AES uScope Manual
www.AESwave.com
Copyright 2011 by Automotive Electronics Services, Inc.
Page 6
9. To see more of the signal or less of the signal:
a. Use the
UP | DOWN
arrow keys and highlight the
“.
T
”
(Time Settings) menu item.
b. Press
“
OK
”
and the menu will open
c. Use the
UP | DOWN
arrow keys and highlight
“
T/Div
”
d. Use the
RIGHT
arrow key to go to a faster time setting showing less time of the signal but
in greater detail
– like a magnifying glass. For example, see one injector pulse instead of
three.
e. Use the
LEFT
arrow key to go to a slower time setting showing more time of the signal
but in less detail. For example, display three injector pulses instead of one.
f.
Press
“
OK
”
to exit the menu
10. To stablize the signal:
a. Some signals can not be stablized. For example, a square wave that has a unique ID
such as a crank sensor. Other signals are easy to stabalize. In either case follow these
procedures:
b. Use the
UP | DOWN
arrow keys and highlight the
“
Tr
”
(Trigger Settings) menu item.
c. Press
“
OK
”
and the menu will open.
d. Use the
UP | DOWN
arrow keys to highlight the
“
Tr”
Level (Trigger voltage level) Menu
item.
e. Use the
LEFT | RIGHT
arrow keys to set the trigger level. The
LEFT
arrow key moves
the trigger level down and the
RIGHT
key moves the trigger level up. Note: the Yellow
dotted horizontall line in the display indicating the selected level.
f.
Note: When
“
Tr
”
level menu item is selected, The numerical value of the Trigger will be
displayed on the top right of the screen.
g. A good technique for beginners is to move the
Yellow Dotted line
level indicator above
the signal. Then move it down and note the changes in the display of the waveform.
i. Rules of thumb:
1. For repetitive signals that do not have a unique spike that reaches above
or below the repetitive portion of the signal, such as a square wave, just
place the trigger level within the center 1/3 of the signal. Leave the
TRIGGER MODE
on
AUTO
or
NORM.
2. For signals that do have a unique charactoristic such as an injector or
ignition place the TRIGGER LEVEL along a unique portion of the signal
such as the rising edge of the spike or a falling edge use
TRIGGER
MODE
on
NORM
to stabalize. One more helpful adjustment is to set the
TRIGGER SLOPE
to positive or negative. (In the
“
TR
”
menu highlight
“
TR
.
”
SLOPE
and use the
LEFT | RIGHT
arrow key to set the
SLOPE
.