Mastech MS2108A User Manual

4. OPERATION INSTRUCTION
4.1 HOLDING READINGS
4.1.1 Press the “HOLD/B.L” button to hold the readings while
taking measurement and the value on the display will be held.
4.1.2 Press the “HOLD/B.L” button again to release the reading
hold function.
4.2 SWITCHING REL
1) REL key is the relative value measurement communication
transmission key that acts with trigger. Press 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 the reference value.
2) Press REL △ key will enter into the Manual Measurement Mode
automatically.
3) In REL △ measurement status, press the key again, the REL △
function will be relocked.
4) Press the key in HOLD status, 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 the reference
value.
5) Press SELECT Key or use Mode Switch will cancel REL∆
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measurement mode, and go back to the normal mode (REL∆ will
disappear in the LCD).
6) OL triggering: Under REL △ mode, OL shows when input value
larger than the allowed value of the measurement mode. Press the
key again, the relative measurement function will be cancelled.
Disable to enter REL △ mode when OL shows.
7) No analog section bar function under REL △ mode.
4.3 SWITCHING FREQUENCY OR DUTY
4.3.1 During working at the voltage or current ranges, press the
“Hz/%” button one time, frequency of the voltage or current
will be measured. Press the “Hz/%” button twice, the meter
will be changed into the duty range for measuring the duty
cycle of the voltage or current. At the same time, the meter is
changed into manual mode.
4.3.2 Press the "Hz/%" button again, meter will be back to the
condition of the voltage or current measuring.
NOTE:
During working at maximum or minimum value measuring
function, the meter can’t be changed into frequency or duty cycle
measuring mode.
4.4 SWITCHING MAXIMUM OR MINIMUM VALUE
4.4.1 At all ranges, press the "MAX/MIN" button one time, the
meter can be set to maximum value measuring mode; press
the button twice, the meter can be set to minimum value
measuring mode; press the button three times, the meter will
get back to normal test mode, and the maximum and
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Mastech MS2108A Specifications

General

Brand	Mastech
Model	MS2108A
Category	Multimeter
Language	English