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Electronics Testing Equipment

Burn-in Test Equipment

Description :-
Burn-in test equipment is also known as life testing equipment and is largely used in semiconductor industry for testing the quality of an integrated circuit, application-specific integrated circu its, printed circuit board and other microprocessors. The equipment sometimes makes use of specific machines to test memory modules, linear components such as voltage regulators, logic modules, mixed signal components such as analog switches and multiplexers, and discrete components such as diodes and transistors.
Salient Features:

  • The equipment uses raised voltages, temperatures and power cycling to evaluate high power chips, boards or products.
  • The equipment consist of ovens that typically operate between -55o and 150oC.
  • Provided with a power supply for applying a predetermined power supply voltage through a higher level power supply line and a lower level power supply line.
  • The equipment stimulate any potential failures in substandard products, known as the “infant mortality” of a device in the semiconductor industry.

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Capacitance Testers

Description :-
Capacitance testers are mainly used to test the performance and capabilities of capacitors, particularly their capability of holding or storing an electrical charge. It is very important to conduct capacitance testing to detect any leakage in capacitors, which may reduce overall effectiveness of a circuit or lead to electrical breakdown of a device.
Uses & Applications of Capacitance Testers :
This technology finds wide application in a number of industries. Some of the popular industries are:

  • Used to perform capacitance continuity test.
  • Identify when a capacitor is weak or leaking.
  • Identify whether a capacitor is open and not storing a charge.
  • Signal processing.
  • Power supply applications.
  • Computer motherboards.

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Continuity Tester

Description :-
Continuity tester is an electrical test equipment used to examine whether current flows between two points or whether an electrical path can be established between two test leads.
The tester comprises of an indicator that is connected in series with a source of electrical power, usually a battery terminating in two test points. The indicator is activated when a complete circuit is established between the two test-leads.
Application :
The common applications of continuity testers are:

  • Cable testing
  • Harness testing
  • Automotives
  • Automated product testing
  • Commercial application
  • Military application
  • Aerospace application
  • Domestic & industrial wiring testing

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Current Leakage Testers

Description :-
Current leakage testers are devices that are used to measure the amount of current that passes through a ground conductor. These devices can be used both during normal and single-fault conditions to determine whether electrical devices pose a shock hazard.
Salient Features & Uses :
These equipment find a wide application in the following areas:

  • The tester consists of a measuring device or probe that gets connected to a voltmeter that displays root mean square values.
  • The tester also includes a circuit featuring specific frequency and resistance.
  • Available as manual, semi-automatic and automatic types.
  • Common testers include an RS232 serial bus or a parallel port designed for connecting to a printer.
  • There are some leakage testers, which consists of a general-purpose interface bus and are designed to connect to computers, peripherals, and laboratory instruments.
  • These devices differ in terms of current leakage range, communications, resistance range and special features.
  • The leakage testers meet the requirements of various national and international standard organizations.
  • Provided with a rapid cut off system to protect the device from high voltage or current.
  • Provided with front panel lockouts that prevent any damage to the instrument during testing.

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Emf Meter

Description :-
EMF meter or Electromagnetic field meter is a scientific instrument used for measuring Electromagnetic radiation. It is also referred to as EMR meter or Electromagnetic Radiation Meter.
Uses & Applications :
There are applicable in many fields. Some of the areas where they are commonly used are:

  • Detecting magnetic field emissions from equipment like transmission lines, computers , electric blankets, electric appliances, televisions, etc.
  • Used by people with pacemakers, office workers, welders, etc.
  • Serve as source of interference for computer, audio; and other sensitive equipment.
  • Measure electromagnetic field radiation levels from fans, electrical appliances, wiring, and power lines.
  • Used in Paranormal research.
  • People with pacemakers, office workers, sewing machine operators, welders also use use EMF meters.
  • Sources of interference for computer, audio and other sensitive equipment.

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Emi/rfi Testers

Description :-
RFI/EMI Testers are used to monitor the presence of undesirable electromagnetic interference (EMI) and radio frequency interference (RFI) in an electrical equipment. EMI and RFI are electromagnetic emissions ejected by electrical circuits. They are a sort of disturbance that may be man-made or natural, and which causes an undesirable response or degradation in the performance of an electrical equipment.
EMI/RFI testers identify interference that could potentially cause a failure, which might interfere with medical equipment or halt a manufacturing process.
Applications :

  • Military Equipments
  • Medical Equipments
  • Electrical Devices
  • Electronic Devices

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Frequency Synthesizer

Description :-
A frequency synthesizer is an electronic device that produce frequencies related to a reference frequency.
There are various techniques available for frequency synthesizers. They use phase-locked loops, electronic circuits that consist of a phase or frequency detector, low pass filter; and voltage-controlled oscillator. The selection of synthesizers depend on several factors such as cost, complexity, frequency step size, frequency range, settling time, switching rate, phase noise, and output power. Additional factors like reference spurs, phase noise and lock time are also important in selecting frequency synthesizers.
Applications :
These synthesizers are widely used in many fields. Some of the areas where they find their application are:

  • Wireless base stations
  • Personal Digital Assistants.
  • Broadband Wireless Access
  • Satellite Communications
  • Local Area Networks

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Function Generator

Description :-
A function generator is an electronic test device that is commonly used to generate electric waveforms. The waveforms generated by these generator can be either repetitive, or single-shot, which requires some kind of internal or external activating source.
It is capable of generating different types of voltage patterns at various amplitudes and frequencies. Response of a circuit to common input signals can also be tested using these generator.
Applications :
These synthesizers are widely used in many fields. Some of the areas where they find their application are:

  • Function generator system includes hookup cable and instruction manual.
  • These generators can be analog or digital.
  • Analog function generators usually generate a triangle waveform, which serves as the basis for all of its other outputs.
  • Like most signal generators, function generators may also consist of an attenuator and various means of modulating the output waveform.
  • These generators often have the ability to automatically and repetitively sweep the frequency of the output waveform between two operator-determined limits.
  • It consist of in-built frequency counters to accurately display and set output frequencies.

