AEMC CA7027 User manual

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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2 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 3
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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4 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 5
2.3 Fault Mapper Pro®Features
2
3
4
5
6
7
8
FAULT MAPPER PRO
MODEL CA7027
TEST / TDR /
Graphical TDR
AEMC Instruments
Fault Mapper Pro
VX.X
1
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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6 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 7
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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8 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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