User manual

Psion Teklogix 8525/8530 Vehicle-Mount Computer User Manual 99
Chapter 5: Configuration
Channel Tab
Channel Enable List
• Tap on the Channel Enable List button to display a dialog box listing
available channels.
Figure 5.32 Channel Enable Dialog Box
This dialog box is completed by default with all channels that have frequencies
configured. A checkmark indicates that a channel is enabled. An unchecked check
box indicates that the channel is disabled. The maximum number of channels
supported by the RA1001 Narrow Band radio is 20.
Enabling a channel allows the channel to be set to an operating channel (Channel
Number) and makes it available for channel searching. For example, if Channel 1 is
the operating channel and all other channels are enabled, the 8525/8530 can roam
through all 20 channels.
Channel Switch Speed
This parameter changes the threshold the 8525/8530 uses to determine when
communication quality with a base station is unacceptable. When this threshold is
exceeded, the unit starts channel searching for a new base station.
Setting this parameter to “Slow” means a higher threshold – the 8525/8530 is more
tolerant of poor communication quality. When the channel quality of the
vehicle-mount radio drops below 46%, the unit monitors the channel quality for 15
timeout periods before searching for a new channel. If Channel Switch Speed is set
to “Fast”, the current channel is only monitored for up to 2 time-out periods before
channel switching begins.