Extech MM560A, MM570A Operating Manual

User’s Guide

MultiMaster™ Digital MultiMeter Series
With PC Interface

Models:
MM560A
MM570A

A

2

1) SAFETY

This manual contains information and warnings that must be followed for operating the
instrument safely and maintaining the instrument in a safe operating condition. If the
instrument is used in a manner not specified by the manufacturer, the protection
provided by the instrument may be impaired. The meter is intended only for indoor use.

The meter protection rating, against the users, is double insulation per IEC61010-1 2nd
Ed., EN61010-1 2nd Ed., UL61010-1 2nd Ed. and CAN/CSA C22.2 No. 61010.1-0.92
to Category III 1000 Volts AC & DC and Category IV 600 Volts AC & DC.

MM560A Terminals (to COM) measurement category:

V : Category III 1000 Volts AC & DC, and Category IV 600 Volts AC & DC.
A / mAμA : Category III and Category IV 600 Volts AC and 300 Volts DC.

MM570A Terminals (to COM) measurement category:

V / A / mAμA : Category III 1000 Volts AC & DC, and Category IV 600 Volts AC & DC.

Per IEC61010-1 2nd Ed. (2001) Measurement Category
Measurement Category IV (CAT IV) is for measurements performed at the source of

the low-voltage installation. Examples are electricity meters and measurements on
primary overcurrent protection devices and ripple control units.

Measurement Category III (CAT III) is for measurements performed in the building
installation. Examples are measurements on distribution boards, circuit- breakers,
wiring, including cables, bus-bars, junction boxes, switches, socket-outlets in the fixed
installation, and equipment for industrial use and some other equipment, for example,
stationary motors with permanent connection to the fixed installation.

Measurement Category II (CAT II) is for measurements performed on circuits directly
connected to the low voltage installation. Examples are measurements on household
appliances, portable tools and similar equipment.

TERMS IN THIS MANUAL

WARNING

identifies conditions and actions that could result in serious injury or even

CAUTION

death to the user.
identifies conditions and actions that could cause damage or malfunction

in the instrument.

WARNING

3

To reduce the risk of fire or electric shock, do not expose this product to rain or
moisture. To avoid electrical shock hazard, observe the proper safety precautions
when working with voltages above 60 VDC or 30 VAC rms. These voltage levels pose
a potential shock hazard to the user. Do not touch test lead tips or the circuit being
tested while power is applied to the circuit being measured. Keep your fingers behind
the finger guards of the test leads during measurement. Inspect test leads, connectors,
and probes for damaged insulation or exposed metal before using the instrument. If
any defects are found, replace them immediately. Do not measure any current that
exceeds the current rating of the protection fuse. Do not attempt a current
measurement to any circuit where the open circuit voltage is above the protection fuse
voltage rating. Suspected open circuit voltage should be checked with voltage
functions. Never attempt a voltage measurement with the test lead inserted into the

μA/mA or A input jack. Only replace the blown fuse with the proper rating as specified
in this manual.

CAUTION

Disconnect the test leads from the test points before changing functions. Always set
the instrument to the highest range and work downward for an unknown value when
using manual ranging mode.

INTERNATIONAL ELECTRICAL SYMBOLS

Caution ! Refer to the explanation in this Manual

!

Caution ! Risk of electric shock
Earth (Ground)
Double Insulation or Reinforced insulation

Fuse
AC--Alternating Current
DC--Direct Current

2) CENELEC Directives

The instruments conform to CENELEC Low-voltage directive 2006/95/EC and
Electromagnetic compatibility directive 2004/108/EC

3) PRODUCT DESCRIPTION
Panel Illustration

4

1) 5-4/5 digits 500000
counts LCD display

2) Push-buttons for special

1

functions & features

3) Selector to turn the

2

Power On or Off and
Select a function

A

4) Input Jack for 10A (+)

3

(20A for 30sec) current,
and for T2 (-) function

5) Input Jack (+) for all
functions EXCEPT current

4

μ

A, mA, A) and T2

(
functions

5

6) Common (Ground
reference) Input Jack (-)
for all functions EXCEPT
T2 function

6

7) Input Jack (+) for
milli-amp, micro-amp, and
T2 (+) functions

7

Average sensing RMS calibrated

RMS (Root-Mean-Square) is the term used to describe the effective or equivalent DC
value of an AC signal. Most digital multimeters use average sensing RMS calibrated
technique to measure RMS values of AC signals. This technique is to obtain the
average value by rectifying and filtering the AC signal. The average value is then
scaled upward (calibrated) to read the RMS value of a sine wave. In measuring pure

5

sinusoidal waveform, this technique is fast, accurate, and cost effective. In measuring
non-sinusoidal waveforms, however, significant errors can be introduced because of
different scaling factors relating average to RMS values.

