IDEAL 61-480 User manual

IDEAL INDUSTRIES, INC.
TECHNICAL MANUAL
MODEL: 61-480
MODEL: 61-481
MODEL: 61-482
The Service Information provides the following information:
•Precautions and safety information
• Specifications
• Basic maintenance (cleaning, replacing the battery and fuses)
• Performance test procedures
• Calibration and calibration adjustment procedures
Form number: TM61480-1-2
Revision: 5. Date: July 2002
Form number TM61480-1-2 Rev 5 July 2002

TABLE OF CONTENTS
Introduction 1
Precautions and Safety Information 1
Symbols 1
Safety Information 2
Specifications 3
General Specification – 61-480 3
General Specification – 61-481 and 61-482 4
Voltage Specifications – All Models 5/6
Current Specifications – All Models 6
Peak Hold (61-482 only) and Resistance Specifications 7
Continuity and Diode, Specifications 8
Capacitance (61-481 and 61-482) Specifications 8
Frequency Specifications – All Models 8
Volt/Amp Frequency (61-481 only) 9
Temperature Specifications (61-482 only) 9
Characteristics 9
Certifications and Compliances 10
Required Equipment 11
Basic Maintenance 12
Replacing the Battery 13
Replacing Fuses 13/14
Cleaning 14
Performance Tests 14
Testing the Display 14
Testing the Voltage Function 15/16
Testing the Amps Function 16/17
Testing the Resistance Function 16/17
Testing the Diode and Continuity Function 17
Testing the Frequency Function 18
Testing the Capacitance Function 18
Testing the Temperature Function 19
Calibration 19/20
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Introduction
Warning
To avoid shock or injury, do not perform the verification
tests or calibration procedures described in this manual
unless you are qualified to do so.
The information provided in this document is for the use
of qualified personnel only.
Caution
The 61-480 serials contain parts that can be damaged by static
discharge. Follow the standard practices for handling static sensitive
devices.
For additional information about IDEAL INDUSTRIES, INC. and its products,
and services, visit IDEAL INDUSTRIES, INC. web site at:
www.idealindustries.com
Precautions and Safety Information
Use the meter only as described in the Users Manual. If you do not
do so, the protection provided by the meter may be impaired.
Read the “Safety Information” page before servicing this product.
In this manual, a Warning identifies conditions and actions that
pose hazard (s) to the user; a Caution identifies conditions and
actions that may damage the meter or the test instruments.
The Symbols
The symbols used on the meter and in this manual are explained
in Table A.
Table A Symbols
Meter Safety
Symbol
Description
Battery
Fuse
Cautionary or important information in manual
Danger- Risk of electrical shock
Double Insulation- Protection Class II
CAT III IEC Over-voltage Category III
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SAFETY
Review the following safety precautions to avoid injury and prevent damage to this product or any products
connected to it. To avoid potential hazards, use the product only as specified.
CAUTION. These statements identify conditions or practices that could result in damage to the
equipment or other property.
WARNING. These statements identify conditions or practices that could result in personal injury
or loss of life.
Specific precautions
Do not operate without covers. To avoid personal injury , do not apply any voltage or current to the
product without the covers in place.
Electric overload. Never apply a voltage to a connector on the product that is outside the range specified
for that connector.
Avoid electric shock. To avoid injury or loss of life, do not connect or disconnect probes or test leads
while they are connected to a voltage source.
Do not operate in wet/damp conditions. To avoid electric shock , do not operate this product in wet or
damp conditions.
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SPECIFICATIONS (Model 61-480)
All specifications are warranted unless noted typical and apply to the 61-480.
Stated accuracies are at 23°C ±5°C at less than 80% relative humidity.
If Low Battery indicator is active then specification could be effective.
