Sperry instrument DM-2000, DM-2001 Operating Instructions Manual

OPERATING INSTRUCTIONS

DM-2000/DM-2001

DIGITAL MULTIMETER

WITH AC/DC CLAMP SENSOR

P

LEASE READ THESE OPERATING INSTRUCTIONS CAREFULLY

M

isuse and or abuse of these instruments cannot be prevented by any printed
word and may cause injury and/or equipment damage. Please follow all these
i

nstructions and measurement procedures faithfully and adhere to all standard

industry safety rules and practices.

1

. SAFETY WARNINGS

This instrument has been designed and tested according to IEC Publication 61010: Safety
Requirements for Electronic Measuring Apparatus. This instruction manual contains warnings
and safety rules which must be observed by the user to ensure safe operation of the instrument
and to retain it in safe condition. Therefore, read through these operating instructions before
starting using the instrument.

• Read through and understand instructions contained in this manual before starting to
use the instrument.

• Save and keep the manual handy to enable quick reference whenever necessary.

• Be sure to use the instrument only in its intended applications and to follow measurement
procedures described in the manual.

• Be sure to understand and follow all safety instructions contained in the manual.

Failure to follow the above instructions may cause injury, damage to the instrument and/or
damage to equipment under test.

The symbol indicated on the instrument means that the user must refer to related parts of
t

he manual for safe operation of the instrument. Be sure to carefully read the instructions

following each symbol in this manual.

DANGER is reserved for conditions and actions that are likely to cause serious or
fatal injury.

WARNING is reserved for conditions and actions that can cause serious or fatal injury.
CAUTION is reserved for conditions and actions that can cause minor injury or

instrument damage.

!

!

!

!

!

• Never make measurement on circuits with a maximum voltage difference of 600VAC/DC
or greater between conductors (300VAC/DC or greater between a conductor and ground).

• Do not attempt to make measurement in the presence of flammable gasses. Otherwise,
the use of the instrument may cause sparking, which leads to an explosion.

• Never attempt to use the instrument if its surface or your hand is wet.

• Do not exceed the maximum allowable input of measuring ranges.

• Never open the battery compartment cover while making measurement.

A.W. SPERRY INSTRUMENTS, INC.

2

45 MARCUS BLVD., HAUPPAUGE, NEW YORK 11788

Phone: [phone] Toll Free (N.Y. and Alaska call collect 631-231-7050)

Fax: [phone]

!

• Never attempt to make any measurement, if any abnormal conditions are noted, such
as broken case, cracked test leads and exposed metal parts.

• Do not turn the Function Selector Switch while the test leads are connected to the circuit
under test.

• Do not install substitute parts or make any modification to the instrument. Return the
instrument to Sperry for repair or re-calibration.

• Do not try to replace the batteries if the surface of the instrument is wet.

•

Always disconnect the clamp sensor and the test leads from the circuit under test and
s

witch off the instrument before opening the battery compartment cover for battery

r

eplacement.

!

• Make sure that the Function Selector Switch is set to an appropriate position before
making measurement.

• Always make sure to place the test leads in the test lead holder before making current
measurement.

• Do not expose the instrument to the direct sun, extreme temperatures or dew fall.

• B

e sur

e to set the Function Selector Switch to the "OFF" position after use. When the
instrument will not be used for a long period of time, place it in storage after removing
the batteries.

• U

se a damp cloth and deter

gent for cleaning the instrument. Do not use abrasives or

solvents.

!

SPERRY

10/04 Form #325

•

. SAFETY WARNINGS

!

!

!

!

!

!

!

!

•

1

. FEATURES

2

This instrument has been designed and tested according to IEC Publication 61010: Safety
Requirements for Electronic Measuring Apparatus. This instruction manual contains warnings
and safety rules which must be observed by the user to ensure safe operation of the instrument
and to retain it in safe condition. Therefore, read through these operating instructions before
starting using the instrument.

• Read through and understand instructions contained in this manual before starting to
use the instrument.

• Save and keep the manual handy to enable quick reference whenever necessary.

• Be sure to use the instrument only in its intended applications and to follow measurement
procedures described in the manual.

• Be sure to understand and follow all safety instructions contained in the manual.

Failure to follow the above instructions may cause injury, damage to the instrument and/or
damage to equipment under test.

The symbol indicated on the instrument means that the user must refer to related parts of
t

he manual for safe operation of the instrument. Be sure to carefully read the instructions

following each symbol in this manual.

