Multitech MT56DSU-R Owner's Manual download pdf (Page 17)

Chapter 2 - Hardware Installation

2.2.1 12 -Position DIP Switch (# 1-12)

The 12-position DIP switch is used to set data rate, clocking, RTS

control, DSR control, and Async/Sync operation, diagnostic modes

(Loopback Test, Test Pattern ), Circuit Assurance, and System

Status. The default settings are shown in Table 2-1. If you want to

make changes to one of these settings, refer to section 2.3.

2.2.2 4-Position DIP Switch (# 13-16)

The 4-position DIP switch is used to select Async Word Length,

Elastic Store, and Anti-Streaming options. The defaults are 10-Bit

Async Word Length, Elastic Store disabled, and Anti-Streaming

disabled. If changes to these settings are required, refer to section

2.3.

2.2.3 RS232/V.35 Shunt

Data terminal equipment with either a RS232 or V.35 interface can

be connected to the DB25 connector on the backplane of the rack.

The 16-pin shunt on the back of the MT56DSU-R board must be

placed in either the "V.35 position or the "RS232" position. The

interface is determined by the position of this 16-pin shunt. The

MT56DSU-R is shipped from the factory with the 16-pin shunt in the

RS232 position.

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Multitech MT56DSU-R Owner's Manual Page 17