UNI-T UTD1000L Series, Руководство пользователя

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Figure 4-8 Adjust Trigger Level
Note: Use SELECT button to toggle between vertical position and trigger level for the channel. Following
chapter will offer more details about the operation mentioned above
4.10 Autoset for Waveform Display
UTD1000L Series is designed with autoset function that can automatically adjust the vertical scale, scan
timebase and trigger mode based on the input signal until the optimal waveform can be obtained. To apply
the autoset function, the tested signal should have a frequency at
≥
20Hz and duty cycle
＞
1
﹪
;
Under AUTOSET mode, the coupling mode of the channel is closely connected to DC autoset; When DC
autset is set to off, all signals in the channel is AC-coupled. If DC autoset is on, the channel will choose the
current setting as coupling mode, when the current setting is DC coupling, the signal will be DC-coupled and
vice versa.
For example:
1. Input 1kHz, 2Vpp sine signal into two channels, set coupling mode for both channels to DC, press
Shift+UTILITY and then F3 to set DC autoset to off. If AUTOSET is applied, the coupling mode is switched to
AC mode.
2. Input 1kHz, 2Vpp sine signal into two channels, then set AC coupling for one channel and DC mode to the
other. When AUTOSET is applied, the coupling modes for both channels keep unchanged.
4.11 Full Autoset for Input Signal
UTD1000L can offer creative auto function to capture input signal. With this function applied, the
Oscilloscope varies ranges accordingly based on the input signal until the proper waveform display can be
obtained without any manual interference.
To perform autoset function, do the following:
1. Press SHIFT button, the shift icon shows on upper right corner of the screen
2. Press AUTO button, when
​
A
​
icon displays on the screen, autoset function has already turned on;
Note: When the model is UTD1000DL and both of its two channels have signals, the signal from the trigger
source channel will be automatically displayed and the other channel will turn off under autoset mode; if
there is only one channel input with signals, this channel signal will be automatically selected and
displayed no matter which channel has been choosen as the trigger source.
UTD1000L User Manual ​
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