Microhard Systems IPN3G - Rear Panel Connectors

© Microhard Systems Inc. 21
3.0 Hardware Description
Drawing 3-5: IPn3G Rear View
The DATA (RS232 Port (DCE)) on the rear
of the circuit board is used for:
 RS232 serial data (300-921kbps).
The RS422/485 Port is used to interface the Nano
Development Board to a DTE with the same
interface type. Either the RS232 or RS422/485 interface is used
for data traffic.
Vin+/Vin– is used to power the unit. The input Voltage range
is 7-30 Vdc.
PoE*– The IPn3G can also be powered using Passive PoE on the
Ethernet Port, via a PoE injector.
3.1.2 Connectors and Indicators
3.1.2.2 Rear
On the back of the IPn3G is the Data port, RS485/422 interface, as well as the power connections. The
unit also has the SMA(F) connectors for the Main (TX/RX), GPS and the Diversity (RX) antenna’s.
Name Data Port Input or
Output
DCD 1 O
RXD 2 O
TXD 3 I
DTR 4 I
SG 5
DSR 6 O
RTS 7 I
CTS 8 O
RING 9 O
Table 3-2: Data RS232 Pin Assignment
Caution: Using a
power supply that
does not provide
proper voltage may
damage the modem.
RS485/422
TxB -
TxA -
RxB -
RxA -
GND -
Vin+ -
Green Conn.
Pin No.
Name Input or
Output
6 TxB (D+) O
5 TxA (D-) O
4 RxB (R+) I
3 RxA (R-) I
2 Vin -
1 Vin + I
Table 3-3: Data RS422/485 / Vin Pin Assignment
RS485/422
Vin+
GND
RxA
RxB
TxA
TxB
DATA
ETHERNET
ANTENNA
GPS
RX DIV
Ethernet RJ45 Connector Pin Number
Source
Voltage
1 2 3 4 5 6 7 8
9 - 30 Vdc Data Data Data DC+ DC+ Data DC- DC-
Table 3-4: Ethernet PoE Connections
*PoE only available on mod-
els shipped after March 1,
2013*