4.1 Diagram (Fig. 1)
1. LCD
Display.
2. Function
Selector
Use to select the desired measurement or OFF.
3. 20A Input Jack
Plug-in connection for the red (positive) lead for 20A measurements only.
4. mA/µA TEMP Input Jack
Plug-in connection for the red (positive) lead for temperature and current measurements up
to 400mA only.
5. COM
Input
Jack
Plug-in connection for the black (negative) lead for all measurements.
6. V
/
Ω
/F/
CAP Input Jack
Plug-in connection for the red (positive) lead for voltage, capacitance, frequency, resistor,
continuity and diode check.
7. MAX / MIN button
Use to manually select the desired display.
8. Data Hold button
Use to hold a reading. When this button is pressed, the data being displayed will be frozen in
the display and a DH will appear. Changes in the input signals will not change the display. It
can be used in all measurement modes. Press the button again to release this function and
the DH will disappear.
9.
/AC/DC Hz/% button
In the OHM
mode, use this button to choose between continuity check or diode test or
resistance test.
In the A AC and D DC mode, use this button to choose between A AC and D DC ranges.
In the FREQ mode, use this button to choose between frequency test and duty test.
10. Relative button
This is a very convenient function button. It is used for measuring the different (relative)
value between parts and the reference.
Ex. During the measurement of a +5V standard DC voltage, press this button once, the value
on the display will be changed from +5V to 0V.
Disconnect the test lead from the source (-5V will be displayed on the LCD).
If you measure a +4.5VDC source, the LCD will display -0.5V. This is indicating that the
value you measured is 0.5V lower than the standard value.
11. Auto Test Lead Insert Indication LED.
Patented New technology exclusively used for our products.
The bright LED indicates the right jack to be used related to the selected function and range.
The LED will shut off after the test lead is fully inserted into the indicated jack. If the test lead
is inserted into a wrong jack, the LED will flash and the buzzer will sound.
4.2 Operating Instructions
4.2.1 DC Voltage Measurement
1. Set the function switch to the position of V DC, the LED above the jack (V/
Ω
/F/
CAP)
will shine.
2. Insert the black test lead banana plug into the negative (-) jack (COM) and the red test
lead banana plug into the positive (+) jack (V/
Ω
/F/
CAP).
NOTE
: The meter will be in Auto-ranging. If you wish to manually set the range, do so
following instructions in the Description (4.1Diagram item7) section of this manual. For
manual ranging, start at the highest range and work down.
3. Touch the test lead tips to the circuit under test.
4. The value and polarity of the voltage will appear on the display.
CAUTION:
If OL shows on the display, disconnect the test lead from circuit immediately to
avoid damaging the meter.
Never apply the voltage over 1000 V.
Use
extreme
caution when working with high voltage.
Never connect test lead with circuit when changing the position of function switch.
Summary of Contents for HH0308C
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