Campbell Scientific RF500M Radio Modem - Manual (Page 10)

Section 2. Radiotelemetry Network Components
Depending on the radio being used, the appropriate internal jumper must be
selected on the RF500M circuit board. There is a set of six jumpers in series
located just under the Campbell Scientific, Inc. name and circuit board version
number etched on the board. When looking at the front panel with the three
ports, the jumpers that need to be set are located in the back, right corner of the
circuit board. The two jumpers next to the edge of the circuit board should be
selected if using the RF310 series radios. The two jumpers in the center
should be selected if using the RF300 series radios. The two jumpers on the
inside of the board should be selected if using an unmodified DataRadio DL-
3400 radio.
FIGURE 2-2. RF500M Radio Jumper Location
2-4