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Other Useful Information and Review
As covered in the procedure, but of such importance that its repeated again: The output must be
terminated by 50 Ω for voltages set on the AWG to be accurate. OR, for loads that are much
higher resistance than 50 Ω, you can use the Utility key, then Output Setup softkey, and Load
softkey to select High Z.
The Help function tells us that "Load Impedance / High Z / 50Ω Sets the value of the load
attached to the [Output] connector (used for voltage settings). The Agilent 33220A has a fixed
series output impedance of 50Ω, regardless of the value specified for the parameter. If the
actual load is different than the value specified, the displayed voltage levels will not match
voltage levels at the device under test."
To get context-sensitive help on any front panel key or softkey menu, press and hold down that
key.
You can even get pure DC (like a small power supply) using Utility and DC On. This "power
supply" will have a 50Ω output resistance, making its usefulness limited.
You can see a graph of your waveform with all its parts illustrated, in color, with the colors keyed
to the controls that adjust those parameters (e.g. for a Pulse waveform, the pulse width, edge
time, HiLevel, LoLevel, offset), by pressing the Graph hardkey.
Try using the Mod (modulation), Sweep, Burst, and Help hardkeys. Of course, for complete
and detailed information consult the Agilent User's Guide.
This instrument has a frequency range of 1 µHz to 20 MHz for most waveforms. Think about
the frequency of sunlight on the planet Earth: its period is one day. What is that, expressed as a
frequency in hertz? Can you think of how to design a circuit to have this generator provide
illumination to a plant, using an incandescent lamp, to simulate the period of earth's sunlight?
You may not have been the last person to use the AWG. When first turning the AWG on, be
sure to return the AWG to its "factory default values" by pressing the Store/Recall hardkey, then
the Set to Defaults softkey, and the YES softkey.
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