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switches. Also displayed is the UHF television channel to which the selected
frequency belongs.
In XMIT mode, it is not possible to change the operating frequency.
In TUNE mode, the Up and Down buttons may be used to select a new fre-
quency.
If the TUNING mode is set to NORMAL, the Up and Down buttons navigate in
single channel increments, and MENU+Up and MENU+Down move 16 chan-
nels at a time. In any of the various group tuning modes, the currently selected
group identifier is displayed to the left of the hex code, and the Up and Down
buttons navigate among the frequencies in the group. In factory group tuning
modes A thru D, MENU+Up and MENU+Down jump to the highest and lowest
frequencies in the group. In user group tuning modes U and V, MENU+Up and
MENU+Down permit access to frequencies not currently in the group.
Pressing and holding the Up or Down button invokes an autorepeat function, for
faster tuning.
Audio Input Gain Window
Pressing the MENU button once from the Frequency window navigates to the
Audio Input Gain window. This window greatly resembles the Main window, with
the exception that the current audio input gain setting is displayed in the upper left
corner. The Up and Down buttons may be used to alter the setting while reading
the realtime audio meter to determine what setting works best.
The gain range is -18 dB to +24 dB with 0 dB as nominal. The reference for this
control can be changed with the rear panel MODE switches. See page 7 for
more information on the MODE switches.
Setup Window
Pressing the MENU button once from the Audio Input Gain window navigates
to the Setup window. This window contains a menu which permits access to
various setup screens.
Initially the active menu item is EXIT. Pressing the Up and Down keys permits
navigation among the remaining menu items: TUNING, COMPAT and ROL-
LOFF.
Pressing the MENU button selects the current menu item. Selecting EXIT navi-
gates back to the Main window. Selecting any other item navigates to the associ-
ated setup screen.
ROLLOFF Setup Screen
The ROLLOFF setup screen controls the low frequency audio response of the
IFBT4. The 50 Hz setting is the default, and should be used whenever wind
noise, HVAC rumble, traffic noise or other low frequency sounds may degrade
the quality of the audio. The 35 Hz setting may be used in the absence of
adverse conditions, for a fuller bass response.
Press MENU to return to the Setup window.
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