Eclipse Eclipse MT-1707 Manual

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Melrose, MA 02176 Phone

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MT-1707 3-5/6 True-RMS Digital Multimeter

hington Street

1-800-517-8431

ser’s Manual

Edition, 2016

1. General Information

This digital multimeter is designed and manufactured in compliance with IEC-61010 safety requirements on electronic measuring instruments and hand-held digital multi-meters. It is compli a nt with IEC-61010 requirement s pertaining to 600V CAT IV, 1000V CAT.Ⅲ and requirements on pollution degree 2. Please read carefully this operation manual and pay attention to safety guidelines before operating this meter.

1.1 Safety information

1.1.1 Safety instructions

* Before operating this meter, the operator must observe all standard safety

procedures in the two respects below:

A. Safety procedures against electric shock B. Safety procedures against unintended use

* To ensure your personal safety, please use the test lead that accompanies

the meter. Before operatin g this meter, ensure that the test lead is flawless.

1.1.2 Safety considerations

* When the me ter is used in t he vicinity of the equipment that produces

strong electromagnetic interferences, the reading on the meter will grow unstable and even produce serious errors.

Don't operate the meter or pen-s

damaged.

The safety function of the meter will become null if the meter is not

roperly operated.

The meter must be operated with great care when working in the vicinity of

n exposed conductor or bus line.

The meter is prohibited from being used in the vicinity of any explosive gas,

apor or dust.

The measurement must be made w ith correct input termi nal s and fun ctions

nd within the allowable measuring range.

To prevent

exceed the extremes allowed by each measuring range.

* When the meter has already been connected to the line being measured,

the operator is prohibited from touching the input terminal that is not in service.

When the voltage measured exceeds 60Vdc or 30Vac (valid value), the

* When making measurement with a test lead, place your fingers behind its

protective ring.

When switching to another measuring range, be sure that test lead has

already been taken off the measured circuit.

the meter from being damaged, the value to b e input shall not

perator shall be careful enough to avoid electric shock.

haped meter whose appearance is

* For all DC fun c tions, to p revent potential electric shock as a result of

incorr ect reading, please first use AC functions t o c heck the absence of any A V voltage. Then, select DC voltage measuring range equivalent to or greater than that for AC volt age .

Before the tests on electric resistance, diode, capacitor or continuity, the

perator must cut off the power supply to the circuit to be measured , and

o discharg e all high-voltage capacitors within the circuit to be measured.

* The electric resistance measur ement or continuity test cannot be carried

out in any live electrical circuit.

* Before the current measurement, the operator must first examine the

protective tube of the meter. Before conn ectin g the meter to the circui t to be measured, the operator must first power off the afores aid circuit.

* Before repairing TV sets or mea suring power switching circuit, the operator

must be careful enough to prevent high amplitude voltage impulse from damaging the meter.

This mete r uses 4 x 1.5V AA batteries t hat must be correctly insta lled into

he battery compartment.

When

appears, the batteries must be replaced immediately. The low level of a battery will r esult in incorrect rea ding on the meter, which is likely to bring electric shock or personal injury to the operator.

In measurement, category III voltage and ca tegory IV volt age shall not

xceed 1000V and 600V respectively.

The meter shall not be in s

ervice if its case (or part of its case) is dismantled.

1.1.3 Safety symbol:

The safety symbols that appear on the meter's body and in this Operation Manual:

arning, an important safety symbol . The operator must consu l t this Operation Manual before using the meter. Unintended use may lead to the damage to the device or its components.

C (alternating current)

C (direct current) C/DC

A G

round

ouble insulation protection

Compliant with European Union Directive H

igh voltage warning

CAT. III 1000 V

CAT. IV 600 V

over-vol t age protection

1.1.4 Maintenance practices for safety

* The operator must first pull out the test lead when the me ter's case is

opened or the battery cover is dismantled.

* The designated replacement pa rts must be used at the moment of

maintenance.

*The operator must cut off all relevant power supplies before opening the

meter. At the same time, the operator must avoid damage to the meter's elements by ensure that he himself doesn't carry any static.

*The meter can only be calibrated, repaired and maintained by

professionals.

* When the meter's case is opened, the operator must understand the fact

that the presence of some capacitance may promise the dangerous voltages even if the power supply to the meter is cut off.

*The operator should stop using and maintai n the me ter im mediat ely if any

abnormality has been observed on the meter. The operator must see to it

hat the meter cannot be in service unless it is proved conforming.

* When the meter is left idle for a long period, the operator shall remove the

battery and place it in a place free from high temperature and humidity.

