Aneng Q1 User manual

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Specifications are subject to change without notice.
User Manual

LIMITED WARRANTY
AND LIMITATION OF LIABILITY
Customers enjoy one-year warranty
from the date of purchase.
This warranty does not cover fuses,
disposable batteries, damage from
misuse accident, neglect, alteration,
contamination, or abnormal conditions
of operation or handling, including
failures caused by use outside of the
product's specifications, or normal wear
and tear of mechanical components.

Table of Contents Page
Introduction..........................................................1
Safety Information................................................1
Instrument Overview............................................3
LCD Display...................................................3
Function Buttons............................................5
Input Terminals................................................8
Measurements Instruction.....................................9
Measure AC/DC Voltage.................................9
Measure AC/DC Current.................................9
Measure Resistance.....................................10
Test Diodes and Continuity...........................11
Measure Capacitance..................................11
Measure Frequency and Duty Cycle.............12
Measure Temperature...................................13
Test NCV…………....…………………………14

Maintenance.......................................................15
Clean the Product.........................................15
Replace the Batteries...................................15
Replace the Fuses.......................................16
Specifications.....................................................17
General Specifications.................................17
Mechanical Specifications............................17
Environmental Specifications.......................17
Electrical Specifications......................................18

Introduction
This product is a9999 counts true RMS auto-
ranging digital multimeter. It is operated all by
buttons with a triple display.
Safety Information
To avoid possible electrical shock, fire, or
personal injury, please read all safety information
before you use the product. Please use the
product only as specified, or the protection
supplied by the product can be compromised.
•Examine the case before you use the product.
Look for cracks or missing plastic. Carefully look
at the insulation around the terminals.
•The measurement must be made with correct
input terminals and functions and within the
allowable measuring range.
•Do not use the product around explosive gas,
vapor, or in damp or wet environments.
1

•Keep fingers behind the finger guards on the
probes.
•When the product has already been connected
to the line being measured, do NOT touch the
input terminal that is not in service.
•Disconnect the test leads from the circuit before
changing the mode.
•When the voltage to be measured exceeds 36V
DC or 25V AC, the operator shall be careful
enough to avoid electric shock.
•Misuse of mode or range can lead to hazards,
be cautious. “ ” will be shown on the display
when the input is out of range.
•Low level of a battery will result in incorrect
readings. Change the batteries when battery
level is low. Do not make measurements when
the battery door is not properly placed.
2

3
LCD Display
①
Auto range. The product selects
the range with the best resolution.
②
Manual range. The user selects
the range.
③
Display shows maximum reading.
④
Relative mode.
⑤
Diode test.
⑥
Continuity test.
⑦
Display shows minimum reading.
⑧
Secondary measurements display.
⑨
Duty cycle test.
⑩
Capacitance test. (Farad)
Instrument Overview
①②③④⑤⑥⑦⑧⑨
⑩
⑪
⑫
⑬
⑭
⑮⑯
⑰
⑱
⑲
⑳
㉑
㉒
㉓
㉔

4
⑪
Frequency
test. (Hertz)
⑫
Temperature
test. (Celsius)
⑬
Temperature
test. (Fahrenheit)
⑭
Analog
bar graph.
⑮
Resistance
test. (Ohm)
⑯
Current
test. (Ampere)
⑰
Voltage
test. (Volt)
⑱
Primary
measurement display.
⑲
The
product measures
both
sinusoidal
and nonsinusoidal
ac
waveforms
accurately.
⑳
Low
battery. Replace batteries.
㉑
Negative
readings.
㉒
Alternating
current.
㉓
Direct
current.
㉔
Display
freezes present reading.
Measurement
units.

5
Function Buttons
①②
③
④⑤
⑥
⑦
①
Push for more than 2 seconds to turn on/off
the product.
•
The product automatically powers off
after
5 minutes of inactivity.
•
The built-in beeper beeps 5 times 1
minute
before auto power off.
•
To disable the Auto Power Off
function,
hold down while turning on the
product,
you will hear five beeps if you
have
successfully disabled the function.
Push to toggle between DCA/ACA when the
red test lead is plugging in the terminals to
test current.

6
②
Push
once to hold the current reading on
the
display
; push again to continue
normal
operation
.
Push
for more than 2 seconds to enter
the
relative
mode. The product will store the
present
reading
as a reference for subsequent
readings.
The
display is zeroed, and the stored reading
is
subtracted
from all subsequent readings. Long
-
push
again to exit the relative mode.
③
Push
this button to toggle between
testing
modes
of DCV, ACV, and NCV.
④
Push
this button to toggle between
testing
modes
of DCmV ( ＜99.99mV), ACmV(
＜
99
.99mV), and Temperature.
⑤
Push
this button to toggle between
testing
modes
of Resistance, Diode/Continuity,
and
Capacitance
.
⑥
Push
this button once to enter the manual
range
mode
.In manual range mode, each
push
increases
the range; when the highest range
is
reached,
the next push will lead to the
lowest
range
.To exit the manual range mode,
push
the
button for more than 2 seconds.

