Sperry instrument POCKET-PRO DM-2A Operating Instructions

DM2A IM_0906 10/5/06 5:01 PM Page 1
10/06 FORM #262-1
OPERATING INSTRUCTIONS
MODEL DM-2A
POCKET-PRO
®
DIGITAL MULTIMETER
2150 Joshua's Path, Suite 302
Hauppauge, New York 11788
1-800-645-5398 | 631-231-7050
Fax: 631-434-3128

5) SAFETY PRECAUTIONS

The following safety precautions must be observed to
insure maximum personal safety during the operation at
this meter.
1. Read these operating instructions thoroughly and
completely before operating your Pocket Pro. Pay
particular attention to WARNINGS which will inform
you of potentially dangerous procedures. The
instructions in these warnings must be followed.
2. Always inspect your meter, test leads and accessories
for any sign of damage or abnormality before every
use. If any abnormal conditions exists (e.g. broken test
leads, cracked cases, display not reading, etc.), do not
attempt to take any measurements. Refer to Return for
Repair section.
3. 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.
4. To avoid electric shock use CAUTION when working
with voltages above 40Vdc or 20Vac. Such voltages
pose a shock hazard.
5. Never exceed the maximum allowable input value of
any function when taking measurement. Refer to the
chart above for maximum inputs
6. Never touch exposed wiring, connections or any live
circuit when attempting to take measurements.
7. Do not attempt to operate this instrument in an
explosive atmosphere (i.e in the presence of
flammable gases or fumes, vapor or dust).
8. When testing for the presence of voltage make sure
the voltage function is operating properly by reading a
10/06 Formulario No. 262-1
INSTRUCCIONES DE MANEJO
MODELO DM-2A
POCKET-PRO ®
MULTIMETRO DIGITAL
2150 Joshua's Path, Suite 302
Hauppauge, New York 11788
1-800-645-5398 | 631-231-7050
Fax: 631-434-3128

2) FEATURES

ONE YEAR LIMITED WARRANTY
UL LISTED...to both US and Canadian standards
Sperry Instruments warrants that this Sperry instrument has been
18 RANGES, 5 FUNCTIONS
carefully tested, inspected, and warranted for one (1) year from
the date of purchase by the original end user, provided the LIMITED ONE YEAR WARRANTY.
instrument has not been misused, damaged due to negligence,
AUTO RANGING /MANUAL RANGING
neglect or unauthorized repair, abused or used contrary to the
SIMPLE OPERATION
operating instructions. Instruments and proof of purchase in the
CONTINUITY BUZZER
form of a legible copy or original of the sales receipt clearly
RANGE HOLD BUTTON
identifying the distributor, model number and date of purchase
must be returned to Sperry Instruments, Attention: Customer BUILT IN TEST LEADS
Service Center, 2150 Joshua's Path, Suite 302, Hauppauge, New
AUTO POWER OFF
York 11788, postage prepaid for examination and verification of

3) SPECIFICATIONS

manufacturing defect under warranty. Sperry Instruments shall be
the sole judge of such defect. The liability of Sperry Instruments
Display:
shall be limited to the repair or replacement at its sole option of
any defective product.
Range

1) INTRODUCTION

Selection:
The DM-2A is an innovative concept in digital multimeter Polarity:
design. It is a miniature ultra-slim DMM which combines
the measurement capabilities of a 18 range, 5 function Overrange:
Low Battery
digital instrument with the handiness and simplicity of a
pocket calculator. The DM-2A features the latest Indication:
developments in high-technology construction and
design. All the features of larger sized DMM's are to be
Measurement
found in the DM-2A. Autoranging, overload protection on
Rate:
all ranges, auto polarity, audible/visual continuity
indication, sturdy ABS plastic case and much more. The Operating
Environment:
DM-2A is extremely easy to use. Two thumb operated
switches control all functions. The test leads are built into
the instrument and cannot be removed. They are always
there when you need them. A handy "booklet style" Storage
Temperature:
carrying case which hold the instrument, test leads and
operating instructions is included, and allows the DM-2A
Power:
to be carried easily in your shirt pocket.
known voltage in that function before assuming that a Measuring Voltage
zero reading indicates a no-voltage condition.
1.
Always Think Safety, Act Safely
2.

