4.0 INSTALLATION
The Model 1180 is easy to install. After configuring the DIP switches, simply connect the single fiber cable, hook up the RS-232 interface, and plug the power supply adapter into the 1180. Figure 4 shows the location of the interface connections on the Model 1180 rear panel.
Powered Short Range Modem | Made In The USA |
Power | RS-232 Interface | Fiber |
|
Figure 4. Rear panel of Model 1180 showing interface connections
4.1 SINGLE FIBER CONNECTION
These short range modems are designed to work in pairs. You will need one at each end of single multi-mode fiber cable. Depending upon the data rate setting you select, your cable may be a maximum of
2.5or 5 Km long. The fiber cable connects to each Model 1180 using either an ST or an SMA connector. Figure 5 shows a close up of both connector types.
SMA
ST
alignment pin faces down
Figure 5. Close up of ST and SMA connections
4.2 RS-232 CONNECTION
The Model 1180 is configured as a DCE. Therefore it wants to connect to a DTE. When connecting the Model 1180 to DTE hardware such as a PC, host or terminal, use a straight through RS-232 cable. When connecting the Model 1180 to DCE hardware such as a modem, multiplexer or printer, use a null modem RS-232 cable. The diagrams below show some typical RS-232 null modem wiring configurations. Consult your hardware user manual for the specific pin configuration you need.
Local Software Handshaking
RS-232 DCE | Model 1180 |
DB-25 Pin No. | DB-25 Pin No. |
1 --------------------------------------------------- | | | | | | 1 |
2 --------------------------------------------------- | | | | | | 3 |
3 --------------------------------------------------- | | | | | | 2 |
4 | | | | | | | | | | | | | | 4 |
| | | | | | | | | | | | |
5 | | | | | | | | | | | | | 5 |
| | | | | | | | | | | |
6 | | | | | | | | | | | 6 |
| | | | | | | | | |
8 | | | | | | | | | 8 |
| | |
20 | | | | | | | | | 20 |
| | | |
7 --------------------------------------------------- | | | | | | 7 |
Local Hardware Handshaking
RS-232 DCE | Model 1180 |
DB-25 Pin No. | DB-25 Pin No. |
1 --------------------------------------------------- | 1 | | | |
2 --------------------------------------------------- | 3 | | | |
3 --------------------------------------------------- | 2 | | | |
4 --------------------------------------------------- | 5 | | | |
5 --------------------------------------------------- | 4 | | | |
| | 6 | 20 | |
|
| | 8 | | | | |
| | | | |
20 --------------------------------------------------- | 6 | | | |
| | |
| | | | 8 | | | |
| | | | | | |
7 --------------------------------------------------- | 7 | | | |
