Zico ZI-849 User manual

ZI-849
OPERATING INSTRUTION
DIGITAL MULTIMETER
www.zicotech.com
10A COM V mA
OFF 600 200
2000
20m
200
m
10A
¡ãC
¡ãF
200
2000
20k
200k
2000
k
600
200
20
2000
m
200
m
VAC
ADC
Temp
CAT III 600V
VDC
HOLD

1
SAFETY INSTRUCTIONS
This meter has been designed for safe use, but must be
operated with caution. The rules listed below must be
carefully followed for safe operation.
1. NEVER apply voltage or current to the meter that
exceeds the specified maximum:
Input Limits
Function
Maximum Input
VAC
600V DC/AC
V DC or V
AC
600V DC/AC, 200Vrms on
200mV range
mA DC
200mA 250V fast acting fuse
A DC
10A 250V fast acting fuse
(30 seconds max every 15
minutes)
Resistance,
Continuity
250Vrms for 15sec max
2. USE EXTREME CAUTION when working with high
voltages.
3. DO NOT measure voltage if the voltage on the "COM"
input jack exceeds 500V above earth ground.
4. NEVER connect the meter leads across a voltage
source while the function switch is in the current,
resistance, or diode mode. Doing so can damage the
meter.
5. ALWAYS discharge filter capacitors in power supplies
and disconnect the power when making resistance or
diode tests.

2
6. ALWAYS turn off the power and disconnect the test
leads before opening the doors to replace the fuse or
batteries.
7. NEVER operate the meter unless the back cover and
the battery and fuse doors are in place and fastened
securely.

3
SAFETY SYMBOLS
This symbol adjacent to another symbol,
terminal or operating device indicates that
the operator must refer to an explanation
in the Operating Instructions to avoid
personal injury or damage to the meter.
This WARNING symbol indicates a
potentially hazardous situation, which if
not avoided, could result in death or
serious injury.
This CAUTION symbol indicates a
potentially hazardous situation, which if
not avoided, may result damage to the
product.
This symbol advises the user that the
terminal(s) so marked must not be
connected to a circuit point at which the
voltage with respect to earth ground
exceeds (in this case) 500 VAC or VDC.
This symbol adjacent to one or more
terminals identifies them as being
associated with ranges that may, in
normal use, be subjected to particularly
hazardous voltages. For maximum safety,
the meter and its test leads should not be
handled when these terminals are
energized.
This symbol indicates that a device is
protected throughout by double insulation
or reinforced insulation.
WARNING
CAUTION
MAX
500
V

4
CONTROLS AND JACKS
10A COM V mA
OFF 600 200
2000
20m
200
m
10A
¡ãC
¡ãF
200
2000
20k
200k
2000
k
600
200
20
2000
m
200
m
VAC
ADC
Temp
CAT III 600V
VDC
HOLD
1
6
2
3
7
5
4
1. LCD Display
2. Function switch
3. 10A jack
4. COM jack
5. Positive jack
6. Data Hold Button
7. Backlight Button
Note: Tilt stand, fuse and battery compartment are on rear
of unit.

5
SYMBOLS AND ANNUNCIATORS
•))) Continuity
Diode test
 micro (amps)
m milli ( volts, amps)
k kilo (ohms)
ohms
VDC volts direct current
VAC volts alternating current
ADC amps direct current
BAT Battery test
o
C Degrees Centigrade
o
F Degrees Fahrenheit

6
SPECIFICATIONS
Function
Range
Resolution
Accuracy
DC Voltage
(V DC)
200mV
0.1mV
(0.5%reading
+ 2 digits)
2000mV
1mV
20V
0.01V
200V
0.1V
(0.8%reading
+ 2 digits)
600V
1V
AC Voltage
(V AC)
200V
0.1V
(1.2%reading
+ 10 digits
(50/60Hz)
600V
1V
DC Current
(A DC)
2000A
1A
(1.0%reading
+ 2 digits)
20mA
10A
200mA
100A
(1.2%reading
+ 2 digits)
10A
10mA
(3.0%reading
+ 2 digits)
Resistance
200
0.1
(0.8%reading
+ 2 digits)
2000
1
20k
0.01k
200k
0.1k
2000k
1k
(1.2%reading
+ 2 digits)
Temp
o
C
-20
o
C~+760
o
C
1
o
C
(3.0%reading
+3digits)(meter
only,probe
accracy not
included)
Temp
o
F
-4
o
F~+1400
o
F
1
o
F
NOTE: Accuracy specifications consist of two elements:
(% reading) –This is the accuracy of the measurement

