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Using the Equipment
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Customizing the Tuner
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Scanning (Advanced)
The following controls are available in the Advanced Controls tab, they allow the
user to scan across the tuners range in a more targeted way, this will reduce scan-
time but should only be used if the operator has knowledge of the current band plan.
•
3-114
Use custom mode and guard – This allows the user to set manual custom
modes and guards, if they are known this will reduce tuning time.
Custom mode – This allows the user to select the number of carriers used
within the spectrum (if known). This can be either 2K or 8K. If this information is
not known it is recommended that tuning mode is set to automatic.
Custom guard – This allows the user to set up a pre-determined guard interval
(if known). If this information is not known, it is recommended that tuning mode
is set to "Automatic". This can have the values:
-
1/32
-
1/16
-
1/8
-
1/4
IF_Notch – Provides additional robustness against the sound carrier of the
adjacent analogue channel. This can have the values:
-
Off
-
On
LP_Fc_Offset – Sets the offset to Low Pass Filter cut-off frequency providing
further adjacent channel rejection. This can have the values:
-
0
-
-4%
-
-8%
IF_HP_Fc – Sets the cut-off frequency of the intermediate frequency filter. It
provides additional robustness against adjacent (n+1th) channel. This can have
the values:
-
0.4 MHz
-
0.85 MHz
-
1 MHz
-
1.5 MHz
Starting Frequency – This defines the starting center frequency for any scan
operation.
EN/LZT 790 0005 R7A
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