User
EM1230
Handheld Digital Oscilloscope
,
s Manual
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F1
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11
Adjust the vertical range 10mV/div 500V/div(No probe attenuation 1:1
2 Channel A\B other settings
Power On
Enable / disable the channel CHA / CHB
The instrument can display the input A or B input signal waveform in dual-channel oscilloscope
mode, the input A and input B signals simultaneously displayed.if the user wants to measure
individual signals, selectable single-channel oscilloscope mode, simply connect the input A that
to the input B closed; Conversely, if the user wants to simultaneously measure two
signals ,directly using dual-channel oscilloscope mode while connected to input A, input B.
Select CHA / CHB signal coupling,
DC coup/AC coup
DC Coupling allows you to measure and display both the DC and AC components of a signal.
AC Coupling blocks the DC component and passes the AC component onl
y
.
Select the CHA/CHB bandwidthlimit
BW25MHz
/
BW10KHz
There are cases where you may want to filter out noises in order to see a better signal. This can
be especially true when ignition noise is present. The instrument provides a noise filter for each
input channel which reduces the bandwidth from its normal 25MHz to10KHz. You can enable or
disable CH A Filter or CH B Filter using the INSTRUMENT SETUP menu. When enabled, the
FILTER indicator appears on the screen.
Select the CHA/CHB voltage probe attenuation coefficient
V:×1
/
V:×10
/
V:×100
/
V:×1000
/
V:×10000
Or select the CHA/CHB current probe conversion coefficient
1mA/mV
;
10mA/mV
;
0.1A/mV
;
1A/mV
;
10A/mV
You can according to the probe type CHA or CHB (voltage probe, current probe) to select its
