CTC UNION TECHNOLOGIES CO., LTD.
================================

   IC485 IP-1

   Card Type   Current Loop Converter                             
   I/O Options RS-485 via terminal block, RS-232 via DB-25        
               connector, DC power                                
   Data Bus    External                                           

<gopher://bitreich.org/I/th99/i/C-D/55152-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |        Function        | Label |    Function    | Label |  |
   |------------------------+-------+----------------+-------|  |
   | Button - unidentified  |  BT   | RS-485 via     |  CN2  |  |
   | function               |       | terminal block |       |  |
   |------------------------+-------+----------------+-------|  |
   | RS-232 via DB-25       |  CN1  | DC power       |  CN3  |  |
   | connector              |       |                |       |  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                 | Label | Position |
   |-----------------------------------------+-------+----------|
   | i Unit configured for DCE operation     |  SW1  |    On    |
   |-----------------------------------------+-------+----------|
   | Unit configured for DTE operation       |  SW1  |   Off    |
   |-----------------------------------------+-------+----------|
   | i Unit configured for monitor mode      |  SW2  |   Off    |
   |-----------------------------------------+-------+----------|
   | Unit configured for simulation mode     |  SW2  |    On    |
   |-----------------------------------------+-------+----------|
   | i Unit configured for half-duplex       |  SW3  |    On    |
   | operation                               |       |          |
   |-----------------------------------------+-------+----------|
   | Unit configured for full-duplex         |  SW3  |   Off    |
   | operation                               |       |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   |  LED   |  Color  | Status  |           Condition           |
   |--------+---------+---------+-------------------------------|
   |  LED1  |   Red   |   On    |    Unit is receiving power    |
   |--------+---------+---------+-------------------------------|
   |  LED1  |   Red   |   Off   |  Unit is not receiving power  |
   |--------+---------+---------+-------------------------------|
   |   RD   |   Red   |   On    |    Unit is receiving data     |
   |--------+---------+---------+-------------------------------|
   |   RD   |   Red   |   Off   |  Unit is not receiving data   |
   |--------+---------+---------+-------------------------------|
   |   TD   |   Red   |   On    |   Unit is transmitting data   |
   |--------+---------+---------+-------------------------------|
   |   TD   |   Red   |   Off   | Unit is not transmitting data |
   +------------------------------------------------------------+