Rs232/Rs485/Rs422 Plus Irig-B Via Db9; Figure 20: Db9 Female Port Pin-Out; Table 7: Db9 Female Dte Port Pin-Out With Irig-B - RuggedCom RuggedServer RS416 Family Installation Manual

Serial Ports

3.3 RS232/RS485/RS422 plus IRIG-B via DB9

Each port is individually selectable via software to be RS232, RS485 or RS422. IRIG-B
signal and ground are available on pins 4 and 6, respectively, for every mode. The DB9
port pin-out diagram and listing are shown below.
NOTE: The RS232 pin configuration of the IRIG-B ports is DTE rather than DCE,
meaning that the port transmits on pin 3 and receives on pin 2. Connection to DTE ports
requires null-modem cabling (pin 2 to 3; pin 3 to 2).

Figure 20: DB9 female port pin-out

Pin RS232 DTE Mode
1
2
3
4
5
6
7
8
9
Shield

Table 7: DB9 Female DTE Port pin-out with IRIG-B

NOTES:
1. No internal termination is provided.
2. In RS232 mode, pins 7 and 8 are connected internally. These pins enter a high impedance state. A
DCE that asserts RTS will see CTS asserted, although the RuggedServer will not perform hardware
flow control.
3. In RS232 DTE mode, ports receive on pin 2 and transmit on pin 3.
The IRIG-B output on each port is configurable via software to provide IRIG-B pulse-
width modulated output (IRIG-B006 or IRIG-B007) or PPS output, a single pulse per
second on the second.
®
RuggedCom
RS485 Mode
-
3
RX TX/RX+
3
TX
+IRIG-B
Common (Isolated) Ground
Common (Isolated) Ground
2
RTS TX/RX-
2
CTS
Common (Isolated Ground)
Chassis Ground
26
RuggedServer™ RS416 Family Installation Guide rev118
RS422 Mode
- RX-
TX+
- RX+
TX-
- -
3