AEMC instruments CA7027 Manual de usuario

CA7027



FAULT MAPPER PRO®

GRAPHICAL TDR

E N G L I S H User Manual

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Statement of Compliance

Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments

certies that this instrument has been calibrated

using standards and instruments traceable to

international standards.

We guarantee that at the time of shipping your

instrument has met its published specications.

The recommended calibration interval for this

instrument is 12 months and begins on the date

of receipt by the customer. For recalibration,

please use our calibration services. Refer to our

Serial #: ____________________________

Catalog #: 2127.84

Model #: CA7027

Please ll in the appropriate date as indicated:

Date Received: _____________________________

Date Calibration Due: ____________________

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Table of Contents

1. INTRODUCTION............................................................................... 2

1.1 International Electrical Symbols................................................2

1.2 Receiving Your Shipment..........................................................3

1.3 Ordering Information.................................................................3

1.3.1 Accessories and Replacement Parts............................3

2. PRODUCT FEATURES ...................................................................... 4

2.1 Description................................................................................4

2.2 Key Features: ...........................................................................4

2.3 Fault Mapper Pro®Features .....................................................5

3. SPECIFICATIONS............................................................................. 6

3.1 Accuracy ...................................................................................7

4. OPERATION .................................................................................... 8

4.1 Principles of Operation .............................................................8

4.2 Accuracy and Velocity of Propagation (Vp) ..............................8

4.3 Getting Started..........................................................................9

4.4 Set-up Mode .............................................................................9

4.5 Backlight .................................................................................10

4.6 Tone Generator.......................................................................10

4.7 Selecting Full Scale Sensitivity...............................................11

4.8 Adjusting the Vp Value............................................................ 11

4.9 Determining and Measuring Vp Values .................................. 11

4.10 Attaching a Cable to the Fault Mapper Pro®...........................12

4.11 Testing a Cable.......................................................................13

4.12 Single Shot and Continuous Scanning Modes .......................14

4.13 Typical Fault Displays .............................................................14

5. MAINTENANCE ............................................................................. 15

5.1 Changing the Battery ..............................................................15

5.2 Cleaning..................................................................................15

5.3 Storage ...................................................................................15

Repair and Calibration...........................................................................16

Technical and Sales Assistance ............................................................16

Limited Warranty ...................................................................................17

Warranty Repairs...................................................................................17

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Fault Mapper Pro®Model CA7027

CHAPTER 1

INTRODUCTION

Warning

●This instrument meets the safety requirements of IEC61010-1

●The Model CA7027 is designed for use on de-energized

circuits only.

●Connection to line voltages will damage the instrument and

could be hazardous to the operator.

●This instrument is protected against connection to telecom

network voltages according to EN61326-1.

●Safety is the responsibility of the operator.

1.1 International Electrical Symbols

Signiﬁes that the instrument is protected by double or reinforced insulation.

CAUTION - Risk of Danger! Indicates a WARNING and that the operator must

refer to the user manual for instructions before operating the instrument in all

cases where this symbol is marked.

Risk of electric shock. The voltage at the parts marked with this symbol may

be dangerous.

Compliance with the Low Voltage & Electromagnetic Compatibility European

directives (73/23/CEE & 89/336/CEE).

In the European Union, this product is subject to a separate collection system

for recycling electrical and electronic components In accordance with directive

WEEE 2002/96/EC.

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Fault Mapper Pro®Model CA7027

1.2 Receiving Your Shipment

Upon receiving your shipment, make sure that the contents are

consistent with the packing list. Notify your distributor of any missing

items. If the equipment appears to be damaged, le a claim immediately

with the carrier and notify your distributor at once, giving a detailed

description of any damage. Save the damaged packing container to

substantiate your claim.

1.3 Ordering Information

Fault Mapper Pro®Model CA7027 ....................................Cat. #2127.84

Includes carrying case, 4mm color-coded banana plugs with alligator

clips, 4x1.5V AA batteries, set of 2 color-coded 4 ft red/black leads, user

manual and product warranty card.

1.3.1 Accessories and Replacement Parts

Lead - Replacement set of 2, Color-coded 4 ft (Red/Black),

Test Probes & Alligator Clips ............................................... Cat. #2152.01

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Fault Mapper Pro®Model CA7027

CHAPTER 2

PRODUCT FEATURES

2.1 Description

The Fault Mapper Pro®is a hand-held graphical TDR (Time Domain

Reectometer) designed for identifying and locating faults on power and

communication cables, given access to one end only.

The Fault Mapper Pro®measures cable length and indicates the length

and distance to cable faults to a range of 9 ft (3m) to 19,000 ft (6000m)

on virtually any type of cable. It injects a series of pulses into the cable

under test. The velocity at which the pulses travel is determined by the

type of cable, which is known as the velocity of propagation (Vp) of the

cable. The Velocity of Propagation (Vp) is adjustable between 1% and

99% enabling accurate calibration to the cable under test.

The Vp value is expressed as a percentage of the speed of light (e.g.

67% or ft/mtrs/micro-second), this value will vary according to the type

of cable under test. The Fault Mapper Pro®can accept user selectable

values between 1 and 99% (or the equivalent value in feet or meters per

micro-second).

