Campbell CSIOPC Spécifications Page 25

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Section 2. Quickstart Tutorial
2-7
2.1.8 Pulse Sensors
The CR1000 can measure switch closures, low-lever AC signals (waveform
breaks zero volts), or voltage pulses (±20 VDC) on pulse channels (FIGURE
2.1-5 and FIGURE 2.1-6).
Period averaging sensors are connected to single-ended analog channels.
FIGURE 2.1-5. Pulse Input Types
EX1 P1 P2
Sensor
FIGURE 2.1-6. Anemometer Wired to Pulse Channel #1
2.1.9 Digital I/O Ports
The CR1000 has 8 Digital I/O ports selectable, under program control, as
binary inputs or control outputs. These ports have multiple function capability
including: edge timing, device driven interrupts, switch closure pulse counting,
high frequency pulse counting, asynchronous communications, SDI-12
communications, SDM communications, and as shown in FIGURE 2.1-7,
t
urning on/off devices and monitoring whether the device is operating or not.
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