1.2 Input protection measures

* The meter can sustain the maximum input voltage of 1000V (DC) or 750V

(AC) at the moment of voltage measurement.

* The meter can sustain the maximum AC voltage of 600V or equivale nt

voltage (valid value) when the tests on frequency, electric resistance c

ontinuity and diode are carried out.

* The protective tube (FF600mA/1 000V) is used f or protection purpose wh en

µA and mA current measurements are carried ou t.

2. A Schematic Diagram for the Meter

This meter is a hand-held digital multi-meter with the function of displaying True RMS. it is a large-screen LCD unit with backlight and illumination light functions so that the user can easily recognize reading. It is equipped with the function of overload protection and the indicator of battery under voltage. Either for professionals, factorie s, s chool s, en thu siasts or households, it is an ideal multi-functional meter .

2.1 A Schematic Diagram for the Meter

Physical appearance

①.Non-contact voltage detection area ②. Non-contact voltage indicator ③.LCD screen ④.key ⑤ .Rotary switch ⑥.input socket

2.2 Description of the symbols on the display unit

appears.

℃，℉

NCV

Live

g. 1 (Display panel)

able.1 Symbols

Symbol Description

attery Under Voltage indicator/ Low Battery

To a v oid electric shock or personal injury as a result of incorrect reading, promptly replace the battery when the battery under voltage indicat or

Auto power off indicat or High voltage warning Negative input polarity indicator Input voltage AC Input voltage DC Switching on/off test mode Diode test mode Automatic range measurement mode Data hold mode Unit of temperature(℃: Celsius; ℉: Fahrenheit) Duty ratio Non-contact AC volt age detection mode Live line judgment mode

Table.1 Symbols (Continued)

mV：

Millivolt，1x10-3 or 0.001 volt.

Ampere, t he unit of current.

Ω

MΩ:

Megaohm, 1,000,000 ohm.

Hz, the unit of frequency

Farad, the unit of capacitance.

Key

Description of functions

mode.

15 minutes.

V, mV

V: the unit of volt

A, mA, µA

mA:

µA: Ω:

, kΩ, MΩ

MkHz

kΩ:

Hz: KHz: MHz:

mF,µF, nF

mF: µF: nF:

2.3 Description of functional keys

SEL keys, e.g. Temperature measurement position: ℃ mode or ℉ mode. Frequency measurement position: HZ measurement

SEL

mode or duty ratio (%) measurement mode AC voltage position and AC current position: press the key to select voltage/frequency mode or current/frequency mode in the AC voltage measurement mode or AC current measurement

Press the key to hold the measured value for the current moment Press the key again to cancel this function.

Press the key, the backlight and the illumination indicator will be on; however, with another press on the same ke y, you will turn off back light and illumination indicator . If you don't press the key at all, the function will automatically be disenabled in

Milliampere, 1x10-3 or 0.001 ampere. Microampere, 1x10 ampere. Ohm, the unit of elect ric resistan c e. Kilohm, 1000 Ohm

KHz, 1x103 Hz. MHz, 1x10

Millif arad, 1x10-3 or 0.001 farad. Microfarad, 1x10 nF, 1x10

Hz or 1000 KHz.

-6

-9

or 0.000001 farad.

or 0.000000001 farad.

-6

or 0.000001

2.4 Description of input socket

input socket

Description

plugs of exclusive multi-function tes t sockets.

judgment.

test lead in red).

Operation Manual

X 1

Test lead

X 1 pair

K-Type thermoc ouple

X 1

All public input terminals to be measured are

COM

℃/℉

VΩ Hz% lives

connected to test leads in black or the public output

Positive input terminals (connected to a test lead in red) for capacitor measurement, diode measurement, beep o n/off test, te m perature measurement, voltage measurement, electric resistance, frequency, duty ratio and live/earth line

A mA

10A

µA and mA positive input terminal (connected to a

10A positive input terminal (connected to a test lead in red).

2.5 Accessories

  

3. Operational guidelines

3.1 Normal operation

3.1.1 Hold mode

In the hold mode, the reading can be maintained on the display uni t. Changing the measurement function position or pres sing the key. Hold again to exit the hold mode Hold mode: entry and exit

Press the key “H” and the reading will be held and the symbol “ ” will

appear on the LCD screen.

2. Press the key “H” again to restore the meter to its status for normal measurement.

3.1.2 Backlight & lighting

The meter is equipped with the functions of backlight and lighting so tha t the operator can access measurement results even if h e is in a darker p lace. The backlight function can be enabled or disenabled by the steps below:

current or 750V for AC current.

