ANDIG 5379 Instruction Manual

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USER HAND BOOK
FOR
ELECTRONIC CABLE FAULT LOCATOR
MODEL NO - 5379
Prepared & Published by
_______________________
M/S ANDIG SYSTEMS
34/2, 3rd floor, 10th cross, RajajiNagar
1st N Block, Bangalore 560010

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WARNINGS & CAUTIONS
CAUTION!
To avoid serious malfunction of equipment, never open the front panel directly with
bare hands so that ESD is ruled out. Refer to our company’s safety procedures when
working with electronic equipment & systems.
WARNING!
Use only the specified AC adapter. Use of another type of AC adapter can damage
the instrument and create the danger of fire and electrical shock.
WARNING!
 To avoid the danger of fire and electrical shock:
 Never use a voltage that is different from that for which the AC adapter is
rated.
 Do not plug the unit into a power outlet that is shared by other devices.
 Never modify the power cord or excessively bend, twist, or pull it.
 Do not allow the power cord to become damaged. Do not place heavy
objects on the power cord or expose it to heat.
 Never touch the AC adapter while your hands are wet.
 Should the power cord become seriously damaged (internal wiring
exposed or shorted), contact the manufacturer to request servicing.

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LIST OF CONTENTS
Para No. Description Page No
CHAPTER 1 LEADING PARTICULARS & GENERAL DATA
1.1
1.2
Introduction
Technical Specification
CHAPTER 2 BRIEF TECHNICAL DESCRIPTION
2.1
2.2
2.3
PRINCIPLE OF OPERATION
FRONT PANEL DESCRIPTION
MENU FLOW DIAGRAM
CHAPTER 3 UNPACKING AND REMOVAL OF PRESERVATIVES
3.1
3.2
3.3
Housing description
Unpacking Procedure
Preservatives
CHAPTER 4 PREPARATION FOR USE AND INSTALLATION
SPECIFICATIONS
4.1
4.2
Initial Preparation
Installation
CHAPTER 5 OPERATING INSTRUCTIONS
5.1
5.2
Identification of Controls , Switches/buttons and
ports
Operating Instruction
CHAPTER 6 USER’S/OPERATOR’S SERVICING & MAINTENANCE
INSTRUCTIONS
6.1
6.2
6.3
6.4
General
Instrument charging procedure
Unit servicing log and maintenance task
Probable faults & remedial action
CHAPTER 7 MISCELLANEOUS
7.1
7.2
7.3
Station list including Accessories and carried spares
List of tools for user maintenance
Handling, Packaging, Stowage/Storage and
Transportation instructions.

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Nominal V/2 values for different types of Cables
S.No Cable Type Nominal V/2 Variation in V/2
1 Jelly 90 88 to 95
2 Paper 102 102 to 110
3 Co-axial 123 122 to 130
4 PVC 72 70 to 74
Note:
1) Nominal value of V/2 for same type of cable varies depending on the gauge of
the conductor and the insulation material.
2) For better results V/2 value of cable under test should be determined using a
pair of known length in the same cable.
3) Preset value of V/2 can be changed either through “Others” in “Setting” mode or
directly in Pulse Echo Model to display preset value in “Cable Type” box & then
changing it using 67 arrow keys
4) V/2 value of 0.9mm drop wire is 69 ± 1 & V/2 value of 1.5mm PVC power cable
is 74 ± 1

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Block diagram shows signal flow path & processing sequence
Leading Particulars & General Data:
ELECTRONIC Cable Fault Locator is basically a High Resistance Fault Locator to mainly
locate Low Insulation & Contact faults in UG Cables. Its simple design, ease of
operation, very light in weight makes it an ideal tool for even an inexperienced
person to locate the faults. This instrument can also be used to measure distance
to fault in case of clear open faults using pulse reflection principle.
Output
Port
Pulse
Genera
tor
Receive
input via
menu
Power
Supply
Sampling
Circuit
Signal
Analysis
Display
on LCD
Waveform
Storage
Cable
under
test

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Introduction:
Electronic Cable Fault Locator Model 5379 works on a proven pulse reflection
technique in combination with a Bridge network to detect most common faults
quickly. It transmits a pulse of controlled width and amplitude along the cable. The
velocity of propagation will majorly depend upon the dielectric surrounding the
conductor. Whenever there is a change of dielectric constant due to fault the pulse
is partially or wholly reflected back & both incident & reflected pulse are displayed
on a 240 x 1218 pixels LCD Display. The time between the incident and reflected
pulse is directly proportional to the distance.
The distance to fault is computed internally and displayed on the 5” Graphic LCD
display in METERS directly.
Purpose To locate the Open , Short & Low Insulation type of faults in
a cable with direct read out of the fault distance in meters
Pulse Widths 50ns to 2500ns ( 4 steps )
Pulse Amplitude
Output
30 V ( ± 10%)
Output
Connector
Banana Sockets – 2nos ( L1 & L2)
V.O.P User settable ( 62 to 135 ) Fixed VOP for standard cable also
present
Display 5 inch Monochrome ( 240 x 128 ) LCD with white Backlight
Max Range Depending upon the cable type & gauge – Upto 20Kms
Accuracy ± 0.5% of readout
Battery 11.1 V, 4400 mAh Rechargable Lithium Ion Battery
Adapter 16V / 1 Amp