DANGER is reserved for conditions and actions that are likely to cause serious or
fatal injury.

WARNING is reserved for conditions and actions that can cause serious or fatal injury.
CAUTION is reserved for conditions and actions that can cause minor injury or

instrument damage.

• Never make measurement on circuits with a maximum voltage difference of 600VAC/DC
or greater between conductors (300VAC/DC or greater between a conductor and ground).

• Do not attempt to make measurement in the presence of flammable gasses. Otherwise,
the use of the instrument may cause sparking, which leads to an explosion.

• Never attempt to use the instrument if its surface or your hand is wet.

• Do not exceed the maximum allowable input of measuring ranges.

• Never open the battery compartment cover while making measurement.

• Never attempt to make any measurement, if any abnormal conditions are noted, such
as broken case, cracked test leads and exposed metal parts.

• Do not turn the Function Selector Switch while the test leads are connected to the circuit
under test.

• Do not install substitute parts or make any modification to the instrument. Return the
instrument to Sperry for repair or re-calibration.

• Do not try to replace the batteries if the surface of the instrument is wet.
Always disconnect the clamp sensor and the test leads from the circuit under test and

•
s

witch off the instrument before opening the battery compartment cover for battery

eplacement.

r

• Make sure that the Function Selector Switch is set to an appropriate position before
making measurement.

• Always make sure to place the test leads in the test lead holder before making current
measurement.

• Do not expose the instrument to the direct sun, extreme temperatures or dew fall.

• B

• U

e to set the Function Selector Switch to the "OFF" position after use. When the

e sur
instrument will not be used for a long period of time, place it in storage after removing
the batteries.

se a damp cloth and deter

solvents.

WARNING

DANGER

ARNING

W

AUTION

C

gent for cleaning the instrument. Do not use abrasives or

• Permits AC/DC current measurement up to 60A using a clamp sensor that comes standard
with the instrument

• Open Jaw Current Clamp Sensor for ease of use in crowded cable areas and other tight places

• Auto-power-save function

• Continuity Buzzer

• Data hold function to freeze the readings

• LCD with a 3400 count full scale bar graph

• Shock absorbing holster allows easy lead storage

• Designed to international safety standard IEC61010-1: over-voltage category CAT.
and pollution degree 2.

• UL listed to both US and Canadian Standards

• Limited One Year Warranty

. SPECIFICATIONS

3

• Measuring Ranges and Accuracy (at 23ºC
AC Current A

MODEL Range Measuring Range Accuracy

2000 60A 0-60.0A 2.0%rdg
2001 100A 0-100.0A 2.0%rdg

DC Current A

MODEL Range Measuring Range Accuracy

2000 60A 0-
2001 100A 0-

AC Voltage V Input impedance: 10M

Range Measuring Range Accuracy

3.4V
3

4V
340V
600V

DC Voltage V Input impedance: 10M Ω

Range Measuring Range Accuracy

340mV

3.4V
34V

340V
600V

Resistance Ω /

Range Measuring Range Accuracy

340 Ω

3.4k Ω
34k Ω

340k Ω

3.4M Ω
2

4M Ω

Fre

quency Hz

Range Measuring Range Accuracy

Current 0-3.399kHz / 3.4kHz-10kHz

Voltage 0-3.399kHz / 3.4kHz-33.99kHz/34kHz-300kHz

omagnetic

Electr

compatibility ACV/DCV/OHMS/FREQUENCY total accuracy = specified accuracy

IEC 61000-4-3) ACA/DCA total accuracy = specified accuracy+5dgt RF transmitters such as mobile

(

. FEATURES

•

2

• Permits AC/DC current measurement up to 60A using a clamp sensor that comes standard
with the instrument

• Open Jaw Current Clamp Sensor for ease of use in crowded cable areas and other tight places

• Auto-power-save function

• Continuity Buzzer

• Data hold function to freeze the readings

• LCD with a 3400 count full scale bar graph

• Shock absorbing holster allows easy lead storage

• Designed to international safety standard IEC61010-1: over-voltage category CAT.

III, 300V

and pollution degree 2.

