EX510-EU-EN-V3.3-1/12
9
FREQUENCY/DUTY CYCLE MEASUREMENTS (ELECTRONIC)
1. Set the rotary function switch to the green “
Hz %
” position.
2. Press the Hz/% button to indicate “
Hz
” in the display.
3. Insert the black lead banana plug into the negative
COM
jack and the red
test lead banana plug into the positive
Hz
jack.
4. Touch the test probe tips to the circuit under test.
5. Read the frequency on the display.
6. Press the
Hz/%
button again to indicate “
%
” on the display.
7. Read the % of duty cycle on the display.
AUTORANGING/MANUAL RANGE SELECTION
When the meter is first turned on, it automatically goes into Autoranging. This automatically selects
the best range for the measurements being made and is generally the best mode for most
measurements. For measurement situations requiring that a range be manually selected, perform
the following:
1. Press the
RANGE
key. The “
AUTO”
display indicator will turn off.
2. Press the
RANGE
key to step through available ranges until you select the desired range.
3. To exit the Manual Ranging mode and return to Autoranging, press and hold the
RANGE
key for 2
seconds.
Note:
Manual ranging does not apply for the Capacitance and Frequency functions.
MAX/MIN
Note:
When using the MAX/MIN function in Autoranging mode, the meter will “lock” into the range
that is displayed on the LCD when MAX/MIN is activated. If a MAX/Min reading exceeds that
range, an “OL” will be displayed. Select the desired range BEFORE entering MAX/MIN mode.
1. Press the
MAX/MIN
key to activate the MAX/MIN recording mode. The display icon "
MAX
" will
appear. The meter will display and hold the maximum reading and will update only when a new
“max” occurs.
2. Press the
MAX/MIN
key again and the display icon "
MIN
" will appear. The meter will display and
hold the minimum reading and will update only when a new “min” occurs.
3. To exit MAX/MIN mode press and hold the
MAX/MIN
key for 2 seconds.
RELATIVE MODE
The relative measurement feature allows you to make measurements relative to a stored reference
value. A reference voltage, current, etc. can be stored and measurements made in comparison to
that value. The displayed value is the difference between the reference value and the measured
value.
1. Perform the measurement as described in the operating instructions.
2. Press the
REL
button to store the reading in the display and the "
REL
" indicator will appear on the
display.
3. The display will now indicate the difference between the stored value and the measured value.
4. Press the
REL
button to exit the relative mode.
Note:
The Relative function does not operate in the Frequency function.
