Sperry DM 5300 digital multimeter, CA 200, CA 250 current transformer, HVP 860 high voltage probe, TA 1A temperature adapter, C 67 carrying case, C 68 shock guard holster, AG 940 alligator clip Operating instructions

09/95 Form #260
OPERATING INSTRUCTIONS
Model DM-5300
DIGITAL MULTIMETER
o 229
NTE
PLEASE READ THESE OPERATING INSTRUCTIONS CAREFULLY
Misuse 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
instructions and measurement procedures faithfully and adhere to all standard
industry safety rules and practices.
A.W. SPERRY INSTRUMENTS INC.
245 MARCUS BLVD, HAUPPAUGE, NEW YORK 11788
Phone: 800-645-5398 Toll Free or 516-231-7050
Fax: 516-434-3128 Telex: 645104 SPERRYINC HAUP C €
© AW Sperry Instruments Inc. 1995.
Section
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10.1
10.2
10.3
11
11.1
11.2
11.3
11.4
11.5
11.6
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12.1
13
CONTENTS
Title Page
Warranty 1
Description 2
Features 2
Specifications 3-5
Safety Rules 6
Unpacking and Contents Check 7
Battery Replacement | 7
Fuse Test and Replacement 8
Front Panel Controls 9-10
Operation 11
Voltage Measurements 11
Current Measurements ; 12-13
Resistance and Diode Measurements 13
Continuity Measurements 14
Maintenance 15
Cleaning 15
Battery Replacement 15
Fuse Replacement 15
Accessories 15
AC & AC/DC Current Measurements --- 15-16
CA200, CA-250
High Voltage DC Measurement --- HVP-860 16
Temperature Adapter --- TA-1A 16
Carrying Case --- C-67 17
PVC Shockguard Holster --- C-68 17
Push-On Alligator Clip --- AG-940 17
Calibration i7
Calibration Procedure 18
Return For Repairs i9
FIVE YEAR LIMITED WARRANTY
A.W. Sperry Instruments, Inc., warrants that this instrument has been carefully
tested, inspected. and warranted for one (5) year from the date of purchase by the
original end user, provided the instruments have 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 Boulevard, Hauppauge, New
York 11788, postage prepaid for examination and verification of manufacturing
defect under warranty. A.W. Sperry Instruments, Inc., shall be the sole judge of
such defect. The liability of A.W. Sperry Instruments, Inc., shall be limited to the
repair or replacement as its sole option of any defective product.
THIS WARRANTY AND THE OBLIGATIONS AND LIABILITIES OF SELLER
THEREUNDER ARE EXCLUSIVE AND IN LIEU OF AND BUYERHEREBY WAIVES
ALL OTHER REMEDIES, EXPRESS WARRANTIES, GUARANTEES OR LIABILI-
TIES, OF AND FORINCIDENTAL OR CONSEQUENTIAL DAMAGES OR WHETHER
OR NOT OCCASSIONED BY SELLER'S NEGLIGENCE. THIS WARRANTY SHALL
NOT BE EXTENDED, ALTERED OR VARIED EXCEPT BY A WRITTEN INSTRU-
MENT SIGNED BY SELLER AND BUYER. SOME STATES ALLOW LIMITATIONS
ON HOW LONG ANIMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION
MA Y NOT APPLY TO YOU. THIS WARRANTY GIVES YOU SPECIFIED LEGAL
RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM
STATE TO STATE.
NOTE: Recommended calibration should not exceed one year. Calibration
service charges are not covered under terms and conditions of warranty.
WARRANTY REGISTRATION
To validate warranty. please complete the warranty registration card enclosed with your
instrument andretum to A.W. Sperry Instruments, Inc., 245 Marcus Blvd., Hauppauge.
N.Y. 11788 within 10 days of purchase. No postage required.
WARRANTY RETURN
Refer to section "Return for Repairs” for complete instructions. All warranty returns
must include a legible copy or original of the sales receipt clearly identifying the model
number, serial number and date of purchase.
sec. 1 DESCRIPTION
This exceptional 3%2digit, handheld, digital multimeter have the capacity
of reading up to 9 functions on up to 30 ranges. This DMM offer a
powerhouse of measurement capability in a ‘self-contained housing. It is
designed for the professional at work in the field or in the laboratory, yet
simple enough to operate making it perfect for for the hobbyist too.
