3152B User Manual
Publication No. 980935 Rev. A
AM
The AM panel (Figure 4-15) contains parameters for controlling the
amplitude modulation function. To turn the AM function on and off,
click on the AM button in the State group. The various groups in the
AM panel are described below.
State
The State button turns on and off the AM function.
AM Parameters
This group contains parameters that allow complete control over the
AM function. These are:
CW Frequency –
The CW Frequency is the frequency of the carrier
waveform.
Baseline –
The Baseline parameter affects the output
characteristics in one of the interrupted run modes (i.e., triggered,
burst). In this case this parameter defines where the signal idles
between triggers. There are two options: CW and DC. The DC
option will set the idle state to a DC level, meaning that in between
triggers, the output resides on a DC level and generates modulation
when a trigger is accepted. The CW is similar except the signal
idles on the pre-trigger CW frequency setting, executes the
modulation upon receipt of a legal trigger signal and returns to
continuous CW frequency output.
Figure 4-15, AM Panel
Modulating Wave –
Defines the shape of the modulating
waveform. There are four built-in standard wave shapes: Sine,
Triangle, Square, or Ramp. These waveforms can be adjusted for
their frequency and deviation range. Click on the button next to the
required modulating waveform shape to select it. The modulating
waveform can be selected independently for each channel
Freq –
Programs the frequency of the modulating waveform. Note
that the frequency setting must be smaller than the CW frequency
4-22 ArbConnection
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