AC True RMS

AC True RMS, normally refers as True RMS, identifies a DMM function that is AC
coupled, and responds accurately only to the effective RMS AC component value
regardless of the waveforms. However, DC component plays an important role in the
distorted non-symmetrical waveforms, and will also be of interest sometimes. A full
wave rectified sine waveform is a good example, and the AC true RMS function will
only give the AC component reading which is at 43.6% of the total effective DC+AC
RMS reading.

DC+AC True RMS

DC+AC True RMS calculates both of the AC and DC components given by the
expression

when making measurement, and can responds
accurately to the total effective RMS value regardless of the waveform. Distorted
waveforms with the presence of DC components and harmonics may cause:

1) Overheated transformers, generators and motors to burn out faster than normal

2) Circuit breakers to trip prematurely

3) Fuses to blow

4) Neutrals to overheat due to the triplen harmonics present on the neutral

5) Bus bars and electrical panels to vibrate

AC Bandwidth

AC bandwidth of a DMM is the range of frequencies over which AC measurements can
be made within the specified accuracy. It is not the frequency measurement function,
and is the frequency response of the AC functions. A DMM cannot accurately measure
the AC value with frequency spectrums beyond the AC bandwidth of the DMM.
Therefore, wide AC bandwidth plays an important role in high performance DMMs. In
reality, complex waveforms, noise and distorted waveforms contain much higher
frequency spectrum than its fundamental.

NMRR (Normal Mode Rejection Ratio)

NMRR is the DMM's ability to reject unwanted AC noise effect that can cause
inaccurate DC measurements. NMRR is typically specified in terms of dB (decibel).
This series has a NMRR specification of > 60dB at 50 and 60Hz, which is a good and
definite ability to reject the effect of AC noise when making DC measurements.

6

CMRR (Common Mode Rejection Ratio)

Common mode voltage is voltage present on both the COM and VOLTAGE input
terminals of a DMM, with respect to ground. CMRR is the DMM's ability to reject
common mode voltage effect that can cause digit rolling or offset in voltage
measurements. This series has a CMRR specifications of > 80dB at DC to 60Hz in
ACV function; and > 120dB at DC, 50 and 60Hz in DCV function. If neither NMRR nor
CMRR specification is specified, a DMM's performance will be uncertain.

Analog bar-graph

The analog bar graph provides a visual indication of measurement like a traditional
analog meter needle. It is excellent in detecting faulty contacts, identifying
potentiometer clicks, and indicating signal spikes during adjustments. Analog bar-graph
is not available in AC+DC True RMS Voltage & Current modes.

4) OPERATION

CAUTION

Before and after hazardous voltage measurements, test the voltage function on a
known source such as line voltage to determine proper meter functioning.

AC Voltage, DC Voltage, DC+AC Voltage, &

In AC Voltage, press
DC Voltage, press
mV Voltage, press

SELECT
SELECT

SELECT

button momentarily to toggle between AC and dBm. In
button momentarily to toggle between DC, and DC+AC. In
button momentarily to select DC, AC, or DC+AC. The new

Hz Line Level Frequency

settings will be saved automatically to the non-volatile memory as power up default. In
DCV and DCmV, press

500000

5-4/5 digits readings. In voltage or current functions, press the

button momentarily to toggle between 4-4/5 digits and

push button

Hz

momentarily to activate or to exit Line Level Frequency measuring function. Line Level
Frequency measuring function is designed especially for noisy electrical high voltage
signals.

