto-
negotiates for a 10-Mbps or 100-Mbps data rate as required
by the connected device.
Cable Installation
Complete the following steps when connecting cables:
STEP 1.
Connect the antenna to the SpeedNet ME radio.
STEP 2.
Connect the Ethernet cable to the SpeedNet ME
radio and PC used for configuration.
STEP 3.
Connect the power supply to the SpeedNet ME
radio.
6
7
8
9
1
2
3
4
5
Pin
Function
Description
1
NC
No connection
2
TXD
RS-232 transmit
3
RXD
RS-232 receive
4
NC
No connection
5
GND
Signal ground
6
NC
No connection
7
CTS
Clear to send
8
RTS
Request to send
9
NC
No connection
Figure 4. SpeedNet ME radio RS-232 interface pinout.
1
8
Pin
Function
Description
1
TXD+
Transmit
2
TXD-
Transmit
3
RXD+
Receive
4
NC
No connection
5
NC
No connection
6
RXD-
Receive
7
NC
No connection
8
NC
No connection
Figure 5. SpeedNet ME radio Ethernet RJ-45 interface pinout.
