1. SAFE TY RULES
•
This meter is designed for indoor use at temperatures between 0°C to 40°C and
altitudes up to 2,000m.
•
To ensure that the meter is used safely, follow all safety and operating instructions in
this operation manual. If the meter is not used as described in this operation manual,
the safety features of this meter might be impaired.
•
Do not use the meter if the meter or test leads look damaged ,or if you suspect that
the meter is not operating properly.
•
When using the instrument, keep your fi ngers behind the fi nger guards on the plastic
casing and probes.
•
Disconnect the live test lead before disconnecting the common test lead.
•
Make sure power is off before cutting, desoldering, or breaking the circuit wires. Small
amounts of current can be dangerous.
•
Do not apply more than 500 VDC or 500V AC rms between a terminal and ground.
•
To avoid electrical shock, use CAUTION when working above 60V DC or 25V AC
rms. Such voltages pose a shock hazard.
•
Never make measurements with the battery cover off.
•
To avoid electrical shock or damage to the meter, do not exceed the input limits.
2. INTERNATIONAL SYMBOLS
Important information
Dangerous Voltages
see manual
Continuity
AC
Ground
DC
Double Insulation
3. TECHNICAL SPECIFICATIONS
3.1 General Specifi cations
Display:
3-1/2 digits LCD, max. of 1999 display
Polarity:
Automatic, (-) negative polarity indication
Zero adjustment:
Automatic
Sample rate:
0.5 Sec.
Over range indication: Only the MSD “1” is displayed
Power:
9-volt battery type NEDA 1604, IEC6F22
Battery life:
Approx. 50 hours. (w/ alkaline batteries)
Dimension:
141 x 69 x 36 mm.
Weight:
Approx. 330g (including battery).
Accesories:
User’s Manual, Alligator Clip, and 9V
alkaline
battery
3.2 Electrical Specifi cations
•
The mark next to the probe tip, is a warning that the input
voltage should not exceed the indicated values. This is to pre-
vent personal injuries and damage to the internal circuitry.
•
The function switches should be set to the function which you
want to test before operation.
•
Accuracies are ±(% of r number of least signi
fi
cant
digits) at 23°C ±5°C, less than 75% RH.
4. OPERATION
4.1 INSTRUMENT DESCRIPTION
1) Case
2) 3-1/2 Digit LCD display
3) Range switch
4) Function switch
5) Fixed test lead with probe
6) Fixed probe tip and fuse cap
7) Battery cover
8) Function / Range table
9) Display hold push button (back of the unit)
Function
Range
Accuracy
Input
Impedance
Remarks
Overload
Protection
DC Voltage
2000mV,20V,
200V, 600V
0.8%+1
1 M
-
600 Vp-p
AC Voltage
200V, 600V
1.5%+10
450 K
50~500Hz
600 Vp-p
DC Current
200 mA
2.0%+2
-
200 mA/
250V Fuse
Resistance
2k
, 20k
,
200k
,2000k
1%+3
-
-
250 Vp-p
Diode Test
Test Current:1.0± 0.6mA
Test Voltage: 3.2 V Max.
250 Vrms
Continuity
Beeps when < 100
Ω
3VDC Max. Test Voltage
250 Vrms
4.2 Measurement Procedures
CAUTION
: Maximum Input Voltage is 500Vrms,do not exceed
this rating to avoid personal injuries or damage to
the instrument. The range switch should be set to
the range you want to test before the operation.
4.2.1 DC Voltage measurement
1
2
3
4
5
6
7
8
9
1 2 3 4
_ _
200
600
2000m 20
200
600
_
200
_
2K
20K 200K 2000K
1 2 3 4 OFF
mA
MAX
600 V
250 V
GTC
CT8012
V V mA
Ω
Ω
_
Ω
V
V
Set the
FUNCTION
switch to
V
and the
RANGE
switch to the
desired range position, according to the
Function/Range Table
.
Proceed to connect the test leads across the source or load under
measurement. If the voltage range is not known beforehand, set
the range switch to the highest range and work down. The polarity
will be indicated when the tip probe is connected.
4.2.2 AC Voltage measurement
Set the
FUNCTION
switch to
V
and the
RANGE
switch to
desired position, according to the
Function/Range Table
.
Proceed to connect the test leads across the source or load under
measurement, and read the measurement on the LCD screen.
V V mA
Ω
1 2 3 4 OFF
200V
600V
20V
2000mV
FUNCTION RANGE
V V mA
Ω
1 2 3 4 OFF
200V
600V
FUNCTION RANGE
CT
8012