Note: In dBm function, power up default reference impedance will be displayed for 1
second before displaying the dBm readings. Press

dBm-

Ω (

RANGE

) button

momentary to select different reference impedance of 4, 8, 16, 32, 50, 75, 93, 110,
125, 135, 150, 200, 250, 300, 500, 600, 800, 900, 1000, up to 1200Ω. The new

impedance value will be saved automatically to the non-volatile memory as power up
default.

dBm

A A A

dBm-Ω

dBm

7

DCV

A A A

ACV

Hz

Note: Line Level Frequency measuring function input sensitivity varies automatically
with voltage (or current) function range selected. The lower the measuring range the
higher the sensitivity. That is, mV function has the highest and the 1000V range has
the lowest as in voltage function ranges. It is recommended to first measure the signal
voltage (or current) level then activate the Hz function in that voltage (or current) range
to automatically get the most appropriate trigger level. When activated from voltage
function, you can also press the

RANGE

button momentarily to select another trigger
level range manually. The analog bargraph pointer will point at the selected trigger
level range scale 1, 2, 3, or 4. If the Hz reading is unstable, select lower sensitivity to
avoid electrical noise. If the reading shows zero, select higher sensitivity.

Hz Logic Level Frequency and % Duty Cycle functions

8

Press

SELECT

button momentarily to toggle between Hz and % (duty cycle) readings.
The new setting will be saved automatically to the non-volatile memory as power up
default. Press

500000

button momentarily to toggle between 5 full digits and 6 full digits

Hz readings.

A A A

Note: Unlike the Line Level Frequency measuring function as previously stated, this
Logic Level Frequency function is set only at the highest input sensitivity for measuring
digital type electronic signals.

T1-T2 Dual Channels Temperature function (MM570 only)

Press

SELECT

button momentarily to toggle between °C and °F readings, and the
new setting will be saved automatically in the non-volatile memory as power up default.
Press T1-T2 (

RANGE

) button momentarily to select T1, T2, or T1-T2 readings.

Note: Insert the banana plug K-type temperature bead probe with correct
polarities. Dual channels T1-T2 readings require 2 probes.

T

2

A A A

T-T

2

1

CF

9

Ω

Resistance,

Press

SELECT

Continuity functions

button momentarily to toggle between Ω and

Continuity functions.
The new setting will be saved automatically to the non-volatile memory as power up
default. Continuity function is convenient for checking wiring connections and operation
of switches. A continuous beep tone indicates a complete wire.

A A

10

CAUTION

Using resistance or continuity function in a live circuit will produce false results and
may damage the meter. In many cases the suspected component must be
disconnected from the circuit to obtain an accurate reading.

Capacitance,

Press

SELECT

button momentarily to toggle between

Diode test function

Capacitance and
Diode test functions. The new setting will be saved automatically to the non-volatile
memory as power up default.

CAUTION

Discharge capacitors before making any measurement. Large value capacitors should
be discharged through an appropriate resistance load.

A A A

Note: Normal forward voltage drop (forward biased) for a good silicon diode is between

0.400V to 0.900V. A reading higher than that indicates a leaky diode (defective). A zero
reading indicates a shorted diode (defective). An OL indicates an open diode
(defective). Reverse the test leads connections (reverse biased) across the diode. The
digital display shows OL if the diode is good. Any other readings indicate the diode is
resistive or shorted (defective).

μ

A, mA, A, and %4-20mA Current functions

11

Insert the red test lead into the correct μA/mA or A input jack. Press

SELECT

button
momentarily to select DC, AC, or DC+AC. The new settings will be saved automatically
to the non-volatile memory as power up default. In DC mA function, neither in AC nor in
DC+AC, press and hold the

%4-20mA

(

) button for 1 second or more to display

Hz

the current digital data in terms of loop current percentage (%) value. It is set at 4mA =
0% (zero) and 20mA = 100% (span) with 0.01% high resolution, which virtually extends
the meters’ capability to test and regulate the externally powered loop current in the
industrial process control applications. The analog bar-graph remains showing the mA
current value to alert the user.

A

A A A

mA

%4-20mA

Warning: When measuring a 3-phase system, special attention should be taken to the
phase-to-phase voltage that is significantly higher than the phase-to-earth voltage. To
avoid exceeding the voltage rating of the protection fuse(s) accidentally, always
consider the phase-to-phase voltage as the working voltage for the protection fuse(s).

12

PC-COMM computer interface capabilities

The instrument equips with an optical isolated interface port at the meter back for data
communication. The optional PC interface kit is required to connect the meter to the PC
computer. The software features a digital display, an analog display, a comparator and
a Data Graphical recorder display. Refer to the README file in the interface kit for
further details.