• UL listed to both US and Canadian Standards

• Limited One Year Warranty

. SPECIFICATIONS

3

• Measuring Ranges and Accuracy (at 23ºC±5ºC, relative humidity 75% or less)
AC Current A
MODEL Range Measuring Range Accuracy

2000 60A 0-60.0A 2.0%rdg
2001 100A 0-100.0A 2.0%rdg

±

5dgt(50/60Hz)

±

5dgt(50/60Hz)

DC Current A

MODEL Range Measuring Range Accuracy

2000 60A 0-

±

60.0A 2.0%rdg ±5dgt(50/60Hz)

2001 100A 0-±100.0A 2.0%rdg ±5dgt(50/60Hz)

AC Voltage V Input impedance: 10M

Range Measuring Range Accuracy

3.4V
3

4V

340V

0-600V

(Auto ranging)

±

1

.5rdg

±

5

dgt(50-400Hz)

600V

• Safety Standard IEC 61010-1

• Operating System Dual integration

• Display Liquid crystal display with maximum reading of 3399

• Over Input Indication “OL” on the LCD ( Ω ranges only)

• Auto-ranging Operation Shifts to the next higher range when bar graph

•

Sample Rate Numeric reading: about 400ms,

• Accuracy-insured 23
Temperature and (without condensation)
Humidity Ranges

•

Operating Temperature 0-40
and Humidity Range (without condensation)

• Storage Temperature -20-60
and Humidity Range (without condensation)

• Source Two 1.5VDC R03 (UM-4) “AAA” batteries

• Current Consumption Approx. 10mA

• Power-save Function Shifts to the power-save state about 10 minutes after

DC Voltage V Input impedance: 10M Ω

Range Measuring Range Accuracy

340mV

3.4V
34V

0-600V

(Auto ranging)

±

1.5rdg±4dgt
340V
600V

Resistance Ω /

Range Measuring Range Accuracy

340 Ω

3.4k Ω
34k Ω

340k Ω

3.4M Ω
2

4M Ω

Fre

quency Hz

Measuring Range

0

-33.99M Ω

(Auto-ranging)

Buzzer beeps below 30±10 ΩTT

±

1.0%rdg±3dgt

(Continuity buzzer works on

340 Ω range only)

±

5%rdg±5dgt

±

15%rdg±5dgt

Range Measuring Range Accuracy

Current 0-3.399kHz / 3.4kHz-10kHz

±

0.1%rdg±1dgt

(Auto-ranging)

Voltage 0-3.399kHz / 3.4kHz-33.99kHz/34kHz-300kHz

±

0.1%rdg±1dgt

(Auto-ranging)

• Overload Protection AC/DC current ranges: MODEL2000 AC/DC 72A for

• Withstand Voltage AC3700V for 1 minute between electrical circuit and

• Insulation Resistance 10MÉ∂ or greater at 1000V between electrical circuit

• Conductor Size MODEL2000 Approx. 6mm diameter max.

• Dimensions MODEL2000 128(L) x 87(W) x 24(D)mm

• Weight MODEL2000 Approx. 210g

• Accessories T

omagnetic

Electr

compatibility ACV/DCV/OHMS/FREQUENCY total accuracy = specified accuracy

IEC 61000-4-3) ACA/DCA total accuracy = specified accuracy+5dgt RF transmitters such as mobile

(

RF field

telephones may not be used in close proximity.

1 V/m Altitude 2000M

≤

• Safety Standard IEC 61010-1

• Operating System Dual integration

• Display Liquid crystal display with maximum reading of 3399

III, 300V

• Over Input Indication “OL” on the LCD ( Ω ranges only)

• Auto-ranging Operation Shifts to the next higher range when bar graph

•

Sample Rate Numeric reading: about 400ms,

• Accuracy-insured 23
Temperature and (without condensation)
Humidity Ranges

•

Operating Temperature 0-40
and Humidity Range (without condensation)

• Storage Temperature -20-60
and Humidity Range (without condensation)

• Source Two 1.5VDC R03 (UM-4) “AAA” batteries

• Current Consumption Approx. 10mA

• Power-save Function Shifts to the power-save state about 10 minutes after

• Overload Protection AC/DC current ranges: MODEL2000 AC/DC 72A for

• Withstand Voltage AC3700V for 1 minute between electrical circuit and

• Insulation Resistance 10MÉ∂ or greater at 1000V between electrical circuit

• Conductor Size MODEL2000 Approx. 6mm diameter max.

