GUILCOR AR004926, Инструкция по эксплуатации, Страница: 50 / 75

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A similarly for sensors with a voltage or current output - unwanted
couplings can cause incorrect measurements.
If the Multilogger reports an error state, you can find more information
in
Appendix 1 - Selected error messages .
Another group of problems are random spikes of the measured
values. Most commonly, they are caused by a source of
electromagnetic interference located in the proximity of the device or
cables. Furthermore, you have to also make sure that the insulation
of the cables is not damaged and that conductors thus do not make
any incidental connections with other metal parts.
PC communication problems _______________________
If the Multilogger communicates via USB interface, do not use cables
longer than 5 meters. Connecting and disconnecting the cable while
the communication is in progress can cause temporary unavailability
of the USB device in the computer. In this case, it may be necessary
to close and re-launch the SW (including the communication service).
If this does not help, restart the computer.
If you communicate with the Multilogger via Ethernet interface, make
sure that nothing is connected to the USB port of the device. Some
USB chargers can deactivate the RS232 and Ethernet interfaces. Use
the supplied AC adapter to external power of device and for charging
the batteries.
If Multilogger does not communicate via Ethernet, try USB
communication. If that is working, some settings of the Ethernet
interface will most probably be incorrect (such as the gateway
address etc.).