CR200/CR200X Series Dataloggers - Campbell Scientific
CR200/CR200X Series Dataloggers - Campbell Scientific
CR200/CR200X Series Dataloggers - Campbell Scientific
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Section 11. Programming Resource Library<br />
will respond, however, all other probes will remain active until the timeout<br />
period expires.<br />
Example:<br />
Probe: Water Content<br />
Power Usage:<br />
• Quiescent: 0.25 mA<br />
• Measurement: 120 mA<br />
• Measurement Time: 15 s<br />
• Active: 66 mA<br />
• Timeout: 15 s<br />
Probes 1, 2, 3, and 4 are connected to SDI-12 / Control Port 1.<br />
The time line in TABLE. Example Power Usage Profile for a Network of SDI-12<br />
Probes (p. 119) shows a 35 second power usage profile example.<br />
Table 15. Example Power Usage Profile for a Network of SDI-12 Probes<br />
Sec<br />
Command<br />
All<br />
Probes<br />
Awake<br />
Time<br />
Out<br />
Expires 1 mA 2 mA 3mA 4mA<br />
1 1M! Yes 120 66 66 66 318<br />
2 120 66 66 66 318<br />
• • • • • •<br />
• • • • • •<br />
• • • • • •<br />
14 120 66 66 66 318<br />
15 Yes 120 66 66 66 318<br />
16 1D0! Yes 66 66 66 66 264<br />
17 66 66 66 66 264<br />
• • • • • •<br />
• • • • • •<br />
• • • • • •<br />
29 66 66 66 66 264<br />
30 Yes 66 66 66 66 264<br />
31 0.25 0.25 0.25 0.25 1<br />
• • • • • •<br />
• • • • • •<br />
• • • • • •<br />
35 0.25 0.25 0.25 0.25 1<br />
Total<br />
mA<br />
119