Motorola XPR 5550 用户手册

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页码 118
Identifying Radio Controls
English
8
To use the Scroll Up/Down buttons, while in the Home 
Screen of the required Zone, press 
f
 or 
h
 to select 
the required channel. 
To use the programmed Channel Up or Channel 
Down
 buttons, while in the Home Screen of the 
required Zone, press Channel Up or Channel Down 
to select the required channel. 
Using the Volume/Channel Knob
The Volume/Channel Knob can be programmed as dual 
purpose for both volume and channel or as a volume-only 
control. 
To adjust volume, see Adjusting the Volume on page 2.
To change channels, push and hold the knob until channel 
selection screen is displayed, then turn the knob to the required 
channel. 
To exit channel selection state, do any of the following.
Push the Volume/Channel Knob again
Press 
g
 
Press 
e
Wait for the menu timer to expire 
IP Site Connect 
This feature allows your radio to extend conventional 
communication beyond the reach of a single site, by connecting 
to different available sites which are connected via an Internet 
Protocol (IP) network.
When the radio moves out of range from one site and into the 
range of another, it connects to the new site's repeater to send 
or receive calls/data transmissions. Depending on your settings, 
this is done automatically or manually.
If the radio is set to do this automatically, it scans through all 
available sites when the signal from the current site is weak or 
when the radio is unable to detect any signal from the current 
site. It then locks on to the repeater with the strongest Received 
Signal Strength Indicator (RSSI) value.
In a manual site search, the radio searches for the next site in 
the roam list that is currently in range (but which may not have 
the strongest signal) and locks on to it.
NOTE: Each channel can only have either Scan or Roam 
enabled, not both at the same time.
Channels with this feature enabled can be added to a particular 
roam list. The radio searches the channel(s) in the roam list 
during the automatic roam operation to locate the best site.
A roam list supports a maximum of 16 channels (including the 
Selected Channel).