A.W. Sperry Instruments AWS DIGISNAP DSA-2002 User manual

7/es Form #171-1
OPERATING INSTRUCTIONS
AWS DIGISNAP™ SERIES
Models DSA-2002 and DSA-2002P
AC Digital, Snap-Around,
Volt-Ohm-Ammeter
Model DSA-2003 AC/DC Digital,
Snap-Around, Volt-Ohm-Ammeter
DSA-2003
A.W. Sperry Instruments Inc.
245 Marcus Boulevard, Hauppauge, NY 11788
Phone [phone] TOLL-FREE
PRINTED IN JAPAN 92-1197

CONTENTS
Sec. Title
— Warranty
1 Introduction
2 Features
3 Specifications/Ranges
4 Controls and Indicators
> Preparation for Use
5.1 Unpacking and Contents Check
5.2 Pre-Operation Procedure
6 Operation
6.1 Safety Procedures
6.2 AC Current Measurements
6.3 DC Current Measurements
6.4 Voltage Measurements
6.5 Resistance and Diode Measurements
6.6 Peak Hold (DSA-2002P only)
6.7 Output Jack (DSA-2003 only)
7 Maintenance
vt Cleaning
te Battery Replacement
8 Return for Repairs
9 Accessories
10 Technical Documentation
10.1 Circuit Diagram & Parts List
Model DSA-2002
10.2 Circuit Diagram & Parts List
Model DSA-2002P
10.3 Circuit Diagram & Parts List
Model DSA-2003
ODD DARWHWNY
21
23

WARRANTY
LIFETIME
LIMITED
WARRANTY
The
attention
to
detail
of
this
fine
snap-around
instrument
is
further
enhanced
by
the
application
of
A.W.
Sperry’s
unmatched
service
and
concern
for
detail
and
reliability.
These
A.W.
Sperry
snap-arounds
are
internationally
accepted
by
craftsmen
and
servicemen
for
their
unmatched
performance.
All
A.W.
Sperry’s
Snap-around
instruments
are
unconditionally
warranted
against
defects
in
material
and
workmanship
under
normal
conditions
of
use
and
service;
our
obligations
under
this
warranty
being
limited
to
repairing
or
replacing,
free
of
charge,
at
A.W.
Sperry’s
sole
option,
any
such
A.W.
Sperry
snap-around
instrument
that
malfunctions
under
normal
operating
conditions
at
rated
use.
1
REPLACEMENT
PROCEDURE
Securely
wrap
the
instrument
and
its
accessories
in
a
box
or
mailing
bag
and
ship
prepaid
to
the
address
below.
Be
sure
to
include
your
name
and
address,
as
well
as
the
name
of
the
distributor,
with
a
copy
of
your
invoice
from
whom
the
unit
was
purchased,
clearly
identifying
the
model
number
and
date
of
purchase.
A.W. SPERRY INSTRUMENTS INC.
ATT: Customer Service Dept.
245 Marcus Boulevard
Hauppauge, NY 11788
1 The warranty is not applicable if the instrument has
been: misused, abused, subjected to loads in excess of
specifications, has had unauthorized repair or has been
improperly assembled or used.
se.1 INTRODUCTION
Congratulations on your purchase of an AWS DIGISNAP
Digital Snap-Around Multimeter.
The DSA-2002 DIGISNAP combines accuracy, capability
and low cost with the durability and performance
estabilished in the AWS DIGISNAP series. This
lightweight, easy-to-operate instrument has many
outstanding features which make it unique in its class.
The DSA-2002P DIGISNAP has the same ranges and
features as the DSA-2002 with the addition of Peak Hold
for measuring peak voltage or current.
The DSA-2003 DIGISNAP is a_ digital AC/DC
snap-around Volt-Ohm-Ammeter designed similarly to
the DSA-2002. Additional functions include DC
operation, diode test function and an output millivolt
signal for recording as well as oscilloscope current
waveform viewing.
All models have a large current reading capability of up
to 2000A. A thumb operated power/function rotary
switch allows one hand operation and all functions are
displayed on the LCD display. The tear drop shaped
jaws allow access to tight spots that could not be
reached with ordinary snap-arounds. A data hold switch
is provided to freeze the reading in situations where it
would be difficult to observe the display.
