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Chapter 2: Introduction
Table 2-1. Components.
Number
Component
Description
1
Pushbutton
Press this button for Loopback operation.
The button is not pressed in Normal operation.
2
(2) TX LEDs
This dual Red/Green LED will be green when the Received
Data is low, and red when the Received Data is high.
3
(2) RX LEDs
This LED can be used to verify proper polarity
of the interconnecting lines: it should be green when no
data is being transmitted. Red indicates improper line
polarity.
4
DCE/DTE DIP
switch
Slide left to configure the modem as a DCE.
Slide right to configure the modem as a DTE.
5
(1) DB9 connector
Links to RS-232 interface.
6
4-position DIP
switch S3
See Table 3-6.
7
Power connector
9-VDC, 500 mA power connector
8
RJ-11 connector
6-position connector