MAX/MIN RECORDING mode

Press

button momentarily to activate MAX/MIN recording mode. The LCD

REC

annunciators “R” and “MAX MIN” turn on. The meter beeps when new maximum or
minimum reading is updated. Press the button momentarily to read throughout the
Maximum (MAX), Minimum (MIN), and Maximum minus Minimum (MAX-MIN) readings.
Press the button for 1 second or more to exit MAX/MIN recording mode. Auto Power
Off feature will be disabled automatically in this mode.

PEAK Capture

Press the

PEAK

button momentarily to activate PEAK mode to capture voltage or
current signal duration as short as 0.8ms. This mode is available in DC, AC, DC+AC
modes of voltage and current functions. The LCD annunciators “C” & “MAX” turn on.
The meter beeps when new maximum or minimum reading is updated. Press the
button momentarily to read throughout the Maximum (MAX), Minimum (MIN), and
Maximum minus Minimum (MAX-MIN) readings. Press the button for 1 second or more
to exit PEAK capture mode. Auto Power Off feature will be disabled automatically in
this mode.

Relative Zero mode

Relative Zero allows the user to offset the meter consecutive measurements with the
displaying reading as the reference value. Practically MAX/MIN recording feature
readings can also be set as relative reference value. Press the

button momentarily

to activate and to exit Relative Zero mode.

500000 high resolution stable mode

In DC voltage and frequency functions, press the

500000

button momentarily to toggle

between the 4-4/5 digits fast mode and the 5-4/5 digits high resolution mode.

Backlighted display

13

Press the

SELECT

button for 1 second or more to turn on or off the display backlight

function. It will also be turned off automatically after 30 seconds to extend battery life.

Manual or Auto-ranging

Press the

RANGE

will remain in the range it was in, the LCD annunciator
button momentarily again to step through the ranges. Press and hold the button for 1
second or more to resume auto-ranging mode.
Note: Manual ranging mode feature is not available in Hz function.

Hold

The hold function freezes the display for later view. Press the
momentarily to activate or to exit the hold function.

Set Beeper Off

Press the

button momentarily to select manual-ranging mode, and the meter

turns off. Press the

HOLD

button while turning the meter on to disable the push button operating

Hz

button

beeper feature. However, the continuity and Jack Beep input warning features remain.

Beep-Jack™ Input Warning

The meter beeps as well as displays “

InErr

” to warn the user against possible damage

to the meter due to improper connections to the μA, mA, or A input jacks when other
function (like voltage function) is selected.

Intelligent Auto Power Off (APO)

The Intelligent Auto Power Off (APO) mode turns the meter off automatically to extend
battery life after approximately 17 minutes of no activities. Activities are specified as: 1)
Rotary switch or push button operations, and 2) Significant measuring readings of

above 10% of range or non-OL Ω readings. In other words, the meter will intelligently
avoid entering the APO mode when it is under normal measurement s. To wake up the
meter from APO, press the

RECORD

button momentarily or turn the rotary switch to
the OFF position and then turn back on again. Always turn the rotary switch to the OFF
position when the meter is not in use.

Disabling Auto Power Off

Press the

RANGE

button while turning the meter on to disable the Auto Power Off

(APO) feature.

5) MAINTENANCE

14

WARNING

To avoid electrical shock, disconnect the meter from any circuit, remove the test leads
from the input jacks and turn OFF the meter before opening the case. Do not operate
with open case. Install only the same type of fuse or equivalent

Calibration

Periodic calibration at intervals of one year is recommended to maintain meter
accuracy. Accuracy is specified for a period of one year after calibration.

If self-diagnostic message “rE-O” is being displayed while powering on, the meter is
re-organizing internal parameters. Do not switch off the meter then, and it will be back
to normal measurement shortly. However, if self-diagnostic message “C_Er” is being
displayed while powering on, some meter ranges might be largely out of specifications.
To avoid mis-leading measurements, stop using the meter and send it for re-calibration.
Refer to the WARRANTY section for obtaining warranty or repair service.

Trouble Shooting

If the instrument fails to operate, check battery, fuses, leads, etc., and replace as
necessary. Double check operating procedure as described in this user’s manual. If the
instrument voltage-resistance input terminal is subjected to a high voltage transient
(caused by lightning or switching surge to the system) by accident or abnormal
conditions of operation, the series fusible resistors will blow (become high impedance)
like a fuse to protect the user and the instrument. Most measuring functions using this
terminal will then be open circuit. The series fusible resistors and the spark gaps
should then be replaced by qualified technician. Refer to the WARRANTY section for
obtaining warranty or repairing service.

