Stanford Research Systems DS345, Manual

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Arbitrary Waveform Composer
7-2
4) Enter 1000. Any number of points between 8 and 16300 may be entered.
AWC will ask for the number of complete periods in the waveform.
5) Enter 10.
Ten complete sine periods in the 1000 points. AWC will now ask
for the amplitude of the waveform.
6) Enter 10.
The amplitude will be 10 Vpp. After a brief calculation AWC will
draw the waveform on the screen. The display should show 10
sine periods along with new axis labels. The screen shows the
Peak-to-Peak amplitude of the waveform in Volts, the minimum
and maximum voltages of the waveform, and the current file
name. The vertical scale is calculated automatically. The
horizontal scale has units of waveform points. The numbers Min
and Max in the corners of the screen are the minimum and
maximum point number being displayed, these units correspond
to the RAM addresses in the DS345's waveform memory. The
total number of points displayed is listed, as are the total number
of points in the waveform.
7) Select the
Edit menu We are going to edit this waveform. We want to invert it and then
multiply by an exponential damping factor.
8) Select
Mirror The waveform will be mirrored (inverted).
9) Select the
Waveform menu
10) Select math
Math allows mathematical operations on the waveform. Make sure
that there is a check mark in the Exp box and that multiply is
selected.
11) Select
multiply , and Exp We will multiply by an exponential damping.
12) Click
Okay . The choices are ok. AWC will ask for the damping factor.
13) Enter -4.
The sine wave will be damped by exp(-4) at its endpoint. After a
brief calculation AWC will draw the new waveform.
14) DONE !
Throughout this example the Send Data and Trigger menus were disabled.
This is because the communications parameters have not been set. Select the
RS232/GPIB submenu from the Set DS345 menu to set the communication
parameters according to your specific hardware configuration. See the Set
DS345 menu description for more information on establishing communication
with the DS345. Once communication is established use these menu
selections to send the data to the DS345.