General specifications
Characteristics Description for 61-480
LCD display digits 3¾ LCD Display
Bargraph segments 70 Segment Graph
Display count 3200
Numeric update rate 2 times / sec
Polarity display Automatic
Over range display “OL” is displayed
Low voltage indicator “ ” is indicated
Automatic power-off time Automatic backlit off =1minutes
Power source 2 AAA dry cell battery
Maximum input voltage 1000V (750V AC) CAT II
Between V and COM
Maximum floating voltage 1000V (750V AC) CAT II between any
terminal and earth ground
Maximum input current 400mA between mA and COM, 10A
continuous between A and COM
Maximum open circuit
Voltage (current inputs)
600V between A and COM, and between
mA and COM
Overload protection mA connector 1A (500V) fast blow fuse
A connector 16A (500V) fast blow fuse
V connector ΩHZ
Temperature Coefficient 0.1 x (Spec. Accuracy) / °C < 18°C
or > 28°C .
Battery Life 500 hours typical (alkaline)
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SPECIFICATIONS (Model 61-481 and 482)
All specifications are warranted unless noted typical and apply to the 61-481 and 61-482.
Stated accuracies are at 23°C ±5°C at less than 80% relative humidity.
If Low Battery indicator is active then specification could be effective.
General specifications
Characteristics Description for 61-481 & 61-482
LCD display digits 3¾ LCD Display
Bargraph segments 82 Segment Graph
Display count 4000
Numeric update rate 2 times / sec
Bargraph 12 times/sec
Polarity display Automatic
Over range display “OL” is displayed
Low voltage indicator “ ” is indicated
Automatic power-off time Automatic backlit off =1minutes
Power source One 9V dry cell Battery
Maximum input voltage 1000V (750V AC) CAT II
Between V and COM
Maximum floating voltage 1000V (750V AC) CAT II between any
terminal and earth ground
Maximum input current 400mA between mA and COM, 10A
continuous between A and COM
Maximum open circuit
Voltage (current inputs)
600V between A and COM, and between
mA and COM
Overload protection mA connector 1A (500V) fast blow fuse
A connector 16A (500V) fast blow fuse
V connector ΩHZ
Temperature Coefficient 0.1 x (Spec. Accuracy) / °C < 18°C
or > 28°C
Battery Life 300 hours typical (alkaline)
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Measurement Characteristics
(All at 23°C ±5°C, < 80% R.H.) ±([% of reading] + [number of least digits]).
DC Volts: Model 61-480 only
Range Resolution Accuracy Over Voltage
Protection
300mV .1mV ±(0.25% + 1 digit)
3V 1mV
±(0.4% + 1 digit)
30V 10mV 1000 V rms
300V 100mV
1000V 1V
±(0.25% + 1 digit)
Input Impedance: 10MΩ(over 1000MΩin 400mV range)
DC Volts: Model 61-481 and 61-482 only
Range Resolution Accuracy Over Voltage
Protection
400mV .1mV ±(0.25% + 5 digits)
4V 1mV
±(0.4% + 1 digit)
40V 10mV 1000 V rms
400V 100mV
±(0.25% + 1 digit)
1000V 1V
Input Impedance: 10MΩ(over 1000MΩin 400mV range)
AC Volts: Model 61-480
Range Resolution Accuracy Over Voltage
Protection
3V 1mV
30V 10mV
300V 100mV
750V 1V
±(1.3% + 5 digits) 11000 V rms
1 Frequency Response: 40 Hz to 1 kHz
AC conversion Type: Average Sensing rms calibrated to a sine wave.
Input Impedance: 10Ω// less than 100pF
AC Volt / True RMS: Models 61-481 and 61-482
Range Resolution Accuracy Over Voltage
Protection
400mV .1mV
±(2.0% +10 digits) 3
4V 1mV
±(1.0% + 5 digits) 1 2
40V 10mV
400V 100mV
±(1.3% +5 digits) 1
1000 V rms
750V 1V
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1. ±(1.5% reading+5digits) for (50% ~ full Scale) of range
2. Frequency Response: 40Hz ~ 1KHz: ±(1.5%+5digits) for 500Hz to 1KHz
3. Frequency Response: 50Hz ~ 60Hz
AC Conversion Type: AC conversions are AC-coupled, true rms responding, calibrated to the rms value
Sine wave input.
Input Impedance: 10MΩless than 100 PF.
