Samples Acquirement Setting; Auto Trigger; Single Trigger - UNI-T UT8805E Manual

4) U-disk can be pulled out only after the upgrade is completed and the instrument is restarted.
5) Restart the instrument and check the updated version information. Press [Shift] → [Dual], and then
select [System] → [About] to check whether upgraded version of software/hardware is right or not.
Follow above steps to upgrade again if the upgrade is not successful.
6) After checking, press [Done] to exit the system information interface.
7) Besides, users can press [Auto] button to upgrade software by U-disk files directly.
Caution: Do not pull out the U-disk, shutdown the instrument or disconnect the power during upgrading.

2.6 Samples Acquirement Setting

Sample acquirement is the process of collecting signal in certain time lag and digitizing it. The optional
trigger methods include auto trigger, single trigger and external trigger.
Press button to enter the interface as Figure 2-37.
Sampling menu description:
Function menu
Trg Src
Slope
Delay
Samples
VMC Out

2.6.1 Auto Trigger

The parameters to be set in auto trigger function are samples/trigger and VMC out.
Steps:
button and then select [Trg Src] → [Auto], or press
1) Press
function on.
2) Delay, the waiting time after trigger signal and before sampling. Set delay to be auto or manual by
[Delay]. Select Manual mode and use direction buttons to modify.
3) Select [Samples] to set sampling number by direction buttons.
4) Select [VMC Out] to set positive or negative polarity of output pulse signal.

2.6.2 Single Trigger

The parameters to be set in single trigger function are samples/trigger and VMC out.
Figure 2-37 Samples acquirement setting
Options Description
Auto/Single/Ext Set trigger source of sample acquirement
Set the polarity of external trigger slope
Auto/Manual Set delay
Set the samples number
Set the polarity of output pulse signal after
Pos/Neg
sampling
32
UT8805E Benchtop Digital Multimeter
button to turn the auto trigger