connected to EXT TRIG interface. Signal can be
used for EXT and EXT can be used within signal
trigger level scope of -3V to +3V
utomatic trigger: The system will acquire
waveform data automatically so as to displa
scanning base line on the screen without trigger
signal input. It will convert to tr igger scannin
automatically for signal synchronization whe
producing trigger s ignal
It is allowed to select EXT/5 for oscillograph of 5.7-
inch screen. Outer trigger s hall be divided by 5 so
that trigger sc ope can expand to -15V to +15V for
trigger of digital storage oscillograph under large
signal
Municipal power: Such trigger mode can be used
to observe signal with regard to municipal power
For instance, it can pr ovide relationship betwee
lighting equipment and power supply equipment so
as to gain stable synchronization
2 Trigger mode: It is to determine behavior mode
of digital storage oscillograph without trigger event
This digital storage oscillograph can also provide
triggers, namely, automatic, normal and single
trigger modes
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Operating Manual for UTD2000/3000
4
Note: Without trigger signal is allowed under
automatic” mode when setting scanning waveform to
5-ms/div or less time base
Normal trigger: Digital s torage oscillograph ca
not acquire waveform until meeting trigger conditions
under ordinary trigger mode. Trigger scanning can be
produced when producing trigger signal
Single trigger: User can press “operation” button
once under single trigger mode for entry and trigger
waiting for digital storage oscillograph. It will sample
and display all acquired waveform then stop after
digital storage oscillograph detects once trigger
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