Crest Factor: +1.5% additional error for C.F. from 1.4 to 3
+3.0% additional error for C.F. from 3 to 4
DC Current: Model 61-480
Range Resolution Accuracy Burden Voltage
30mA 10µ ±(1.5% + 2 digits) 200mV max
300mA .1mA ±(1.5% + 2 digit) 2V max
10A 10mA ±(2.0% + 3 digit) 2V max
DC Current: Model 61-481 and 61-482
Range Resolution Accuracy Burden Voltage
40mA 10µ ±(0.6% + 2 digits) 200mV max
400mA .1mA ±(0.7% + 2 digit) 2V max
10A 10mA ±(1.0% + 3 digit) 2V max
Overload Protection: 1A (500V) fast blow fuse for mA input
16A (500V) fast blow fuse for A input
AC Current: Model 61-480 only
Range Resolution Accuracy Burden Voltage
30 mA 10µA 200mV max
300mA .1mA ±(2.0% +5 digits) 2V max
10A 10mA ±(2.5% +5 digits) 2V max
AC Current/ True RMS: Models 61-481 and 61-482
Range Resolution Accuracy Burden Voltage
40 mA 10µA 200mV max
400mA .1mA
±(2.0% +5 digits) 2V max
10A 10mA ±(2.5% +5 digits) 2V max
Frequency Response: 40Hz ~ 1KHz
Overload Protection: 1A (500V) fast blow fuse for mA input
16A (500V) fast blow fuse for A input
AC Conversion Type:
Model 61-480 Average sensing rms calibrated to sine wave.
Model 61-481 and 61-482: AC conversions are ac-coupled, true rms responding,
calibrated to the rms value Sine wave input.
Crest Factor: where C.F. = peak/rms
(61-481 and 61-482) +1.5% additional error for C.F. from 1.4 to 3
+3.0% additional error for C.F. from 3 to 4
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Peak Hold:
Peak hold table for Model 61-482 only
Function Range Accuracy
400mV Unspecified
4V ±(1.5% + 300 digits)
40V
400V
DCV
1000V
±(1.5% + 60 digits)
400mV Unspecified
4V ±(1.5% + 300 digits)
40V
400V
ACV
1000V
±(1.5% + 60 digits)
Function Range Accuracy
40mA
400mA ±(3.0% + 60 digits)
DCA
10 A ±(1.5% + 60 digits)
40mA
400mA ±(3.0% + 60 digits)
ACA
10 A ±(1.5% + 60 digits)
Resistance (Ohms) for Model 61-480
Range Resolution Accuracy Over Voltage
Protection
300 Ω.1 Ω±(1.0% + 4 digits)
3K Ω1 Ω
30K Ω10 Ω±(0.4% + 3 digit) 600V rms
300K Ω.1K Ω
3M Ω1K Ω±(0.6% + 3 digit)
30M Ω10K Ω±(1.5% +5 digit)
Open Circuit Voltage: 1.5V approx.
Resistance (Ohms) for Model 61-481-and 61-482
Range Resolution Accuracy Over Voltage
Protection
400 Ω.1 Ω±(0.7% + 3 digits)
4K Ω1 Ω
40K Ω10 Ω±(0.4% + 3 digit) 600V rms
400K Ω.1K Ω
4M Ω1K Ω±(0.6% + 3 digit)
40M Ω10K Ω±(1.5% +5 digit)
Open Circuit Voltage: 1.3V approx.