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Hipot Testers

Description :-
These are electrical safety test devices that are commonly used for performing electrical compliance tests. There are different types of measurement performed by hipot testers including AC dielectric strength, DC dielectric strength, AC/DC selectable, arc detection or tracking, insulation resistance and earth continuity.
Applications :
These synthesizers are widely used in many fields. Some of the areas where they find their application are:

  • Electrical apparatus
  • Electronic circuits
  • DC field testing of cables
  • Terminations
  • Motors
  • Generators

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Logic Analyzer

Description :-
Logic analyzers are devices that are used to monitor the performance of computers or to detect problems in other electronic systems. They are digital systems analysis tools that display signals in a digital circuit that are too fast to be observed by a human eye. This device enables digital hardware and software designers to detect and analyze the source of exlusive problems that threaten product development schedules.
Salient Features:

  • Generally, logic analyzers make use of an oscilloscope to present complex digital data to a user, thereby allowing the user to check particular operations of the electronic system.
  • Proper selection of logic analyzers is important and it requires an understanding of application requirements and an analysis of performance specifications.
  • There are some analyzers that work in association with personal computer (PC) to troubleshoot and verify performance parameters of digital circuits.
  • PC logic analyzers use special connectors or probes to test different circuits.
  • These analyzers can work in mixed signal systems that use both analog and digital signals.
  • The PC based analyzer is controlled with easy to use Windows software.

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Megohmmeters

Description :-
Megohmmeters are mainly used for testing the breakdown strength of electrical insulation. They generate high voltage and low current signals for conducting the test. These meters have derived their name from the fact that the insulating resistance of a properly designed product is expressed in megohms (MO).
Salient Features:
These synthesizers are widely used in many fields. Some of the areas where they find their application are:

  • Provided with remote controls that can be controlled by computers or other instruments.
  • There is a built-in calibration that enables operator to calibrate test instruments without removing them from the test location.
  • Comes with warning indicator lights, which indicate pass or fail conditions and mostly work in association with audible buzzers or alarms.
  • Megohmmeter devices are often interfaced with programmable logic controllers in automated test environments.M
  • Supplied with a rapid cutoff circuitry for protecting electrical devices from excessively high levels of voltage or current.
  • Have user-selectable output frequencies.
  • These meters are also available with printer ports and scanner ports.
  • These devices vary in terms of display and interface technologies

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Ohmmeter

Description :-
An Ohmmeter is an electrical measuring instrument that is used to measure electrical resistance, which is the opposition produced to the flow of an electric current. It can also be used to measure the electrical resistance of a conductor.
Applications :
These synthesizers are widely used in many fields. Some of the areas where they find their application are:

  • A meter generally includes a voltmeter; and often an ammeter.
  • In general usage, the instrument operates by using the voltmeter to measure a voltage drop and then converting the reading into a corresponding resistance reading.
  • The resistance reading is indicated through a mechanical meter movement that operates on electric current.
  • In most cases, a meter is supplied with an internal source of voltage to produce the necessary current to operate the movement, and also appropriate ranging resistors to allow just the right amount of current through the movement at any given resistance.

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Pulse Generator

Description :-
An Pulse generators are electronic testing equipment that are used to generate pulses. They can either be internal circuits or pieces of electronic test equipment. Pulse generators can either be internal circuits or pieces of electronic test equipment used to generate pulses.
Salient Features :
These synthesizers are widely used in many fields. Some of the areas where they find their application are:

  • Generally, simple pulse generators allow control of the pulse repetition rate like pulse width, frequency and the high and low-voltage levels of the pulses.
  • There are some sophisticated pulse generators that may allow control over the rise time and fall time of the pulses.
  • Usually, these generators use different techniques for their operation. Thus, they may use digital techniques, analog techniques, or a combination of both techniques to form the output pulses.

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Rf Field Intensity Meters

Description :-
RF field intensity meters are instruments that are globally used for measuring the strength of an electromagnetic field. They are a kind of receiver that can detect buried or hidden piping, equipment and ferromagnetic ores.
Applications :
The instrument finds application in the following areas:

  • Hospitals
  • Medical Centers
  • Submarines
  • Military Installations
  • Research Organizations
  • Sensitive Manufacturing Facilities

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Signal Tracer

Description :-
Signal Tracer A signal tracer is an electronic test equipment used for monitoring audio signals and other electronic circuitry. It is a simple high gain, low noise audio amplifier .
Applications :
These synthesizers are widely used in many fields. Some of the areas where they find their application are:

  • Tracer is a simple device and is mostly powered by battery.
  • It generally includes an amplifier and a loudspeaker.
  • The device is normally supplied with an optional diode detector, which helps in detecting amplitude-modulated signals.
  • The diode detector is only sensitive to amplitude modulation but it can also be used for testing circuits that are normally used for other modulation schemes such as FM radios.
  • The device is usually packaged into a small, hand-held test probe.
  • Sophisticated signal tracers may display digital levels using LEDs or light emitting diodes.

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