Campbell Scientific CSAT3B CSAT3B Three-Dimensional Sonic Anemometer - Page 46

CPI Communications

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CSAT3B Three-Dimensional Sonic Anemometer FIGURE 7-11. SDM star topology (CSAT3B sensors arms and grounding cables not shown) 7.7.2 CPI Communications If data collection from the anemometer is to be done by a datalogger using CPI communications, then connect a CSAT3BCBL2 to the Power/SDM port by screwing in the M16 connector into the port until tight. NOTE A CSAT3BCBL1 may also be used for power, but the SDM wires will not be used. The CSAT3BCSBL1 also has lighter gauge power wires, which increases voltage loss over long cable length, so it should only be used for shorter cable lengths. Next, connect a CSAT3BCBL3 to the CPI/RS-485 port in the same manner. If only one CSAT3B is being measured, the opposite end of the power cable should have pigtail wire leads which may be wired to the 12 V and G terminals on a datalogger or to another 12 to 32 Vdc power supply. The CPI cable should have the RJ-45 connector plugged into the CPI port of the datalogger. 36

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CSAT3B Three-Dimensional Sonic Anemometer
FIGURE 7-11.
SDM star topology (CSAT3B sensors arms and
grounding cables not shown)
7.7.2 CPI Communications
If data collection from the anemometer is to be done by a datalogger using CPI
communications, then connect a CSAT3BCBL2 to the
Power/SDM
port by
screwing in the M16 connector into the port until tight.
A CSAT3BCBL1 may also be used for power, but the SDM wires
will not be used.
The CSAT3BCSBL1 also has lighter gauge
power wires, which increases voltage loss over long cable length,
so it should only be used for shorter cable lengths.
Next, connect a CSAT3BCBL3 to the
CPI/RS-485
port in the same manner.
If only one CSAT3B is being measured, the opposite end of the power cable
should have pigtail wire leads which may be wired to the
12 V
and
G
terminals
on a datalogger or to another 12 to 32 Vdc power supply.
The CPI cable
should have the RJ-45 connector plugged into the CPI port of the datalogger.
NOTE
36