Cleaning and Storage

Periodically wipe the case with a damp cloth and mild detergent; do not use abrasives
or solvents. If the meter is not to be used for periods of longer than 60 days, remove
the battery and store it separately.

15

Battery and Fuse replacement

Battery use:

9V alkaline battery NEDA1604A, JIS6AM6 or IEC6LF22

MM560:

Fuse (FS1) for μAmA current input: 1A/600V, IR 10kA or better, F fuse;
Fuse (FS2) for A current input: 10A/600V, IR 100kA or better, F fuse

MM570:

Fuse (FS1) for μAmA current input: 0.44A/1000V, IR 10kA or better, F fuse
Fuse (FS2) for A current input: 11A/1000V, IR 20kA or better, F fuse

Battery replacement:

Loosen the 2 screws from the battery access door of the case bottom. Lift the battery
access door and thus the battery compartment up. Replace the battery. Re-fasten the
screws.

Fuse replacement:

Loosen the 4 screws from the
case bottom. Lift the end of the
case bottom nearest the input
jacks until it unsnaps from the
case top. Replace the blown
fuse(s). Replace the case
bottom, and ensure that all the
gaskets are properly seated
and the two snaps on the case
top (near the LCD side) are
engaged. Re-fasten the screws.

6) SPECIFICATIONS

16

Display:

4-4/5 digits 50,000 counts. Selectable stable mode
5-4/5 digits 500,000 counts for DC Voltage, & 6

Polarity:
Update Rate:

digits 999,999 counts for Hz
Automatic
4-4/5 digits fast mode: 5 per second nominal;
5-4/5 digits stable mode: 1.25 per second nominal;

42 Segments Bar graph: 60 per second max
Operating Temperature:

0°C to 45°C

Relative Humidity: Maximum relative humidity 80% for temperature up

to 31°C decreasing linearly to 50% relative humidity
at 45°C

Pollution degree: 2
Storage Temperature:

-20°C to 60°C, < 80% R.H. (with battery removed)

Altitude: Operating below 2000m
Temperature Coefficie

nt:

nominal 0.1 x (specified accuracy)/ °C @(0°C -­18°C or 28°C -- 40°C), or otherwise specified

Sensing:
Safety:

AC, AC+DC True RMS
Double insulation per IEC61010-1 2nd Ed.,
EN61010-1 2nd Ed., UL61010-1 2nd Ed. &
CAN/CSA C22.2 No. 61010.1-0.92 to Category III
1000V AC & DC and Category IV 600V AC & DC

MM560 Terminals

(to COM) Measurement Category:
V : Category III 1000 Vac & Vdc and Category IV
600 Vac & Vdc.

A / mAμA : Category III and Category IV 600 Vac
and 300 Vdc.

MM570 Terminals (to COM) Measurement Category:

V / A / mAμA : Category III 1000 Vac & Vdc and
Category IV 600 Vac & Vdc.

Overload Protection:

μ

MM560:

A & mA : 1A/600V, IR 10kA or better, F fuse

A : 10A/600V, IR 100kA or better, F fuse

V : 1050Vrms, 1450Vpeak

mV, Ω, & Others : 600 Vdc & Vac rms

μ

MM570

A & mA : 0.44A/1000V, IR 10kA or better, F fus

A : 11A/1000V, IR 20kA or better, F fuse
V, mV, Ω, & Others : 1050Vrms, 1450Vpeak

e

17

Transient protection:
E.M.C.:

Meets EN61326-1:2006 (EN55022, EN61000

8kV (1.2/50μs surge)
EN61000-3-3, EN61000-4-2, EN61000-4-3,

EN61000-4-4, , EN61000-4-5, EN61000-4-6,
EN61000-4-8, EN61000-4-11)

In an RF field of 3V/m Capacitance function is not specified, o

ther function
ranges: Total Accuracy = Specified Accuracy + 100
digits, performance above 3V/m is not specified

Power Supply:

Single Alkaline 9V battery; NEDA1604A, JIS6AM6
or IEC6LF22

Power Consumption:
Low Battery:
APO Timing:

APO Consumption:

6mA typical
Below approx. 7V
Idle for 17 minutes

55μA typical for MM560;
30μA typical for MM570

Dimension: L186mm X W87mm X H35.5mm; L198mm X

-3-2,

Weight:

W97mm X H55mm with holster
390 gm; 500 gm with holster

A

18

Electrical Specifications

Accuracy is ±(% reading digits + number of digits) or otherwise specified, at 23°C ±
5°C & less than 75% relative humidity.

