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Using the Source Functions 3
Configuring Constant-Dwell Arbs
Constant-Dwell (CD)Arbs are a unique type of Arb that have some
useful differences from other types. CD Arbs are not limited to 511
points, they can contain up to 65,535 points. Unlike other Arbs, they
do not have separate dwell values associated with each point; a single
dwell value applies to every point in the CD Arb. Also, the minimum
dwell time of a CD Arb is 10 .24 microseconds, instead of the 1
microsecond resolution of the other Arbs.
A CD Arb can run along with other Arbs on other outputs. If multiple
outputs run a CD Arb, all CD Arbs must have the same dwell time. If
a repeat count is specified, all CD Arbs must have the same length
and repeat count.
Because the CD Arbs can have such a large number of points, you
cannot define the individual voltage or current values from the front
panel. Instead, the CD Arb data must be imported into the
instrument from a file. This is explained later in this chapter under
"Importing and Exporting User-Defined and Constant-Dwell Arb
Data".
Step 1 – Select a voltage or current Constant-dwell Arb:
Press the Arb key twice or press the Arb key and then Properties to
access the Arb Selection window.
In the Arb Type dropdown menu, select either a Voltage or Current
Arb type. Navigate to and select the Constant-Dwell output type.
Step 2 – Configure the Constant-dwell properties:
To configure the parameters of the Constant-dwell waveform, press
the Properties key or select the Arb Properties button.
Use the Import button to import a previously created CD Arb.
Conversely, use the Export button to export the CD-Arb to a file.
Once the file has been imported the Arb Properties window will
displays the following information about the Arb: minimum value,
maximum value, average value, length in points, and the total time.
You can change the dwell per step of the Arb after it has been
imported. When an Arb file is imported, the dwell time specified in
the file will be entered in the Dwell per step field.
Model N6705 User's Guide
81
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