• Dimensions MODEL2000 128(L) x 87(W) x 24(D)mm

• Weight MODEL2000 Approx. 210g

dgt

• Accessories T

dgt

over-voltage category CAT.Ö°, 300V, pollution degree 2
o

ver-voltage category CAT.Ö†, 600V, pollution degree 2
IEC 61010-2-031
IEC 61010-2-032
IEC 61326 (EMC)

as well as units and annunciators
Bar graph with maximum points of 33

increases to 33 points
Shifts to the next lower range when bar graph
d

ecreases to 3 points

bar graph: about 20ms

ºC±5ºC relative humidity 75% or less

ºC

, relative humidity 85% or less

ºC, relative humidity 85% or less

t

he last switch operation

(current consumption: approx. 10 µ A)

10 seconds

AC/DC current ranges: MODEL2001 AC/DC 120A for

10 seconds
AC/DC voltage ranges: AC/DC 720V for 10 seconds
Resistance ranges: AC/DC 720V for 10 seconds
Frequency ranges: AC/DC 720V for 10 seconds

housing case

and housing case

MODEL2001 Approx. 10mm diameter max.

MODEL2001 128(L) x 92(W) x 27(D)mm

MODEL2001 Approx. 220g

wo R03 (UM-4) “AAA” batteries

Instruction Manual

4. INSTRUMENT LAYOUT

AC/DC Clamp Sensor

DCA
Zero Adjust

nob

K

MODEL2001 MODEL2000

ow to put test lead in.

H

. PREPARATIONS FOR MEASUREMENT

5

(1) Checking battery voltage
Set the Function Selector Switch to any position other than the OFF position. If the
marks on the display are clearly legible without symbol "BATT" showing, battery voltage
is OK. If the display blanks or "BATT" is indicated, replace the batteries according to
section 8: Battery Replacement.

4. INSTRUMENT LAYOUT

5

. PREPARATIONS FOR MEASUREMENT

(1) Checking battery voltage
Set the Function Selector Switch to any position other than the OFF position. If the
marks on the display are clearly legible without symbol "BATT" showing, battery voltage
is OK. If the display blanks or "BATT" is indicated, replace the batteries according to
section 8: Battery Replacement.

AC/DC Clamp Sensor

B

attery Voltage Warning Data Hold

Auto Range Unit

Bar Graph

B

uzzer

M

anual

Range

AC/DC

DCA
Zero Adjust
K

nob

LCD Display

Test Lead

Range Hold Button

D

ata Hold Button

Function Selector Switch

Digital Multimeter

H

olster

H

ow to put test lead in.

Wind the lead around the folder

T

est Leads

AC/DC Clamp Sensor

MODEL2001 MODEL2000

S

PERRY

SPERR

Y

!

!

!

!

!

!

!

!

NOTE

When the instrument is left powered on, the auto-power-save function automatically
shuts the power off; The display blanks even if the Function Selector Switch is set to
a position other than the OFF position in this state. To power on the instr

ument, turn
the Function Selector Switch or press the Data Hold Button. If the display is still
blank, the batteries are exhausted. Replace the batteries.

(2) Make sure that the Function Selector Switch is set to

the appropriate range.

Also make sure that data hold function is
not enabled. If inappr

opriate range is
selected, desired measurement cannot
be made.

(3) Install Test Lead to the Holster on the side of body

It is now possible to measure with seeing
the LCD Display. Keep Test Lead installed
in the Holster.

6. HOW TO MAKE MEASUREMENT

6-1 Cur

r

ent Measur

ement

DANGER

•

In or

der to avoid possible shock hazard, never make measurement on circuits with
a maximum voltage difference of 600VAC/DC or greater between conductors
(300VAC/DC or greater between a conductor and ground).

• Do not make measurement with the test leads connected to the circuit under test.
Never make measur

ement with the batter

y compar

tment cover r

emoved.

CAUTION

• When handling the clamp sensor, exercise caution not to apply excessive shocks or
vibration to the sensor.

• Maximum measurable conductor size is MODEL2000 6mm / MODEL2001 10mm in
diameter

.

!

!

Correct

Wrong

Conductor

Adjust a
conductor to
the center of
the arrow

MODEL 2000 MODEL2001

6-1-1 DC Current Measurement
(1) Set The Function Selector Switch to the “–A” position.

("DC" and "AUTO" marks ar

e shown on the top of the display

.)

(2) T

ur

n the 0 (Zer

o) ADJ knob to set the r

eading of the multimeter to zero. (If this

zer

o adjustment is made incor

r

ectly

, measur

ement errors will result.)

