General Research of Electronics Inc 0716 用户手册

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Limit Search Object (LMIT)
A Limit Search Object (LMIT) is a search object that stores the 
parameters necessary for the radio to search each frequency 
within a lower and an upper limit for activity. A LMIT object can be
used for standalone searching – the radio just searches and 
stops when activity is detected on a frequency, or for searching 
that is performed while the radio is scanning. The radio treats 
LMIT objects just like any other Scannable Object when in Scan 
Mode. If you create a LMIT object, assign it to a Scan List and 
press the 
SCAN
 key, the radio will check for activity on all the 
Scannable Objects – TGRP objects, CONV objects, and even 
LMIT objects. An example of when this might be handy would be 
when you want to scan for activity on a collection of TGRP and 
CONV objects, then run through a range of frequencies to look 
for activity there, such as the entire 2 meter amateur radio band 
or the entire VHF marine radio band. When used in Scan Mode, 
this capability is best suited for small ranges of frequencies that 
contain more frequencies than practical to program as individual 
channels. Any size range can be used, but larger ranges that 
take more time to search will increase the chances of missed 
activity on other object types. 
Essential Limit Search parameters
Much like the other object types, there are only a few parameters
that are essential in order for a search range to function correctly.
The FrLO: and FrHi: lower and upper frequency limits must be
specified, so the scanner will know where to begin the search, 
and where to end the search and start again. The Mode: must 
be set properly, although by default the scanner will automatically
choose the receive mode that most likely applies to the active 
frequency as the search proceeds. And again, we recommend 
that you give the LMIT object a name in the Tag: field so that 
you can easily find or identify it later.
To create a new LMIT object, press 
PGM
 to place your scanner 
into Program Mode, then press the NEW softkey, then press the 
SRCH softkey to view the available Search types, then press the 
LMIT softkey. Use the data entry methods you have already 
learned for CONV and TGRP object setup to specify the FrLO:
and FrHi: limits, and provide a name for your search in the 
Tag: field. When finished, press the Save softkey to store your 
LMIT search as a new object.
Once your LMIT object is saved, you can use it while scanning, 
or launch the LMIT search by itself by pressing the SRCH softkey 
(note that we are referring to the SRCH softkey, and not the 
SRCH
0716 User Manual
Page 48