As with all AWS instruments, the DIGISNAP Series are
built to be safe dependable and rugged. Their ABS
plastic housing provides superior insulation and
durability. Overload protection is provided on all ranges
with electronic overload protection to 500Vac/dc on the
resistance range. Shielded banana plugs and recessed
input terminals keep all connections safely insulated.
sec.2 FEATURES
e@ One year warranty
e Easy to read digital display — 0.37” high numerals
e Current capability up to 2000A
e Wide frequency range (40-1KHz)
@ Thumbwheel Power/Range Selector Switch allows one
hand operation
e Tear drop shaped jaws allow easy access to tight places
e Electronic overload protection up to 500Vac/dc on
resistance range
© Safety style test leads have shielded banana plugs and
recessed input terminals
e Data hold switch freezes readings
@ Peak Hold for capturing voltage and current surges.
(DSA-2002P only)
® Diode test range (DSA-2003 only)
® Output jack (DSA-2003 only) for recording or
oscilloscope viewing 3

sec.3 SPECIFICATIONS
Display: 3.5 digit LCD, maximum reading 1999
with function and decimal annunciators
Range
Selection: Manual rotary switch
Overrange
Indication: 3 least significant digits blanked
Sampling Rate: Approximately 3 times per second
Operating
Environment: -10° to 50°C (14° to 122°F) at < 85%
Storage relative humidity
Environment: ~— 20° to 60°C (—4° to 140°F) at <
Ries Temp. 90% relative humidity
Coefficent: Less than 0.07 = applicable accurac x
spec per deg C for temp -10° to 13°
and 33° to 50°F
Max. Conductor
Size: 2.16" (55 mm) diameter
Power Supply: One AWS B-4, 9V transistor type battery
(NEDA #1604)
Battery Life: 400 hrs typical with carbon zinc cell,
DSA-2002 and DSA-2002P; 16 hrs
typical with carbon = zinc cell,
DSA-2003
Battery
Indicator: "B" symbol appears on display to
Dielectric indicate low battery
Strength: 2500Vac for one minute
Dimensions: 9.7"H X 2.8" x 1.4"D (245 x 70 x 36mm)
Weight: 14.10z. (400g), DSA-2002/DSA-2002P
17.70z. (500g), DSA-2003
NOTE: Current readings should not be taken on
conductors at a potential greater than 500Vac/dc above
ground potential during hand held operation.
|
RANGES
AC CURRENT (average responding, calibrated in RMS of a sinewave)
ACCURACY (50/60Hz*) OVERLOAD
RESOLUTION! DSA-2002/2002P DSA-2003 PROTECTION
+(1.0% rdg + 2d)
(0-1500A)
+(2.5% rdg)
(1500-1999A)
*Accuracy for 40 to 1KHz: multiply 50/60Hz accuracy by 2
+(1.5% rdg + 2d)
DC CURRENT (average responding)
ACCURACY OVERLOAD
RESOLUTION | DSA-2002/2002P DSA-2003 PROTECTION
| 01a | No Ranges +(1.5% rdg + 2d) 3000A
[0008 [1
AC VOLTAGE (average responding, calibrated in RMS of a sinewave)
ACCURACY (50/60 Hz**) OVERLOAD
RESOLUTION | DSA-2002/2002P DSA-2003 PROTECTION
| 200v_ [ow |
+(1.0% rdg + 2d) | +(1.5% rdg + 2d)
: : | 08% 9 +20 |
**Accuracy for 40 to 1KHz: add 2d to 50/60Hz accuracy
DC VOLTAGE (average responding)
ACCURACY
RESOLUTION | DSA-2002/2002P
[ev | cow _|
No Ranges
RESISTANCE
es OVERLOAD
RESOLUTION| DSA-2002/2002P SA-2003 PROTECTION
ee
ees
%
rdg
+
2d)
mie
+(1.5%
rdg
+
2d)
|
cOdvac/ae
No
|
NoRange
|
for
1
minute
SS
Current:
5mA
typical
on
200M
range,
1mA
on
1500
range
DSA-2003
OVERLOAD
PROTECTION
+(1.5% rdg + 2d)
PEAK HOLD (DSA-2002P)
Peak hold display reads 1/./ 2 of peak current or peak voltage (RMS calibrated reading when a
sinusoidal AC current and voltage is measured). a
Peak Response 10ms/100ms
Peak Hold Time Approximately +1% of initial peak reading 1 minute after peak hold.
OUTPUT TERMINAL (DSA-2003)
OUTPUT WAVE OUTPUT OVERLOAD
RESOLUTION SHAPE ACCURACY PROTECTION
aA’ _ Same as +1.5% rdg
input current into load
S000AdG O.1mMV/A wave shape" >100KQ 3000A peak
“Frequency response: DC to 1KHz (sinusoidal waveform)
NOTE: All accuracies are given for 13° to 33°C
All specifications subject to change without notice.

