CR200/CR200X Series Dataloggers - Campbell Scientific
CR200/CR200X Series Dataloggers - Campbell Scientific
CR200/CR200X Series Dataloggers - Campbell Scientific
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Section 3. Overview<br />
3.1.3.4 Power Terminals<br />
Read More! See <strong>CR200</strong>(X) Power Supply (p. 53).<br />
Power In<br />
• Power Supply: External battery is connected to Battery+ and Batteryterminals.<br />
• Input voltages in excess of 18 V may damage the <strong>CR200</strong> and/or power<br />
supply. Power to charge a 12 V lead-acid battery (16-22 VDC) must be<br />
connected to the Charge+ and Charge- terminals NOT to Battery+ and<br />
Battery-.<br />
Power Out<br />
3.1.3.5 Communications Ports<br />
• Peripheral 12 V Power Source: 1 terminal (SWBattery) and the associated<br />
ground (G) supply power to sensors and peripheral devices requiring<br />
nominal 12 VDC. Sensors and peripheral devices may also share a<br />
connection to the Battery+ and Battery- terminals which is the same as<br />
connecting them directly to the battery. This supply may drop as low as 7<br />
VDC before datalogger operation stops. Precautions should be taken to<br />
minimize the occurrence of invalid data from underpowered sensors.<br />
Read More! See Telecommunications and Data Retrieval (p. 131) and PakBus<br />
Overview (p. 133).<br />
The <strong>CR200</strong>(X) is equipped with an RS-232 communications port. This port<br />
allows the <strong>CR200</strong>(X) to communicate with other computing devices, such as a<br />
PC, or with other <strong>Campbell</strong> <strong>Scientific</strong> dataloggers.<br />
Note RS-232 communications normally operate well up to a transmission cable<br />
capacitance of 2500 picofarads, or approximately 50 feet of commonly available<br />
serial cable.<br />
• 9-pin RS-232: Non-isolated port for communicating with a PC through the<br />
supplied serial cable, serial sensors, or through 3rd party serial<br />
telecommunications devices. Acts as a DTE device with a null-modem<br />
cable.<br />
Read More! See APPENDIX. Serial Port Pin Outs (Appendix p. 21).<br />
Some versions of the <strong>CR200</strong>(X) include an optional spread spectrum radio for<br />
wireless communication with other devices equipped with a spread spectrum<br />
radio.<br />
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