Chapter Ii Vertical System; Setting Coupling Channel - UNI-T UTD2000 Series User Manual

Chapter II
Each channel for UTD2000 series DSO can be set independently through the vertical
system menu. After pressing CH1 or CH2 function key, the system shall display function
menu of CH1 or CH2 channel. See Table 2-1 below for description.
Table 2-1 Channel Menu
Function Menu Setting
AC
Coupling DC
GND
ON
BW Limit
OFF
Coarse
Volts/Div
Fine
1×
10×
Probe
100×
1000×
ON
Invert
OFF

2.1 Setting coupling channel

You will be learning through the following example to change the coupling of the input
channel. If the measured signal connect to the CH1 channel is a sinusoidal signal
containing DC component. If your press F1 to select as AC coupling, to set the CH1 into
AC coupling mode. Then the DC component of the measured signal is blocked. Waveform
display is shown in figure below.
If you press F1 to select as DC coupling, setting the CH1 to DC coupling mode. You
should be able to see both the DC and AC components of measured signals at CH1
channel as shown in figure below.
Vertical System
Description
Block the DC component of input signal.
Pass through DC and AC components of input signal
Disconnect input signal
Limit bandwidth to 20MHz to reduce displayed noise.
Turn off bandwidth limited
Set vertical deflection factor by coarse adjustment based on 1-2-5 scale.
Rough adjustment setting range is further subdivided for fine adjustments to improve
vertical resolution.
Please set the probe compensation system ratio to match the probe attenuation
coefficient of the probe to be used.
Activate reverse function of waveform. Waveform will be displayed reversely
Waveform is displayed normally.
Figure 2-1 Blocked DC Component of Signal
16
UTD2000 Series User Manual