Operating instructions

University of Saskatchewan

Electrical Engineering Laboratory Equipment Manual

capacitance of  13 pF. Each input may tolerate an absolute maximum of 400 V. The

HPIB connector is found on the back left side of the scope.

The display of this scope conveys much information. At the top left side of the

screen you will find the channels that are on, as well as their volts/div setting and

coupling. For instance, 1 2.00V 2 P5.00V means that channel 1 is set to 2 V/div and is

dc coupled. Channel 2 is set to 5 V/div and is ac coupled.

In the top middle of the screen is an arrow and a time. That is the time that

corresponds to the middle of the screen in the current acquisition. Just to the right of it

you will find the current time/div setting. Somewhere along the top display line you will

find an upside down solid triangle. At the bottom of the screen you will find a right-side

up solid triangle immediately beneath it. These triangles denote the t = 0 point of the

acquisition.

In the top right corner of the display you will find information about the trigger

source, mode, and slope. Lastly, either RUN or STOP will be displayed to the right of

the triggering information, indicating whether the scope is actively acquiring data or has

stopped.

Along the right edge of the display you will see a channel number along with a

ground circuit symbol with an arrow pointing to the left. That indicates the ground (0 V)

position for that channel. If the ground position is off screen, then the channel number

and an arrow will be displayed at either the top or bottom of the screen to show where

the ground level is.

Channel Menus and Vertical Controls

Pressing either channel menu (1 or 2) brings up a list of items adjacent to the six softkeys

at the bottom of the display. These menu items are as follows:

 Channel off/on

 Coupling dc/ac/ground

 Bandwidth limit off/on

 Invert off/on

 Vernier off/on

 Probe 1/10/100

If you select ground coupling for a channel, that internally connects the input to ground.

If the bandwidth limitation is turned on, the channel is low-pass filtered with a cutoff of 20 MHz.

Invert does as you expect – inverts the waveform. When the Vernier is turned on, the volts/div

for that channel changes in fine steps. When it is off, it changes in coarse steps. Normally the

Vernier is left off.



VERTICAL

Volts / Div

Position

5 V

2 mV

5 V

2 mV