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Press the Menu button. Scroll down to the Trig Level option and press Enter. TRIG is
displayed with the current trigger level alongside the waveform display. Use the up
and down arrow buttons to increase and decrease the trigger level until the desired
value is shown, or until the waveform triggers. Press Enter to exit the trigger level
setting function.
Trigger Slope
Press the Menu button. Scroll down to the Trig Slope option and press Enter. Use
the up and down arrow buttons to switch between positive (rising edge) and negative
(falling edge) slope. Press Enter to leave the trigger slope setting function.
Trigger Mode
Press the Menu button. Scroll down to the Trig Mode option and press Enter. Use
the up and down arrow buttons to select between Auto, Normal and Manual.
The trigger mode is shown at the top centre of the waveform display.
In
Auto
mode, if no valid trigger occurs after a period of time, the display will show
whatever signal is currently being seen and the words ‘No trig’ are shown at the top
of the display. If regular pulses are detected and the trigger level is set correctly, the
display will lock onto the pulse and the word ‘Trig’ is shown at the top of the display.
When the timebase is set to a slow setting it may take a short while to collect the
data and display it, and ‘wait’ is shown at the top of the screen while the data is
being collected prior to display.
In
Normal
mode, if no valid triggers occur no waveform is displayed and ‘No trig’ is
shown at the top of the display. Once the meter has triggered and displayed a
waveform, the captured waveform is kept on the display until the next trigger occurs.
This gives the user the ability to see and measure short pulses that might occur
infrequently.
In
Manual
Mode, a waveform is only displayed when the ACQUIRE button is
pressed, see ‘Start Acquisition’.
