Creating New Waveforms
Pressing the CREATE key calls the
CREATE NEW WAVEFORM
screen.
CREATE NEW WAVEFORM
free memory: 65536
◊
create blank…
◊
create from copy…
Create Blank Waveform
Pressing the
create blank…
soft-key calls the menu:
♦
create: “wv01 ”
◊
size: 01024
◊
cancel create
◊
The top line contains the user-defined waveform name which can be 8 characters long. The
instrument allocates a default name of wv(n) starting at wv1; 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; the default size is 1024. The minimum
size is 4 and the maximum 65536 (assuming no other arb waveforms have already been
created); appropriate warnings are given if attempts are made to set a waveform size less than 4
or greater than the remaining available memory.
This menu can be exited either by pressing the
cancel
soft-key which keeps the name but
does not allocate the memory space, or by pressing the
create
soft-key which builds a “blank”
waveform and directly calls the
MODIFY
screen to permit waveform editing.
Create Waveform Copy
Pressing the
create from copy…
soft-key calls the following menu:
♦
create: “wv01 ”
◊
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 soft-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, significant waveform
data may be lost, particularly from arb waveforms with narrow spikes if the compression ratio is
large.
The menu can be exited by pressing the
cancel
soft-key, which keeps the name but does not
implement the copy, or by pressing the
create
soft-key, which makes the copy and directly calls
the
MODIFY
screen to permit waveform editing.
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