User guide

1892 1139 - RSX Range of Intelligent Modems User Guide - v7.1 / Nov 2007 13
The links can be found as shown in Figure 10.
Figure 10 - Link Positions on RSXn50 PCB underside
Links are made and broken by adding and removing a solder bridge between pads on the
board as shown below.
Figure 11 - Link adjustments
2.2 PROGRAMMING RADIO PARAMETERS - SXN50
The RSXn50 is normally supplied with a table of channel frequencies preset, and the
radio set to use channel 0. However, you can select another channel as the current
operating channel and/or reprogram the table to other frequencies (within the ‘switching
bandwidth’ which is a fixed attribute of the radio hardware). Certain other parameters are
also programmable, as detailed below.
Radio parameters are programmed by connecting a unit to a standard PC serial port using
a special adaptor cable and using a program, SXn50.exe, which you can download from
the Wood & Douglas website (www.woodanddouglas.co.uk).
v If you are using a computer which has no serial port, see the Appendix on page 31
for USB to serial adaptors.