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54 Chapter 2
Basic Operation
Modulating a Signal
Figure 2-9 Example of AM Modulation Format Off and On
Applying a Modulation Format to the RF Output
The carrier signal is modulated when the Mod On/Off key is set to On, and an individual modulation
format is active.
When the
Mod On/Off key is set to Off, the MOD OFF annunciator appears on the display.When the key
is set to On, the MOD ON annunciator shows in the display, whether or not there is an active
modulation format. The annunciators simply indicate whether the carrier signal will be modulated
when a modulation format is turned on.
To Turn RF Output Modulation On
Press the
Mod On/Off key until the MOD ON annunciator appears in the display.
The carrier signal should be modulated with all active modulation formats. This is the factory default.
To Turn RF Output Modulation Off
Press the
Mod On/Off key until the MOD OFF annunciator appears in the display.
The carrier signal is no longer modulated or capable of being modulated when a modulation format
is active.
First AM Menu
Modulation format is off
Modulation format is on
Active Modulation Format Annunciator