Duty Cyle/Frequency Measurements (Electronic); Autoranging/Manual Selection; Max/Min - Multimetrix DMM 220 Manual De Instrucciones

Chapter II

3.10 Duty cyle/frequency measurements (Electronic)

1. Set the function switch to the "Hz %"
position.
2. Press the Hz/% key to display "Hz".
3. Insert the black lead banana plug into the
negative COM terminal and the red test
lead banana plug into the positive +
terminal.
4. Apply test probes to the points of the
circuit to be tested.
5. The frequency measured is displayed on
screen.
6. Press the Hz% key again to display "%".
7. The duty cycle is displayed in percentage.

3.11 Autoranging/Manual selection

When the multimeter is first turned on, it automatically goes into
Auto-ranging and automatically selects the best range for the
measurements being made. This is generally the best mode for most
measurements. For measurement situations requiring manual
selection proceed as follows:
1. Press the RANGE key. The "AUTO" display indicator will turn off.
2. Press the RANGE several times key to scroll through the available
ranges until the one you want is displayed.
3. To exit the Manual selction mode and return to Autoranging, press
and hold down the RANGE key for 2 seconds.
 Manual ranging does not apply to Frequency measurements.

3.12 MAX/MIN

 When using the MAX/MIN function in Autoranging mode, the
multimeter will "lock" into the range that is displayed on the LCD
when MAX/MIN is activated. If a MAX/Min reading exceeds that
range, "OL" will be displayed. Select the adequate range before
entering MAX/MIN mode.
1. Press the MAX/MIN key to activate the MAX/MIN measurement
mode. The "MAX" icon will appear. The multimeter will display and
hold the maximum measurement until another maximum value is
made.
2. Press the MAX/MIN key again to display "MIN" icon. The
multimeter will display and hold the minimum measurement until
another value is measured..
3. To exit MAX/MIN mode, press and hold the MAX/MIN key for 2
seconds.
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