MS400 EXTECH [Extech Instruments Corporation.], MS400 Datasheet - Page 29

• Manufacturer Part Number: MS400
• Description: Handheld Digital Storage Oscilloscope & Multimeter
• Manufacturer: EXTECH [Extech Instruments Corporation.]

Freezing a Displayed Reading
Taking a Relative Measurement
To measure AC current larger than 400mA:
1. Press the RUN /STOP key to freeze the
2. Press the RUN /STOP key again to resume
A reading, relative to a reference value, is displayed in the relative measurement mode. The
following example shows how to take a relative measurement. First, the user must define a
reference value:
1. Press the R key and R will be displayed on the
2. Press the AUTO SET key untill C appears at
3. Plug the capacitance extended module into the
4. When the reading stabilizes, press F2 and the
5. All subsequent readings will be displayed
Freeze the displayed readings at any time:
1. Press the AUTO SET key once and ACA
2. Press F5 to select 20A, the units for the
3. Press the AUTO SET key once and ACA
4. Plug the current extended module into the
5. Connect the red and black test leads in
6. Press F4 to return to the 400mA
screen, STOP will be displayed at the top right
of the screen.
measurements.
top of the screen.
the top of the screen.
capacitance measurement jack.
triangle icon will be displayed on the top of the
screen.
displayed below the triangle
relative to the stored reference reading.
will be visible at the top of the screen.
main reading window will be A.
will be visible at the top of the screen.
current measurement jack, and plug the test
leads into the shunt.
series to the measurement points and the
AC current value will be displayed on the
screen.
measurement mode.
The
saved
reference
value
29
Figure 30: AC Current Measurement for 20A
is
Figure 32: Relative Measurement.
Figure 31: Freezing the Readings
MS400 Version 2.0 – December 2007