⑦
Push
this button when the product is at
the
setting
of ACV, the primary
measurement
display
will show the current
frequency
(1
~100kHz) while the secondary
measurement
display
will show the current duty cycle.
Push
this button when the product is at
the
setting
of ACmV, the primary
measurement
display
will show the current
frequency
(1
~5MHz) while the secondary
measurement
display
will show the current duty cycle.
7

Input Terminals
8
A mA
Input
terminal for AC/DC
current
measurements
to 9.999A.
μA
Input
terminal for AC/DC
current
measurements
to 999.9μA.
COM
Common
(return) terminal for
all
measurements
.
VΩHz
Input
terminal for the measurements of:
1
. AC/DC voltage
2
. Resistance
3
. Capacitance
4
. Frequency
5
. Temperature
6
. Continuity
7
. Diode
8
. Duty cycle

9
Measurements Instruction
Measure AC/DC Voltage
1. Connect the black test lead to the COM Terminal
and the red lead to the VΩHz Terminal.
2. To measure voltage under 99.99mV, push ,
push once to measure DCmV, push twice to
measure ACmV. To measure voltage higher
than 99.99mV, push , push once to measure
DCV, push twice to measure ACV.
3. Touch the probes to the correct test points of
the circuit to measure the voltage.
4. Read the measured voltage on the display.
Measure AC/DC Current
1. Connect the black test lead to the COM Terminal
and the red lead to the AmA Terminal or the μA
Terminal (choose based on the value of the current
to be measured); if the previous setting was
continuity/diode, push any of the three rectangle
buttons on the leftonce.
*Do not measure voltage that exceeds the extremes
as indicated in the Specifications.
*Do not touch high voltage circuit during measurements.

10
2. Push to toggle between DCA and ACA.
3. Break the circuit path to be measured, connect
the test leads across the break and apply
power.
4. Read the measured current on the display.
Measure Resistance
1. Connect the black test lead to the COM Terminal
and the test lead to the VΩHz Terminal.
2. Push once to enter the Resistance Mode.
3. Touch the probes to the desired test points of
the circuit to measure the resistance.
4. Read the measured resistance on the display.
*Do not measure current that exceeds the extremes
as indicated in the Specifications.
*Use the AmA Terminal when you are measuring an
unknown current. Then switch to the μA Terminal
if necessary.
*Do not input voltage at this setting.
*Disconnect circuit power and discharge all
capacitors before you test resistance.
*Do not input voltage at this setting.

11
Test Diodes and Continuity
1. Connect the black test lead to the COM Terminal
and the red lead to the VΩHz Terminal.
2. Push twice to enter the Diode/Continuity Mode.
3. To test continuity, touch the probes to the
desired test points of the circuit. The built-in
beeper will beep when there is a short circuit.
4. To test diodes, connect the red probe to the
anode side and the black probe to the cathode
side of the diode being tested. Then read the
forward bias voltage value on the display. If the
polarity of the test leads is reversed with diode
polarity or the diode is broken, the display
reading shows “ ”.
Measure Capacitance
1. Connect the black test lead to the COM Terminal
and the red lead to the VΩHz Terminal.
*Do not input voltage at this setting.
*Disconnect circuit power and discharge all
capacitors before you test diode.

2. Push three times to enter the Capacitance
Mode.
3. Connect the red probe to the anode side and
the black probe to the cathode side of the
capacitor being tested.
4. Read the measured capacitance value on the
display once the reading is stablized.
Measure Frequency and Duty Cycle
1. Connect the black test lead to the COM Terminal
and the red lead to the VΩHz Terminal.
2. When the frequency to be measured is
≤100kHz, push until the product is at the
setting of ACV; touch the probes to the desired
test points, and the secondary measurement
display will show the frequency; then push ,
the primary measurement display will show
frequency while the secondary measurement
display will show the duty cycle.
12
*Disconnect circuit power and discharge all
capacitors before you test capacitance.

3. When the frequency to be measured is
between 100kHz and 500MHz, push twice
to enter the ACmV Mode; touch the probes to
the desired test points, and the secondary
measurement display will show the frequency;
then push , the primary measurement
display will show frequency while the
secondary measurement display will show the
duty cycle.
Measure Temperature
1. Connect the black test lead to the COM Terminal
and the red lead to the VΩHz Terminal.
2. Push three times to enter the Temperature
Mode. Both displays will show room temperature;
the primary measurement display will show
Celsius while the secondary measurement
display will show Fahrenheit.
13

14
2. Touch the probes to the desired test points.
3. Read the measured temperature on the
display.
Test NCV
1. Push twice to enter the NCV Mode.
2. Hold the product and move it around, the built-
in beeper will beep when the inner sensor
detects AC voltage nearby. The stronger the
voltage is, the quicker the beeper beeps.

Maintenance
Beyond replacing batteries and fuses, do not
attempt to repair or service the product unless you
are qualified to do so and have the relevant
calibration, performance test, and service
instructions.
Clean the Product
Wipe the product with a damp cloth and mild
detergent. Do not use abrasives or solvents. Dirt
or moisture in the terminals can affect readings.
*Remove the input signals before you clean the
product.
Replace the Batteries
When “ ” is shown on the display, batteries shall
be replaced as below:
1. Remove the test leads and turn off the product
before replacing the batteries.
15

2. Loosen the screw on the battery door and
remove the battery door.
3. Replace the used batteries with new batteries
of the same type.
4. Place the battery door back and fasten the
screw.
Replace the Fuses
When a fuse is blown or do not work properly, it
shall be replaced as below:
1. Remove the test leads and turn off the product
before replacing the fuse.
2. Loosen the four screws on the back cover and
the screw on the battery door, then remove the
battery door and the back cover.
3. Replace the fuse with a new fuse of the same
type.
4. Place the back cover and the battery door
back and fasten the screws.
16