SGP/EBBR/E26 - Multiplexer Problem

One of the multiplexers exhibited dropouts of the channels, beginning
with the last channel at temperatures above about 30 C and moving backward
through the channels as the temperature rose. High temperatures affected the
switching speed of the multiplexer.  This is the first time that this behavior has been 
documented in a Campbell Scientific multiplexer. The multiplexer had
been in continuous field use for 10 years and had experienced probably more
switching cycles than what is normally expected of the device in that period.

The multiplexer was replaced to solve the problem.

• temp_air_bottom
• temp_air_top

• temp_air_right
• temp_air_left

• surface_soil_heat_flux_5
• temp_air_top
• latent_heat_flux
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• temp_air_bottom
• corr_soil_heat_flow_5
• surface_soil_heat_flux_1
• corr_soil_heat_flow_2
• surface_soil_heat_flux_2
• corr_soil_heat_flow_1
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• sensible_heat_flux
• surface_soil_heat_flux_avg