6) OPERATION

Before taking any measurements, read the Safety
Information Section. Always examine the instrument for
damage, contamination (excessive dirt, grease, etc.) and
defects. Examine the test leads for cracked or frayed
insulation. If any abnormal conditions exist do not attempt
to make any measurements. To clean, wipe with a clean
dry cloth.
Autoranging
The meter defaults to autorange when you turn it on. In
3.
autorange, the meter selects the range automatically.
Manually Selecting a Range
The meter also has a manual range mode. In manual
4.
range, you select and lock the meter in a range. To
manually select a range:
Measuring Resistance
Press [RANGE HOLD] button to hold the selected range.
1.
Subsequently pressing the [RANGE HOLD] button will
select each range in sequence from the lowest to the 2.
highest range. Hold the button for 2 seconds to return to
3.
the Autorange Mode.
Data Hold Feature
4.
Press [DATA HOLD] button to toggle in and out of the Data
Hold mode. In the data hold mode, the annunciator is
displayed and the last reading is held on the display. Press Note: The most significant digit blink indicates an overrange
condition. This will occur with the test leads open.
[DATA HOLD] button again to release the hold and current
readings are once again displayed.
Measuring Continuity
1.
usted pueda llevar el DM-2A fácilmente en el bolsillo de la
GARANTIA LIMITADA DE UN AÑO
camisa.
Sperry Instruments garantiza que este instrumento Sperry ha sido
2) CARACTERISTICAS
cuidadosamente probado, inspeccionado y garantizado por un (1)
año a partir de la fecha de compra por el usuario final original, a
LISTADO POR LA ASOCIACION DE ASEGURADORES
condición de que el instrumento no haya sido usado indebidamente,
(UL)...según las normas de EE.UU. y Canadá
dañado debido a negligencia, descuido o reparación no autorizada,
18 GAMAS, 5 FUNCIONES
abusado o usado en forma contraria a las instrucciones de manejo.
GARANTIA LIMITADA DE UN AÑO
Los instrumentos y la prueba de compra en forma de una copia u
SELECCION DE GAMAS AUTOMATICA Y MANUAL
original legible del recibo de venta que identifique claramente el
distribuidor, el número de modelo y la fecha de compra, deben ser MANEJO SENCILLO
devueltos a Sperry Instruments Attention: Customer Service Center,
APAGADO AUTOMATICO
2150 Joshua's Path, Suite 302, Hauppauge, New York 11788, con
ZUMBADOR DE CONTINUIDAD
franqueo prepago para el examen y verificación del defecto de
BOTON DE RETENCION DE GAMA
fabricación bajo garantía. Sperry Instruments será el único juez de
CONDUCTORES DE PRUEBAS INCORPORADOS
dicho defecto. La responsabilidad de Sperry Instruments se limitará a
APACONTO AUTOMATICO
la reparación o cambio a su sola opción de cualquier producto
defectuoso.
3) ESPECIFICACIONES
1) INTRODUCCION
Visualizador:
El modelo DM-2A es un concepto innovador en el diseño
de multímetros digitales. Es un MMD ultradelgado en
miniatura que combina la capacidad de medición de un
Selección de
instrumento digital de 18 gamas y 5 funciones con la
gamas:
practicidad y simplicidad de una calculadora de bolsillo. El
modelo DM-2A presenta los últimos adelantos en
construcción y diseño de alta tecnología. Todas las Polaridad:
características de los MMD de tamaño más grande se
encuentran en el modelo DM-2A. Selección automática de Sobregama:
gamas, protección contra sobrecarga en todas las gamas, Indicación de
autopolaridad, indicación de continuidad audible/visual, poca pila:
estuche plástico ABS resistente y mucho más. El modelo
DM-2A es sumamente fácil de usar. Dos selectores
Velocidad
accionados con el dedo pulgar controlan todas las
funciones. Los conductores de pruebas están incorporados de medición:
en el instrumento y no se pueden quitar. Siempre están allí Ambiente de
cuando usted los necesita. Se incluye un práctico estuche operación:
estilo "libreta" que contiene el instrumento, los conductores
de pruebas y las instrucciones de manejo y permite que
Power
Consumption:
Dimensions:
Weight:
Instrument complies with insulation category (over
voltage category II). Pollution degree 2 in accordance
with IEC-1010-1 Indoor use. If the equipment is used in a
manner not specified, the protection provided by the
equipment may be impaired.