sec.4 CONTROLS AND
INDICATORS
1. Transformer
Jaws
3. LDC Display
4. Data Hold
Switch
5. Range Selector
(Power) Switch
11. Peak Hold
Switch . AC DIGITAL 6. Input Jacks
VOLT-OHM-AMMETER
MODEL BSA-2002P
7. Battery
Compartment
Cover (on back)
8. Electrical
Symbols z
Fig. 1 DSA-2002P Front Panel
1. Transformer Jaws: The transformer jaws are used to
measure current without having to disconnect power to
the conductor.
2. Trigger: Depress to open transformer jaws.
3. LCD Display: A 3% digit display (maximum reading
1999) indicates measured values, and has annunciators
indicating function, low battery and overrange.
4. Data Hold Switch: Freezes reading. Extremely useful
when working in dimly lit or hard to reach areas.
5. Range Selector (Power) Switch: Rotary switch used to
turn the DIGISNAP power on and off and to also select
ranges.
6
1. Transformer
. LCD Display
. Data Hold
. Output Jack
. Battery
Jaws
—2. Trigger
5. Range Selector
(Power Switch)
10. DC A Zero Adj.
AC OC DIGITAL
VOLT. OHM AMMETER
MODEL OSA 2903
Compartment
6.
Input
Jacks
Cover (on back
Electrical Symbols Fig. 2 DSA-2003 Front Panel
. Input Jacks: Test leads are inserted into these jacks for
voltage, resistance and diode measurements.
. Battery Compartment Cover (on back): Remove for
access to battery.
. Electrical Symbols: 7 Dangerous voltage
A See operating instructions
. Output Jack: Provides analog output signal for
recording and oscilloscope viewing of current
(DSA-2003).
10. DC A Zero Adj.: Use to adjust zero on dc current ranges
(DSA-2003).
11. Peak Hold for capturing voltage or current surges and
peaks (DSA-2002P only).
7

sec.5 PREPARATION FOR USE
Sec.5.1 Unpacking and Contents Check
The DIGISNAP comes complete and ready to use. Check
the following contents list when unpacking. If any pieces
are missing, notify the distributor you purchased the
instrument from or A.W. Sperry Instruments Inc.
DIGISNAP meter
Test leads, one red, one black (AWS Part TL-48)
Output Jack Connector (DSA-2003 only)
Zero Adjust Screwdriver (DSA-2003 only)
Carrying Case (AWS Part C-50)
QV transistor type battery, installed (AWS Part B-4)
Operating Instructions, Form #171-1
Lifetime limited warranty registration card
Sec. 5.2 Pre-Operation Procedure
Every AWS DIGISNAP is fully inspected, tested and
calibrated prior to shipment. Before each operation, the
following procedure should be performed to insure the
safe and trouble-free operation of this instrument.
1. Check the instrument, test leads and accessories to be
used for any signs of damage, including excessive dirt
and/or grease contamination. If any abnormal
conditions exist, do not attempt to take any
measurements. Refer to Sections 7 (Maintenance) and
8 (Return for Repair).
2. Set the Range Selector Switch to each ranges listed in
the table below and observe the display reading
indicated:
DSA-2002/2002P
Display Readings
OO0OV + 2 digits
8 + 2 digits
00.0A + 2 digits
000A + 2 digits
DSA-2003
Display Reading
OO0A + 2 digits
00.0A + 2 digits
OOOV + 2 digits
00.0V + 2 digits
a
I+ I+ 1+ 14+ 1+ 220,20
3338 <<<>
*Use DC A 0 Adj. to set zero (see Sec. 6.3)
3. With the Range Selector Switch set to the 2000
insert black and red test leads into the respective COM
and VOLT input jacks. Short the test leads together.
The display should read 00.02 2 digits.
sec.6 OPERATION
Before taking any measurements, read section 6.1 (Safety
Precautions). Always examine the instrument and
accessories to be used with the instrument for damage,
(contamination excessive dirt, grease, etc.) and defects.
Examine the test leads for cracked or frayed insulation and
make sure that the lead plug fits properly into the input
jack. If any abnormal conditions exist, do not attempt to
take any measurements.
Range Selector (Power) Switch
DSA-2002/DSA-2002P — The Range Selector Switch
on the DSA-2002 and DSA-2002P can be rotated
through the OFF position for continuous range selection
in either direction.
DSA-2003 — The Range Selector Switch on the
DSA-2003 is color coded to match the functions and
ranges indicated on the front panel. The positions
indicated with white lettering are the DC and OFF
ranges. The positions indicated with yellow lettering are
the AC, resistance and diode test ranges.

