Campbell Scientific AL200 ALERT2 Encoder, Modulator, and Sensor Interface User Manual
Page 30
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Appendix C. LED Indicators
b. The GPS light remains red for up 13 minutes as the AL200 downloads
leap second information from the satellite.
c. The Serial LED flashes green or red indicating that the AL200 has
been sent data from a datalogger, or data is being internally
transferred from the sensor inputs to memory.
d. The Radio LED is red briefly while the radio is powered up and
allowed to warm up. If the radio is set to always on, this LED will
constantly be red.
e. The Radio LED flashes orange (actually green and red lights, but is
orange in appearance) indicating that the AL200 is transmitting data.
C-2
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