7
circuit.
(+ digits) –This is the accuracy of the analog to digital
converter.
NOTE: Accuracy is stated at 65oF to 83oF (18oC to 28oC)
and less than 75% RH.
SPECIFICATIONS
Diode Test Test current of 1mA maximum,
open circuit voltage 2.8V DC
typical
Continuity Check Audible signal will sound if the
resistance is less than
approximately 30
Input Impedance >1MΩ
ACV Bandwidth 45Hz to 450Hz
DCA voltage drop 200mV
Display 3 ½ digit, 2000 count LCD, 1.1”
digits
Overrange indication “1” is displayed
Polarity Automatic (no indication for
positive polarity); Minus (-) sign
for negative polarity.
Measurement Rate 2 times per second, nominal
Low Battery Indication “BAT” is displayed if battery
voltage drops below operating
voltage
Battery one 9 volt (NEDA 1604) battery
Fuses mA, µA ranges; 0.2A/250V fast
blow
A range; 10A/250V fast blow
Operating Temperature 32oF to 122oF (0oC to 50oC)
Storage Temperature -4oF to 140oF (-20oC to 60oC)
Relative Humidity <70% operating, <80% storage

8
Operating Altitude 7000ft. (2000) meters maximum.
Weight 255g
Size 150mm x 70mm x 48mm
Safety For indoor use and in
accordance with Overvoltage
Category II, Pollution Degree 2.
Category II includes local level,
appliance, portable equipment,
etc., with transient overvoltages
less than Overvoltage Category
III.
BATTERY INSTALLATION
WARNING: To avoid electric shock, disconnect the test
leads from any source of voltage before removing the
battery door.
1. Disconnect the test leads from the meter.
2. Open the battery door by loosening the screw using a
Phillips head screwdriver.
3. Insert the battery into battery holder, observing the
correct polarity.
4. Put the battery door back in place. Secure with the
screw.
WARNING: To avoid electric shock, do not operate the
meter until the battery door is in place and fastened
securely.
NOTE: If your meter does not work properly, check the fuses
and batteries to make sure that they are still good and that

9
they are properly inserted.
DATA HOLD BUTTON
The Data Hold function allows the meter to "freeze" a
measurement for later reference.
1. Press the DATA HOLD button to “freeze” the reading on
the indicator. The indicator “HOLD” will be appear in the
display.
2. Press the DATA HOLD button to return to normal
operation.
BACK LIGHT BUTTON
1. The BACK LIGHT button is used to turn the back light
on or off. Press the BACK LIGHT BUTTON to turn the
back light on.
2. Press the BACK LIGHT BUTTON to turn the back light
off.
OPERATING INSTRUCTIONS
1. ALWAYS turn the function switch to the OFF position
when the meter is not in use.
2. If “OL” appears in the display during a measurement,
the value exceeds the range you have selected.
Change to a higher range.
NOTE: On some low AC and DC voltage ranges, with the
test leads not connected to a device, the display may show
a random, changing reading. This is normal and is caused
by the high-input sensitivity. The reading will stabilize and
give a proper measurement when connected to a circuit.
WARNING: Risk of electrocution. High-voltage
circuits, both AC and DC, are very dangerous
and should be measured with great care.

10
DC VOLTAGE MEASUREMENTS
CAUTION: Do not measure DC voltages if a motor on
the circuit is being switched ON or OFF. Large voltage
surges may occur that can damage the meter.
1. Set the function switch to the highest V DC position.
2. Insert the black test lead banana plug
into the negative (COM) jack.
Insert the red test lead banana plug
into the positive (V) jack.
3. Touch the black test probe tip to the
negative side of the circuit.
Touch the red test probe tip to the
positive side of the circuit.
4. Read the voltage in the display. Reset the function
switch to successively lower V DC positions to obtain a
higher resolution reading. The display will indicate the
proper decimal point and value. If the polarity is
reversed, the display will show (-) minus before the
value.
AC VOLTAGE MEASUREMENTS
WARNING: Risk of Electrocution. The probe tips may
not be long enough to contact the live parts inside some
240V outlets for appliances because the contacts are
recessed deep in the outlets. As a result, the reading
may show 0 volts when the outlet actually has voltage on
it. Make sure the probe tips are touching the metal
contacts inside the outlet before assuming that no
voltage is present.