Sec.6.1 Safety Procedures
The following safety precautions must be observed to
insure maximum personal safety during the operation,
service and repair of this meter:
at
10.
Bae
Read these operating instructions thoroughly and
completely before operating your meter. Pay
particular attention to WARNINGS which will inform
you of potentially dangerous procedures. The
instructions in these warnings must be followed.
. Always inspect your meter, test leads and accessories
for any sign of damage or abnormality before every
use. If any abnormal conditions exist (eg. broken test
leads, cracked cases, display not reading, etc.), do not
attempt to take any measurements. Refer to Return
for Repair section.
. Never ground yourself when taking electrical
measurements. Do not touch exposed metal pipes,
outlets, fixtures, etc., which might be at ground
potential. Keep your body isolated from ground by
using dry clothing, rubber shoes, rubber mats or any
approved insulating material.
. To avoid electric shock use CAUTION when working
with voltages above 40Vdc or 20Vac. Such voltages
pose a shock hazard.
. Never exceed the maximum allowable input value of
any function when taking a measurement. Refer to the
chart on page 5 for maximum inputs.
. Never touch exposed wiring, connections or any live
circuit when attempting to take measurements.
. Do not attempt to operate this instument in an
explosive atmosphere (i.e. in the presence of
flammable gases or fumes, vapor or dust).
. When testing for the presence of voltage, make sure
the voltage function is operating properly by reading a
known voltage in that function before assuming that a
zero reading indicates a no-voltage condition.
. Calibration and repair should be performed by
qualified maintenance personnel.
Do not attempt calibration or service unless another
person, capable of rendering first aid and
resuscitation is present.
Do not install substitute parts or perform any
unauthorized modification of the instument. Return
the instrument to A.W. Sperry Instruments for service
and repair to insure that safety features are
maintained.
10
Sec.6.2 AC Current Measurements
WARNING
The DIGISNAP Series are designed to take current
measurements on circuits with a maximum voltage
difference of 500Vac/dc between any conductor
and ground potential. Using the DIGISNAP for
current measurements on circuits above this
voltage may cause electric shock, instrument
damage and/or damage to the equipment under
test.
Before measuring current, make certain that the
test leads are removed from the instrument.
. Set the Range Selector Switch to the 2000Aac range.
The letter A will appear on the display indicating the
current function.
CAUTION
The DIGISNAP is overload protected up to 3000A. Do
not take current readings on circuits where the
maximum current potential is not known. Do not
exceed the maximum current that this instrument is
designed to measure.
. Open transformer jaws by pressing against the trigger.
. Enclose one conductor in the transformer jaws and
release the trigger (see Fig. 3). The jaws should be
completely closed and the conductor centered in the
jaws before taking a reading.
WRONG CORRECT
Fig. 3 Taking Current Measurements
4. The reading will be indicated on the display. If the
indicated reading is below 200A, set the Range Selector
Switch to the 200A range.
11

5. If the overrange indication (the 3 least significant digits
blanked) appears on the display, set the Range Selector
Switch to the 2000A range. If overrange indication is
still present, remove transformer jaws from the
conductor immediately.
6. To obtain a reading when the meter cannot be directly
observed, depress the Data Hold button after enclosing
the conductor with the jaws. The reading will be held
after the meter is removed from the conductor, allowing
easy observation.
Sec.6.3 DC Current Measurements
(DSA-2003)
When the jaws of the DSA-2003 are snapped around a
conductor carrying dc current, they will become
magnetized as part of their proper operation. Even after
the current is removed, a slight amount of magnetization
may remain, causing the instrument to be slightly off zero.
This effect is called hysteresis. The magnitude of the
hystersis effect will depend upon how much current was
original flowing in the conductor. Follow these
instructions carefully to avoid inaccurate readings that
could result from hysteresis.
1. Before taking a DC current measurement, zero adjust
the display by turning the DC AO ADJ. control using the
Zero Adjust Screwdriver included with the instrument.
2. Take reading using the procedures described in the
previous section, observing the warnings and cautions
indicated.
3. After taking a reading check that the display has
returned to zero. If not, re-zero the instrument and take
a second reading.
Sec. 6.4 Voltage Measurements
1. Insert the red and black test leads into the respective
VOLT and COM input jacks.
WARNING
The output jack of the DSA-2003 is connected
directly to the COM input jack of the instrument. Be
sure that the plug is disconnected from the output
jack of the DSA-2003 before attempting to make any
voltage measurements. The output jack is used with
current measurements only.
2. Set the Range Selector Switch to the 750Vac (or the
1000Vdc range on the DSA-2003 for dc readings). The
ia? V will appear on the display indicating the voltage
unction.
