5. Using the Digital Multimeter
Model 381395 Version 1.0 January 2008
5-4
7.
or
Select the auto-range function by pressing
key or use
keys to select desired range.
•
Press
key to select a higher range.
[Ex-1] 012.3mV
Æ
0.123V
Æ
01.23V
Æ
012.3V
•
Press
key to select a lower range.
[Ex-2] 012.3V
Æ
01.23V
Æ
0.123V
Æ
012.3mV
•
Pressing
key will change the Range to Auto-range (AT)
PATH:
Î
Î
Î
or
Î
,
or
8. Connect the test leads to the source signal and observe the reading shown on the display.
If the input signal is beyond the allowed range, an overflow message “OL” will be
displayed.
5.2.2. AC V
z
Applications
ACV: Sine wave AC voltages used in the powering of appliances, lighting, and tools can be
measured.
z
Measuring ranges
Four (4) ranges from 1,000mV to 750V.
z
Measurement procedure
1. Insert the BLACK test lead into the input socket marked as ‘COM’.
2. Insert the RED test lead into the input socket marked as ‘CHA’.
3. Change the mode to Digital Multimeter. (skip this step if Digital Multimeter mode is set)
Path:
Î
Î
(Record, Relative, Compare mode or Trend plot)
4. Select
ACV
with the
or keys. The
ACV
appears at the top-left corner of the display
area.
5. Select the auto-range function by pressing
key or use
,
keys to select the
desired range.
6. Connect test leads to the source signal and observe the reading shown on the display. If
the input signal is beyond the allowed range, an overflow message “OL” will be displayed.
Note.
The LCD will indicate the measured value in numeric and Bar graph displays.
If the voltage is too high, the measurement range will switch to the next higher range
automatically.