OPERATING INSTRUCTIONS
MODEL DSA-680 TRMS
:600A AC/DC Type
MODEL DSA-1020 TRMS
:1000A AC/DC Type
DIGISNAP
SNAP-AROUND
1. Features
Designed to meet international safety standards.
IEC61010-1 & IEC61010-2-032
Measurement Category (CAT.) IV 600V
Pollution Degree 2
Double molded main body provides comfortable single
handed grip
Data Hold Function
LCD Backlight function to facilitate working at dimly lit
situations.
REL function to indicate measurement variation
(Current, voltage, Resistance measurement)
MIN/MAX function enables easy reading of min & max
value during measurement.
PEAK Hold Function enables Peak value measure-
ment of starting current. (only at ACA Range)
With Continuity & Diode Check Function
Capacity measurement of capacitors
Temperature measurement, switchable between ºC
and ºF (with K-type temperature sensor)
NCV (
Ｎ
on Contact Voltage) Function for wiring check
600V input protection
Sleep Function to extend battery life
With Bar Graph, 6039 count display
2. Safety Warnings
This instrument has been designed, manufactured and
tested according to IEC 61010: Safety requirements for
Electronic Measuring apparatus, and delivered in the
best condition after passed the inspection.
This instruction manual contains warnings and safety
rules which must be observed by the user to ensure safe
operation of the instrument and retain it in safe condition.
Therefore, read through these operating instructions
before using the instrument.
WARNING
Read through and understand the instructions
contained in this manual before using the
instrument.
Keep the manual at hand to enable quick reference
whenever necessary.
The instrument is to be used only in its intended
applications.
Understand and follow all the safety instructions
contained in the manual.
It is essential that the above instructions are
adhered to.
Failure to follow the above instructions may cause
injury, instrument damage and/or damage to
equipment under test.
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 injury or instrument
damage.
The symbol indicated on the instrument means that
the user must refer to the related parts in the manual for
safe operation of the instrument. It is essential to read the
instructions wherever the symbol appears in the
manual.
Marks listed in the table below are used on this
instrument.
User must refer to the manual.
Instrument with double or reinforced insulation
Indicates that this instrument can clamp on
bare conductors when measuring a voltage
corresponding to the applicable measurement
category, which is marked next to this symbol.
AC
DC
AC & DC
DANGER
Never make measurement on a circuit in which voltage
over AC600V exists.
Do not attempt to make measurement in the presence
of flammable gasses. Otherwise, the use of the
instrument may cause sparking, which can lead to an
explosion.
Transformer jaw tips are designed not to short the
circuit under test. If equipment under test has exposed
conductive parts, however, extra precaution should be
taken to minimize the poss bility of shorting.
Never attempt to use the instrument if its surface or
your hand is wet.
Do not exceed the maximum allowable input of any
measuring range.
Never open the Battery cover during a measurement.
The instrument is to be used only in its intended
applications or conditions. Otherwise, safety functions
equipped with the instrument doesn’t work, and
instrument damage or serious personal injury may be
caused.
WARNING
Never attempt to make measurement if any abnormal
condi ions, such as broken case and exposed metal parts
are found on the instrument.
Do not rotate the Func ion Switch while he test leads are
being connected.
Do not install substitute parts or make any modification to
the instrument. For repair or re-calibra ion, return he
instrument to your local distributor from where it was
purchased.
Do not try to replace the batteries if the surface of he
instrument is wet.
Disconnect all the cords and cables from the object under
test and power off he instrument before opening he
Battery Cover for Battery replacement.
CAUTION
Set the Function Switch to an appropriate position
before starting measurement.
Firmly insert the test leads.
Disconnect the test leads from the instrument for
current measurement.
Do not expose the instrument to the direct sun, high
temperature and humidity or dewfall.
Be sure to power off the instrument after use. When
the instrument will not be in use for a long period,
place it in storage after removing the batteries.
Use a cloth dipped in water or neutral detergent for
cleaning the instrument. Do not use abrasives or
solvents.
Measurement categories (Over-voltage categories)
To ensure safe operation of measuring instruments,
IEC61010 establishes safety standards for various
electrical environments, categorized as CAT.I to CAT.IV,
and called measurement categories. Higher-numbered
categories correspond to electrical environments with
greater momentary energy, so a measuring instrument
designed for CAT.III environments can endure greater
momentary energy than one designed for CAT.II.
