Lutron Electronics DM-9030 Manuale utente
TABLE OF CONTENTS
1. FEATURES ..................................................................
.
1
2. SPECIFICATIONS.........................................................
.
1
2-1 General Specifications .......................................... 1
2-2 Electrical Specifications.........................................
.
1
3. FRONT PANEL DESCRIPTION........................................ 1
3-1 Display.................................................................1
3-2 AC/DC Switch.......................................................
.
1
3-3 Power ON/OFF switch ..........................................
.
1
3-4 Function Switch ................................................... 1
3-5 Temperature Probe Socket ................................... 1
3-6 Input Terminal ....................................................
.
1
3-7 Battery compartment............................................
.
1
4. PRECAUTIONS & PREPARATIONS FOR
MEASUREMENT ...........................................................1
5. MEASURING PROCEDURE
5-1 Volta
g
e Measurement ................................................1
5-2 Current Measurement ................................................1
5-3 Resistance Measurement ...........................................
.
1
5-4
T
emperature Measurement ........................................1
5-5 Frequency Measurement ...........................................
.
1
5-6 " RPM (TACH.) " Measurement ................................... 1
5-7 "DWELL ANGLE" Measurement ...................................1
5-8 Continuity Beeper .....................................................
.
1
5-9 Diode Check.............................................................. 1
5-10 OP ADPT./Optional Adapter (External Adapter).......1
6. REPLACEMENT OF BATTERY ........................................ 1
7. OPTIONAL TEMPERATURE PROBE & OTHER
ACCESSORIES .............................................................1
Caution Symbol
Caution :
* Risk of electric shock !
Caution :
* Do not apply the overload
voltage, current to the input
terminal !
* Remove test leads before open
the battery cover !
Environment Conditions
*Installation categories II .
*Pollution Degree 2.
*Altitude up to 2000 meters.
*Indoor use.
*Relative humidity 80% max.
1. FEATURES
*Multi function measurement. DCV, ACV, DCA,
ACA, OHMS, TEMPERATURE, Hz, RPM, DWELL
ANGLE, DIODE, CONTINUITY BEEPER.
*RPM (TACH) measurement by inductive pickup for more
convenient & accurate readings of both conventional and
distributorless ignitions.
*RPM (TACH) used the " Secondary Tach. " measuring
method, no matter what cylinder no is.
*Accurate DCV/ACV, DCA/ACA and resistance
measurement, wide range of automotive electronics tests.
*Duty cycle (%) with Dwell conversion chart for electronic
fuel injection and feedback carburetors.
*Diode test quickly measures the forward bias voltage drop
of alternator rectifiers and other diodes.
*Continuity beeper keeps whenever probes touch a
continuous circuit. Helps find shorts and open wires.
*10 Mega ohm impedance protects Mega ohm computer ckt.
*Frequency measurements with adjustable trigger point for
testing MAF, MAP & ABS SENSOR.
*Rotary function switch, easy operation.
*Large size LCD display.
*Built-in overload protection for most ranges.
1
2
.
S
PE
C
IFI
C
ATI
O
N
S
2-1 General Specifications
Display 18 mm ( 0.7" ) LCD,
3 1/2 di
g
its, Max. indication 999.
Measurement 36 ran
g
es coverin
g
: DCV, ACV, DCA,
ACA, OHMS, TEMPERATURE, Hz, RPM,
DWELL ANGLE, DIODE, CONTINUITY
BEEPER.
Polarity Automatic Switchin
g
, "-" indicates
ne
g
ative polarity.
Zero Ad
j
ustment Automatic
Over-input Display shows "1" or "-1".
Samplin
g
time Approx. 0.4 second.
Operatin
g
Temp. 0
蚓
to 50
蚓
(32
蚌
to 122
蚌
)
Operatin
g
Less than 80% RH
Humidity
Power Approx. DC 3.6 mA.
Consumption
Dimension 185 x 87 x 39 mm(7.3 x 3.4 x 1.5 inch)
Wei
g
ht 322
g
/0.71 LB (includin
g
battery).
Standard Red and Black Test leads............ 1 pair
Accessories Instruction Manual .....................1 PC
Optional RPM inductive pick up sensor (IP-07)
Accessories
T
emperature probe, carryin
g
case...
2
4. PRECAUTIONS & PREPARATIONS FOR
MEASUREMENT
1)Ensure that the DC 9V battery is connected correctly to
its snap terminal and placed into the battery compartment.
2)Select the correct position of " Function Switch " &
" AC/DC Switch " before making measurements.
3)Place the RED Test Lead into the proper input terminal
before making measurements.