1. Press the key to enable backlight and illumination light.

Press the key again to manually disenable backlight and

illumination light; wait for 15 seconds until the backlight and illumination light are automatically disenabled.

3.1.3 Auto power off

If no operations are made in 15 seconds following the initialization, the meter will sound to remind the operator to automatically cu t off power supply and enter the state of dormancy. The meter can be rebooted w hen the operator presses any key in the auto power off mode.

3.2 Measurement guidelines

3.2.1 Measurement of AC voltage and DC voltage

To avoid any electric shock and/or damage to the meter, do not attempt a voltage measurement if the voltage (valid value) is 1,000V for DC current or 750V for AC current. To avoid any electric shock and/or damage to the meter, don't attempt to impose between any public terminal and ground any voltage whose valid value is over 1,00 0V f or DC

The meter provides DC voltage measuring ranges as follows: 600.0mV,

6.000V, 60.00V , 600.0V and 1000V, and AC voltage measuring ranges :

6.000V, 60.00V, 600.0V and 750V. Measurement of AC volt age or DC voltage

 Turn the rotary switch to the position ～V or  Connect the test lead in black and test lead in red to COM input socket

and V input socket respectively.

 Use another two ends of the test lead to measure the voltage of the

circuit to be measured. (In parallel connection with the circuit to be measured)

 Read the measured voltage value on LCD screen. When DC voltage

measurement is attempted, the display unit wil l show the vo ltage polarity of the circuit connected to the pen-shaped meter in red.

Notes:

 Within the measuring range of DC voltag e of 600m V and AC voltage of

6V, even if there is no input or no connection to the test lead, the meter will displ a y some information. In thi s situation, p r ess short circuit “V－ Ω” and “COM” terminal to reset the meter to zero.

measured and fully discharged all high-voltage capacitors.

 Within the AC vol t age fun ction , pre s s the key "SEL" to mea sure the

frequency of the AC voltage source. Please refer to the relevant part for frequency measurement.

 The value of the AC voltage measured with this meter is True RMS (root

mean square). These measuremen t s are ac cura te for sine wave and other waves (without DC offset), square wave, triangular wave and step wave.

3.2.2 Electric resistance measurement

To avoid the meter or the measured equipment from damage, do not attempt a resistance measureme nt unles s the operator has already cut off all power sources for the circuit to be

Ohm is the unit of electric resistanc e (Ω). The measuring ranges of electric resistance of thi s meter are 600.0Ω,

6.000kΩ, 60.00kΩ, 600.0kΩ, 6.000M Ωand 60.00MΩ, Measurement of electric resis ta nce

1. Turn the rotary sw itch to the appro priate position.

2. Connect the test lead in black and test lead in red to COM input socket and V/Ωinput socket respectively.

3. Use another two ends of the test lead to measure the electric

resistance of the circuit to be measured.

4. Read the measured electric resistance value on LCD scree n.

Notes:

 The measured value of the electric resis ta nce of the circ uit differs a

bit from the rated value of the electric resistance.

 To ensure measurement accuracy, in attempting a low resistance

measurement, first put two pen-shaped meters in short circuit and capture the resistance reading of these short circuits. Then subtract the aforesaid reading from the measured resistanc e.

 At 60MΩposition, you have to wait a few seconds before the reading

grow stable. This is quite normal for a high resistance measurement.

 When the meter is in open circuit, the display unit will show "OL" that

indicates the measured value is over the measuring range .

3.2.3 Diode test

fully discharged all high-voltage capacitors.

do not attempt a capacitance measurement unless the

To avoid the meter or the measured equipment from damage, do not attempt a diode test unless the operator has already cut off all power sources for the circuit to be measure d and

Diode test outside the circuit:

1. Turn the rotary sw itch to the position

2. Connect the test leads in bl ac k and in red to COM input sock et an

V/Ωi

nput socket respectively.

3. Connect the test leads in black and in red to the positive and

negative poles of the diode to be tested respectively.

4. The meter displays the forward bias value of the diode to be tested. If

the polarity of the test lead is reversed, the m eter will dis play "OL". A normal diode still produces a forward voltage drop of 0.5V to 0.8V; the reverse bias voltage reading depend on the variation in electric resistance of other channels between two pen-shaped meters.

3.2.4 Beep continuity test

To avoid the meter or the measured equipment from damage, do not attempt a beep continuity test unles s the opera t or ha s already cut off all power sources for the circui t to be measured and fully discharged all high-voltage capacitors.

Steps for a continuity test :

1. Turn the rota ry switch to the position