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Continuity Check:
Continuity Threshold: Approx. 50Ω
Continuity Indicator: 2KHz Tone Buzzer
Input Protection: 600V rms
Diode Test:
Test Current: 1.1 mA (Typical)
Open Circuit Voltage: 3.3V DC (max)
Input Protection: 600V rms
Capacitance for Model 61-481-and 61-482
Range Resolution Accuracy Over Voltage
Protection
4nF 1pF ±(3% + 10 digits)
40nF 10pF
400nF 100pF
4µF 1nF ±(2% + 8digit) 600V rms
40µF 10nF
400µF 100nF
*4mF 1µF
*40mF 10µF **±(5% +20 digit)
* 4mF and 40mF ranges may have rolling within accuracy
** Specify reading < half full scale of range
Frequency/RPM for Model 61-480
Range Resolution Sensitivity Accuracy
Over Voltage
Protection
3.0KHz/30KRPM 1Hz/10RPM Frequency:
30KHz/300KRPM 10Hz/300RPM 100mV .01% ± 10 digits
300KHz/MRPM 100Hz/3KRPM 600V rms
3MHz/30MRPM 1KHz/30KRPM 250mV rms
RPM:
30MHz/300MRPM 10KHz/300KRPM 1V rms .01% ± 10 digits
Overload Protection: 600V rms
Less than 20Hz the sensitivity is 1.5V
Frequency/RPM for Model 61-481 and 61-482
Range Resolution Sensitivity Accuracy
Over Voltage
Protection
4.0KHz/40KRPM 1Hz/10RPM Frequency:
40KHz/400KRPM 10Hz/300RPM 100mV .01% ± 1 digits
400KHz/4MRPM 100Hz/3KRPM 600V rms
4MHz/40MRPM 1KHz/30KRPM 250mV rms
RPM:
40MHz/400MRPM 10KHz/300KRPM 1V rms .01% ± 10 digits
Overload Protection: 600V rms
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Volt/Amp, Frequency Hz Switch (61-481 only)
Function Range Sensitivity Accuracy
400mV 40mV rms
4V 0.2V rms
40V 2V rms
400V 20V rms + (0.01% +5)
AC Voltage
750V 200V rms
40mA 20mA rms
400mA 20mA rms
AC Current
10A 2A rms
Temperature °C, Model 61-482 only
Temperature Accuracy
Overload
Protection
-20 ºC ~ 0 ºC ± (2% + 4 ºC)
1 ºC ~ 100 ºC ± (1% + 3 ºC) 600V rms
101 ºC ~ 500 ºC ± (2% + 3 ºC)
500 °C ~ 800 °C ± (3% + 2 ºC)
Temperature °F, Model 61-482 only
Temperature Accuracy
Overload
Protection
-4 ºF ~ 32 ºF ± (2% + 8 ºF)
33 °F ~ 212 °F ±(1% + 3 °F) 600V rms
213 ºF ~ 932 ºF ± (2% + 6 ºF)
933 º F ~ 1472 ºF ± (3% + 4 ºF)
Physical Characteristics
Characteristics Description
Dimensions (H x W x D) 183mm x 85mm x 33mm
202mm x 95mm x 46mm(with holster)
Weight (with battery) 0.4Kg
With holster 0.6Kg
Environmental Characteristics Description
Temperature operating 0 to + 50°C
Non-Operating -20 to + 60°C
Humidity (operating) < 80% R.H.
Altitude Operating 2,222 m (7290 ft.)
Non-Operating 12,300 m (40354 ft.)
Vibration & shock Operating
MIL-T-28800E TYPE II Class 5
2.66gRMS, 5 to 500 Hz, 3axes
(10 minutes each)
Dust / Water Protection IP Rating IP 64
Indoor Use
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Certifications and compliances
Safety Designed to IEC 1010-1, UL3111-1 and CSA specifications
1000V DC Category II
600V DC Category III
750V AC Category II
Input rating
600V AC Category III
CAT III: Distribution level mains, fixed installation.
CAT II: Local level mains, appliances, and portable equipment.
Over voltage category
CAT I: Signal level, special equipment or parts of
equipment, telecommunication, electronics.
Pollution Degree 2 Do not operate in environments where conductive Pollutants
may be present.
EC Declaration of
Conformity
Meets the intent of Directive 89/336/EEC for
Electromagnetic Compatibility and Low Voltage
Directive 73/23/EEC for Product Safety. Compliance
was demonstrated to the following specifications
as listed in the official Journal of the European
Communities:
En 55011 Class A : Radiated and Conducted Emissions.
EN 50082-1 Immunity:
IEC 801-2 Electrostatic Discharge
IEC 801-3 RF Radiated
EN 61010-1 Safety requirements for electrical equipment
for measurement, control, and laboratory use.
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Required Equipment
Required equipment is listed in Table B. If the recommended
models are not available, equipment with equivalent specifications may be used.
Only qualified personnel should perform repairs or servicing.