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Dimensions 270mm x 250mm x 120mm
Enclosure Waterproof ABS plastic
Operating
Conditions
-15⁰ C to 60⁰C / 95% RH
As per QM 333 , Category D
Test Report : REL/16/K/011 dtd 19th Dec 2016 conducted at
M/s ITI, Bangalore
Accessories Battery, Adapter, Connector cables & Carry Case
Power
Consumption
200 mA
Restriction of
Mode of
Transport
NON HAZARDOUS MATERIAL .
NO RESTRICTION ON MODE OF TRANSPORT.
Physical Dimensions : Width : 265 mm
Height : 195 mm
Depth : 140 mm
Weight : 3.0 Kgs
Distance Accuracy : For Open/Short Faults : +/- 1 %
For Low Insulation Faults : +/- 0.5 %
Serial I/O Port : RS-232
Power : Internal,11.1V Lithium Ion 4400mAh
Test Signal : Duration : 100 n sec and 2000 n sec
Amplitude : 30V +/- 20 %
Charging Source : External 16V DC 1 A Adaptor

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Operating Time : 8 Hours continuous without Back light
Environment : Operating Temperature:
0 to 50 Degree C
Display : 5 inch ,monochromatic , 240 *128 Graphic
Display with backlight
Maximum Range : For Open/Short Faults : 15 Kms
For Low Insulation Faults : 15 Kms
Testable Low Insulation : 2 ME (Max)
Circuit Protection : Upto 250 V AC
Self Check : Auto Check
Automatic Noise Filter , Low Battery Indication is provided .
Packing Diagram
1. Equipment Accessories
2. Equipment packing

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FRONT PANEL DRAWING & DESCRIPTION:
 POWER ON : The instrument performs self check & on completion
will display.
 SELECT : When Pressed selects high lighted menu
 MENU : When Pressed Main Menu is displayed
 : Moves Up & Down the high lighted Menu
   Moves Left or Right the selected cursor or /
 increments ,decrements function selected in
multifunction box.

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 RANGE & GAIN : A combination of Range & Gain is used to increase the
pulse width so that the signal can propagate over a longer
distance. (Select range using arrow keys.)
 ZOOM : It displays current zoom status from zoom1-zoom 7, At
zoom 7, displays maximum expanded waveform.
(Select Zoom level Using arrow keys)
 CUR : Selects Cursor 1 or Cursor 2
 CAL : Not Used
 GAIN : Selects Gain level (Default sets to Gain 1) & displays
status in multifunction box.
 START : When pressed starts testing the Cable Pair under test
 PRINT : No Used
 B/L (BACK LIGHT) : Switches ON Back Light
 LINE 1 : Socket pair for connecting faulty pair under test
 LINE 2 : Socket pair for connecting good reference pair
 RS 232 : Connector for PC Interface
 PRINTER : not used
 DC Socket : Socket for front panel for battery charging (12 To 16 VDC)
NOTE: Following keys are used only in Pulse Reflection mode. When pulse
(Waveform) is displayed on LCD.RANGE, b) ZOOM, c) GAIN, d) CURSOR.

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PRINCIPLE :
HIGH RESISTANCE MEASUREMENT FOR LOW INSULATION FAULTS
Line 2
Fig 1A
Fig. 1-A Indicates 2 pairs of isolated cable of length 'D'. The fault F ‘F' of resistance
‘R’ Ohms lies at a distance LP from end P & LQ from Q such that LP + LQ = D.
Fig 2A
D
C
B
A
End P
D
LQ
LP F’
F
End Q
Line 1
Good pa
ir
F
ault
location
Loop at far end
of good pair
& connect to faulty pair
Red
Black 5379
Red
Black

