Vaisala PTB210 SERIES Manuel d'instructions Page 31

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Serial Data
The digital pressure sensor PTB210 transmits serial data which are received at the
COM-Ports of the Datalogger CR1000. Figure 3.3 shows the common connection
scheme.
Figure 3.3: Connecting to COM-Ports
[Manual - CR1000 Measurement & Control System, 1/08]
The operating command is send through the transmit line (TX) while the receive
line (RX) is responsible for the data acquisition.
SDI-12
Campbell Scientifics Temperature/Humidity Sensor CS215 features a digital SDI-12
output (Serial Data Interface at 1200 Baud). It allows simple connection to the
Control-Ports of the Datalogger CR1000 according to Fig. 3.4.
Figure 3.4: Connecting to Control-Ports
[Manual - CR1000 Measurement & Control System, 1/08]
Figure 3.4 shows the common connection sheme. Only the transmit lines (TX)
can be used to operate with the SDI-12 sensor output, because communication is
achieved by digital communications along a single serial line.
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