Chapter 3
Communication Ports
RUGGEDCOM RX1000
Installation Guide
22
Precision Time Protocol (PTP) Ports
Pin
Name
Description
12
13
14
15
TxCLK
Transmit Clock
16
RxCLK
Receive Clock
17
18
19
20
DTR
Data Terminal Ready
21
22
23
24
25
1
8
Figure 22: Serial RJ45 Port Pin Configuration
Pin
RS232 Mode
RS485 Mode
RS422 Mode
1
a
DSR/RI
RX-
2
a
DCD
3
DTR
4
Common (Isolated) Ground
5
RX
RX+
6
TX
TX/RX+
TX+
7
CTS
ab
8
RTS
b
TX/RX-
TX-
Shield
Chassis Ground
a
Connected internally.
b
In RS232 mode, this pin enters a high impedance state. A DTE that asserts RTS will see CTS asserted, although the device will not perform hardware flow
control.
Section 3.7
Precision Time Protocol (PTP) Ports
The optional Precision Time Protocol (PTP) card for the RX1000 provides accurate time synchronization across
local and wide area networks. The PTP card is capable of using a variety of time synchronization methods
including Network Time Protocol (NTP), IRIG-B, and IEEE 1588, making it a flexible product for new and existing
installations.