Denso BHT-7500S Manual do Utilizador descarregar pdf (Página 144)

124

3.1 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 points

directly at an access point because the 2.4-GHz band requires a more or less

straight line path. Note also that the low-power radio waves have trouble passing

through human bodies and other obstacles along that path.

• The radio link will not operate properly in the vicinity of microwave ovens, industrial

heaters, high-frequency medical equipment, and other sources of radio waves in

the 2.4-GHz band.

• Electromagnetic noise from personal computers, refrigerators, and other home

appliances can also interfere with link operation.

• Environmental factors that can also interfere with link operation include large

metallic objects, metallic dust, or metallic walls in the vicinity of the path and

vibration at either end.

To System Designers:

• Before developing the application, make sure that the intended environment is free

of the interference factors above and thus actually capable of supporting link

operation.

•Assume that there will be communications failures requiring robust retry

capabilities in the software.

3.1.2 RF-Related Parameters

Programs written in BHT-BASIC control wireless communication with commands be-

tween the BHT terminals and access points which are connected each other by a

wireless LAN.

BHT-7500S

For the setting procedure of RF-related parameters, refer to Subsection 2.5.3, "[ 8 ] RF

BHT-7500S."

■ Domains

It is necessary to group a wireless LAN into domains and assign them with unique

domain names. A domain name should be included in the IDs of access points.

You may roam between access points during wireless communication if those access

points 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.

1 2 ... 139 140 141 142 143 144 145 146 147 148 149 ... 216 217

Sem comentários

Denso BHT-7500S Manual do Utilizador Página 144