Vaisala RFL100 User Manual
Also see for VaiNet RFL100: Quick guideUser guideQuick guideQuick guide
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Contents
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2.5 Service PortThe service port of the data logger provides a local interface for performing service actionsthat cannot be done over the air, such as updating the device firmware. The service actions arebased on file transfer using Media Transfer Protocol (MTP), so no special software is needed.The service port connector is a standard micro-USB connector.The service port can be used to supply operating power to the data logger. Use a powersupply that fulfills the requirements listed in Table 5 (page 13).Table 5 Specifications for a USB Power SupplyProperty SpecificationOutput voltage 5 VDCOutput current min. 100 mAOutput connector Micro-USBCertifications and approvals • Certified to IEC 60950-1 or IEC 62368-1• Approved for use in your countryBatteries with a sufficient voltage must always be in place inside the data logger, even whensupplying external power through the service port.When using an external power supply, the main batteries will bedrained very slowly. As alkaline batteries may leak when left in place for a longtime, always use compatible 1.5 V lithium batteries instead of alkaline batterieswhen using an external power supply.CAUTION!2.6 Delays in a VaiNet NetworkVaiNet protocol and VaiNet devices are designed for power-efficient operation. Some of thedesign choices that enable long battery life also create significant delays that the users shouldbe aware of.Intermittent Radio ConnectionsRadio connections between VaiNet access points and data loggers are not continuous. Accesspoints take turns communicating in a two-minute cycle, and connected data loggers send theirmeasurement data to their connected access point every four minutes. This introduces variousdelays:Chapter 2 – Product Overview13 |
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