Duratool D03128, Manual

Page: 9 / 16

9
OPERATION
Holding Readings
• Press the “ HOLD/B.L ” button to hold the readings while taking measurement and
the value on the display will be held.
• Press the “
HOLD/B.L
” button again to release the reading hold function.
SWITCHING REL
• The “ REL ” key is the relative value measurement communication transmission
key that acts with trigger. Pressing this key will enter into the relative value
measurement mode.
• The system will save the display value in the memory as the reference value.
When doing the measurement later, the display value will be the difference value
that the entry value deducts from the reference value.
• Pressing the “ REL ” key will enter into the Manual Measurement mode
automatically.
• In REL measurement status, press the key again and the REL function will be
relocked.
• Press the key in HOLD status and the Hold function will be cancelled.
• The system will save the display value in the memory as the reference value.
• When doing the measurement later, the display value is the difference that the
entry value deducts from the reference value.
• Press the “ SELECT ” key or use the “ MODE ” switch to cancel REL measurement
mode, and go back to normal mode (“RELΔ” will disappear in the LCD).
• OL triggering: Under RELΔ mode, “OL” shows when the input value is larger than
the allowed value of the measurement mode.
• Press the key again and the relative measurement function will be cancelled.
• Disable to enter RELΔ mode when “OL” shows.
• No analogue section bar function under RELΔ mode.
SWITCHING FREQUENCY OR DUTY CYCLE
• When working at the voltage or the current ranges, press the “ Hz/% ” button once
and the frequency of the voltage or current will be measured.
• Press the “ Hz/% ” button” twice and the meter will be changed in the duty range for
measuring the duty cycle of the voltage or current.
• At the same time, the meter changes into manual mode.
• Press the “ Hz/% ” button again and the meter will be back to the condition of the
voltage or current measuring.
Note: When working at the maximum or minimum value measuring function, the meter
can’t be changed into frequency or duty cycle measuring mode.
SWITCHING MAXIMUM OR MINIMUM VALUE
• At all ranges the “ MAX/MIN ” button once and the meter can be set to the
maximum value measuring mode.
• Press the button twice and the meter can be set to the minimum value measuring
mode.
• Press the button three times and the meter will revert back to normal test mode,
while the maximum and minimum value will be recorded by the chip.
• Press and hold the “ MAX/MIN ” button for more than two seconds and the meter
will go back to normal testing.
• Note: When measuring maximum or minimum value, the meter will be set to