Safety was a prime consideration in the design of this DMM. Housed in
shock resistant plastic, these instruments stand up to the use and abuse of
everyday service, and electrically insulates the user from potential shock
hazards. Electronic overload protection against accidental application of
voltage to resistance and continuity circuits, combined with rugged
construction make it a durable and reliable instrument.
sec.2 FEATURES
e 30 Ranges, 9 Functions e Diode Test
e Drop Proof to 10 feet e Continuity Buzzer
e 10A DC/AC Range e Safety / Color Input Jack
e Meets IEC-348. UL-1244 e Safety Test Leads
standards e Built-in Hanger and Tilt Stand
e Overload Protection on all e Large 31 Digit LCD Display
Ranges e 5 Year Limited Warranty
à tie 205 Westwood Ave
= м Long Branch, NJ 07740
equipment 1-877-742-TEST (8378)
Fax: (732) 222-7088
a ET salesteam@Tequipment. NET
\
Sec. 3 SP ECIFICATIONS
* Display: 3% digit, 17mm large LCD maximum reading of 1999.
e Polarity: Automatic, positive implied, negative indicated.
e Overrange: (OL) or (-OL) is displayed.
e Low battery indication: The "e " 1s displayed when the battery
voltage drops below accurate operating level.
e Measurement rate: 2.5 per second, nominal.
e Operating Environment: 0°C to 50°C at < 70% R.H.
e Storage Temperature: -20°C to 60°C, 0 to 80% R.H. with battery -
removed from meter. |
e Power: Standard 9-volt battery, NEDA 1604, JIS 006P, IEC 6F22.
e Battery life: 250 hours typical with carbon-zinc.
o Fuse: 2A/600V,6.3x25.4mm fast acting AWS Part #F-24.
10A/600V,6.3x25.4mm fast acting AWS Part #F-25.
* Dimensions: 7.5"H x 3.4"W x 1.5"D (189H x 87W x 37D mm)
* Weight: Approx. 12.9 oz. (370g) including battery.
RANGES:
*Accuracy is given as +([% of reading] + [number of least significant digits])
at 18°C to 28°C, with relative humidity up to 70%.
DC Volts
Range Resolution Accuracy Input Impedance
200mV 100uV +(0.5% rdg + 1d) 10MQ a
2V = 1mV +(0.5% rdg + 1d) 10MQ
20V 10mV +(0.5% rdg + 1d) 10MQ
200V 100mV +(0.5% rdg + 1d) 10MQ
1000V 1V +(0.5% rdg + 1d) 10MQ
Overload Protection: 500VDC/350VAC RMS for 15 seconds on 200mV range
1000VDC/750VAC RMS on all other ranges
3
AC Volts
1000VDC/750VAC RMS on all other ranges
— | Resistance
Range Resolution | Accuracy (S0Hz to 500Hz) | Input Impedance
200mV 100uV +(1.2% rdg + 3d) 10MO Range Resolution Accuracy Open Circuit Volts
AY ImV +(1.2% rdg + 3d) 10MQ 2000 0.10 +(1.0% rdg+4d) 3.0Vdc
20V 10mV +(1.2% rdg + 3d) 10MQ Жо 10 +(0.8% rdg+2d) 0.3Vdc
200V 100mV +(1.2% rdg + 3d) 10MQ 20KQ 10Q +(0.8% rdg+2d) 0.3Vdc
730V tv __+(2-0% rdg + 3d) 10ME | 200KQ | 1000 +(0.8% rdg+2d) 0.3Vde
Response: Average responding calibrated in RMS of sine wave. | 2MQ 1KQ +(0.8% rdg+2d) 0.3Vdc
Overload Protection: 500VDC/350VAC RMS for 15 seconds on 200mV range | 20MQ 10KQ +(2.0% rdg+5d) 0.3Vdc
Overload Protection: 500V DC or RMS AC
DC Current Continuity Test
Range Resolution Accuracy Burden Voltage ontinuity LES
20014 0. va ox re + о oom Audible Threshold | Open Circuit Volts Response Time
mA lu +(1.0% rdg + S0mV ,
20mA 104A +(1.0% rdg + 1d) 250mV Less than 1000 3.0Vdc typical ~ 500msec
200mA 100pA | +(1.0% rdg + 1d) 250mV Overload Protection: 500V DC or RMS AC
2A ImA +(1.5% rdg + 1d) 600mV |
10A 10mA +(3.0% rdg + 3d) 300mV ‚ |
Diode Test
Overload Protection: 2A/600V fuse on A input (fast blow ceramic fuse). : —
10A/600V fuse on 10A input (fast blow ceramic fuse). Resolution Accuracy Test Current | Open Circuit Volts
ImV | +(1.0% rdg+1d) [1.0 + 0.6mA| 3.0Vdc typical |
AC Current Overload Protection: S00V DC or RMS AC
Range Resolution | Accuracy (S0Hz to 500Hz) | Burden Voltage
2004A | 0.IpA +(1.2% rdg + 3d) | 250mV
2mA 1uA +(1.2% rdg + 3d) 250m V
20mA 10uA +(1.2% rdg + 3d) 250mV |
200mA 1004 A +(1.2% rdg + 3d) 250mV |
2A ImA +(2.0% rdg + 3d) 600MV |
10A 10mA +(3.5% rdg + 4d) 300mV
Overload Protection: 2A/600V fuse on A input (fast blow ceramic fuse).
