2 Basic Setup
Friday, May 25, 2018
5:37 AM
You will be asked to perform various and wide-ranging tasks with the DSO during the laboratories, so it is important that you become familiar with its capabilities and limitations.
Function Generator Setup
Turn the Mini-Lab on and set the function generator (FG) up for a sinusoidal wave of around 2 kHz. Set the amplitude to one quarter of the full range. Ensure the DC offset knob is set to ‘off’.
Turn the DSO on and ensure the DSO has been set to its default setup configuration, by pressing the Save/Recall key on the front panel, then press the Default Setup softkey under the display.
Observe the FG output using Channel 1 of the DSO.
Vertical Setup
Push the 1 button. In the Channel 1 Menu, select the BW Limit softkey to “bandwidth limit” the channel, i.e. to attenuate high frequencies, which is generally “noise”. Bandwidth limiting Channel 1 will help create a “stable trigger”. Note the illuminated “BW” next to the Position knob..
Turn the Volts/Div knob to 500 mV/div.
Set the FG so that the sinusoid is 3 V peak-to-peak.
Turn the Position knob and note the effect. Return the position to 0.0V.
In the Channel 1 Menu, press the Coupling softkey until AC is selected. Note the illuminated “AC” next to the Position knob. Use the Coupling softkey to reselect DC.
In the Channel 1 Menu, select the Invert softkey to “Invert” the channel. Note the status line shows that channel 1 is inverted (it has a bar over
 the 1).  Turn the “Invert” off.
Horizontal Setup
Turn the Time/Div knob and notice the change it makes to the status line.
Press Main/Delayed. Change the Time Ref softkey to see the effect (note the trigger point / time reference triangle beneath the status line moves to show the position of the time reference). Return the Time Ref to “Center”.
Use the softkeys to select different horizontal modes, and note the effect.
Restore the horizontal mode to Main and display two cycles of the sinusoid.
Turn the Delay knob to see the effect, and notice that its value is displayed in the status line. Reset the delay to 0.0s.
Trigger Setup
Turn the trigger Level knob and notice the changes it makes to the display. Note that when the trigger level is set to a value that exceeds the bounds of our input signal, we lose the ability to trigger because the input signal never reaches the trigger level. Use the value in the status line to return the trigger level to 0.0V.
Press Edge. Toggle each of the softkeys to see the effect and notice the change to the status line. Set the trigger to a positive edge on Channel 1.
Press Mode/Coupling. Toggle between the Modes to see the effect on the status line. Set the Mode to Auto Lvl.
Change the FG frequency to 3 kHz, then push the 10 Hz range button to obtain 3 Hz. Adjust the Time/Div knob to display two cycles of the sinusoid. Press Main/Delayed. Press the Roll softkey. Change the FG wave shape to triangle, then square, then back to sinusoid. Press the Single key. Press the Run-Stop key to trigger the DSO again.
Set the DSO to Main Horizontal Mode and Auto Lvl Trigger Mode.