12
——_4 o—
WARNING
To avoid possible electric shock, instrument damage
and/or equipment damage, do not attempt to take
any voltage measurements if the voltage is unknown.
750Vac and 1000Vdc (DSA-2003 only) are the
maximum voltages that these instruments are
designed to measure. The COM input jack potential
should not exceed 500V measured to ground.
3. Connect the test leads to the two points where a voltage
reading is to be taken.
4. The reading will be indicated on the display. If the
indicated reading is below 200V, set the Range Selector
Switch to the 200V range.
5. Remove the test leads from the points of voltage
measurement and then remove the test leads from the
instrument.
Sec.6.5 Resistance Measurements
1. Insert the black and red test leads into the respective
COM and OHMS input jacks.
2. Set the Range Selector Switch to the resistance range
desired to be used. (The 1500 range on the DSA-2003
is also a diode test range which is calibrated to read
ohms as well as the voltage drop across the input loadin
dc millivolts. This is accomplished by holding a constant
1.0mAdc output test current. The mV and 2 symbol will
appear on the display at the same time on this range.)
WARNING
All resistance and >» measurements should be
made on de-energized circuits only to insure safe and
accurate measurements. Protection is provided up to
500Vac/dc, but readings will not be accurate.
To avoid possible electric shock, instrument damage
and/or equipment damage, do not connect the input
jacks to circuits having a potential difference
exceeding 500Vac/dc. Do not connect the COM jack
to potentials exceeding 500Vac/dc to ground.
3. Completely de-energize the circuit or device which is to
be measured. Connect the test leads to the device (the
red test lead is more positive than the black test lead).
4. A reading of indicates an overrange condition.
This will occur when the test leads are open on all
resistance ranges. (If overranging occurs when taking a
reading on the DSA-2003, set the Range Selector
Switch to the 15000 range.
13

NOTE: When reading the forward voltage drop of a diode,
be certain that the anode of the diode is connected to the
OHM input jack. If the test leads are reversed the display
will give an overrange indication.
Sec.6.6 Peak Hold Measurements (for
Model 2002P only)
When taking normal measurements, set the Peak Hold
selector switch to the OFF position. When taking Peak
Hold measurements, set the Peak Hold selector switch
to the 10ms or 100ms position only after the test leads
are connected to the circuit under test or the transformer
jaws are clamped onto the conductor. The peak hold
display may read higher than an actual value to be
measured because of the noise that may develop when
the peak hold switch is set before the test leads are
connected or the transformer jaws clamped.
The peak hold circuit is designed to select a 10ms or
100ms response time. Choose it according to your
application needs. For instance, select the 10ms
response time when measuring a surge voltage or
current that will occur when the power supply is turned
on. The 100ms response time is recommended for
measuring the starting current of a motor, (a stable
measurement can be made on the 100ms response time
as the peak hold circuit does not readily respond to the
surge current).
Slide the peak hold selector switch back to the OFF
position for a reset.
The DSA-2002P uses an analog peak hold circuit
to ensure a quick response to input current and
voltage. Because of the nature of this circuit the
peak hold reading may gradually vary with time or
the instrument may go off zero by several counts
when it is in the peak hold mode. However, this
does not indicate a faulty condition. It is likely to be
apparent when the instrument is used in a high
temperature, high humidity environment. The
instrument will restore its original condition when
returned to normal temperature and humidity.
14
Sec. 6.7 Output Jack (DSA-2003 only)
The analog output jack is provided to allow the DSA-2003
to be connected to a recorder or oscilloscope for
recording or observing the current input.
WARNING
The COM input jack and the output jack common
terminal are internally connected. Remove the test
leads from the input jacks before making any
connections to the output jack. Do not use the output
jack when taking voltage measurements.
1. Obtain access to analog output by inserting output jack
connector or optional TL-37 test lead into output jack.
2. Set the Range Selector Switch to the highest (2000A)
AC or DC current range. The output voltage signal will
Lae the ram whether the AC or DC current range is
selected.
The reading displayed on the LCD is effected by
selecting either the AC or DC current range, so it is
recommended that the appropriate function (AC or
DC) be selected if the LCD reading is to be used in
conjunction with the output jack signal. The DC
position will display on the LCD the average value of the
input current and the AC position will display the RMS
value of a sinewave only. For true RMS measurements it
is recommended that the output voltage signal be
measured with a TRMS digital multimeter.
3. Press the trigger to open the jaw and encircle the one
conductor in which the current is to be measured. If the
input Current is less than 200A, select the 200A range.
