99 Washington Street Melrose, MA 02176
ne 781-665-1400 Toll Free 1-800-517-8431
Pho
MT-1705
3-1/2 True-RMS Multimeter
User’s Ma
1
©2014 Copyrigh
st
Edition
nual
,
okit’s Industries Co., Ltd.
t by Pr
OPERATION MANUAL
SUMMARIZE
The instrument is a stable digital multimeter driven by battery. It comes with
20mm high LCD to make reading more clear. Backlight display and overload
protection make it convenient to use .This instrument features multi functions
for measuring DCV, ACV, DCA,ACA, resistance, capacitance, diode,
continuity and frequency., The instrument utilizes a dual-integral A/D
converter as a key feature and is an excellent tool. It is portable and Ideal for
lab, factory and field use.
AFETY NOTE
S
The meter meets the standards of IEC1010.
Please read the operation manual carefully before operation.
1． Do not input anything over a range limit.
2． Voltage below 36V is safe. To avoid electric shock, check whether the test
leads are connected correctly, whether the insulation is good when
measuring over 36DCV or 25ACV.
3． Remove the test leads when changing function and range.
4． To select correct function and range, make sure the range limit setting is
correct. Start with higher limits and work down to correct level if
uncertain.
5． Do not operate the meter if battery case and back cover is not properly
fixed.
6． Do not input voltage when measuring resistance.
7． Remove test leads from test point and turn off the power before replacing
battery and fuse.
8． SAFETY SYMBOLS
“
“
“
“
HARACTERISTIC
C
1 GENERAL
1.1 Display: LCD displaying.
1.2 Max. displaying: 1999（3 1/2digit）auto polarity indication.
1.3 Measuring method: dual slope A/D conversion.
1.4 Sampling rate: approx. 3 times/second.
1.5 Over range indication: the MSD displays “OL”.
1.6 Low battery indication:“
1.7 Operation environment: （0～40）℃，R.H.<80% .
1.8 Power：
1.9 Size: 150×73.5×35mm
1.10 Weight: approx. 170g（not includes battery）.
1.11 Accessories: operation manual, holster, test leads.
”DANGEROUS VOLTAGE EXISTS，
” GND，“ ”DUAL INSULATION
”THE OPERATOR MUST REFER TO THE MANUAL ，
”LOW BATTERY
” appears.
1.5V AAA×2pcs
1
2 TECHNICAL CHARACTERISTIC
2.1 Accuracy:±(a%× rdg＋d) at (23±5)℃，R.H.<75%，one year guaranteed
from the production date.
2.2 TECHNICAL DATA
2.2.1 DCV
RANGE ACCURACY RESOLUTION
200mV 100uV
2V 1mV
20V 10mV
200V
600V ±(1.0%+10) 1V
Input resistance: All ranges: 10 MΩ
Overload protection: 250V DV or AC peak value at 200mV range.
600V DC or AC peak value at other ranges.
2.2.2 ACV True RMS measurement
Range
40Hz-200Hz 200Hz-1kHz
2v 1mV
±(0.8%+5)
200v
600V ±(1.2%+10)
Input impedance：All ranges 10MΩ
Overload protection：250V DC or AC peak value at 200mV ,
600V DC or AC peak value at other ranges.
Frequency response: 40Hz-1kHz
Display: True RMS
2.2.3 DCA
RANGE ACCURACY RESOLUTION
20mA 10uA
200mA
10A ±(2.0%+5) 10mA
Max. input volt drop: 200mV;
Max. input current: 10A（the test time should be within 10
seconds）
Overload protection: 0.2A/250V fast-blow fuse, no protection at
10A.
±(0.5%+3)
Accuracy
±(0.8%+5) sine
and triangular
wave
±(1.2%+10)
sine and triangular
wave
±(1.2%+8)
2
100mV
±(8.0%+15)
other wave
100uA
Resolution
100mV
1V
2.2.4 ACA True RMS measurement
Range
40Hz-200Hz 200Hz-1kHz
Accuracy
±(1.5%+15)
200mA ±(1.5%+15)
10A ±(3.0%+10)
sine and
triangular wave
±(3.0%+10)
sine and
±(8.0%+15)
other wave
triangular wave
Max. measuring voltage drop：200mV.
Max. input current: 10A (less than 10 seconds).
Overload protection： 0.2A/250V fuse；no protection at 10A.
Frequency response: 40Hz-1kHz.
Display：True RMS
2.2.5
RESISTANCE（Ω）
RANGE ACCURACY RESOLUTION
200Ω ±(0.8%+5) 0.1Ω
20kΩ 10Ω
200kΩ
±(0.8%+3)
20MΩ ±(1.0%+25) 10kΩ
Open voltage: less than 3V.
Overload protection: 250V DC or AC peak value.
NOTE:
t 200Ω range, the test leads should be short-circuited,
1. A
measure
the lead to lead resistance, then, subtract from the real
measurement.
2.
It is normal for reading to be slow when measured va
above 1MΩ, please read it after the display value stabilizes.
2.6 CAPACITANCE (C)
2.
RANGE ACCURACY RESOLUTION
20nF 10pF
200nF 100pF
±(3.5%+20)
2uF
20uF 10nF
200uF 100nF
±(5.0%+10)
2000uF
Overload protection: 250V DC or AC peak value
NOTE: when over range, it can keep on measuring, "OL" will not
show on LCD and the value is for reference only
2.2.7 FREQUENCY
3
Resolution
100uA
10mA
100Ω
and
lue is
1nF
1uF
RANGE ACCURAC
10Hz 0.001Hz
100Hz 0.01Hz
1kHz 0.1Hz
10kHz 1Hz
100kHz 10Hz
2MHz
Input sensivity:1V RMS , overload protection : 250V DC or AC
peak value(less than 15 seconds)
NOTE: when over range, it can keep on measuring, "OL" will not
2.2.8 DIODE AND CONTINUITY TEST
Range Displaying value Test condition
Overload protection: 250V DC or AC peak value
Warning: DO NOT input any voltage at this range for safety!
3 OPERATION
Front panel description
3.1
3.1.1 LCD: display the measured value.
3.1.2
Power/auto power off key: turn on/off
the power and auto power off.
3.1.3 Hold/backlight/function selecting key:
turn on/off hold and backlight key.
3.1.4 Range knob: selecting measuring
function and range .
3.1.5 GND.
3.1.6 10A current test jack.
3.1.7 “+” pole jack of voltage 、resistance、
diode、capacitance and resistance.
3.2 VOLTAGE MEASUREMENT
3.2.1 Insert the black test lead to “COM” jack, the red one to V/Ω/Hz
jack.
3.2.2 Set the range knob to a proper DCV/ACV range, If the measured
±(1.0%+10)
show on LCD and the value is for reference only
Positive voltage
drop of diode
Buzzer sounds ,
the resistance is
less than(50±20)Ω
Y RESOLUTION
100Hz
The positive DC
current is approx.
1mA，negative voltage
is approx. 3V
open voltage is approx.
3V
4
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