10A/600V fuse on 10A input (fast blow ceramic fuse).
sec. 4 SAFETY RULES
1. Read these operating instructions thoroughly and completely before
operating your DMM. Pay particular attention to WARNINGS and
CAUTIONS which will inform you of potentially dangerous proce-
dures. These instructions must be followed.
2. Always inspect your DMM, test leads and accessories for any sign
of damage or abnormality before every use. If any abnormal
conditions exist (e.g. broken test leads, cracked cases, display not
reading, etc.), do not attempt to take any measurements. Refer to
section 13 Return for Repair. |
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. Never touch exposed wiring, connections or any live circuit
conductors when attempting to take measurements.
5. Never replace the protective fuse inside the DMM with any other than
the AWS Part number specified or approved equal.
. Remember: Think Safety and Act Safely.
7. When testing for the presence of voltage, make sure the voltage
function is operating properly by reading a known voltage in that
range before assuming that a zero reading indicates a no-voltage
condition. |
8. Calibration and repair should be performed by qualified maintenance
personnel only.
9. Do not attempt calibration or service unless another person, capable
of rendering first aid and resuscitation 1s present.
10. Do not install substitute parts or perform any unauthorized modifi-
cation of the instrument. Return the instrument to A.W. Sperry
Instruments for service and repair to insure that safety features are
maintained.
11. To avoid electric shock use CAUTION when working with voltages
above 40Vdc or 20Vac. Such voltages pose a shock hazard.
AN
6
12. Do not operate this instrument in an explosive atmosphere (i.e. in
the presence of flammable gases or fumes, vapor or dust.)
Sec. 5 UNPACKING AND CONTENTS CHECK
The A.W. Sperry DM-5300 come 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.
e Operating Instructions form #260.
* TL-58 Test Leads 1 red, 1 black heavy duty with prod tips connected
to 90° shielded banana plugs.
+
e 9V Transistor Type Battery (AWS Part #B-4) See Battery Replacement
section 10.2 for proper installation.
* Two Fuses installed, One F-25 fuse, fast acting, high interrupting
capacity 10 Amp,600Vac rating 6.3x25.4mm. One F-24 Fuse, fast
acting, 2A,600Vac rating 6.3x25.4mm. One spare F-24 Fuse. See
Fuse Replacement section 10.3.
Sec.6 BATTERY REPLACEMENT
This DMM has a self-contained power supply consisting of One 9V
Transistor Type Battery (NEDA #1604, AWS Part #B-4).
When the multimeter displays the " £51 " the battery must be replaced to
maintain proper operation. |
WARNING
TO PREVENT ELECTRICAL SHOCK HAZARD, TURN OFF
THE MULTIMETER AND DISCONNECT TEST LEADS
BEFORE REMOVING THE BACK COVER.
1. After disconnecting test leads and turning off the multimeter, remove
back cover by temoving the three screws; then lift off the back cover.
2. Replace the battery.
3. Replace the back cover.
sec. 7 FUSE TEST AND REPLACEMENT
Use the following steps to test the internal fuses of the meter:
1. Turn the function / range switch to the ( P+ ) position. Plug a test
lead into the VQ input terminal.
2. Touch the probe to the À input terminal. The display should indicate
1.400 or less, otherwise the fuse is probably bad.
3. Touch the probe to the 10A input terminal. The display should indicate
.001 or less, otherwise the 10A fuse is probably bad.