(3) Adjust one of the conductors to the center of the clamp sensor's ar

r

ow

.
(When the position of the conductor is not at the center of the arrow, an error
may occur)

Measur

ed value is shown on the display

.

Note: When current flows from the upside to the underside of the instrument, the

polarity of the reading is positive (+). Otherwise, the polarity of the reading is
negative (-).

6-1-2 AC Current Measurement
(1)

Set the Function Selector Switch to “
(“AC” and “AUTO” marks are shown on the top of the LCD.)

(2) Adjust one of the conductors to the center of the clamp sensor's arrow.

(When the position of the conductor is not at the center of the ar
occur

.)

Measured value is shown on the display.

Note: Unlike DC cur

r

ent measur

not polarity indication either

6-2 V

oltage Measur

ement

•

In or

der to avoid possible shock hazar
with a maximum voltage dif
conductors (300VAC/DC or greater between a conductor and ground).

• Do not make measurement with the battery compartment cover removed.

6-2-1 DC V

oltage Measur

ement

(1)

Set the Function Selector Switch to “
("DC" and "AUTO" marks ar

e shown on the top of the LCD.)

(2)

Connect the r

ed test lead to the positive (+) side of the cir
the black test lead to the negative (-) side. Measured voltage value is shown
on the display.
When the connection is reversed, “-” is shown on the display.

6-2-2 AC Voltage Measurement
(1) Set the Function Selector Switch to “ V.”

(“AC” and “AUTO” marks are shown on the LCD.)

(2) Connect the test leads to the circuit under test.

Measured voltage value is shown on the display.

6-3 Resistance Measurement

• Never make measurement on circuits that are live.

• Never make measurement with the battery compartment cover removed.

(1) Set the Function Selector Switch to “Ω /.”
(2) Check that the display shows over-range. Short the test leads and check that

the buzzer beeps and the display r

(3) Connect the test leads to the circuit under test. Measured resistance value is

shown on the display. When the measured value is below about 30 Ω , the
buzzer beeps.

Note: When the test leads are shorted, the display may read a small resistance value.

This is the resistance of the test leads.
If ther

e is an open in either of the test leads, "OL" is shown on the display

340 Ω range, “ ” is shown on the left side of the LCD.

•

•

!

!

!!!

•

!

!

!

!

!

!

!

!

Note: When current flows from the upside to the underside of the instrument, the

•

•

!

!

!

!

!

•

polarity of the reading is positive (+). Otherwise, the polarity of the reading is
negative (-).

6-1-2 AC Current Measurement

Set the Function Selector Switch to “

(1)

(“AC” and “AUTO” marks are shown on the top of the LCD.)

(2) Adjust one of the conductors to the center of the clamp sensor's arrow.

(When the position of the conductor is not at the center of the ar

.)

occur
Measured value is shown on the display.

ent measur

Note: Unlike DC cur

not polarity indication either

oltage Measur

6-2 V

r

ement

ement, zer

.

A."

row, an error may

o adjustment is not necessary. There is

DANGER

der to avoid possible shock hazar

In or

•
ence of 600V

with a maximum voltage dif
conductors (300VAC/DC or greater between a conductor and ground).

• Do not make measurement with the battery compartment cover removed.

6-2-1 DC V

Set the Function Selector Switch to “

(1)

("DC" and "AUTO" marks ar
Connect the r

(2)

the black test lead to the negative (-) side. Measured voltage value is shown
on the display.
When the connection is reversed, “-” is shown on the display.

oltage Measur

ed test lead to the positive (+) side of the cir

fer

ement

e shown on the top of the LCD.)

d, never make measur

AC/DC or gr

V.”

ement on cir

eater between

cuit under test and

cuits

6-4 Frequency Measurement

• In order to avoid possible shock hazard, never make measurement on circuits with a maxi
mum voltage difference of 600VAC/DC or greater between conductors (300VAC/DC or
greater between a conductor and ground).

• Do not make measurement with the test leads connected to the circuit under test.
Never make measurement with the battery compartment cover removed.
Do not make cur

•

(1) Set the Function Selector Switch to “Hz.”
(2) Measuring frequency of current:

Adjust one of the conductors to the center of the clamp sensor's ar
Measur
Measuring frequency of voltage:
Connect the test leads to the circuit under test. Measured frequency is
shown on the display.