4. The readings of pure DC or symmetrical sinusoidal AC
inputs will be accurately displayed on the LCD. In
addition, any type of waveform will be available at the
output jack, provided that it falls within the frequency
specifications of the instrument. In the case of
non-sinusoidal current waveforms, the LCD readings
will not be accurate, but the output voltage signal will
be accurate.
NOTE: Current inputs to the DSA-2003 for use with the
output jack may exceed the measurement capabilities of
the instrument (up to 500A on the 200A range and up to
3000A on the 2000A range). The output signal will still be
accurate up to these maximums but the LCD display will
indicate an overrange condition.
15

sec.7 MAINTENANCE
Maintenance consists of periodic cleaning and battery
replacement.
Sec. 7.1 Cleaning
CAUTION
Do not use aromatic hydrocarbons or chlorinated
solvents for cleaning. These chemicals will react with
the plastics which are used in the cases.
The exterior of the instrument can be cleaned with a soft
clean cloth to remove any oil, grease, and grime from the
surface. Never use liquid solvents or detergents. If the
instrument gets wet for any reason, dry it using
low-pressure air less than 25 PSI. Use care and caution
around the LCD display protector and areas where air
could enter the interior of the instrument while drying.
Sec.7.2 Battery Replacement
Power is supplied to the DIGISNAP by a 9V transistor-type
battery (NEDA #1604, AWS Part B-4). "B” appears on the
LCD display when replacement is needed.
WARNING
Before attempting to replace the battery, first
disconnect the test leads from any energized circuit,
then disconnect the test leads from the instrument.
1. Disconnect the test leads from any energized circuit
and then from the instrument.
2. Turn the Range Selector Switch to the OFF position.
3. Slide off the Battery Compartment Cover (see Fig. 4).
4. Remove the battery from the compartment and unsnap
the battery connector.
5. Replace the battery with a 9V transistor-type battery
(NEDA #1604, AWS Part B-4). For maximum battery
alkaline cells are recommended.
6. Reverse the above procedure to complete battery
replacement.
Battery
Compartment
Cover
Fig. 4 Battery Repiacement
16
sec.8 RETURN FOR REPAIRS
Before returning your DIGISNAP for repair, be sure to
check that the failure to operate properly is not due to the
following:
. Weak battery
. Jaws not closing properly or clamped around two
conductors instead of one.
. Open, loose or intermittent test leads
. Data Hold switch depressed
fo NH
If these conditions do not exist and the instrument fails to
operate properly, return the instrument and accessories
prepaid to:
A.W. Sperry Instruments Inc.
Customer Service Department
245 Marcus Blvd.
Hauppauge, N.Y. 11788
State in writing what is wrong with the instrument. All
warranty repairs must include proof of purchase in the
form of a legible copy or original sales receipt clearly
identifying the distributor, model number and date of
purchase and must have a warranty card on file. See
warranty statement on page 2 for full warranty disclosure.
Repair estimate will be furnished if requested for out of
warranty instruments. Be sure to include all accessories
which may be related to the problem.
sec.9 ACCESSORIES
Sec.9.1 Test Leads
TL-5 — The TL-5 test leads have 2 industrial type long
insulated Prod handles and spade pointed
probe tips
TL-6 — Same as TL-5 except rounded probe tips
TL-37 — Test lead for analog output jack terminated in
two insulated Spade Connectors.
TL-39 — The TL-39 test leads have rounded probe tips.
TL-42 — Same as TL-39 except plugs have 90 degree
angle.
TL-52 — The TL-52 test leads have one prod and one
alligator with 90 degree angle plugs.
17

Sec. 9.2 Amperage Extender (MT-3000)
The MULTI-TRAN MT-3000 current reduction transformer
is a portable, split core current transformer capable of
extending the ac current measurement capacity of the
DIGISNAP to 3000Aac at + 3% FS (jaw opening: 3.94”).
See Fig. 5.
Fig. 5 DSA-2002 in use with MULTI-TRAN (AC measurements only)
Sec.9.3 Energizer Adaptor (E-1)
For easy snap-around current measurement, the
Energizer can be used to split the power line on
125Vac/15amp maximum appliances (Fig. 6) so that the
clamp-on ammeter can be clamped around one conductor
only. The E-1 also has a 10 position which increases the
measured current by 10 times for more accurate current
readings.
Fig. 6 DSA-2002 in use with ENERGIZER (AC measurements only)
18
sec.10 TECHNICAL
DOCUMENTATION
Sec. 10.1 Circuit Diagram & Parts List
Model DSA-2002
R.SW 2/2
19

|
REF.DES.
|
DESCRIPTION
Sec.