WARNING
TO PREVENT ELECTRICAL SHOCK HAZARD, TURN OFF
THE MULTIMETER AND DISCONNECT TEST LEADS
BEFORE REMOVING THE BACK COVER.
A Input Terminal
1. After disconnecting test leads and turning off the multimeter, remove
back cover by removing the three screws; then lift off the back cover.
2. Carefully remove the fuse (6.3x25.4 mm) from the fuse holder.
Replace with a 2A/600V replacement fuse, AWS Part #F-24 or
approved equal.
3. Re-connect the battery and replace it in the e battery compartment.
4. Replace the back cover by reversing the procedure used to remove it.
10A Input Terminal
1. After disconnecting test leads and turning off the multimeter, remove
back cover by removing the three screws; then lift off the back cover.
2. Carefully remove the 10A/600V fuse from the 10Ampere fuse holder.
Replace with a new 10A/600V fuse, AWS Part #F-25 or approved
equal.
3. Re-connect the battery and replace it in the battery compartment.
4. Replace the back cover by reversing the procedure used to remove
1t.
8
Sec.8 FRONT PANEL CONTROLS
|
|
1
+
DATA MAX |
HOLD HOLD
!
|
V~ 750|0FFl 000 \/== |
202% Aly 200
2 20 I
200m 2 |
2004 200m |
2m 20M |
20m 2M__ |!
200m 200k | |
2A 20k '
А лол 2k |
10A 200 es) |
A 2
A 00 20 2 200 0 |
1
No
1 VQ Volt, Ohms, Diode, Input Terminal
This is the positive input terminal for all functions except current
measurements, Connection is made here using the red test lead.
2 COM Common Terminal
This is the negative (ground) input terminal for all measurement modes.
Connection is made to it using the black test lead.
3 A Amperes Input Terminal
This is the positive input terminal for current measurement (ac or dc) up
to 2A. Connection is made to it using the red test lead.
4 10A 10 Amperes Input Terminal
This is the positive input terminal for current measurement (ac or dc) up
to 10A. Connection is made to it using the red test lead.
5 Function Selector Rotary Switch
This rotary switch selects the measurement function when aligned with
function symbols on the panel.
6 Liquid Crystal Display (LCD)
This liquid crystal display provides a 3% digit measurement data display
having a maximum count of 1999.
7 MAX HOLD Button
This measurement function is used to measure the maximum value of a
signal.
To use this function, select the function and range and press the MAX
button. When this is done, the "MAX" annunciator will appear in the
display. Next, by inputting a signal, the MAX function operates. This
maximum value is held in digital memory for a long period.
To exit the MAX mode, press the MAX button once again.
8 DATA HOLD Button
Press (DATA HOLD) button to toggle in and out of the Data Hold mode.
In the Data Hold mode, the "D-H" annunciator is displayed and the last
reading is held on the display. Press the (DATA HOLD) button again to
exit and resume readings.
10
sec. 9 OPERATION
Before making any measurements always examine the instrument and
accessories 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 the lead plugs fit snugly
into the instrument jacks. If any abnormal conditions exist do not
attempt to make any measurements. Instead refer to Sec. 14 Return
for Repairs.
sec. 9.1 VOLTAGE MEASUREMENTS
1. Insert the black and red test leads into the respective "COM" and
"V-Q" terminals.
2. Place the range selector switch into the 1000Vdc position if a dc
voltage is to be measured or into the 750Vac position if an ac voltage
is to be measured. Always start in the highest range of the function
to be measured.
CAUTION
To avoid possible electric shock, instrument damage and / or
equipment damage, do not attempt to take any voltage measurements
if the voltage is above 1000Vdc / 750Vac or if the voltage is unknown.
1000Vdc and 750Vac is the maximum voltages that this instrument
is designed to measure. The "COM" terminal potential should not
exceed 500V measured to ground.
3. Apply the test leads to the two points at which the voltage reading is
to be taken. Be careful not to touch any energized conductors with any
parts of your body.
4. Turn the range selector switch to the next lower range for a more .
accurate reading only if the reading is within that next lower range.
5. When measurements are completed, disconnect the test leads from the
circuit under test. Remove the test leads from the instrument.
11
Sec. 9.2 CURRENT MEASUREMENTS 3. Raise the "COM" terminal potential above 500V to ground.