Note: Measuring range of current frequency is 0-10kHz with minimum measurable

input of MODEL2000 16A(T
Measuring range of voltage frequency is 0-300kHz with minimum measurable input of
10V(Typ).
When measuring frequency, do not attach the clamp sensor and the test leads to the
circuit under test simultaneously.

Adjust a
conductor to
the center of
the arrow

6-2-2 AC Voltage Measurement
(1) Set the Function Selector Switch to “ V.”

(“AC” and “AUTO” marks are shown on the LCD.)

(2) Connect the test leads to the circuit under test.

Measured voltage value is shown on the display.

6-3 Resistance Measurement

DANGER

• Never make measurement on circuits that are live.

• Never make measurement with the battery compartment cover removed.

(1) Set the Function Selector Switch to “Ω /.”
(2) Check that the display shows over-range. Short the test leads and check that

the buzzer beeps and the display r

(3) Connect the test leads to the circuit under test. Measured resistance value is

shown on the display. When the measured value is below about 30 Ω , the
buzzer beeps.

Note: When the test leads are shorted, the display may read a small resistance value.

This is the resistance of the test leads.

e is an open in either of the test leads, "OL" is shown on the display

If ther
340 Ω range, “ ” is shown on the left side of the LCD.

eads zero.

. On the

Prohibition

7

7

. OTHER FUNCTIONS

7-1 Auto-Power-Save Function

A small amount of current is consumed even in the power-save state. Make sure to set the
Function Selector Switch to the OFF position when the instrument is not used.

This function helps to avoid unwanted exhaustion of the batteries and helps extend batter
life. The instr
last Function Selector Switch or other switch operation.

etur

o r

T
Button twice to exit the power-save state and enable measurement functions.

ument automatically shifts to the power

n to the nor

6-4 Frequency Measurement

!

!

!

•

DANGER

• In order to avoid possible shock hazard, never make measurement on circuits with a maxi
mum voltage difference of 600VAC/DC or greater between conductors (300VAC/DC or
greater between a conductor and ground).

• Do not make measurement with the test leads connected to the circuit under test.
Never make measurement with the battery compartment cover removed.
Do not make cur

•

(1) Set the Function Selector Switch to “Hz.”
(2) Measuring frequency of current:

Adjust one of the conductors to the center of the clamp sensor's ar
Measur
Measuring frequency of voltage:
Connect the test leads to the circuit under test. Measured frequency is
shown on the display.

Note: Measuring range of current frequency is 0-10kHz with minimum measurable

input of MODEL2000 16A(T
Measuring range of voltage frequency is 0-300kHz with minimum measurable input of
10V(Typ).
When measuring frequency, do not attach the clamp sensor and the test leads to the
circuit under test simultaneously.

rent measurement with the test leads connected to the circuit under test.

row.

ed value is shown on the display

yp)/MODEL2001 10A(Typ).

.

7-2 Data Hold Function
This is a function to freeze a measured value on the display. Press the Data Hold

Button once to hold the current reading. In this data hold state, the reading is held
even if input varies. “H” and “ ” marks are shown on the LCD instead of “AUTO”
mark.
To exit the data hold state, press the Data Hold Button again.

7-3 Range Hold Function
The instrument defaults to auto-ranging (“AUTO” is shown on the LCD).

Pressing the Range Hold Button enables manual selection among measurement
ranges ( mark is shown on the LCD instead of “AUTO” mark)

ess the Range Hold Button to select a higher range.

Pr
To switch from manual range selection to auto-ranging, press down the Range
Hold Button for about one seconds, or turn the Function Selector Switch to
another position before setting it back to the current range.

8. BATTERY REPLACEMENT

• In order to avoid possible shock hazard, always disconnect the test leads from the
cuit under test and set the Function Selector Switch to the OFF position befor

cir
tr

ying to r

SPERRY

Prohibition

7

7

. OTHER FUNCTIONS

7-1 Auto-Power-Save Function

NOTE

A small amount of current is consumed even in the power-save state. Make sure to set the
Function Selector Switch to the OFF position when the instrument is not used.

This function helps to avoid unwanted exhaustion of the batteries and helps extend batter
life. The instr
last Function Selector Switch or other switch operation.

ument automatically shifts to the power

-save state about 10 minutes after the

• Do not mix new and old batteries.

• Install batteries in the orientation as shown inside the battery compartment,

observing correct polarity.

