3-124 Customer Programming Software (CPS)
6866537D87-F Chapter 3 - MTM800 Product Information Manual September 2008
Lists 3 & 4 allow flexibility in the comprehensive hunt, both have the same options but the field
values should be different to allow for the different system frequencies.
29.1.3.1 First Frequency to Scan
This might appear to be a straight forward entry of the base frequency of the system(s), but the
terminal checks frequencies in 25kHz steps and systems may be using 25kHz, 12.5kHz or 6.25kHz
offsets. In the above picture the base frequency has a 12.5kHz offset.
29.1.3.2 Number of Frequencies
The entry in this field defines how many frequencies, upwards from the base frequency, the terminal
will check.
As shown above, the terminal will check 399 frequencies and as there is a step size of 25kHz, all
frequencies from 420.01250MHz to 429.975MHz inclusive will be checked.
29.1.4 Frequency List 4
It may not be necessary to use this list, in which case ensure there are no entries in the field values.
Using both tables adds flexibility to the comprehensive hunt if it is required for multiple system
access that use different frequencies offsets. In the above picture the base frequency has a 6.25kHz
offset and the frequencies scanned will be from 420.00625MHz to 429.98125MHz inclusive.
Note: It is more likely that lists 3 & 4 will have 25kHz and 12.5kHz offsets.
Comprehensive Hunt - is used when the terminal cannot log on to a system using the frequencies
in lists 1 & 2. The terminal will search a predefined number (block) of frequencies in List 3, then
check the frequencies in lists 1 & 2 before returning to List 3 and searching the next block of
frequencies. This procedure is repeated until the frequencies of both lists 3 & 4 have been checked.
The terminal will repeat this procedure until a system is found on which it can register.
29.2 Home Location Areas
These two has two options that define the system cells to which the terminal may roam and operate.
To Next Page
Loading...
