PeakTech 1295 Bedienungsanleitung Seite 125

Auto
Normal
Mode
Single
Holdoff
Holdoff
Reset
Term interpretation
1. Source: Trigger can occur from several sources: Input channels (CH1～
CH4), AC Line.
 Input: It is the most commonly used trigger source. The channel will work
when selected as a trigger source whatever displayed or not.
 AC Line: AC power can be used to display signals related to the power line
frequency, such as lighting equipment and power supply devices. The
oscilloscope gets triggered on its power cord, so you do not have to input an
AC trigger signal. When AC Line is selected as trigger source, the
oscilloscope automatically set coupling to DC, set trigger level to 0V.
2. Trigger Mode:
The trigger mode determines how the oscilloscope behaves in the absence of
a trigger event. The oscilloscope provides three trigger modes: Auto, Normal,
and Single.
 Auto: This sweep mode allows the oscilloscope to acquire waveforms even
when it does not detect a trigger condition. If no trigger condition occurs
while the oscilloscope is waiting for a specific period (as determined by the
time-base setting), it will force itself to trigger.
 Normal: The Normal mode allows the oscilloscope to acquire a waveform
only when it is triggered. If no trigger occurs, the oscilloscope keeps waiting,
and the previous waveform, if any, will remain on the display. Single: In
Single mode, after pressing the Run/Stop key, the oscilloscope waits for
trigger. While the trigger occurs, the oscilloscope acquires one waveform
then stop.
 Single: In Single mode, after pressing the Run/Stop key, the oscilloscope
waits for trigger. While the trigger occurs, the oscilloscope acquires one
waveform then stop.
3. Coupling:
Trigger coupling determines what part of the signal passes to the trigger circuit.
Coupling types include AC, DC, LF Reject and HF Reject.
 AC: AC coupling blocks DC components.
 DC: DC coupling passes both AC and DC components.
 LF Reject: LF Reject coupling blocks DC component, and attenuates all
signal with a frequency lower than 8 kHz.
 HF Reject: HF Reject coupling attenuates all signals with a frequency
higher than 150 kHz.
Acquire waveform even no trigger occurred
Acquire waveform when trigger occurred
When trigger occurs, acquire one waveform then stop
100ns ~ 10s, turn the G knob to set time interval before
another trigger occur.
Set Holdoff time as 100ns
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