Based on the selected Vp and the time taken for the pulses to travel

through the cable, a reection prole of the cable under test is displayed.

An adjustable cursor assists in locating faults and termination.

The Fault Mapper Pro®incorporates an oscillating tone tracer, which

is detectable with a standard tone tracer, for use in the tracing and

identication of cable pairs.

2.2 Key Features:

• Vp Setting

• Hand-held graphical TDR (Time Domain Reectometer)

• Measures cable length and indicates distance to faults to a range of

19,000 ft (6000m)

• Graphical LCD

• Easy identication of short range faults

• Emits an audible tone, used to trace and identify the type of fault

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Fault Mapper Pro®Model CA7027

2.3 Fault Mapper Pro®Features

FAULT MAPPER PRO

MODEL CA7027

TEST / TDR /

Graphical TDR

AEMC Instruments

Fault Mapper Pro

VX.X

1. Banana plug input (Red/Black)

2. Graphical LCD

3. Cable select and Vp (Velocity of Propagation) decrement button

4. Test/function select button

5. Backlight button

6. Cable select and Vp (Velocity of Propagation) increment button

7. Mode select button (TDR/Tone tracer)

8. Power ON/OFF button

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Fault Mapper Pro®Model CA7027

CHAPTER 3

SPECIFICATIONS

MODEL CA7027

ELECTRICAL

Ranges @ Vp=70% 23, 49, 98, 197, 394, 820, 1640, 3280, 6560, 9850, 19000 ft

Range Selection Manual range control

Accuracy* ±1% of range

Resolution Approximately 1% of selected range

Minimum Cable Length 1.5 ft (0.5m)

Sensitivity Minimum 3 pixel return on a fault at 4km on 0.6mm 0, PE, TP

Vp (Velocity of Propagation) Adjustable from 1% to 99%

Output Pulse +5V peak to peak into an open circuit

Output Impedance Selectable between 25, 50, 75 & 100Ω

Output Pulse Width 3 ns to 3 ms, Automatic with range

Scan Rate: 2 scans / second or scan held

Tone Generator Oscillating tone 810Hz to 1110Hz

Voltage Protection 250VAC

Power Supply 4 x 1.5V AA alkaline batteries

Battery Life 60 hours continuous scanning

Auto-off Selectable 1, 2, 3, 5 minutes or disabled

MECHANICAL

Dimensions 6.5 x 3.5 x 1.5" (165 x 90 x 37mm)

Weight (with battery) 12oz (350g)

Display Resolution 128 x 64 pixel Graphical LCD

Display Backlight Electroluminescent

ENVIRONMENTAL

Operating Temperature 14 to 122°F (-10° to 50°C)

Storage Temperature -4 to 158°F (-20 to 70°C)

Relative Humidity 5 to 95% RH non-condensing

Altitude 6000 ft (2000m)

SAFETY

Safety Rating IEC61010-1; EN60950

Protection Degree IP54

Electro-Magnetic Compatibility EN61326-1

CE Approved Compliant with current EU directives

*Measurement accuracy of ±1% assumes the instrument setting for velocity of propagation (Vp) of the cable

under test to be accurately set, and homogeneity of the velocity of propagation (Vp) along the cable length.

Accurate positioning of the cursor is also required.

**Speciﬁcations are subject to change without notice.

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Fault Mapper Pro®Model CA7027

3.1 Accuracy

The CA7027 is able to measure distances to faults and cable lengths to

an accuracy of ±1%.

This measurement accuracy is based on the correct value of Vp being

used for the cable under test, and homogeneity of the Vp along the cable

length.

If the Vp is set incorrectly by the operator, or the Vp varies along the

length of the cable, then additional errors will be incurred and the

measurement accuracy will be aected.

NOTE: The Vp is less well dened with unshielded multicore cable,

including power cable, and is lower when a cable is tightly wound on a

drum than when installed.

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Fault Mapper Pro®Model CA7027

CHAPTER 4

OPERATION

4.1 Principles of Operation

The Fault Mapper Pro®works by measuring the time taken for a signal

to travel to the far end of the cable under test, or to an intermediate

fault and return. The velocity at which the signal travels Vp (Velocity of

Propagation) will depend on the characteristics of the cable.

Based on the selected Vp and the measured travel time of the test pulse,

the Fault Mapper Pro®calculates and displays impedance anomalies and

their distances along the cable.

4.2 Accuracy and Velocity of Propagation (Vp)

The Fault Mapper Pro®measures distances to faults and cable lengths

to an accuracy of ±1%. This measurement accuracy is based upon the

correct value of Vp being used for the cable under test, and homogeneity

of the Vp along the cable length.

If the Vp is set incorrectly by the operator, or the Vp varies along the

length of the cable, then additional errors will be incurred and the

measurement accuracy will be aected.

See § 4.8 for setting the Vp.

NOTE: The Vp is less well deﬁned with unshielded multi-conductor cable,

including power cable, and is lower when a cable is tightly wound on a

drum than when it is installed in a linear fashion.

Correct measurement of fault distances is also dependent on the cursor

being positioned accurately by the operator.

When locating faults with the

Fault Mapper Pro

the cursor should be positioned at the beginning of the

feature on the cable waveform as shown below.

Vp=72% Z=100Ω

621ft

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