Specifications

Chapter 17. Spread Spectrum Communication (For models equipped with a spread spectrum wireless block)
419
The table below shows the communications status transition as the state of the spread spec-
trum communications device built in the BHT changes.
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 master for making communications ready. Frequent opening and clos-
ing of the device will require much time, resulting in slow response. Take into account the appli-
cation purposes of user programs when programming.
When the spread spectrum communications device is synchronized with the master, the BHT
will display a synchronization icon on the LCD as shown below.
Spread spectrum
communications device
Communication
Open (power on) Impossible
Checking synchronization with
master
Impossible
Synchronization complete Possible
Roaming Impossible if roaming leads to the loss of synchronization
Possible if synchronization with the master is kept
End of roaming Possible
Close (power off) Impossible
A synchronization icon will appear
if the spread spectrum communications
device is synchronized with the master.