UNI-T UPO3000E Series - Page 39

UNI-T
UPO 3000E&UPO2000E Series Oscilloscope Programming Manual
:TRIG:LEV:HIGH? query return 2.000e000
:TRIGger:SOURce
 Command format：
:TRIGger:SOURce <source>
:TRIGger:SOURce?
 Functional description：
Set single information source trigger, input channel(CHANnel1, CHANnel 2, CHANnel 3,
CHANnel 4）, external trigger( EXT, EXT5), AC Line. Only EDGE/ PULSe / VIDeo support AC
Line, EXT and EXT5.
<source> presents information source trigger,
CHANnel<n>|EXT|EXT5|ACLine，<n> take value as 1, 2, 3, 4.
 Return format：
Query return information source trigger { CHANnel1| CHANnel2| CHANnel3|
CHANnel4|EXT|EXT5|ACLINE}.
 For example：
:TRIGger:SOUR CHAN1 set channel 1 as edge trigger
:TRIGger:SOUR? query return CHANnel1
:TRIGger:COUPling
 Command format：
:TRIGger:COUPling {DC|AC|LF|HF|NOISE}
:TRIGger:COUPling?
 Functional description：
Set the coupling mode, DC, AC, LF, HF and NOISE, except VIDeo.
 Return format：
Query return coupling mode {DC|AC|LF|HF|NOISE}.
 For example：
:TRIGger:COUPling AC set edge trigger as AC
:TRIGger:COUPling? query return AC