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Fig 2-A shows schematically the test procedure adopted. At the remote end Q the
terminals Good Pair i.e A and B are looped and extended that loop to point D of
faulty pair by means of a short jumper. At testing point at P-END Low Insulation
Fault Locator is connected. Connect the good pair to LINE 2 and Faulty Pair to LINE
1. The extended loop of good pair must be connected to the Faulty limb and connect
that limb to Black connector of Instrument as shown in Fig 2-A.
PHOTO OF CONNECTORS :
PRINCIPAL : Open /Short fault location using Pulse Echo Principle.
The Instrument works on a proven pulse reflection technique. A defined pulse is
transmitted on a Cable Pair under test. The Pulse travels along the pair length at a
fixed velocity of propagation depending on the dielectric of the cable. A part of the
Pulse energy reflects back from the point where the characteristic impendence of
Cable changes due to fault occurrences. The time taken by the pulse to reach the
fault location & return to the source multiplied by the velocity of propagation gives
twice the distance to fault. This is computed internally & distance to fault is

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MENU FLOW :
Pulse
Echo / TDR
Setting
Normal Scan
Cable Type
Gauge
Jelly
Paper
Co-Axial
Others
PVC
0.4 mm
0.5 mm
0.63 mm
0.9 mm
1.5 mm
Low
Insulation
Fault /
Bridge
Double Limb
Mixed Gauge
Settings
Mixed Gauge
Single Limb
Tem
perature
27 C
( default)
Insulation
Resistance
Foreign
Potential
Scan
Scan
Normal Scan
L2- L20 Scan
L1 & L2-L20
Differential
Scan
Settings
Scan
Scan
Scan

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PURPOSE:
This section provides information on description & operation of “ANDIG” Model
5379 ELECTRONIC Cable Fault Locator.
DESCRIPTION:
“ANDIG” Model 5379 is a “Low Insulation Fault Locator” that digitally displays
distance to fault of all types. It is designed for use on UG Telephone Cable for
Installation, Maintenance & Cable Repair by Technicians. Its simple operation helps
even inexperienced field technician to successfully locate Low Insulation Faults
(Ground Fault & Crosses) even in the presence of foreign potentials. In TDR mode it
locates open /short faults in all types of cables.
LOW INSULATION FAULT LOCATION OPERATION:
“ANDIG” Model 5379 is pre-calibrated at factory. No field calibration is required.
OPERATING INSTRUCTIONS
STEP BY STEP PROCEDURE
1. Power ON : The instrument performs self check & on completion will
display Menu.
2. Main Menu
Software version 1.1/010803
1. Pulse Echo Reflection : for Open & Short Faults
2. Low Insulation Faults : for Low Insulation Faults
3. Insulation Resistance : for measuring Insulation Resistance
4. Foreign Potential : for measuring Foreign Voltage on
Cables
3. Using  up –down key move highlight bar to the proper function,
Ex: - Open/short faults select Pulse Echo Reflection mode, for Low

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Insulation Faults select Low Insulation fault mode etc.
4. PURPOSE: Check faulty pair for type of fault.
1. Connect faulty pair (Limb A & B) under test to Line 1.
2. Using  arrow keys select Low Insulation Resistance.
3. Press Select for Normal Scan. (Display <5000Kohms indicates Low
Resistance Fault, Display >5000Kohms indicates Break Fault or good
pair. Display = 0 K ohms indicates Short / Loop Fault.
4. Repeat above test for fault between Limb A & Earth, Limb B & Earth
5. PURPOSE: To Locate Open/Short faults in U/G Telecom cables
a. Select Pulse Echo Reflection it displays
PULSE ECHO REFLECTION
1. Normal Scan
2. Reference Scan
3. Settings
1) By default instrument sets to 0.5mm gauge and cable type jelly filled
2) To change gauge & type of the cable go to settings and do necessary
changes.
3) Using  up –down key highlight Setting (Refer Menu Diag.) and Press
Select Key.
5.1 Connect pair under test to LINE1 Terminals
Select Pulse Echo Reflection & Select Normal Scan
It will display the Waveform, both incident and reflected pulse appears on
screen. If the fault is at less than 1 km distance, use Zoom 4, Zoom 3 to check
whether reflected pulse appears within the screen along with incident
pulse.
Example:

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For Open Fault
Cursor 1 Cursor 2
For Short Fault
Cursor 1 Cursor 2
Note: Press Cursor key CUR 1 or CUR 2 appears in the multifunction box. Use arrow
keys  to move & align cursor 1 to starting point of incident pulse.
Press Cursor key again so that Cursor 2 appears in the multifunction box. Use arrow
keys  to move align cursor 2 to the starting point of reflected pulse.
Incident Pulse
Reflected
Pulse
Incident Pulse
Reflected
Pulse

