EasyScopeIII for DS60M10 User Guide
Version 1.3
Document Reference No.: CP_000037 Clearance No.: CP#027
Copyright © Connective Peripherals Pte Ltd
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The user can then select options to trigger on a pulse of length greater than or less than the time
indicated by the horizontal slide bar. The value of the slide bar is displayed in the box above the slide bar
may be changed by clicking on and dragging the slider.
This triggering method can be an extremely useful tool for finding "glitches".
The Box that displays Pulse Width values is a read-only.
External Trigger
Forces the scope to wait on a level sensitive external trigger event. When this option is selected, the
High/Low button becomes visible as shown in the figure below.
This will cause the scope to trigger when the external trigger input signal is above or below the external
trigger level. Please note that this option uses the right hand BNC connector with the green LED.
The external trigger voltage is limited between -3.3V to 3.3V due to the Hardware.
Other Controls
Trigger Level Slider
Use the "Trigger Level" slider to set the desired trigger level voltage. The trigger level is shown as an
arrow with a "T" to the right of the oscilloscope screen and is displayed numerically beside the slider. The
colour of the "T" arrow matches the colour of the trace that has been selected as the trigger source. If
Ext trigger is selected, the "T" arrow colour is magenta.
Delay from Trigger
The Delay from Trigger option allows the data capture to be delayed from the trigger point by a specified
time by using the by using the Delay from Main Time Base slide bar.
The delay timer box that displays values is a read-only as shown in the figure below.
The delay range values are updated according to the time base settings.
3.3.6
AC/DC Coupling
AC/DC coupling is controlled by miniature relays inside the oscilloscope. To select AC or DC coupling click
on the AC/DC selector switch on each channel control panel. This will instruct the oscilloscope to change
the coupling from AC to DC or vice-versa for that channel.
DC coupling allows both DC and AC signals through, while AC coupling accepts only AC signals. If the
oscilloscope is AC coupled, then the DC portion of the waveform is blocked and only the AC portion is
displayed.
