3COM 61-362 User Manual

IDEAL INDUSTRIES INC.
TECHNICAL MANUAL
MODEL: 61-362

The Service Information provides the following information

• Precautions and safety information

• Specifications

• Performance test procedure

• Calibration and calibration adjustment procedure

• Basic maintenance (replacing the battery and fuses)

Form number: 61362
Rev 1. date: May 2001

Form number 61362 rev 1 May 2002

TABLE OF CONTENTS

Title

Page

Introduction 1

Precautions and Safety Information 1

Safety Information 1

Specifications 2

General Specification 2

Voltage Specifications 2

Current Specifications 2

Resistance Specifications 2

Diode / Continuity Specifications 2

Performance Verification 3

Table 1 Verification 61-362 3

Calibration 4

Replacing the Battery 4

Replacing Fuses 5

Form number 61362 rev 1 May 2002

Page 1

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 61-362 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 and its products,

and services, visit IDEAL INDUSTRIES web site at:

www.idealindustries.com

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.

It is recommended that you read through the Operation or User manual before starting. Not all Caution,
Warning, or Danger precautions are listed in this manual.

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

Use proper Fuse. To avoid fire hazard, use only the fuse type and rating specified for this product.

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.

Form number 61362 rev 1 May 2002

Page 2

General specifications

Model 61-362
Characteristics Description
Display 3 ½ Digit LCD display
Display Count 3200 count, maximum reading 3199

32 segment analog bar graph
Over range Indication “OL” displayed
Sampling Rate 2 time/second
Operating Environment:

0°C to 50°C (32°F to 122°F) 70%RH
Relative Humidity

Temperature Coefficient
Storage Environment:

0.05X x (accuracy) per °F (32°F to 65°F, 85°F to 122°F

-20°C to 60°C (0°F to 140°F) at <70 relative humidity
Power source: 9V Battery (NEDA 1604)
Battery Live: 200 hours typical (alkaline)
Low Battery Indicator: symbol indicates low battery voltage
Auto Power Off mode Approximately 25 minutes

0.5A/250V fast acting fuse Type LA-3895 A protection Fuse

10A/600V fast acting fuse, Type LA-3897
Dimensions 5.75” H X 2.75” W X 1.5” D {without holster}
Weight: Approximately 18.0 oz. including battery
Safety UL1244, and Design to comply with IEC 1010-1 Cat III

RANGES and ACCURACY SPECIFICATION
61-362
Function Setting Ranges Accuracy

AC Voltage

DC Voltage

3.200V/32.00V/320.0V/ 600V
50Hz to 500Hz

320.0mV/32.00V/320.0V/600V 1.2% ± 1digit

3.200V 0.8% ± 1digit

2.0% ± 4 digits

320µA/3200 µA/32.00mA/320mA 2.5% ± 4 digits

AC Current

DC Current

Resistance

Continuity
Diode Check

10A,
50Hz to 500Hz
320µA/3.20mA/32.00mA 2.0%

10A, 3.0% ± 1 digit

320.0Ω

3.200k/32.00k/320.0k

3.200MΩ

32.00MΩ
beep on < 100Ω
2V DC max

3.5% ± 4 digits

± 1 digit

2.0% ± 3 digits

1.5% ± 3 digits

2.5% ± 3 digits

5.0% ± 5 digits
Not Specified
10% ± 2 digit

AC Converter: Average responding, RMS Calibrated to Sine Wave
Overload Protection: AC and DC Volts: 600V DC or AC rms .
Resistance, Diode, Continuity: 500V DC or AC rms

mA input: .5A/250V DC/AC rms
Amps input: 10A/600V DC/AC rms

Form number 61362 rev 1 May 2002

Page 3

PERFORMANCE VERIFICAITONS

Perform the following analysis, if the meter conforms to the limits listed in Table 1 the meter is functioning
correctly. If the meter does not conform to any of the listed limits the calibration procedure must be
performed.

Performance Verification Preparation

1. Turn on the Calibrator, allow calibrator to warm up. Temperature Stabilization
should be reached after 30 minutes.

2. Remove battery cover and using a calibrated meter to ensure the battery measures a minimum of 7.5 V
DC. If the battery measures under 7.5V DC, replace the battery before beginning the performance test.

