PeakTech 1145 Bedienungsanleitung Seite 60

1) Type (Edge/TV): Edge
Use edge triggering to trigger on the edge of the input signal at the trigger threshold.
Coupling(AC/DC/HF Reject/LF Reject) :
This function decides which part of the signal is transferred to the trigger circuit. That is, desired coupling type is
selected between trigger source signal and trigger circuit by this switch. When coupling switch is pressed, AC, DC, HF
Reject and LF Reject are displayed in sequence.
AC :
Only AC component is passed through in the signal and DC component Is removed from the trigger signal.
DC :
Trigger signal which includes DC signal is coupled. Trigger is applied when DC level of signal intersects with setting
trigger level.
HF Reject (High frequency rejection) :
This function interrupts a high frequency component of triggering signal. So, only the low frequency component is
passed through triggering system and then captured. Interruption of high frequency reduces a signal with 300kHz or
more.
LF Reject (Low frequency rejection) :
This function interrupts low frequency component of triggering signal. Interruption of low frequency reduces a signal
with 1kHz or less.
Slope(Rising/Falling) :
This function decides at which place the trigger point is found out, rising edge or falling edge. This function displays a
status of slope setting behind "coupling". Screen display of rising edge is " " and falling edge is " "
Mode(Auto/Normal/Single) :
When MODE function is pressed, AUTO, NORM and SINGLE are displayed in sequence. Setting of trigger mode is
displayed at the top left of the screen.
Auto :
Without trigger, waveform is able to be captured by this function. When AUTO mode is triggered forcibly without
triggering, note that It is not synchronized with the waveform of display. In other words, successive capture is not
triggered at same point on display. Therefore, waveform seems to cross and roll on the screen.
Normal :
When Trigger is operated, oscilloscope is able to capture the waveform by this function. Without trigger , oscilloscope
does not capture the waveform.
Single :
Trigger is able to be operated with NORM mode. However, when trigger is operated in long period or non-periodic
signal, it is in the status of STOP, and when trigger is not operated, oscilloscope is In stand-by status until the trigger is
restarted.
2) Type (Edge/TV): TV
Use TV triggering to trigger on the TV signal.
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