Table B. Required Equipment
Equipment Required Characteristics Recommended
Model
Calibrator AC Voltage Range: 0-750V ac
Accuracy: ±0.07% (Basic)
Frequency Range: 40 ~ 100KHz
Accuracy: ±2%
DC Voltage Range: 0-1000V dc
Accuracy: ±0.006% (Basic)
Current Range: 0 ~ 10A
Accuracy:
AC (40Hz to 1KHz): ±0.08% (Basic)
DC: ±0.02% (Basic)
Frequency Source:
5.00Hz ~ 1.0000MHz
Accuracy: ±0.001%
Amplitude:
0.5V p-p ~ 1.0V p-p (square wave)
Accuracy: ±5%
•range: 1•~ 2G
Accuracy: ±0.03% (Basic)
Capacitance Range: 1pF ~ 40mF
Accuracy: ±0.10% (Basic)
Temperature Range: -200°C ~ 1200°C
Accuracy: ±0.3°C (Basic)
Fluke 5500 or
Wavetek 9100
Calibrator or
equivalent
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Basic Maintenance
Warning
To avoid shock, remove the test leads and any input signals before opening
the case or replacing the battery or fuses.
Opening Meter Case
Caution
To avoid unintentional short circuit, always place the uncovered meter
assembly on a protective surface. When the case of the meter is open,
circuit connections are exposed.
To open the meter case, refer to Figure 2 and do the following :
1. Disconnect test leads from any live source, turn the rotary switch to OFF, and remove
the test leads from the front terminals.
2. Remove the screw from the battery cover, and lift to remove.
3. The case bottom is secured to the case top by four screws and internal snaps
(at the LCD end). Using a Phillips-head screwdriver, remove the four screws.
4. Hold the meter display side up.
5. Lifting up on the input terminal end, disengage the case top from the gasket.
6. Gently unsnap the case top at the display end.
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Battery Installation or Replacement:
1. The Model 61-480 is powered by two 1.5V, AAA batteries. See Figure 1.1
2. The Model 61-481 and 61-482 are powered by one 9V battery. See Figure 1.2
3. Remove the test leads from the front terminals and turn the meter off.
4. Remove the screw from the battery cover and lift to remove.
5. Remove battery and replace.
6. Make sure the battery box leads do not become pinched between the case and
battery cover before replacing the battery cover and screw.
Testing Fuses (FS1 and FS2):
To test the internal fuses of the meter:
1. Turn the rotary selector switch to the Ωposition.
2. To test FS1, plug a test lead into VΩHz input terminal, and touch the probe to the A input
terminal. The display should indicate between 0.0 to 0.2Ω.
If display reads higher than 0.2Ω, replace the fuse FS1 (16A/500V)
3. To Test FS2. please remove the case bottom and remove FS2 (1A/500V) by gently
prying one end loose and sliding out of the fuse holder. You may use the meter or a separate
meter to measure across the fuse. The display should indicate between 0.0 to 0.4Ω.
If display reads higher than 0.4Ω, replace the fuse FS2 (1A/500V)
Note: Lead resistance is not factored into this measurement. Make sure you are using good
quality test leads
Fuse Replacement:
Warning
To avoid electrical shock, remove the test leads and any input signals before replacing
the battery or fuses. To prevent damage or injury, INSTALL ONLY quick acting fuses
with the following Amp/Volt current interrupt rating
FS1 Fuse: 16A 500V, fast blow fuse for A input
FS2 Fuse: 1A 500V, fast blow fuse for mA input
Both 10KA breaking capacity @ 440VAC, Size 32 x 6.3 mm
To replace fuses, refer to Figure 2 and do the following:
1. Remove the test leads from the front terminals and turn the meter off.
2. Remove the screw from the battery cover and lift to remove.
3. Remove the screws from the bottom case and the inside of the battery cover and
lift the case bottom until it unsnaps from the case top.
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4. Remove the defective fuse by gently prying one end of the fuse loose and sliding the
fuse out of the fuse holder.
5. Install a new fuse of the same size and rating. Make sure it is centered in the fuse holder.
6. Make sure the battery box leads do not become pinched between the case and
battery cover before replacing the bottom case and battery cover.
Cleaning
Warning
To avoid electrical shock or damage to the meter, never allow water inside the case.
