Stanford Research Systems DS345, Manual

Page: 49 / 139

Arbitrary Waveform Editing
2-33
VECTOR EDIT EXAMPLE
The following is a step-by-step example of creating a vector format wave-
form. We will create a "heartbeat" waveform with 9 vertices. The vertices will
be (0,0), (50,200), (150,0), (175,-300), (225,2000), (275,-50), (425,225),
(500,0), (800,0). In the example [UNITS] refers to
any
UNITS key. To watch
the waveform grow, display the FUNCTION output on an oscilloscope. Trig-
ger the scope on the SYNC output. The waveform should look like the dia-
gram below when done.
(0,0)
(50,200)
(150,0)
(175,-300)
(225,2000)
(275,-50)
(425,225)
(500,0) (800,0)
Heartbeat Arbitrary Waveform
1) Press [FUNCTION DOWN ARROW] until ARB
LED is lit.
2) Press [SHIFT][ARB EDIT] three times to display
Arb clear line, then press any [UNITS] key.
3) Press [SHIFT][ARB EDIT] and use MODIFY
keys to set "Entry" to VECTOR.
4) Press [SHIFT][ARB EDIT] once.
5) Press [SHIFT][RIGHT ARROW] then [5][0]
[UNITS].
6) Press [STEP SIZE] then [2][0][0][UNITS].
7) Press [SHIFT][LEFT ARROW] then [MODIFY
UP ARROW].
8) Press [SHIFT][RIGHT ARROW], [0][UNITS],
[STEP SIZE], and [1][5][0][UNITS].
9) Press [SHIFT][LEFT ARROW], [MODIFY UP
ARROW], [SHIFT][RIGHT ARROW], [1][7][5]
[UNITS].
10) Press [STEP SIZE], then [-][3][0][0][UNITS].
Set output function to ARB.
Set vector entry mode if necessary.
Clear arb function. The message "arb cleared" will
be displayed.
Display edit line. It should read "00000 ------".
Vertex number 0 (the first vertex) has no data.
Activate x value and set to 50. We will let the
DS345 add the 0,0 vertex automatically.
Switch to y value and set to 200.
Select vertex number and increment to vertex #1.
Select y value and set to 0, then select x value
and set to 150.
Select vertex # and increment to 2, then select x
value and set to 175.
Select y value and set to -300.