Instructions

Digital Storage Oscilloscope 25
video signal trigger.
1. Press the [Trig Menu] button on the front panel to enter the Trigger function menu.
2. Press the Type softkey, then turn the Universal Knob to select Video and push
down the knob to confirm.
3. Press the Source softkey turn the Universal Knob to select CH1~CH4 as the trigger
source.
4. Press the Standard softkey to select the desired video standard. The series of
scope support the following video standards: PAL and NTSC.
2.7.4 Slope Trigger
The slope trigger looks for a rising or falling transition from one level to another level in
the specified time range. In the series of scope, positive slope time is defined as the
time difference between the two crossing points of trigger level line A and B with the
positive edge as shown in the figure below.
1. Press the [Trig Menu] button on the front panel to enter the Trigger function menu.
2. Press the Type softkey, turn the Universal Knob to set select Slop and then push
the knob to confirm.
3. Press the Source softkey, turn the Universal Knob to select CH1~CH4 as the trigger
source.
4. Press the Slop softkey, turn the Universal Knob to set select the desired trigger
edge (rising or falling), and then push down the knob to confirm.
5. Press the Level softkey and press of Lower Upper softkey to select Lower or Upper
the trigger level; then turn the Trigger Level Knob to adjust the position. The trigger
level values are displayed at the upper right corner of the screen.
6. Press the When softkey, then turn the Universal Knob to select the desired slope
condition, and push down the knob to confirm.
 < (less than a time value): trigger when the positive or negative slope time of