10.2
Circuit
Diagram
&
Parts
List
IC,
TLO22CP
;
,
IC.
uPD4030BP
or
equal
Model
DSA-2002P
IC, uwPD4053BP or equal
LSI, TSC7116CPL or equal
LCD, KLC-700P or equal
Transistor, JC501 or equal
Diode, Silicon, IN4448 or equal
Diode, Zener, IN4739 or equal
Diode, Zener, WZ061 or equal
Cap., Mylar, 0.022 uF, 50V
Cap., Elect., 33 uF, 16V
Cap., Ceramic, 0.1 uF, 50V
Cap., Elect., 10 uF, 16V
Cap., M.K.T., 0.22 uF, 63V
Cap., M.K.T., 0.47 uF, 63V
Cap., Mylar, 0.01 uF, 50V
Cap., Elect., 1 uF, 50V
Cap., Ceramic, 100pF, 50V
Thermistor, 911P97E501YV10
or equal
Res., Variable, 5k 0
Res., Variable, 500 0
Res., Variable, 200k 0
Res., Metal Graze, 5M ©, 1/2W
Res., Metal Film, 9k 0, 1/4W
Res., Metal Film, 1k 0, 1/4W
Res., Wire Wound, 3 0, 2W
Res., Carbon Film, 10k 0, 1/6W
Res., Carbon Film, 2.2M ©, 1/6W
Res., Metal Film, 1.3k 0, 1/6W
R11,R12,R13 Res., Metal Film, 1.8k ©, 1/6W
R14, R15, R382 Res., Carbon Film, 200k ©, 1/6W >
R16 Res., Carbon Film, 200k 0, 1/2W
R17 Res., Metal Film, 100 0, 1/4W
R18 Res., Carbon Film, 2k 0, 1/6W
R19, R20, R30 Res., Carbon Film, 1M ©, 1/6W é
R21 Res., Carbon Film, 100k 0, 1/6W
R22, R23, R24
Res., Carbon Film, 1M 0, 1/6W
Res., Metal Film, 27k 0, 1/6W
Res., Metal Film, 1k 0, 1/6W
Res., Metal Film, 47k 0, 1/6W
Res., Metal Film, 100k ©, 1/6W
Rotary Switch
Push Switch SPJ-222
20 21

Sec. 10.3 Circuit Diagram & Parts List
REF. DES. DESCRIPTION Model DSA-2003
IC, TLO22CP...
IC, OP-07 or equal
IC, 1CL7611DCPA or equal
IC, wPD4066BP or equal
IC, u.PD4030BG or equal
IC, pPD4053BP or equal
LSI, TSC7116CPL or equal
LED, KLC-700P or equal
FET, 2SK30A0 or equal
Transistor, JC501 or equal
Diode, Silicon, IN4448 or equal
Diode, Zener, WZ061 or equal
Diode, Zener, IN4739 or equal
Cap., Mylar, 0.022 uF, 50V
Cap., Elect., 33 uF, 16V
Cap., Mylar, 0.1 uF, 50V
Cap., Elect., 4.7 uF, 16V
Cap., M.K.T., 0.47 uF, 63V
Cap., M.K.T., 0.22 uF, 63V
Cap., Mylar, 0.01 uF, SOV
Cap., Elect., 1 uF, 50V
Cap., Ceramic, 100pF, 50V
Cal., Cap., Ceramic, 2200pF,
50V
Res., Variable, 5k 0
Res., Variable, 500 9
Res., Variable, 20k 2
Res., Variable, 200k 0
Thermistor, 911P97E501YV10
or equal
Res., Metal Graze, 10M 0, 1/2W
Res., Metal Film, 9k 0, 1/6W
Res., Metal Film, 1k 2, 1/6W
Res., Wire Wound, 3 2, 2W
Res., Carbon Film, 10k 9, 1/6W
Res., Carbon Film, 2.2M 2, 1/6W)
Res., Metal Film, 1.3k ©, 1/6W
R10, R13,R14| Res., Metal Film, 1.8k 0, 1/6W
R11,R12 Res., Metal Film, 200k 0, 1/6W
R15, R16, R17,
R18, R20 Res., Metal Film, 20k 0, 1/6W
R19 Res., Metal Film, 9.1k 2, 1/6W
R44 Res., Metal Film, 47k 0, 1/6W
R45 Res., Metal Film, 100k 0, 1/6W
R21, 22 Res., Carbon Film, 10k 9, 1/6W
R24 Res., Metal Film, 100, 1/6W
R25 Res., Metal Film, 5k 0, 1/6W
R26 Res., Carbon Film, 200k 2,
1/2W
R27 Res., Metal Film, 100 0, 1/4W
R28 Res., Carbon Film, 2k 0, 1/6W r
R23, R29, R30
R31 Res., Carbon Film, 1M 0, 1/6W
R32, R38, R39,
R40 Res., Carbon Film, 100k ©,
1/6W
R33 Res., Carbon Film, 200k 0, .
