User manual

Publication No. 980935 Rev. M 3152B User Manual
Astronics Test Systems ArbConnection 4-23
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
for the AM function to operate correctly. Not
e that the modulating
frequency setting is common to both channels.
Depth –
The Depth parameter programs the modulation depth, or
index in percent of the un-
modulated CW amplitude. The depth is
symmetrical about the center of the CW amplitude. Each channel
can have a unique setting of the modulation depth.
To access the required parameter, click on the parameter name
and observe that the LED next to the required parameter turns on.
The value that is associated with the lit LED is displayed on the
digital display. You can use the dial, keyboard, or the [↑] [↓} keys to
adjust the readout to the required setting. After you modify the
reading, click on the Modify/Execute knob to update the 3152B with
the new setting.
Sweep
The Sweep Modulation panel (Figure 4-16) contains parameters for
controlling the sweep function. To turn the sweep function on and
off, click on the Sweep button in the State group. The various
groups in the sweep panel are described below.
State
The State button turns on and off the Sweep function.
Sweep Parameters
This group contains parameters that allow complete control over the