Black Box IC109AE, IC109C, IC109A-R2, IC108C, IC108AE manual Installation

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			CHAPTER 3: Installation
	Table 1 (continued). DCE Jumper Settings.

Function		Jumper Requirements

7.	RS-485 interface terminated
	or unterminated
	• Terminated	S2 in TERM position

	• Unterminated	S2 in UNTERM position

8.	Normal or loopback operation
	• Normal mode	S1 in Normal position

	• Loopback mode	S1 in Loopback position

9.	RS-485 Interface Line Biased (Fail-	S3 Off	No line bias
	Safe), Receive

		S3 On	Line biased

NOTE

If line bias is on, the RS-485 CD will ALWAYS be on.

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Contents IC109AE FCC and IC RFI Statements RS-232↔485/422 Converters NOM Statement Trademarks Used in this Manual Contents Specifications Specifications Introduction Installation Jumper and Switch ConfigurationLayout of the Printed Circuit Board RS-232↔485/422 Converter as DCE XW1A 8-Position Shunt Driver Enabled by Data Point-to-Point DCE/DTE Configuration Function Jumper Requirements RS-232↔485/422 Converters Installation RS-232↔485/422 Converters Simplified Functional Block Diagram DTE Operation DTE Jumper Settings Installation Typical Applications Point-To-Point, 4-Wire Full- or Half-Duplex Multipoint, 4-Wire Half- or Full-Duplex Multipoint, 2-Wire Half-Duplex Sample Multipoint Operation Installation Appendix A. Pinning DCE DTEPin Name Description Quick Reference User-Selectable Options XW1BQuick Reference USER-SELECTABLE Options Copyright 2002. Black Box Corporation. All rights reserved