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If reflected pulse is not displayed clearly in zoom 5, zoom 4, zoom 3 then
5.2 Press Range & Gain : Using Keys Select range depending on the distance to
fault.
Range & Gain Table ( indicative table )
Sl.N
o
Range
Gain
Distance covered
(
in mtrs
for
0.9
sq mm wire
)
1
1
1
U
pto
1000 mtrs
2
1
2
U
pto
2000 mtrs
3
2
1
U
pto
3000 mtrs
4
2
2
U
pto
5000 mtrs
5
3
1
U
pto
7000 m
trs
6
3
2
U
pto
10,000 mtrs
7
4
1
U
pto
11
,
0
00 mtrs
5.3 Press Start : Both incident & reflected Pulse appears on screen. If reflected
pulse is not seen press range & select next range.
5.4 Press Gain : Select Gain 1, Gain 2, for amplifying reflected pulse & Press Start
5.5 Press Cursor : Displays Cursor 1 or Cursor 2 in the multifunction box.
5.6 Using  : adjust cursor 1 to the starting point of incident pulse (The Point
from Where incident pulse starts rising) Cursor 2 to starting point of reflected pulse.
5.7 After aligning cursors to the incident and reflected pulse distance to faulty is
displayed in distance box.
Note:
For better accuracy at different fault distances select Range, Zoom & Gain
positions. For faster cursor movements you can use zoom facilities.
6 PURPOSE: To Locate Low insulation faults in U/G Telecom cables
Basic requirement to conduct this test.

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a) Good (Reference) pair preferably in the same cable in which faulty pair is to
be tested.
b) Looping of both limbs of good pair to the faulty limb at the far end of the
cable under test (Refer Fig - 1).
c) Faulty pair should have less than 2Mohms Insulation Resistance.
Basic requirement of good pair
a) Insulation Resistance (Megger Value) between Limb A & B and between any
Limb to Earth should be more than 5Mohms.
Check Test for Good pair
Select Insulation Resistance Menu
a) Connect Limb A & Limb B to Line 1 & select Scan
After few seconds it display resistance value in K ohms: ------
b) Connect Limb A & Ground to Line 1 & Press Start
After few seconds it display resistance value in K ohms: ------
c) Connect Limb B & Ground to Line 1 & Press Start
After few seconds it display resistance value in K ohms: ------
In all the cases Insulation resistance should be more than 5000 K ohms for
a good pair.
Check Test for Faulty Pair
a) Connect Limb A & Limb B to Line 1 & select Scan in Insulation
Resistance Mode. After few seconds it display resistance value in K
ohms, less than 2 M ohms for fault between limbs.
b) Connect Limb A & Earth to Line 1 & Press Start
After few seconds it display resistance value in K ohms, less than 2 M
ohms for fault between limb A to Earth.
c) Connect Limb B & Earth to Line 1 & Press Start
After few second it display resistance value in K ohms, less than 2 M
ohms for fault between limb B to Earth.
If Insulation resistance is less than 2000 K ohms, the fault can be
located in the pair.

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SET UP CABLE NETWORK.
Case I: Limb To Limb Fault
1. Please check the resistance between limb to limb of good pair using multi
meter to ensure it is properly looped at the far end (say it reads 500 Ohms).
2. Please check the resistance between any one limb of good pair to faulty
pair limb it should read the same resistance as good pair.
3. The faulty limb, which is looped to good pair, should be connected to
black terminal of Line 1 Only, Connect Red terminal of Line 1 to 2nd Limb of
faulty pair for fault between Limb to Limb
4. If Fault is between Limb to Earth, connect Red terminal of Line 1 to earth
6.2 Select Low insulation faults
a) Using  up –down key highlight ‘Setting’ (Refer Menu Diag.) and
Press Select Key.
b) Select the ambient Temperature and Gauge of cable under test.
(By default instrument sets to temp 27 Degree Centigrade and
gauge 0.5 mm)
6.3 Connect good pair to LINE2 and faulty pair to LINE1
6.4Loop the good pair limbs at the far end & extend the loop to one limb of faulty
pair.
Line 1Faulty Pair
Line 2 Good Pair
Red
Black 5379
Red
Black

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6.5 Faulty limb which is looped to good pair at the far end must be connected
to the Black terminal of Line 1 only.
6.6 Press – Normal Scan Final Display after one minute shows
Distance to loop_______mts
Distance to fault_______mts
To repeat the test press Start.
Note: If loop is not extended to one limb of faulty pair Display will indicates
Distance to loop 0 mts
Distance to fault 0 mts
Purpose: To locate Low Insulation faults using only one good Limb
I If single limb is available , connect as shown
Faulty pair
Procedure: (Refer Fig above)
a. Verify good Limb for more than 5M ohms insulation
resistance.
b. Short Red & Black terminal of Line 2 & connect to good Limb.
c. Loop good Limb to faulty limb at the far end.
d. Connect Black terminal of Line 1 to faulty Limb, which is
looped to good Limb.
Red
Black 5379
Red
Black