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View Personality - Enables or disables the left pane in
the main part of the screen which displays the current
programming information in a Locality, Bank, or
System hierarchy (see Section 3.3.4).
3.9 COMPORTS MENU
The ComPorts menu is shown above, and it is
used to select which computer serial port is used by
the RPI (see Section 3.1.3). The default is COM 1. If
another port is used, select it using this function. The
new port then becomes the default port, so this func-
tion only needs to be used when the port is changed.
3.10 HELP MENU
Displays help information on the program. Most
screens also have a Help button that can be clicked to
display help on that screen.
3.11 ADDITIONAL PROGRAMMING
INFORMATION
3.11.1 PROGRAM KEY
An eight-character Programming Key can be
entered in the Basic Parameters screen (see Section
3.6.3) to prevent unauthorized reading of transceiver
data. If a transceiver is programmed with a data file
containing a key in this location, the programming
data cannot be read from that transceiver unless the
same key is entered.
Any keyboard character can be used when
entering this key (including spaces), and letter case is
considered. For example, entering "A" instead of "a"
that was programmed results in an invalid entry. Char-
acters entered are displayed as asterisks (****). A key
must be re-entered in the Verify box to be accepted.
To disable this feature so that no key is required
to read data from the transceiver, do not enter any
characters in the Pgm Key box, or if there already is a
code in this box, delete all characters. Then program
the transceiver with the data file. If the key is lost,
contact Customer Service as described in Section 1.7
for information on how this feature can be overridden.
3.11.2 MULTIPLE HOME REPEATERS
Systems linked to the same locality should not be
programmed with different home repeaters as missed
calls may result. With LTR-Net and LTR operation,
each home repeater transmits incoming call informa-
tion only for its mobiles and not for all mobiles
assigned to the locality. Therefore, calls on another
home repeater are not received while monitoring some
other home repeater. In addition, calls will be delayed
and access collisions will occur more often.
If this type of system is necessary, select the LTR-
Net Multiple Home type of locality. This forces the
radio to monitor the status repeater instead of the
home repeater. Since the status repeater transmits
incoming call information for all home repeaters
assigned to a locality, this ensures that calls are not
missed. However, there is then no backup for that
repeater (see Section 6.6).
3.11.3 CHANNEL NUMBER PROGRAMMING
In the UHF band, the channel frequencies are
always entered and channel numbers are not used.
Therefore, the "channel" display mode is not select-
able on the locality screen.
Be sure to enter the repeater frequency and not
the mobile frequency. The bandwidth of 12.5 or 25
kHz is also specified with UHF channels. The
frequency band is selected in the Radio Type screen
before any localities are programmed (see Section
3.6.2).
3.11.4 REPEATER NUMBERING
With LTR-Net and LTR repeaters, the repeaters at
a locality are assigned a unique number from 1-20.
Although these numbers can be assigned arbitrarily,
for maximum system efficiency, a scheme should be
used which equalizes, as much as possible, the gaps
3-13
PROGRAMMING
April 2001
Part No. 001-7240-001
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