To avoid damaging the meter’s housing, never apply solvents to the meter.
Performance Test
Testing the Display
Turn the meter on while holding down the [HOLD] key for 2 sec to activate the Display Test Mode on the
meter. To De-activate the Display Test Mode turn meter off and back on.
Compare the display with the appropriate example in the figure below.
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Performance Tests
The following performance tests verify the complete operability of the meter and checks the accuracy of
each meter function against the meter’s specifications.
Accuracy specifications are valid for a period of one year after calibration, when measured at an operating
temperature of 18°C to 28°C and at a maximum of 80% relative humidity.
To verify the accuracy of each function do the following:
1. Connect the calibrator to the proper input terminals for the function listed in each table.
2. Turn the rotary switch to the function being tested and input the source to the meter
3. For each input, compare the readings on the meter display to the display readings
in each table.
5. If the display reading falls outside of the range shown in the tables, the meter does
not meet specification.
DC Voltage Test: Model 61-480
Range Source Reading
300mV 290mV 289.2 to 290.8
-300mV -290mV -289.2 to -290.8
3V 2.900V 2.888 to 2.912
30V 29.00V 28.92 to 29.08
300V 290.0V 289.2 to 290.8
1000V 900V 897 to 903
DC Voltage Test: Model 61-481 and 61-482
Range Source Reading
400mV 390mV 388.6 to 391.4
-400mV -390mV -388.6 to -391.4
4V 3.9V 3.884 to 3.916
40V 39V 38.90 to 39.10
400V 390V 389.0 to 391.0
1000V 900V 897 to 903
*Press the blue button on the Meter to toggle to ACV Function
AC Voltage Test: Model 61-480
Range Source Frequency Reading
3V 2.900V 50Hz 2.858 to 2.942
3V 2.900V 500Hz 2.858 to 2.942
30V 29.00V 50Hz 28.58 to 29.42
30V 29.00V 1KHz 28.58 to 29.42
300V 290.0V 50Hz 285.8 to 294.2
300V 290.0V 1KHz 285.8 to 294.2
750V 700V 50Hz 686 to 714
750V 700V 1KHz 686 to 714
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*Press the Blue button to enter AC Voltage function
AC Voltage Test: Model 61-481 and 61-482
Range Source Frequency Reading
400mV 370.0mV 50Hz 361.8 to 378.4
400mV 370.0mV 60Hz 361.8 to 378.4
4V 3.700V 50Hz 3.647 to 3.753
4V 3.700V 500Hz 3.647 to 3.753
40V 37.00V 50Hz 36.47 to 37.53
40V 37.00V 1KHz 36.47 to 37.53
400V 370.0V 50Hz 364.7 to 375.3
400V 370.0V 1KHz 364.7 to 375.3
750V 700V 50Hz 686 to 714
750V 700V 1KHz 686 to 714
DC Current Test: Model 61-480
Range Source Reading
30mA 20.00mA 19.68 to 20.32
300mA 200.0mA 196.8 to 203.2
1A .90A .86 to .94
10A 9.0A 8.79 to 9.21
DC Current Test: Model 61-481 and 61-482
Range Source Reading
40mA 37.00mA 36.76 to 37.24
400mA 370.0mA 367.3 to 372.7
1A .90A 0.88 to .92
10A 9.0A 8.88 to 9.12
*Press the Blue button to enter AC Current function
AC Current Test: Model 61-480
Range Source Frequency Reading
30mA 20.00mA 50Hz 19.55 to 20.45
30mA 20.00mA 1KHz 19.55 to 20.45
300mA 200.0mA 50Hz 195.5 to 204.5
300mA 200.0mA 1KHz 195.5 to 204.5
1A .90A 50Hz 0.83 to .97
1A .90A 1KHz 0.83 to .97
10A 9.0A 50Hz 8.73 to 9.27
10A 9.0A 1KHz 8.73 to 9.27
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*Press the Blue button to enter AC Current function
AC Current Test: Model 61-481 and 61-482
Range Source Frequency Reading
40mA 37.00mA 50Hz 36.21 to 37.79
40mA 37.00mA 1KHz 36.21 to 37.79
400mA 370.0mA 50Hz 362.1 to 377.9
400mA 370.0mA 1KHz 362.1 to 377.9
1A .90A 50Hz 0.83 to .97
1A .90A 1KHz 0.83 to .97
10A 9.0A 50Hz 8.73 to 9.27
10A 9.0A 1KHz 8.73 to 9.27
Resistance Test: Model 61-480
Range Source Reading
300Ω180Ω177.8 to 182.2
3KΩ1.800KΩ1.785 to 1.815
30KΩ18.00KΩ17.85 to 18.15
300KΩ180.0KΩ178.5 to 181.5
3MΩ1.800MΩ1.779 to 1.821
30MΩ29.00MΩ28.37 to 29.63
*Lead resistance on the 300 Ωrange is not included in error.
