5-5
Hardkey and Softkey Reference
AM
AM Off On
This softkey enables the amplitude modulation for whichever AM path
configuration (
AM Path 1 or AM Path 2) you have selected. Notice, however, that
although you can enable amplitude modulation with this softkey, the RF carrier is
modulated by the enabled modulation only when you have also set
Mod On/Off to
On. Whenever amplitude modulation is enabled, the AM annunciator is turned on
in the display.
There are two paths for AM modulation which can be simultaneously enabled as
long as they use different sources (Int, Ext1, or Ext2). The modulation signals
from both paths are summed internally for composite modulation.
Softkey Location: Press
AM, AM Off On
Status after Normal Preset: Off
SCPI Commands:
[:SOURce]:AM[1]|2:STATe ON|OFF|1|0
[:SOURce]:AM[1]|2:STATe?
AM Path 1 2
Use AM Path 1 and AM Path 2 to define two unique amplitude modulation
configurations. For example, select
AM Path 1. (AM Path 1 is the default after a
normal preset. If
AM Path 1 is not highlighted, press the AM Path 1 2 softkey until
the selection toggles to
AM Path 1.) Configure the modulation characteristics (such
as depth, source, rate, and waveform) using the remaining softkeys in the AM
menu. Then enable AM by setting
AM Off On to On.
To configure a second amplitude modulation configuration, toggle to
AM Path 2.
Define the modulation characteristics for this second configuration and enable
AM by setting
AM Off On to On.
The RF carrier is available at the RF OUTPUT connector when you set
RF On/Off
to
On. Set Mod On/Off to On to modulate the RF carrier with the modulations that
you have enabled.
AM Path 1 and AM Path 2 are summed internally for composite modulation. Either
path can be switched to any one of the modulation sources: Int, Ext1, or Ext2. All
modulation types can be simultaneously enabled, except FM with
ΦM. AM, FM,
and
ΦM can sum simultaneous inputs from any two sources (Int, Ext1, and Ext2).
Any given source (Int, Ext1, or Ext2) can only be routed to one activated
modulation type.
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