Siemens MTX-H15 user manual Possible communications disturbances

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MTX-H15 UMTS-HSDPA terminal modem

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7.3.5 Possible communications disturbances

Possible communication disturbances include the following:

Noise can be caused by electronic devices and radio transmitters.

Path-lossoccurs as the strength of the received signal steadily decreases in proportion to the distance from the transmitter.

Shadowing is a form of environmental attenuation of radio signals caused by hills, buildings, trees or even vehicles. This can be a particular problem inside buildings, especially if the walls are thick and reinforced.

Multi-path fading is a sudden decrease or increase in the signal strength. This is the result of interference caused when direct and reflected signals reach the antenna simultaneously. Surfaces such as buildings, streets, vehicles, etc., can reflect signals.

Hand-overoccurs as you move from one cell to another in the GSM network. Your mobile application call is transferred from one cell to the next. Hand-over can briefly interfere with communication and may cause a delay, or at worst, a disruption.

MTX-H15 User Manual V.2.0Pag. 25 Preliminary. Subject to change without prior notice

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Contents MTX-H15 Terminal Important information Service and SupportEDITION. Version Edition VersionPag Preliminary. Subject to change without prior notice USB Cable Description IntroductionOrdering Information & Version Highlights General featuresFeature Implementation Main Features and ServicesTypes of Mobile Station MTX-H15 Short Message ServiceVoice Calls Hsdpa DataUmts Parameter Mechanical Description PrecautionsOverview SIM CardDimensions of the MTX-H15 terminal in mm DimensionsElectrical Description Power ConnectorMicn Audio ConnectorEPN EPPOFF Mini USB ConnectorSIM card reader Antenna ConnectorReal Time Clock Software Updates Switching Off the Modem Switching On the ModemOperation Operating States/LEDModem interface HC15 AT Command InterpreterApplication interface Safety instructions Safety and Product CareGeneral precautions SIM card precautionsRadio Frequency RF exposure and SAR Antenna precautionsPersonal Medical Devices Where to install the modem Installation of the ModemHow to install the modem Antenna Possible communications disturbances AC Power Adaptor AccessoriesDC cable Magnetic Dual Band Antenna 900/1800MHz FME F ConnectorPatch Adhesive Antenna Cables Matrix Electronica S.L Conformity AssessmentDirectives CBS CBMCSD DCEAT&D AT&CAT&F AT&VAT+CLCC AT+CIMIAT+CLCK AT+CLIPAT+CSMS AT+CSMPAT+CSQ AT+CSSNATS0 ATQATS10 ATS3Gsmsupport@matrix.es Sales Contact