True RMS voltage & current accuracies are specified from 5 % to 100 % of range or
otherwise specified. Maximum Crest Factor < 5:1 at full scale & < 10:1 at half scale,
and with frequency components within the specified frequency bandwidth for
non-sinusoidal waveforms.

DC Voltage

RANGE

500.00 MV,

MM570 MM560

Accuracy

0.02% + 2D 0.03% + 2D

5.0000V, 50.000V

500.00V 0.04%+2D 0.05% + 2D

1000.0V 0.05%+ 2D 0.1%+2D

NMRR: >60DB @ 50/60HZ
CMRR: >120DB @ DC, 50/60HZ, RS=1KΩ
Input Impedance: 10MΩ, 30pF nominal (80pF nominal for 500mV range)

Ohms

RANGE

500.00Ω

MM570 MM560

ccuracy

0.07%+10D

5.0000KΩ

0.1%+6D

50.000KΩ

0.07%+2D

500.00KΩ

5.0000MΩ

50.000MΩ

0.2%+6D 0.4%+6D

2.0%+6D 2.0%+6D

Open Circuit Voltage: < 1.3VDC ( < 3VDC for 500Ω range)
Audible Continuity Tester Audible threshold: between 20Ω and 200Ω Response time <

100μs

dBm At 600Ω, -11.76dBm to 54.25dBm,

Accuracy: ± 0.25dB + 2d (@40Hz -- 20kHz)
Input Impedance: 10MΩ, 30pF nominal

Selectable reference impedance of 4, 8, 16, 32, 50, 75, 93, 110,
125, 135, 150, 200, 250, 300, 500, 600, 800, 900, 1000, 1200Ω

A

AC & AC+DC Voltage
RANGE MM570 MM560

19

ccuracy*

20Hz -- 45Hz 20Hz -- 45Hz

500.00mV,

5.0000V, 50.000V

1.5% + 60d

Unspecified

500.00V, 1000.0V Unspecified
45Hz -- 300Hz 45Hz -- 300Hz

500.00mV 0.3% + 20d

5.0000V, 50.000V 0.8% + 20d

500.00V,

0.4% + 40d

0.8%+60d

1000.0V

300Hz -- 5kHz 300Hz -- 1kHz

500.00mV 0.3% + 10d 0.8%+40d

5.0000V, 50.000V,

500.00V

0.4% + 40d

1000.0V 0.8% + 40d

2.0%+60d

1.0%+40d

(300Hz--1kHz)

5kHz -- 20kHz 1kHz -- 20kHz

500.00mV 0.5%+20d 1dB**

5.0000V, 50.000V 0.8%+20d 2dB**

500.00V 0.5%+20d 3dB**

1000.0V Unspecified Unspecified
20kHz -- 100kHz 20kHz -- 100kHz

500.00mV 2.5%+40d

5.0000V, 50.000V 4.0%+40d**

500.00V Unspecified

Unspecified

1000.0V

From 5% to 10% of range: accuracy % of reading (or in dB) + 80d

*

**From 5% to 10% of range: accuracy % of reading (or in dB) + 180d

**From 10% to 15% of range:

accuracy % of reading (or in dB) + 100d
CMRR: >80dB @ DC to 60Hz, Rs=1kΩ
Input Impedance: 10MΩ, 30pF nominal (80pF nominal for 500mV range)

Residual reading less than 50 digits with test leads shorted.

Diode Tester

20

Range

Accuracy

Test Current

(Typical)

Open Circuit

Voltage

5.0000V 1%+1d 0.4mA < 3.5 VDC

Capacitance
RANGE

Accuracy*

50.00nF 0.8% + 3d

500.0nF 0.8% + 3d

5.000μF

50.00μF

500.0μF**
9999μF**

1.5% + 3d

2.5% + 3d

3.5% + 5d

5.0% + 5d
*Accuracies with film capacitor or better
**In manual-ranging mode, measurements not specified below 45.0μF and
450μF for 500.0μF and 9999μF ranges respectively