4)When make measurement, selecting the proper
measurement range by starting at the largest anticipated
value and progressively selecting lower ranges the
measurement falls within the proper range.
5)Remove either of the test leads from the circuit under
test when changing the measurement range.
6)Operate the instrument only in the ambient temperature
range of 32 - 122蚌(0 -50蚓) and less than 80 %
relative humidity.
7)Do not exceed the maximum rated voltage of each range
and input terminal.
8)Slide the " Power ON/OFbF" always to the " OFF" position
when the instrument does not use. Remove the battery if
the instrument intend not be used for a long period of time.
5. MEASURING PROCEDURE
5-1 Voltage Measurement
1)Connect red test lead to "V" input terminal and black test
lead to " COM" input terminal.
2)A. If voltage to be measured is AC, select " AC/DC
Switch" to the "AC" position.
B. If voltage to be measured is DC, select " AC/DC
Switch" to the "DC" position.
3)Determine the highest anticipated voltage (200mV, 2V,
20V, 200V, 600V) on the "Function Switch" and select to
the corresponding position.
4)Connect test lead probes into circuit under test.
5)APPLICATION 1 : to check the " POINTS" condition:
( Used the DC 2V range )
a. Disconnect "HIGH TENSION WIRE" from
distribution cape & ground " HIGH TENSION WIRE"
by laying or taping lug to bare metal surface.
b. Connect RED TEST PROBE to " - " terminal of
ignition coil (or points).
c. Turn ignition switch to ON for a while. Display values
should indicate in LOW voltage value ( should under
1 V ). If not, bump engine until it reach.
d. If the above (c) point voltage display showed lower
than 0.2V, then the contact resistance of " Points " is
normal, or it need to be changed.
6)APPLICATION 2 : to check the " BATTERY
LEAKAGE " condition ( Used the DC 2V range )
a. Connect BLACK TEST PROBE to NEG (-) battery.
Connect RED TEST PROBE to various spots on the
surface of battery.
b. If display indicate some value, then there is Battery
Leakage. Then clean acid or dirt from area around
battery with baking soda and water solution. Wipe dry.
7)APPLICATION 3 : to check the " BATTERY LIGHT
LOAD " ( Used the DC 200V or 20V range )
a. Connect BLACK TEST PROBE to NEG (-) battery,
Connect RED TEST PROBE to POS (+) battery
terminal.
b. Turn headlight switch on.
Turn high beam switch on.
Turn ignition switch on.
Turn heater switch on.
Turn radio on.
c. Do not continue above procedures for more than 2
minutes
d. Check that display reading is greater than 11.7 volts. If
reading is not correct, battery should be charged or
replaced.
8)APPLICATION 4 : to check the " BATTERY
CAPACITY " (Used the DC 200V or 20V range)
a. Disconnect " HIGH TENSION WIRE " from
distribution cap. & ground " HIGH TENSION WIRE "
by laying or taping lug to bare metal surface.
b. Connect BLACK TEST PROBE to NEG (-) battery
terminal, Connect RED TEST PROBE to POS (+)
battery terminal.
c. After cranking engine for about 15 seconds, check the
display reading is greater than 9.1 volts. If reading is
not correct, start motor should be checked or battery
should the charged or replaced.
9)APPLICATION 5 : to check the " BATTERY CABLE " :
(Used the DC 2V range). Measure the across voltage of
" BATTERY CABLE " when cranking the engine to check
the condition of " BATTERY CABLE "
10
)
OTHER DCV RANGE APPLICATION :
a. Check Charging System.
b. Check Voltage Regulator.
5-2 Current Measurement
1)Connect red test lead to "10A" input terminal and black
test lead to " COM " input terminal.
2)A. If current to be measured is AC, select " AC/DC
Switch " to the " AC " position.
B. If current to be measured is DC, select " AC/DC
Switch " to the " DC " position.
3)Select the " Function Switch " to the " 10 A " position.
4)Open the circuit in which current is to be measured. Now
securely connect test leads in series with the load in which
the current is be measured.
5-3 Resistance Measurement
1)Connect red test lead to " OHM " input terminal and black
test lead to " COM " input terminal.
2)Determine the highest anticipated resistance ( 200OHM,
2K, 20K, 200K , 2000K or 20 M ( K = 1000)) on the
" function switch " and select to the corresponding position.
3)If the resistance being measured is connected to a circuit,
turn off power to circuit being tested and discharge all
capacitors.
4)Connect test lead probes into circuit ( resistance ) under test.
5)Read resistance value on digital display.
6)APPLICATION 1 : " 2K, 200K RANGE " to measure the
coil's resistance.
7)APPLICATION 2 : " 2M RANGE" to measure whether
the " CAPACITOR " is good or not.
Indice
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