Bay Technical Associates DS72 Cabling, RJ-45 Cables and Adapters, Pin EIA-232 Description Signal

DS72 HOST MODULE OWNER’S MANUAL

CABLING

CABLING

RJ-45 CABLES AND ADAPTERS

IMPORTANT: The DS72 network interface module has an RJ-45 port which uses an 8-pin crossed modular cable to connect to a local EIA-232 device such as a computer terminal or external modem. Most serial computers do not have RJ-45 connections; therefore an adapter is provided with this unit to convert from a DE-9 connector to an RJ-45 connector (Bay Tech Part No. 9FRJ45PC-4). An adapter to convert from a DB-25 connector to an RJ-45 connector is also available from Bay Tech, upon request (Bay Tech Part No. 25FRJ45PC-4). The 8-pin crossed modular cable is configured to operate with these adapters.

CAUTION: All power should be removed from the DS72 unit prior to removing or installing cables.

The DS72 Ethernet connection requires a straight cable between the ethernet port of the DS72 module and the network hub. The “LINK” light will light green when a good link has been established.

		DS72 EIA-232 RJ-45 Pin/Signal Definition
Pin	EIA-232	Description
	Signal
1	Handshake Out	(DTR) Line Driver Inactive State = High: +12V when power is applied.
		Used as a handshake line to enable/disable the receiving of characters.
2	Gnd	Signal ground
3	Handshake Out	(RTS) Line Driver Inactive State = High: +12 V when power is applied. Not
		used to enable/disable.
4	TX Out	Transmit Data (data out)
5	RX In	Receive Data (data in)
6	Handshake In	(DSR) Handshake In. –12V when not used.
7	Gnd	Signal ground
8	Handshake In	(CTS) Used as a handshake line to enable/disable the receiving of
		characters.

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