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28 Agilent E1441A Application Information
Chapter 2
previously specified as a storage location. For example, an error is generated
if you attempt to recall from memory location “2” but have never stored to
that location.
A +810, “State has not been stored” error is generated if nothing is stored
in the specified memory location.
Any arbitrary waveforms downloaded to “
VOLATILE” memory are not
remembered. However, if an arbitrary waveform is being output from
non-volatile memory when the state is stored, the waveform data is stored.
The stored waveform is output when the instrument state is recalled.
If you delete an arbitrary waveform after storing the state, the waveform data
is lost and the function generator will output the “
SINC” waveform in place
of the deleted waveform when the state is recalled.
Use the following commands to save and recall states:
*SAV 0|1|2|3
*RCL 0|1|2|3
You can delete individual stored states and clear the memory location. If
nothing is stored in the specified memory location, a +810, “State has not
been stored” error is generated. Do not delete state 0 or an error +772 will
be generated. See “772” on page 148.
MEMory:STATe:DELete 0|1|2|3
Amplitude
Modulation (AM)
A modulated waveform consists of a carrier waveform and a modulating
waveform. In
AM, the amplitude of the carrier is varied by the amplitude of
the modulating waveform. The function generator will accept an internal
modulating signal, an external modulating signal, or both. Topics covered
on amplitude modulation are:
• AM Carrier Waveform Shape
• AM Carrier Frequency
• Amplitude Modulating Waveform Shape
• Amplitude Modulating Waveform Frequency
• Amplitude Modulation Depth
• Amplitude Modulating Source
Only one modulation mode can be enabled at a time. When you enable
AM,
the previous modulation mode is turned off.
Use the following command to select AM modulation: To ensure proper
operation, you should enable
AM after you have set up the other modulation
parameters.
AM:STATe OFF|ON
AM Carrier Waveform
Shape
AM carrier shape: Sine, Square, Triangle, Ramp, or Arbitrary waveform.
The default is Sine.