Resistance Test: Model 61-481 and 61-482
Range Source Reading
400Ω360Ω357.2 to 362.8
4KΩ3.600KΩ3.583 to 3.617
40KΩ36.00KΩ35.83 to 36.17
400KΩ360.0KΩ358.3 to 361.7
4MΩ3.600MΩ3.57 to 3.62
40MΩ39.00MΩ38.37 to 39.63
*Lead resistance on the 400 Ωrange is not included in error.
*Press the Blue button to test function
Continuity Beep Test: All Models
Range Source Test
20Ω.Beeper on
50ΩBeeper off
Buzzer will Alarm if resistance is less than approximately 30Ω
*Press the Blue button to test function
Diode Test: All Models
Range Source Reading
500mV DC Approx. .485 - .515
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Note: The accuracy of the Calibrator’s Frequency function must be appropriate for
the specified Accuracy of the Meter.
Frequency Test: Model 61-480
Range Source Level Reading
3KHz 3.000KHz 0.5 Vp-p 2.999 to 3.001
30KHz 30.00KHz 0.5 Vp-p 29.99 to 30.01
300KHz 300.0KHz 0.5 Vp-p 299.9 to 300.1
3MHz 3.000MHz 0.5 Vp-p 2.999 to 3.001
10MHz 10.00MHz 0.5 Vp-p 9.99 to 10.01
Note: The accuracy of the Calibrator’s Frequency function must be appropriate for
the specified Accuracy of the Meter.
Frequency Test: Model 61-481 and 61-482
Range Source Level Reading
4KHz 3.600KHz 0.5 Vp-p 3.599 to 3.601
40KHz 36.00KHz 0.5 Vp-p 35.99 to 36.01
400KHz 360.0KHz 0.5 Vp-p 359.9 to 360.1
4MHz 3.600MHz 0.5 Vp-p 3.599 to 3.601
10MHz 10.00MHz 0.5 Vp-p 9.99 to 10.01
HZ Test (push button) (61-481 only)
Select ACV at 4V range. Push the HZ key and apply 500Hz at 100mv.
Reading should be 500.0 Hz +/- 1½ count.
Note: Sensitivity of the HZ mode is 1/100 of full scale.
The measurement frequency is from 40 Hz to 1 kHz.
Testing the Capacitance Function: Model 61-481 and 61-482
The meter measures capacitance by charging the capacitor with a known direct current, measuring the
resultant voltage, and calculating the capacitance. If the same capacitance is measured on an impedance
bridge, a different reading may result. This variance is likely to be greater at higher frequencies.
Note: Lead capacitance can effect accuracy on the lower ranges [4nF, 40nF], This error is not included.
Note: The meter selects the proper range automatically. Each measurement takes about one second per
range, 4mF and 40mF range take approx. 15 seconds.
Capacitance Test: Model 61-481 and 61-482
Range Source Reading
4nF 3.700nF 3.579 to 3.821
40nF 37.00nF 35.79 to 38.21
400nF 370.0nF 361.8 to 378.2
4µF 3.700µF 3.618 to 3.783
40µF 37.00µF 36.18 to 37.82
400µF 360.0µF 352.0 to 368.0
4mF (4,000µF) 3.600mF 3.400 to 3.800
40mF (40,000µF) 36.00mF 34.00 to 38.00
Form number TM61480-1-2 Rev 5 July 2002