3. Input the values listed in Table 1 for the Standard 61-362

Table 2 Performance Verification 61-362

Function Setting /Range Input Low Limit High Limit

ACV 3.2V 3.000V @ 50Hz 2.936 3.064
ACV 3.2V 3.000V @ 500Hz 2.936 3.064
ACV 32 30.00 @ 50Hz 29.36 30.64
ACV 32 30.00 @ 500Hz 29.36 30.64
ACV 320 300V AC @ 50Hz 293.6 306.4
ACV 320 300V AC @ 500Hz 293.6 306.4
ACV 600 500V AC @ 50Hz 486 514
ACV 600 500V AC@ 60Hz 486 514
DCV 320mV 300mV DC 296.3 303.7
DCV 3.2V 3.000V DC 2.975 3.025
DCV 32V 30.00V DC 29.63 30.37
DCV 320 300.0V DC 296.3 303.7
DCV 600 500V DC 493 507
A DC 320µA 300µA 293.9 306.1
A DC 3200 µA 3000µA 2939 3061
A DC 32mA 30mA 29.39 30.61
A DC 320mA 300mA 293.9 306.1
A DC 10 9.00 DCA 8.70 9.30
A AC 320µA 300µA @ 50Hz 292.1 307.9
A AC 320µA 300µA @ 500Hz 292.1 307.9
A AC 3200µA 3000µA @ 50Hz 2921 3079
A AC 320oµA 3000µA @ 500Hz 2921 3079
A AC 32mA 30mA @ 50Hz 29.21 30.79
A AC 32mA 30mA @ 500Hz 29.21 30.79
A AC 320mA 300mA @ 50Hz 292.1 307.9
A AC 320mA 300mA @500Hz 292.1 307.9
A AC 10A 9A @ 50Hz 8.64 9.36
A AC 10A 9A @ 500Hz 8.64 9.36

Ω 320
Ω 2k
Ω 32k
Ω 320k
Ω 2M
Ω 32M

300.0 297.7 306.3

3.000k 2.950 3.048

30.00k 29.52 30.48

300.0k 295.2 304.8

3.000M 2.922 3.078

30.00M 28.45 31.55
Diode Test 500mV .448 .552
Continuity Test
Continuity Test

120Ω
80Ω

Beep off
Beep on

Form number 61362 rev 1 May 2002

Page 4

CALIBRATION

Calibration Preparation

Required Equipment

The class of calibrator or equipment should have an accuracy that exceeds, by an expectable ratio the
accuracy of this instrument.

1. Turn on the Calibrator, allow calibrator to warm up. Temperature Stabilization
should be reached after 30 minutes.

2. Disconnect the test leads and turn the range switch to “OFF”.

3. Remove the screw holding the bottom case cover, just above the battery cover.
4 The case bottom is secured to the case top by two internal snaps. (at the LCD end).
lift up on the battery end until the case un-snaps.
5 Using a calibrated meter ensure the battery measures a minimum of 7.5 V dc.
If the battery measures under 7.5V DC, replace the battery.

Calibration Procedure

It is recommended that all IDEAL meters undergo the following calibration procedure on
an annual basis.

61-362 Calibration Procedure.

Calibration

1. Set the Function/Range Switch to the “3.200V DC” position.

2. Set the output of the DC calibrator for 3.000V and connect it to the “V-Ohm” and “COM”

input terminals.

3. Adjust VR1 (VR 200 ohm) until the display reads 3.000V +/- 1 digit.

Note : This is the only adjustments required for the 61-362. Calibration is complete.

Battery Replacement (refer to Figure 2)

1. Disconnect the test leads from any circuit under test and turn off meter.

2.Remove the three screws for the back case cover.

3. Remove battery from compartment noting the “+” and “- “ position of the Battery terminals.

4. Remove the Battery plastic sleeve and place it on the new battery
(Damage can occur to circuit if Plastic sleeve is not replace with new Battery)

5. Install new 9V battery into compartment and assure proper polarity of battery.
(An alkaline type NEDA #1604 is recommended.)

6. Install bottom case cover and secure with screws.

Form number 61362 rev 1 May 2002

Page 5

Replacing Fuse (refer to Figure 3)

1. Disconnect the test leads and turn the range switch to “OFF”.

2. Remove the three screws holding the bottom case cover
3 Us a digital multimeter in low resistance {ohms} mode to check the two fuses
mA input, 0.5A / 250V fast acting fuse.
Amp input, 10A / 600V fast acting fuse

4. Remove the defective fuse with the recommended fuse
mA with : 0.5A/250V fast acting fuse Type LA-3895 is recommended.
Amp with: 10A/600V fast acting fuse, Type LA-3897 is recommended

5. Install bottom cover and secure with screws.

Form number 61362 rev 1 May 2002