1/6W
R34, R35, R36
R37 Res., Carbon Film, 1M, 1/6W
R41 Res., Metal Film, 27k 2, 1/6W
R42 Res., Metal Film, 1k 0, 1/6W
R43 Res., Carbon Film, 1M, 1/6W
RX Cal., Res., Carbon Film, 1M,
1/6W
R.SW Rotary Switch
P.SW Push Switch SPJ-222
S.SW Slide Switch, SSSS9-2-3 L-2
VOD vdD
t
rs7VSS 9
ok |
22 23

| REF.DES. | DESCRIPTION
Q1,Q2,Q3 IC, pPD4066C or equal
Q4, Q5, Q6 IC, pPD4030G or equal
LSI, TSC7116CPL or equal
IC, TLC27M2CP or equal
IC, NJM4250 or equal
IC, TLO22CP or equal
IC, TLO61CP or equal
LCD, F2034-32P1 or equal
FET, 2SK117GR or equal
Transistor, JA101Q or equal
Transistor, JC501P or equal
Hall Element, THS103A
Diode, Zener, WZ061 or equal
Diode, Silicon, IN4448 or equal
Diode, Zener, IN4739 or equal
Diode, Zener, HZ5C-2 or equal
C1,C2,C11 Cap., Ceramic, 100pF, 50V
C3,C12 Cap., Ceramic, 0.022 uF, SOV
C4 Cap., Elect, 33 uF, 10V
cs Cap., Elect., 4.7 uF, 16V
cé6 Cap., Ceramic, 0.1 uF, 50V
C7 Cap., M.K.T., 0.22 uF, 63V
cs Cap., M.K.T., 0.47 uF, 63V
cs Cap., Ceramic, 0.01 pF, 50V
c10 Cap., Elect., 1 uF, 50V
PTC Thermistor, 911P97E501YV10
or equal
VR1 Res., Variable, 100 2
VR2, VR3 Res., Variable, 200 2
VR4, VR9 Res., Variable, 10k 2
VRS Res., Variable, 10k 2
VRE Res., Variable, 200k 2
VR7 Res., Variable, 500 0
VR8 Res., Variable, 100k 2
TH Thermistor, DTN-D501K or
equal
R1 Res., Metal Graze, 10M , 1/2W
R2 Res., Metal Film, 90.9k 2, 1/4W
R3 Res., Metal Film, 9k 2, 1/4W
R4 Res., Metal Film, 1k 2, 1/4W
R5, R11, R36 Res., Metal Film, 4.99k 0, 1/6W
R6, R7, R8,
R9 Res., Metal Film, 909 0, 1/6W
R10 Res., Metal Film, 60.4k 0, 1/6W
R12 Res., Metal Film, 402k 0, 1/6W
R13 Res., Metal Film, 2M 0, 1/4W
R14, R16 Res., Metal Film, 90.9k 0, 1/6W
R15, R35 Res., Metal Film, 18k 0, 1/6W
R17, R18,R19
R20 Res., Metal Film, 10k 0, 1/6W
R21 Res., Carbon Film, 430 9, 1/6W
R22, R34 Res., Metal Fi'm, 1k , 1/6W
R23 Res., Carbon Film, 510k ©,
1/6W
R24, R50 Res., Carbon Film, 10k 0, 1/6W
R25 Res., Carbon Film, 2.2M ©, 1/4
R26 Res., Metal Film, 1.3k 2, 1/6W
R27, R30, R31} Res., Metal Film, 1.8k 2, 1/6W
R28, R29,R54| Res., Carbon Film, 200k ,
1/6W
R32 Res., Metal Film, 47k 2, 1/6W
R33, R51,R53} Res., Carbon Film, 1M Q, 1/6W
R37, R55 Res., Metal Film, 100k 2, 1/6W
R38, R39,
R40, R41,
R42, R43,
R44, R45,
R46, R47, Res., Carbon Film, 20k 9, 1/6W
R48, R49
R52 Res., Carbon Film, 360k 0,
1/6W
R56 Res., Metal Film, 909k 0, 1/4W
R57 Res., Carbon Film, 200k 9,
1/4W
R58 Res., Metai Film, 499 9, 1/6W
P.SW Push Switch SPJ-222
A.O.P. Jack Jack, HSJ1087-01-010