CAT.I
: Secondary electrical circuits connected to an AC
electrical outlet through a transformer or similar device.
CAT.II
: Primary electrical circuits of equipment connected
to an AC electrical outlet by a power cord.
CAT.III
: Primary electrical circuits of the equipment
connected directly to the distr bution panel, and feeders
from the distribution panel to outlets.
CAT.IV
: The circuit from the service drop to the service
entrance, and to the power meter and primary over
current protection device (distr bution panel).
3. Specification
3-1. Measuring range & accuracy
(accuracy guaranteed at 23Cº±5 Cº, humidity 45~85%)
AC Current 600A, 1000A Function
Accuracy
Function
Measuring
Range
DSA -680
DSA -1020
600A
0-600.0A
Peak 1500A
CF=2.5 @
600A
CF=3.0 @
500A
±2.0%rdg±5dgt(50/60Hz)
±3.5%rdg±5dgt(40 ~ 500Hz)
±5.5%rdg±5dgt(500 ~ 1kHz)
* Add 2% at CF>2
1000A
0-1000A
Peak 1500A
CF=2.5 @
600A
CF=3.0 @
500A
N/A
DC Current 600A, 1000A Function
Accuracy
Functon
Measuring
Range
DSA-680 DSA-1020
600A 0-600 0A
±1.5%rdg±5dgt
1000A 600-1000A
N/A
±1 5%rdg±5dgt
AC Voltage Function
（
Auto-ranging, Input impedance: approx. 10M
Ω
）
Accuracy
Range
Measuring
Range
DSA-680 DSA-1020
6/60/600V
0-600.0V
±1 5%rdg±4dgt (50/60Hz)
±3 5%rdg±5dgt (40~400Hz)
DC Voltage Function
（
Auto-ranging, Input impedance: approx. 10M
Ω
）
Accuracy
Range
Measurng
Range
DSA-680 DSA-1020
600mV/6/
60/600V
0-600 0V
±1 0%rdg±5dgt
Resistance (Diode Check/ Continuity/ Capacity) Function
Accuracy
Range
Measuring
Range
DSA-680 DSA-1020
600
Ω
/6k/60k/
600k
Ω
/6M
Ω
0-6 000M
Ω
±1 0%rdg±5dgt
60M
Ω
6.00M-60 00M
Ω
±5%rdg±8dgt
Cont Buzzer
0-600 0
Ω
Buzzer sounds at 100
Ω
or less
Diode
Test voltage: 0-2V
Capacity Function
Accuracy
Functon
Measuring
Range
DSA-680 DSA-1020
40nF
±3.0%±50dgt
400nF
4
μ
F
40
μ
F
0 01nF
- 400
μ
F
Auto-ranging
±2.5%rdg±50dgt
Frequency/ DUTY Function
（
Auto-ranging for Frequency
）
Accuracy
Range
Measuring
Range
DSA-660
DSA-1010
ACA
40Hz - 400Hz
ACV
1Hz～10kHz
±0.5%rdg±5dgt
0.1-99.9%
(Pulse width/Pulse period)
±2.5%rdg±5dgt
Note: Measurable inputs are: 40Vrms@ACV or
50Arms@AC600A, 350A@AC1000A Range
Temperature Function
Accuracy
Function
Measuring
Range
DSA-680
DSA-1020
- 50
º
C ~ 0
º
C
±5
º
C±3dgt
º
C
0
º
C ~ 150
º
C
±3
º
C±2dgt
-58
º
F~ 32
º
F
±7
º
F±2dgt
º
F
32
º
F ~ 302
º
F
±5
º
F±2dgt
3-2. General Specification
Mode of operation
:
∆∑
mode
Display
: max. 6039 counts
(Frequency: 9999, Capacity & Temperature:4039) &
Bar graph
Over-range indication : “OL” displayed when exceeding
the measuring range. (except for AC/DCV and 1000A
Function)
Range switching :
Auto-ranging / Voltage, Resistance, Capacity Range
Single range / Continuity, Diode check, DUTY and
Temperature
Sample rate
: three times per second
Functional construction :
OFF/ ACA/ ACV/ DCA/ DCV/
Ω
/
º
C/
º
F
Keys :
SELECT(AC/DC switching & /
Ω
/ / / ), PEAK
HOLD/ Back Light, REL
∆
,Hz/DUTY, MIN/MAX
Power source : DC3V/ R03(UM-4) x 2pcs
Low battery warning : “ “ mark is displayed at
2.4V±0.15V or less.
