Operating instructions

University of Saskatchewan
Electrical Engineering Laboratory Equipment Manual
The horizontal menu button brings up the following items:
 Main / Window Zone / Window
 Trigger knob level / holdoff
The ―Main‖ horizontal mode is the standard volts vs. time oscilloscope display mode.
When the ―Window Zone‖ mode is selected, two vertical cursors are displayed on the screen.
They define a window that you can use to zoom in on a feature of the waveform(s) being
examined. You control the position and size of the window with the horizontal position and
time/div knobs. Once you have set the window to your liking, select the ―Window‖ mode to
display only the data within the window on the full screen. Beneath the display, the window’s
time/div is displayed, preceded by a W. To return to the normal display, select the ―Main‖ mode
once again.
The last menu item switches the
functionality of the trigger level/holdoff knob. It
may be switched to control either the trigger level
or the trigger holdoff. Normally this should be left
set to level.
Trigger Controls
As just explained above, the trigger level/holdoff knob controls either the trigger level
(threshold) or trigger holdoff time, depending on its setting in the horizontal menu. Pressing the
trigger menu button brings up the following items:
 Edge/Video
 Slope rising/falling
 Source channel 1/2, external,
external/5, AC line
 Mode auto/normal/single
 Coupling ac/dc/noise reject/HF
reject/LF reject
For normal operation, leave the scope in Edge trigger format. Most items are self-
explanatory, or are similar to trigger options of the HP scopes, which have already been
explained.
As with the other scopes, a channel does not have to be on in order to be a valid trigger
source. When the trigger source is set to ―Ext‖, a valid trigger signal must be connected to the
EXT TRIG input on the scope.
VERTICAL
HORIZONTAL TRIGGER
POSITION
POSITION
LEVEL
HORIZONTAL
MATH
CH 1 CH 2
TRIGGER
SET LEVEL TO 50%
FORCE TRIGGER
TRIGGER VIEW
POSITION
HOLDOFF
MENU
MENU
MENU
MENU
MENU
VOLTS/DIV VOLTS/DIV SEC/DIV
5V
2mV
5V
2mV
5s
5ns
CURSOR 1 CURSOR 2
VERTICAL
HORIZONTAL TRIGGER
POSITION
POSITION
LEVEL
HORIZONTAL
MATH
CH 1 CH 2
TRIGGER
SET LEVEL TO 50%
FORCE TRIGGER
TRIGGER VIEW
POSITION
HOLDOFF
MENU
MENU
MENU
MENU
MENU
VOLTS/DIV VOLTS/DIV SEC/DIV
5V
2mV
5V
2mV
5s
5ns
CURSOR 1 CURSOR 2