When the battery voltage warning mark "BATT" is shown on the top left corner of the
LCD, replace the batteries. Note that the display blanks and “BATT” mark is not
shown if the batteries are completely exhausted.

(1) Set the Function Selector Switch to “OFF.”
(2) Remove the instrument from the holster.
(3) Loosen the battery-compartment-cover-fixing screw on the lower back of

the instrument.
(4) Replace the batteries with two new R03 (UM-4) “AAA” 1.5V batteries.
(5) Put the batter

y

Batter
Compartment
Cover

y

Batteries

n to the nor

etur

o r

T

. On the

Button twice to exit the power-save state and enable measurement functions.

mal state: T

urn the Function Selector Switch or press the Data Hold

7-2 Data Hold Function

!

!

This is a function to freeze a measured value on the display. Press the Data Hold
Button once to hold the current reading. In this data hold state, the reading is held
even if input varies. “H” and “ ” marks are shown on the LCD instead of “AUTO”
mark.
To exit the data hold state, press the Data Hold Button again.

A.W. Sperry Instruments warrants that this A.W. Sperry

Instrument has been carefully tested, inspected, and

7-3 Range Hold Function
The instrument defaults to auto-ranging (“AUTO” is shown on the LCD).

Pressing the Range Hold Button enables manual selection among measurement
ranges ( mark is shown on the LCD instead of “AUTO” mark)

ess the Range Hold Button to select a higher range.

Pr
To switch from manual range selection to auto-ranging, press down the Range
Hold Button for about one seconds, or turn the Function Selector Switch to
another position before setting it back to the current range.

8. BATTERY REPLACEMENT

WARNING

• In order to avoid possible shock hazard, always disconnect the test leads from the
cuit under test and set the Function Selector Switch to the OFF position befor

cir
tr

ying to r

eplace the batteries.

e

CAUTION

• Do not mix new and old batteries.

• Install batteries in the orientation as shown inside the battery compartment,

observing correct polarity.

When the battery voltage warning mark "BATT" is shown on the top left corner of the
LCD, replace the batteries. Note that the display blanks and “BATT” mark is not
shown if the batteries are completely exhausted.

(1) Set the Function Selector Switch to “OFF.”
(2) Remove the instrument from the holster.
(3) Loosen the battery-compartment-cover-fixing screw on the lower back of

the instrument.

(4) Replace the batteries with two new R03 (UM-4) “AAA” 1.5V batteries.

.

(5) Put the batter

y compar

tment cover back in place and tighten the scr

ew

warranted for one year from the date of purchase by the
original end user, provided the instrument has not been
misused, damaged due to negligence, neglect or
unauthorized repair, abused or used contrary to the
operating instructions. Instruments and proof of
purchase in the form of a legible copy or original of the
sales receipt clearly identifying the distributor, model
number and date of purchase must be returned to A.W.
Sperry Instruments Inc., Attention: Customer Service
Center, 245 Marcus Blvd., Hauppauge, NY 11788,
postage pr
manufacturing defect under warranty. A.W. Sperry shall
be the sole judge of such defect. The liability of A.W.
Sperry Instruments, Inc. shall be limited to the repair or
replacement at its sole option of any defective product.

y

Batter
Compartment
Cover

y

Batteries

Scr

ew

A.W

Phone: [phone] T

. SPERR

e

ew

.

LIMITED WARRANTY

A.W. Sperry Instruments warrants that this A.W. Sperry
Instrument has been carefully tested, inspected, and
warranted for one year from the date of purchase by the
original end user, provided the instrument has not been
misused, damaged due to negligence, neglect or
unauthorized repair, abused or used contrary to the
operating instructions. Instruments and proof of
purchase in the form of a legible copy or original of the
sales receipt clearly identifying the distributor, model
number and date of purchase must be returned to A.W.
Sperry Instruments Inc., Attention: Customer Service
Center, 245 Marcus Blvd., Hauppauge, NY 11788,
postage pr

epaid for examination and verification of
manufacturing defect under warranty. A.W. Sperry shall
be the sole judge of such defect. The liability of A.W.
Sperry Instruments, Inc. shall be limited to the repair or
replacement at its sole option of any defective product.

A.W

. SPERR

Y INSTRUMENTS, INC.

245 MARCUS BLVD., HAUPPAUGE, NEW YORK 11788

Phone: [phone] T

oll Fr

ee (N.Y. and Alaska call collect 631-231-7050)

Fax: [phone]