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Chapter 12. Wireless Communication
12.1. Outline
12.1.1. Spread Spectrum Communications Method
Data communication is performed using TCP/IP protocol via a wireless module. Refer to item 13.2 for
details on communication program creation.
12.1.2. Configuration of Spread Spectrum System
The BHT communicates with the host computer via an access point in wireless communication.
For details, refer to the "BHT-700BB/700BWB/700BWBG-CE User's Manual" or "BHT-700QWBG-CE
User's Manual."
The table below shows the communications status transition as the state of the spread spectrum
communications device built in the BHT-700.
Spread spectrum communications device
Open (power on)
Checking synchronization with access point Impossible
Synchronization complete
Roaming
End of roaming
Close (power off)
If always being opened, the spread spectrum communications device will consume much power. When
the device is not in use, therefore, close it as soon as possible.
However, it will take several seconds to open the spread spectrum communications device and
synchronize it with the access point for making communications ready. Frequent opening and closing of
the device will require much time, resulting in slow response. Take into account the application purposes
of user programs when programming.
When the spread spectrum communications device is synchronized with the access point, the BHT will
display a synchronization icon on the LCD as shown below.
Communication
Impossible
Possible
Impossible
if the BHT is not synchronized with an access point
Possible
if synchronization with an access point is kept
Possible
Impossible
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