DATA CONNECT
iii User’s Manual - SM202T/SMV23 Modem
Contents
Contents .................................................................................................................. iii
Figures..................................................................................................................... iv
Chapter 1 Introduction ............................................................................................ 5
Features ......................................................................................................................6
Applications .................................................................................................................7
Chapter 2 Installation .............................................................................................. 8
Unpacking Your Hardware ..........................................................................................8
Additional Items You Need to Complete Your Installation........................................... 8
Hardware Overview..................................................................................................... 9
Front View ...................................................................................................................9
Back View....................................................................................................................9
Rack-Mount View ......................................................................................................10
Installation Summary................................................................................................. 10
Configuring the Modem ............................................................................................. 11
Setting the DIP Switches...........................................................................................13
SW1-1 Auto RTS ..............................................................................................14
SW1-2 RTS-CTS Delay (Bell 202 Mode Only) ................................................. 14
SW1-3 Transmit Carrier Control .......................................................................14
SW1-4 – Soft Carrier Control............................................................................... 15
SW1-5 Anti-streaming ......................................................................................15
SW1-6 2-Wire or 4-Wire Operation .................................................................. 15
SW1-7 Transmitter Termination Impedance..................................................... 15
SW1-8 Receiver Termination Impedance......................................................... 16
JP1 Transmit Level...........................................................................................16
JP2 RS-232 or RS-485 Serial Interface (Standalone Only)............................. 17
For Rack-Mount Plug-in Modules ........................................................................17
Connecting to a Transmission Line ........................................................................... 18
Connecting to a Voltage Source................................................................................ 19
Connecting to an RS-232 Device .............................................................................. 20
Connecting to an RS-485 Device .............................................................................. 20
LEDs.......................................................................................................................... 21
Loopback Control Switch...........................................................................................21
Problem Solving ........................................................................................................23
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