Product Manual

Arbitrary Waveform Generation
Creating New Waveforms 9
create: "wv00 "
size: 01024
cancel create
The top line contains the user-defined waveform name which can be up to 8 characters
long. The instrument allocates a default name of
wv(n) starting at wv00; the name
can be edited by selecting the appropriate character position with the cursor keys and then
setting the character with the rotary control which scrolls through all alphanumeric
characters in sequence.
Pressing the
size soft-key permits the waveform length to be entered directly from the
keyboard or by using the rotary control and cursor keys. 1024 points is the default size
and the range is from 4 to 65,536 points. Screen messages will tell you if you have
attempted to set values less than 4 or greater than the remaining available backup
memory. The waveform ‘blank’ is created in the non-volatile backup memory and the
free memory
field shows the remaining unused backup memory.
The
cancel soft key causes the name to be kept without any allocation of memory
space. Pressing the
create soft key allocates both the name and the memory, and
calls the
MODIFY screen to permit waveform editing.
Create Waveform Copy
Pressing the create from copy… soft-key calls the following menu:
create: "wv00 "
from: sine
size: 01024
cancel create
The user-defined name and waveform size can be entered after pressing the
create
and size soft-keys respectively, exactly as described in the previous section.
The source waveform which is to be copied can be selected by the
from soft key;
repeated presses of the key, cursor keys or using the rotary control will scroll through the
list of all the available waveforms, including any other arbitrary waveforms already
created.
The horizontal size of the waveform being copied does not have to be the same as the
waveform being created. When the waveform is copied by pressing the
create key,
the software compresses or expands the source waveform to create the copy. When the
source is expanded the copy has additional interpolated points; when the source is
compressed it is possible to lose significant waveform, particularly from arb waveforms
with narrow spikes if the compression ratio is large.
The
cancel soft key causes the name to be kept without any allocation of memory
space. Pressing the
create soft key allocates both the name and the memory, and
calls the
MODIFY screen to permit waveform editing.
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