Temperature& humidity : 23ºC±5ºC, relative humidity
accuracy guaranteed 85% or less (no condensation)
Operating temperature : 0 ~ 40ºC, relative humidity 85%
& humidity range or less (no condensation)
Storage temperature : -20 ~ 60ºC, relative humidity
& humidity range 85% or less (no condensation)
Current consumption : approx. 25 mA
Sleep Function : Automatically powered off in about
15 min after the last Function switch operation. Rotate the
Function Switch from OFF to any position to exit from the
Sleep state.
Applicable Standards
IEC 61010-1:2001
Measurement CAT. IV 600V Pollution degree 2
IEC 61010-031:2002, IEC 61010-2-032
EMC
：
EN 61326
・
EN 55022
・
EN 61000-4-2(perfomance criterion B)
・
EN 61000-4-3(perfomance criterion B)
Overload Protection
Current Range : 720A AC/ 10 sec @ DSA680
1200A AC/DC/ 10 sec @ DSA1020
Voltage Range : 720V AC/DC/ 10sec
Resistance Range : 600V AC/DC/ 10sec
Withstand Voltage
6880V
AC
（
TRMS 50/60Hz
）
/ 5 sec
(between Jaws and electrical circuit/ between internal
circuit and enclosure)
Insulation Resistance : 10M
Ω
or more/ 1000V
（
between electrical circuit and enclosure
）
Conductor size
DSA-680: approx. 33mm
DSA-1020: approx. 40mm
Dimension
approx. 254(L)×82(W)×36(D)mm / DSA-1020
approx. 243(L)×77(W)×36(D)mm / DSA-680
Weight : approx 300 g @ DSA-680
310g @ DSA-1020
Accessories
Test Leads
ＴＬ
75 / 1 set
K-type Temperature Probe
MODEL8216/ 1 set
Battery R03
（
UM-4
）
/ 2pcs
Instruction manual English, Spanish, French / 1pce
Carrying Case
C90
*Effective Value (RMS)
Most alternating currents and voltages are expressed in
effective values, which are also referred to as RMS
(Root-Mean-Square) values. The effective value is the
square root of the average of square of alternating
current or voltage values. Many clamp meters using a
conventional rectifying circuit have "RMS" scales for AC
measurement. The scales are, however, actually
cal brated in terms of the effective value of a sine wave
though the clamp meter is responding to the average
value. The calibration is done with a conversion factor of
1.111 for sine wave, which is found by dividing the
effective value by the average value. These instruments
are therefore in error if the input voltage or current has
some other shape than sine wave.
*CF (Crest Factor)
is found by dividing the peak value
by the effective value.
Examples: Sine wave: CF=1.414
Square wave with a 1: 9 duty ratio: CF=3
3-3. Function Keys
The “
●
” mark shows available function at each Range.
HOLD
PEAK
SELECT
ZERO
Hz/
DUTY
MAX/
MIN
ACA
●
●
●
●
●
●
ACV
●
- -
●
●
●
DCA
●
-
●
●
-
●
DCV
●
- -
●
-
●
Ω
●
-
●
●
-
●
- -
●
- - -
- -
●
- - -
●
-
●
●
- -
TEMP
●
-
●
●
-
●
4. Preparation for measurement
4-1. Checking Battery Voltage
Set the Function Switch to any position other than “
OFF
”.
When the display is clear without “
BATT
” mark, showing
battery voltage is enough. When the display is blank or
“
BATT
” mark is indicated, replace the batteries according
to Section 7, Battery Replacement.
CAUTION
The Sleep feature automatically powers the
instrument off in about 15 min after the last switch or
key operation. Therefore, the display may be blank
even with the Function Switch set to a position other
than “OFF”. To operate the instrument in this case,
turn the switch back to the “OFF” position, then to any
other position. Replace the batteries if nothing was
displayed after above operations.
4-2. Checking Switch Setting & Operation
Confirm the Function Switch is set to the correct position,
the instrument is set to the correct measurement mode,
and the Data hold function is disabled. Otherwise,
desired measurement cannot be made.
5. Measurement
5-1. AC Current Measurement
DANGER
Never make measurement on a circuit in which
voltage over AC600V exists to avoid getting
electrical shock.
Transformer jaw tips are designed not to short the
circuit under test. If equipment under test has
