Denso BHT-7500S User Manual

Also see for BHT-7500: Manual 

Contents

Denso BHT-7500S User Manual Manual pdf 144 page image

1243.1 Spread-Spectrum Communication(BHT-7500S/7500W only)3.1.1 Notes for Wireless Operations• If there are too many communications errors, first make sure that the BHT pointsdirectly at an access point because the 2.4-GHz band requires a more or lessstraight line path. Note also that the low-power radio waves have trouble passingthrough human bodies and other obstacles along that path.• The radio link will not operate properly in the vicinity of microwave ovens, industrialheaters, high-frequency medical equipment, and other sources of radio waves inthe 2.4-GHz band.• Electromagnetic noise from personal computers, refrigerators, and other homeappliances can also interfere with link operation.• Environmental factors that can also interfere with link operation include largemetallic objects, metallic dust, or metallic walls in the vicinity of the path andvibration at either end.To System Designers:• Before developing the application, make sure that the intended environment is freeof the interference factors above and thus actually capable of supporting linkoperation.• Assume that there will be communications failures requiring robust retrycapabilities in the software.3.1.2 RF-Related ParametersPrograms written in BHT-BASIC control wireless communication with commands be-tween the BHT terminals and access points which are connected each other by awireless LAN.BHT-7500SFor the setting procedure of RF-related parameters, refer to Subsection 2.5.3, "[ 8 ] RFMenu BHT-7500S."■ DomainsIt is necessary to group a wireless LAN into domains and assign them with uniquedomain names. A domain name should be included in the IDs of access points.You may roam between access points during wireless communication if those accesspoints are within wireless networks having a same domain name.For the setting procedure of domain names, refer to Subsection 2.5.3, [ 8 ] RF Menu.