PeakTech 1240 Operation Manual page 162

15. If the Trigger State Indicator at the top of the screen does not indicate Ready, push down the Run/Stop
button and start acquiring, waiting the emergence of the signal in conformity with the trigger conditions. If
a signal reaches to the set trigger level, one sampling will be made and then displayed in the screen. With
this function, any random occurrence can be captured easily. Taking the burst burr of larger amplitude for
example, set the trigger level to the value just greater than the normal signal level, and then presses the
Run/Stop button and waits. When there is a burr occurring, the instrument will trigger automatically and
record the waveform generated during the period around the trigger time. With the HORIZONTAL
POSITION knob in the horizontal control area in the panel rotated, you can change the horizontal position
of the trigger position to obtain the negative delay, making an easy observation of the waveform before
the burr occurs (see Fig. 81).
35.4. Example 4: Analyze the Details of a Signal
Observe the Signal Containing Noises
If the signal is interfered by the noise, the noise may cause a failure in the circuit. For the analyzing of the
noise in detail, please operate the instrument according to the following steps:
1. Press the Acquire button to display the Acquire menu.
2. Press the H1 button to display ACQU Mode menu.
3. Press the F2 button to choose Peak detect.
In this case, the screen display contains the waveform of a random noise. Especially when the time base is set
as Low Speed, then noise peak and burr contained in the signal can be observed with the peak detection (see
Fig. 82).
Fig. 81 Capture the Single Signal
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