11
CAUTION: Do not measure AC voltages if a motor on
the circuit is being switched ON or OFF. Large voltage
surges may occur that can damage the meter.
1. Set the function switch to the highest V AC position.
2. Insert the black test lead banana plug
into the negative (COM) jack.
Insert red test lead banana plug into
the positive (V) jack.
3. Touch the black test probe tip to the
negative side of the circuit.
Touch the red test probe tip to the
positive side of the circuit.
4. Read the voltage in the display. Reset
the function switch to successively lower V AC positions
to obtain a higher resolution reading. The display will
indicate the proper decimal point and value.
DC CURRENT MEASUREMENTS
CAUTION: Do not make current measurements on the
10A scale for longer than 30 seconds. Exceeding 30
seconds may cause damage to the meter and/or the test
leads.
1. Insert the black test lead banana plug into the negative
(COM) jack.
2. For current measurements up to 200mA DC, set the
function switch to the highest DC mA position and insert
the red test lead banana plug into the (mA) jack.

12
3. For current measurements up to
10A DC, set the function switch to
the 10A range and insert the red
test lead banana plug into the
(10A) jack.
4. Remove power from the circuit
under test, then open up the
circuit at the point where you wish
to measure current.
5. Touch the black test probe tip to
the negative side of the circuit.
Touch the red test probe tip to the positive side of the
circuit.
6. Apply power to the circuit.
7. Read the current in the display. For mA DC
measurements, reset the function switch to
successively lower mA DC positions to obtain a higher
resolution reading. The display will indicate the proper
decimal point and value.
RESISTANCE MEASUREMENTS
WARNING: To avoid electric shock, disconnect power to
the unit under test and discharge all capacitors before
taking any resistance measurements. Remove the
batteries and unplug the line cords.
1. Set the function switch to the highest
2. Insert the black test lead banana plug into the
negative (COM) jack

13
Insert the red test lead banana plug into the positive
jack.
3. Touch the test probe tips across
the circuit or part under test. It is
best to disconnect one side of
the part under test so the rest of
the circuit will not interfere with
the resistance reading.
4. Read the resistance in the
display and then set the function
switch to the lowest position
that is greater than the actual or any anticipated
resistance. The display will indicate the proper
decimal point and value.
CONTINUITY CHECK
WARNING: To avoid electric shock, never measure
continuity on circuits or wires that have voltage on them.
1. Set the function switch to the position.
2. Insert the black lead banana plug into the negative
(COM) jack
Insert the red test lead banana plug into the positive ()
jack.
3. Touch the test probe tips to the circuit or wire you wish
to check.
4. audible signal will sound. If the circuit is open, the
display will indicate “1”.
DIODE TEST

14
1. Insert the black test lead banana plug into the
negative COM jack and the red test lead banana
plug into the positive diode jack.
2. Turn the rotary switch to the /•))) position.
3. Touch the test probes to the diode under test.
Forward voltage will indicate 400 to 700mV.
Reverse voltage will indicate “I”. Shorted devices
will indicate near 0mV. Shorted devices will
indicate near 0mV and an open device will
indicate “I” in both polarities.
TEMPERATURE MEASUREMENTS
WARNING: To avoid electric shock, disconnect both test
probes from any source of voltage before making a
temperature measurement.
1.If you wish to measure temperature in oF, set the function
switch to the oF range. If you wish to measure
temperature in oC, set the function switch to the oC range.
2.Insert the type K thermocouple probe black test lead
banana plug into the negative COM jack and the red test
lead banana plug into the positive Temp jack..
3.Touch the Temperature Probe head to the part whose
temperature you wish to measure. Keep the probe
touching the part under test until the reading stabilizes
(about 30 seconds).
4.Read the temperature in the display. The digital reading
will indicate the proper decimal point and value.
WARNING: To avoid electric shock, be sure the
thermocouple has been removed before changing to
another measurement function.

15
REPLACING THE BATTERIES
WARNING: To avoid electric shock, disconnect the test
leads from any source of voltage before removing the
battery door.
1. When the batteries become exhausted or drop below
the operating voltage, “BAT” will appear in the
right-hand side of the LCD display. The batteries should
be replaced.
2. Follow instructions for installing batteries. See the
Battery Installation section of this manual.
3. Dispose of the old batteries properly.
WARNING: To avoid electric shock, do not operate your
meter until the battery door is in place and fastened
securely.
REPLACING THE FUSES
WARNING: To avoid electric shock, disconnect the test
leads from any source of voltage before removing the
fuse door.
1. Disconnect the test leads from the meter and any
item under test.
2. Open the fuse door by loosening the screw on the
door using a Phillips head screwdriver.
3. Remove the old fuse from its holder by gently pulling
it out.
4. Install the new fuse into the holder.
5. Always use a fuse of the proper size and value

16
(0.2A/250V fast blow for the 200mA range, 10A/250V
fast blow for the 10A range).
6. Put the fuse door back in place. Insert the screw and
tighten it securely.
WARNING: To avoid electric shock, do not operate your
meter until the fuse door is in place and fastened securely.