4) PACKAGING

3-1/2 digit liquid crystal display (LCD),
The DM-2A comes complete with two B-6 batteries, C-77
maximum reading 1999 with automatic
sign and function annunciators. carrying case and form # 262 operating instructions.
Autoranging/Manual ranging.
!
Automatic (-) negative polarity
MEASURING TERMINALS BEFORE REMOVING BACK COVER.
indication.
AVIS: POUR EVITER LE CHOC ELECTRIQUE DEBRANCHER
Most significant digit blinks
LES BORNES DE MEAURE AVANT D'ENLEVER LE CAPOTAGE
ARRIERE.
The "B" is displayed when the battery
voltage drops below the operating
!
level.
2.5 times per second, nominal.
0° to 40°C (32° to 104°F) Max RH
80% to 31°C, decreasing linearly to
50% RH at 40°C.
-20°C to 60°C (-4° to 140°F) at
80% relative humidity.
Two 1.5V button-type batteries
(IEC # LR-44, NEDA #1166A).
Sperry Part #B-6
2.
Set the Function Switch to "VOLT" position.
3.
Select the Mode Switch to desired AC voltage range or
DC voltage range.
Measuring Diodes
WARNING
1.
To avoid possible electric shock and/or instrument 2.
damage, do not attempt to take any voltage
3.
measurements if the voltage is above 450Vdc/ac is
the maximum voltage that this meter is designed to
4. Reverse probes. If the diode is good "OL" is displayed.
measure. the black (-) test lead potential should not
exceed 450Vdc/ac measured to earth ground.
Apply the test lead probe tips to the two points where a
All resistance and continuity measurements should
voltage reading is to be taken. The meter will
be taken on de-energized circuits only to insure safe
automatically select the proper range and display the
and accurate measurements. To avoid possible
reading.
electrical shock, instrument damage and/or
When measurements are completed, disconnect the
equipment damage, do not connect the test leads to
test leads from the circuit under test.
circuits having a potential difference greater than
450Vdc/ac. Do not connect the test leads to
potentials exceeding 450V to earth ground.
Set the Function Switch to " / 4–-i / •)))" position.
Select the Mode Switch to " " position.
Completely de-energize the circuit or device to be
measured. Connect the test lead probe tips to the
device.
The meter will automatically select the proper range
and display the reading.
Set the Function Switch to " / 4–-i / •)))" position.
Temperatura de
almacenamiento: -20°C a 80°C (-4° a 140°F) a <80% de
Energía:
Consumo de
energía:
Dimensiones:
Peso:
El instrumento cumple con la categoría de aislación
(categoría de sobrevoltaje II). Grado de contaminación 2 de
Visualizador de cristal líquido digital de conformidad con la IEC-1010-1. Uso en interiores. Si el
3-1/2 (LCD), lectura máxima de 1999 equipo se utiliza en una forma no especificada, la
con señal automática y anunciadores protección suministrada por el equipo puede verse
de función. afectada negativamente.
4) EMPAQUE
Selección de gamas automática y
manual. El modelo DM-2A incluye dos pilas B-6, un estuche portátil
Indicación de polaridad negativa (-) C-77 e instrucciones de manejo, formulario No. 262.
automática.
El dígito más significativo centellea.
!
Aparece la "B" cuando el voltaje de la
DESCONECTE LAS TERMINALES DE MEDICION ANTES DE
pila cae por debajo del nivel de
QUITAR LA TAPA POSTERIOR.
operación.
!
recambió" o equivalente.
2,5 veces por segundo, nominal.
0° a 40°C (32° a 104°F). Humedad
relativa máxima de 80% a 31°C,
disminuyendo linealmente a una
humedad relativa de 50% a 40°C.
5mW typical.
4 3 ⁄ "H x 2 1 ⁄ "W x 3 ⁄ "D
8 4 8
(111.5mm H x 56mm W x 10.5mm D)
Approx. 3.0 oz (86g) including
batteries and case.
DOUBLE INSULATION
WARNING: TO AVOID ELECTRIC SHOCK DISCONNECT
WHEN SERVICING, USE ONLY SPECIFIED
"REPLACEMENT PARTS" OR EQUIVALENT.
Select the Mode Switch to "•)))" position.

7) BATTERY REPLACEMENT

Connect the test leads to the two points at which
Power is supplied by two button-type batteries (NEDA
continuity is to be tested. The buzzer will sound if the
1166A, IEC LR-44). "B" appears on the LCD display when
resistance is approximately 60Ω ± 20Ω.
replacement is needed.
Set the Function Switch to " / 4–-i / •)))" position.
Before attempting to replace the battery, first
Select the Mode Switch to " 4–-i " position.
disconnect the Test Leads from any energized circuit.
Touch probes to the diode. A forward voltage drop is
about 0.5-0.8 v (typical for a silicon diode).
1. Disconnect the test leads from any energized circuit.
2. Set the Function Switch to OFF.
WARNING
3. Remove battery cover screw.
4. Slide off battery cover and change batteries.
5. Replace battery cover and screw.
humedad relativa.
Dos pilas tipo botón de 1,5V
(IEC # LR-44, NEDA # 186A). Pieza
Sperry # B-6
5mW normalmente.
43/8" de altura, 21/4" de ancho y 3/4"
de profundidad (111,5 mm de altura x
56 mm de ancho x 10,5 mm de
profundidad)
Aproximadamente 3,0 onzas (86
gramos) incluyendo las pilas y el
estuche.
DOBLE AISLACION
ADVERTENCIA: PARA EVITAR CHOQUE ELECTRICO,
Cuando servicio, usa soló especifico "partes de
WARNING
Screw
Battery
Compartment Cover
Battery Replacement