1. Insert the black and red test leads into the respective "COM" and + Energize the circuit. If the reading is within the next lower range,
"10A" terminals switch to that range at completely de-energizing the circuit under test.
2. Place the function switch to the 10A position. Always start with the Continue changing to lower ranges if the reading is within the next
highest range of the function to be measured. lowest range to obtain the best accuracy.
5. Completely de-energize the circuit before removing the test leads.
CAUTION ;
Do not attempt to measure a current if it is unknown or above 10A ac | sec. 9.3 RESISTANCE AND DIODE
/ dc. The A input terminal is protected by a 2A/600V fast blow fuse. MEASUREMENTS
The 10A input terminal is protected by a 10A/600V hi-energy, fast | 1. Insert the black and red test leads into the respective "COM" and
blow fuse. "V-Q" terminals.
2. Place the range selector switch into the (2 range desired for a
3. Completely de-energize the circuit in which the current is to be measurement. (The diode check entails injecting a given current into
measured. Place the DMM in series with the conductor carrying the the diode junction to be tested and reading the voltage drop across the
current which is to be measured. Energize the circuit. diode).
4. If the reading is less than 2A, you can switch to a lower range for
greater accuracy. If not, you have completed your measurement. CAUTION
| All resistance and diode measurements should be taken on
CAUTION deenergized circuits only. To avoid possible electrical shock,
Before changing ranges, always de-energize the circuit completely. instrument damage and/or equipment damage do not connect the
An open circuit exists between the test leads during range change on "COM" and "V-Q" terminals to circuits having a potential difference
the DMM. exceeding 500Vdc/ac. Do not connect the "COM" terminal to
| | potentials exceeding 500V to ground. |
5. To change to a lower range, move the red test lead to the "A" jack on
the DMM and switch the range selector switch to the "2A" position. 3./Completely de-energize the circuit or deive which is to be measured
CAUTION Connect the test leads to the device (the red test lead is positive with
The A ranges are fuse protected. To avoid possible electrical shock, f respect to the black test lead). When measuring a diode, connect the
instrument damage and / or equipment damage do not:
. Attempt to take À current readings on circuits having more than 2A
current flow.
. Impress a voltage between the "COM" and "A" terminals exceeding
600Vac / dc. Some circuit damage may result for voltages below
600Vac / dc.
12
"V-Q" terminal to the anode. A reading of (1) or (-1) indicates an
overrange condition or the diode juction is reverse biased. This will
occur with the test leads open on all resistance or diode ranges. If
overrange occurs when taking a reading, switch to the next highest
range for resistance measurements.
13
Sec. 9.4 CONTINUITY MEASUREMENTS
1. Place the range selector switch into the ( if) ) position.
2. Insert the black and red test leads into the respective "COM" and
"V-Q" terminals.
CAUTION
All continuity measurements should be taken on de-energized
circuits only. To avoid possible electrical shock, instrument damage
and/or equipment damage do not connect the common and ohm
terminals to circuits having a potential difference exceeding S00Vdc/
ac. Do not connect the common terminal to potentials exceeding S00V
to ground.
3.Touch the test leads to the two points at which continuity is to be tested.
The tone will sound if the reading on the display is approximately less
than 1000.
A When servicing, use only specified replacement parts.
Niña 205 Westwood Ave
Long Branch, NJ 07740
=
equipment 1-877-742-TEST (8378)
|
Fax: (732) 222-7088
.N ET salesteam@Tequipment. NET
14
sec. 10 MAINTENANCE
Maintenance consists of periodic cleaning, battery replacement, fuse
replacement and recalibration.
Sec. 10.1 CLEANING
The exterior of the instrument can be cleaned with a soft clean cloth to
remove any oil, grease or grime from the exterior of the instrument.
Never use liquid solvents or detergents. If the instrument gets wet for any
reason, dry the instrument using low pressure "clean" air at less than 25
PSI. Use care and caution around the LCD display protector and areas
where water or air could enter the interior of the instrument while drying.
Sec. 10.2 BATTERY REPLACEMENT
Required when " £31 " appears on display or nothing appears. See Battery
Replacement in section 6.
sec. 10.3 FUSE REPLACEMENT
Required when current ranges do not function. See Fuse Test and
Replacement in section 7.
Sec. 11 ACCESSORIES
The following accessories are available to expand the measurement
capabilities of the DM-5300. Refer to their respective data sheets or
operating instructions for full specifications.