DC Current
RANGE Accuracy Burden Voltage

500.00μA

5000.0μA

0.15%+20d

0.1%+20d

0.15mV/μA

0.15mV/μA

50.000mA 0.15%+20d 3.3mV/mA

500.00mA 0.1%+30d 3.3mV/mA

5.0000A 0.5%+20d 45mV/A

10.000A* 0.5%+20d 45mV/A
*10A continuous, >10A to 15A (to 20A for MM570) for 30 second max with 5

minutes cool down interval

AC & AC+DC Current

21

RANGE

MM570

MM560

Burden Voltage

Accuracy

50Hz -- 60Hz

500.00μA

0.15mV/μA

5000.0μA 0.15mV/μA

50.000mA 3.3mV/mA

500.00mA 3.3mV/mA

0.5%
+50d

1.0%
+40d

5.0000A 45mV/A

10.000A* 45mV/A
40Hz – 1kHz

500.00μA

0.15mV/μA

5000.0μA 0.15mV/μA

50.000mA 3.3mV/mA

500.00mA 3.3mV/mA

0.7%
+50d

1.0%
+40d

5.0000A 45mV/A

10.000A* 45mV/A
1kHz – 10kHz

500.00μA

5000.0μA 0.15mV/μA

50.000mA 3.3mV/mA

2.0%

Unspec'd

+50d

0.15mV/μA

500.00mA 3.3mV/mA

5.0000A

Unspec'd Unspec'd 45mV/A

10.000A*

*10A continuous, >10A to 15A (to 20A for MM570) for 30 second max with 5

minutes cool down interval

DC Loop Current: %4--20mA, 4mA = 0% (zero), 20mA = 100% (span),

Resolution: 0.01%,

Accuracy:

25d

±

Peak mode: Accuracy: Specified accuracy ± 100 digits for

changes > 0.8ms in duration

T1-T2 Dual Temperature (MM570 only)
RANGE

Accuracy

-50.0°C to 1000.0°C 0.3%+1°C

-58.0°F to 1832.0°F 0.3%+2°F

Thermocouple range & accuracy not included

22

Hz Line Level Frequency
RANGE Sensitivity (Sine RMS) Range

500mV 100mV 10Hz ~ 200kHz
5V 1V 10Hz ~ 200kHz
50V 10V 10Hz ~ 100kHz
500V 100V 10Hz ~ 100kHz
1000V 900V 10Hz ~ 10kHz
Accuracy: 0.02%+4d

Hz Logic Level Frequency
RANGE

Accuracy

5.0000Hz--2.00000MHz 0.002%+4d

Sensitivity: 2.5Vp square wave

%Duty Cycle
RANGE

Accuracy

0.1% -- 99.99% 3d/kHz+2d

Input Frequency: 5Hz -- 500 kHz, 5V Logic Family

23

WARRANTY

EXTECH INSTRUMENTS CORPORATION (A FLIR COMPANY) warrants
this instrument to be free of defects in parts and workmanship for three
years from date of shipment (a six month limited warranty applies to

sensors and cables). If it should become necessary to return the
instrument for service during or beyond the warranty period, contact the
Customer Service Department at [phone] ext. 210 for authorization
or visit our website www.extech.com

for contact information. A Return
Authorization (RA) number must be issued before any product is returned
to Extech. The sender is responsible for shipping charges, freight,
insurance and proper packaging to prevent damage in transit. This
warranty does not apply to defects resulting from action of the user such
as misuse, improper wiring, operation outside of specification, improper
maintenance or repair, or unauthorized modification. Extech specifically
disclaims any implied warranties or merchantability or fitness for a specific
purpose and will not be liable for any direct, indirect, incidental or
consequential damages. Extech's total liability is limited to repair or
replacement of the product. The warranty set forth above is inclusive and
no other warranty, whether written or oral, is expressed or implied.

Calibration and Repair Services

Extech offers repair and calibration services for the products we sell.

Extech also provides NIST certification for most products. Call the
Customer Care Department for information on calibration services
available for this product. Extech recommends that annual calibrations be
performed to verify meter performance and accuracy.

Technical Support: Extension 200; E-mail: [e-mail]

up-to-the-minute product information, visit our website: www.extech.com

Repair & Returns: Extension 210; E-mail: [e-mail]

Product specifications subject to change without notice

For the latest version of this User Guide, Software updates, and other

Extech Instruments Corporation, 285 Bear Hill Road, Waltham, MA

Copyright © 2009 Extech Instruments Corporation (a FLIR company)

All rights reserved including the right of reproduction in whole or in part in any form.

Support line [phone]

02451

MM560/MM570 V1.0 10/09