Patton electronic 4900 user manual Connecting the serial port, Pin Description

SmartNode 4900 User Manual 3 • Hardware installation

Connecting a 10/100Base-T Ethernet port to an Ethernet-capable workstation. The 10/100Base-T Ether- net ports can connect to a single Ethernet-capable workstation or PC by means of any Ethernet cable.

Connecting the EIA-561 RS-232 configuration port (DCE configured)

Install the supplied RJ-45-to-RJ-45 cable with the DB9-RJ45 adapter between the SN4900 IpChannel Bank RS-232 console port (figure 10) and an open serial port on your computer. If you need to assemble your own cable, refer to the pinout diagram in figure 10.

RJ-45 Jack		DB-9	Signal Name
		6	DSR
	1	1	CD	DSR & DTR are internally
	2	4	DTR	wired together
	3	5	SG
	4
		2	RD (driven)
	5
		3	TD (received)
	6
	7	8	CTS
	8	7	RTS

Figure 10. DB-9-to-RJ-45 cable diagram

Connecting the serial port

Serial devices (V.35 or X.21) are connected to the SmartNode’s serial ports (see table 8) via a cable terminated at the SmartNode 4900. The V.35 connector is a DB-25 female and the X.21 uses a DB-15 female. The sync serial ports are configured as DTE.

Table 8. Serial port pin-outs

V.35 Interface (DB-25)			X.21 interface (DB-15)
Pin	Description	Pin	Description
1	Frame Ground	1	Signal Ground
2	TD-a (to DCE)	2	Transmit (to DCE)
3	RD-a (from DCE)	3	Control (to DCE)
4	RTS (to DCE)	4	Receive (from DCE)
5	CTS (from DCE)	5	Indication (from DCE)
6	DSR (from DCE)	6	Signal Element Timing (from DCE)
7	Signal Ground	8	DTE Common Return
8	CD (from DCE)	9	Transmit (to DCE)
9	RC-b (from DCE)	10	Control (to DCE)
11	XTC-b (to DCE)	11	Receive (from DCE)
12	TC-b (from DCE)	12	Indication (from DCE)
14	TD-b (to DCE)	13	Signal Element Timing (from DCE)
15	TC-a (from DCE)
16	RD-b (from DCE)

17RC-a (from DCE)

20DTR (to DCE)

Installing the IpChannel Bank 31