Sec. 11.1 AC & AC/DC CURRENT MEASUREMENT
CA-200 and CA-250
The model CA-200 is a split core current transformer capable of
measuring AC Current up to 200Aac.
The model CA-250 is a split core current transformer capable of
measuring AC or DC Current up to 2000 Aac/Adc.
15
Model Input Output Jaw Size
CA-200 0-200Aac 200mVFS 5/8"
CA-250 0-200/2000Aac 2VFS 2 1/8"
0-200/2000Adc
Sec. 112 HIGH VOLTAGE DC MEASUREMENT
HVP-860
The Model HVP-860 is a high voltage probe capable of measuring up to
50,000Vdc.
Input: 0 - 50,000 Vdc
Output: 0 - 50Vdc at a 10MQ load
Accuracy: +(1.5% of F.S.)
CAUTION
The HVP-860 is designed to be used by technicians trained in High
Voltage measurement techniques. It is designed for use on high
impedance, low energy circuits only. These types of circuits are
normally found in electronic equipment. It is not designed to be
used on High Voltage electrical distribution equipment and
circuits. These type of circuits have essential unlimited energy
where special equipment is recommended. DO NOT use on these
types of High Energy circuits!
N
Sec. 11.3 TEMPERATURE ADAPTER - TA-1A
The Model TA-1A is a temperature adapter capable of measuring
temperature up to 1300°C/2372°F.
Temperature Range: °F/°C Selectable
-50°C to 1300°C/-58°F to 2372°F
Output: ImVdc/°C or °F
Required Load on Output: 10MQ
16
sec. 11.4 CARRYING CASE - C-67
Carrying Case for DM-5300.
Sec. 11.5 PVC SHOCKGUARD HOLSTER -
Holster for DM-5300.
C-68
sec. 1.6 ALLIGATOR CLIPS - AG-940
Two black, Insulated Push-on Alligator Clips.
Sec. 12 CALIBRATION
Calibration on these meters should be performed every year.
This can be done by sending the instruments prepaid to:
A.W. Sperry Instruments, Inc.
Customer Service Department
245 Marcus Boulevard
Hauppauge, N.Y. 11788
Specify in writing that calibration is necessary. The instrument will be
returned to you normally within one week. Estimates will be furnished
upon request.
CAUTION
The following procedure should be performed by persons trained and
qualified in electronics and electronic equipment service. DO NOT
attempt this procedure if not qualified.
WARNING
Do not attempt calibration or service unless another person, capable
of rendering first aid and resuscitation is present.
17
Sec. 12.1 CALIBRATION PROCEDURE
The procedure should be performed at an ambient temperature of
25°C + 2°C, and at a relative humidity of less than 80%. Allow the
instrument to stabilize at this temperature for a minimum of 30 minutes.
1. Remove the back case screw, and carefully pry up the back case.
2. Set the Function / Range switch to the "200mVdc" position.
3. Set the output of the DC calibrator for 190.0mV + 0.02 % and connect
it to the "V-Q" and "COM" input terminals. -
4. Adjust VRI until the display reads 190.0mV + 1 digit.
5. Carefully inspect the other DCV ranges. Your readings should be
within specification +(0.5% rdg+1 digit).
6. There is no adjustment for ACV. Calibrate DCV first.
7. Carefully inspect the ACV ranges. Your readings should be within
+(1.2% rdg+3 digits) of the ACV calibration source.
8. Set the output of the DC calibrator for 9.0A + 0.02% and connect
it to the "10A" and "COM" input terminals.
9. Adjust R12 (shunt resistor) until the display reads 9.00A.
10. If the reading is over 10A, add solder to R12. If the reading is under
10A, shave away lightly some of the solder and metal from R12.
11. Carefully inspect the other DCA ranges. Your readings should be
within specification +(1.0% rdg+1 digit).
12. Turn eff calibrator and disconnect from the DMM.
13. Install the back case and insert the back case screw,
18
sec. 13 RETURN FOR REPAIRS
Before returning your digital multimeter for repair be sure to check that
the failure to operate properly is not due to the following:
1. Weak battery.
2. Open fuse.
3. Open, loose or intermittent test leads.
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 or original
copy of the 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 1 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, and a note describing
the malfunction you observed.
19
NOTE NOTE
A.W. Sperry Instruments Inc. Edition 1 September 1995
7000-1403A