Telecom Consultants & Construction Co.

Features:

• Meets Current European PTT / TEC (India) Standards
• Built-in Timer to Save Battery Energy
• Time Domain Reflectometry Technique
• Built-in Battery Charger
• Direct Digital Readout in Meters
• Low- Batt Indication on LCD Display
• 4½ Digit LCD Display
• Tests any Type of Paired or Coaxial Telecom Cables
• Impulse Display on CRT
• Test Modes Direct with Resistive Matching Pair Comparison L1/L2 Difference Coupling L1 - L2
• ±1% Accurate
• Shortest Fault Location
• Easy to Use, Light Weight, Rugged, Portable with Carrying Case
• 10m - 10Km Ranges

Descriptions:

The Cable Fault Locator Model 3049 is a portable field instrument working on the TDR principle and is designed to locate faults in unloaded telecommunication cables. The instrument is designed to work on one line (L1), to compare L1 and L2 or to display the difference. Crosstalk points such as split pairs can be located by transmitting the pulse on L1 and receiving it on L2.

Features

• Direct Digital Distance Readout
• 4½ Digit LED Display
• Time Domain Reflectometry Technique
• Impulse Display on CRT
• ±1% Accurate
• 5 Km & Above Range
• Test any Type of Paired Conductor and
• Coaxial Cable
• Battery Powered, Light Weight
• Self Check Facility
• Low Batt Indication
• Built in Timer to Save Battery Energy
• Easy to Use
• High Voltage on Lead Indication
• Compares Good Pair & Faulty Pair

Description

APLAB Model 3039-I cable fault locator is portable, rugged, simple to operate and which can taste, locate & display on the CRT the short & open type of faults in long run of coaxial and twisted pair in telephone and other communication application. It measures the distance to the fault, directly giving a digital readout.

It also gives an insight into the joints, cable changes and faults aiding location of the fault.
Model 3039-I works on the principle of Time domain reflectometry (TDR) and locates cable faults upto an approximately distance of 5 Km & above with an accuracy of ±1%. The velocity of propagation (VOP) V/2 for each cable type is set on a three digit thumbwheel switch.

It sends out an electrical narrow pulse of 35 to 1800ns width depending on distance to be coveredwith a fast rise time. The pulse is then reflected back to the unit from the cable impedence mismatch or the fault location.

The distance of the fault is then computed automatically and indicated in meters or feets on a
large LED display which will eliminate the manual calculations. Fault type is also identified by the graphic display of the shape of the reflected pulse.

It is simpler to operate and less error prone than manual bridge
technique. It being light weight and portable can be carried on the field and can be operated for at least 8 hours on the internal rechargable batteries. Model 3039-I is provided with rechargeble batteries and an in built battery charger.

The instrument has menu driven insulation tester capable of giving IR test up to 100 V DC and displays insulation resistance in Meg Ohm.

A healthy core/pair is used to get the loop resistance of the cable under test. When the faulty core/pair is connected to the instrument, balancing of the bridge is done automatically by the intelligent circuit incorporated in the instrument. However, the balancing can also be done manually in specific cases.

After the balancing, the result of the fault distance from sending end is displayed on the screen.A Time Domain Reflectometer (TDR) has limitations of locating open and short circuit faults only. Low insulation faults are beyond the scope of such instruments. This calls for an instrument that can offer complete solution to the problems faced in the field.

TFL B5 combines a TDR and an advanced bridge capable of locating any fault on telecommunication and pilot cables. It can locate open or short circuit faults up to 15 km length with precise accuracy on TDR mode. Further, the advanced bridge mode can locate any low insulation fault up to 20 M Ohm.

Additionally, there is provision of IR measurement of the cable insulation at 100 V DC for carrying out regular insulation tests.

Features

• Battery operated, light weight ABS plastic housing
• Easy to use Menu driven operation
• Automatic and Manual measurement
• Data storage of test settings
• Data storage of last test results
• Use of high speed micro-controller
• Use of high resolution back-lit LCD display
• Very low power requirement with built in NiMh battery
• Capable of giving more than five hours of uninterrupted working
• Built in battery charger
• Improved minimum and maximum fault location ranges
• Tests any type of telecom, coaxial, network or power cable
• Zoom for detailed examination around fault point
• IR Measurement of insulation properties
• Low insulation fault distance measurement with bridge method
• Low battery indication
• Auto shut down under idle running condition
• Self check facility

Specifications

Fault Distance Range (In Meters)	50m, 100m, 200m, 800m, 1600m, 3000m & 6000m
Measurement Mode	Autoor Manual
Fault Measurement Accuracy	+1% + 1m
Pulse Width	30 nsec to 3msec
Pulse Waveform	Square
Pulse Amplitude	24Vpp
Cable Constant (VOP) range	50 to 150 m/ps
Output Impedance	50-150 Ohms
Sampling Speed	500 MS/s
Memory Location	Sufficient to store 20 Wave-forms set-ups
Serial port for PC/Printer	RS 232C
Resolution	20 cm
Gain Range Control	/1:10
Display Readout	Liquid Crystal Display 320 x 240 Pixel (Back-lit)
Power Supply	7.2 V rechargeable Li - Ion battery 2.2 AH Capacity
	built in charger
Timer	Built in timer automatically switches off after 5
	minutes to save the battery power.
Alarm	It gives audible alarm when high voltage (> 50V)
	appears on test leads, ensuring operator's safety
Weight	1 kg approx.
Dimensions	205x 160x54 mm approx.

 

 

Compact and lightweight cable fault locator TFL 5 is most suitable for field application. It uses state of the art digital technology for precise location of faults in underground metallic cables.

It is a menu driven microprocessor based Time Domain Reflectometer (TDR), which can locate open or short circuit faults on any type of metallic cables.

The advanced circuitry utilizes high-speed sampling of 500 Ms/s for better resolution of echograms.
The instrument incorporates a unique feature of automatic placement of measuring cursor at fault point. This makes it totally user friendly and any operator having minimal knowledge can successfully locate the fault.


Features

• Very small size, easily portable light weight, Palm-held ABS plastic housing
• Easy to use Menu driven operation
• Automatic and manual measurement modes by cursor
• Data storage of test settings for quick recall
• Data storage of up to 20 Test results
• Printout facility with Ext. Printer or a PC via RS 232 Serial port
• Use of high speed Micro-controller
• Use of high resolution back-lit LCD Display
• Very low power requirement with built in Lithium-Ion rechargeable batteries Capable of giving 8-10 hrs. of uninterrupted working