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Test Equipment

LJ Group offers a range of high quality Test and Measurement equipment specially selected to support our teaching systems and products.

The equipment range offers signal sources, meters and oscilloscopes that are relatively easy to use yet provide the learner with typical industry

 standard equipment. In many cases these items of test equipment are referred to in the supporting teaching materials and used as part of the practical activities.

Analog Multimeter



Analogue Multimeter

The ideal, compact-size meters for basic, lowcost test and measurement troubleshooting.

For everyday field service applications or an easy-to-use meter for home, workshop, auto,RV, boat and anything else you need to measure, one of these meters will satisfy your requirements. In addition to AC, DC and resistance measuring, each meter also includes battery testing capabilities to identify the state of charge for common 1.5V and 9 V batteries.

Each meter includes Tech-Preferred™ safety test leads and the protective holster typically only found on more expensive meters, for a ready-to-use solution.

The Multimeter will perform AC and DC checking and open/short resistance tests ease and dependability. Measures to 500 volts AC or DC, resistance, and DC current and batteries.


Digital Multimeter



Digital Multimeter

A well-designed, compact, hand-held digital multimeter that will meet all the voltage,current and resistance measurement requirements of the LJ microelectronic and microprocessor systems. The instrument has an accuracy of 0.5% together with a high-contrast 3.5 digit liquid crystal display with automatic decimal point, zero adjustment and polarity indication ensures that precise readings are obtained.

The instrument is supplied complete with test leads, battery and operating manual rated sweep


Dual Channel Oscilloscope



Dual Channel Oscilloscope

This unit provides a bandwidth from 20 to 35MHz and sweep rate of 10ns/div. and an auto triggering system. The OSC35 is ideal for waveform display in the DC to 70MHz frequency range

A key feature is the vertical amplifier’s pulse fidelity limiting overshoot to only 1%. The OSC35 offers a fast rise time 1kHz/1MHz Calibrator, permitting high quality probe compensation across the entire frequency range. An Overscan Indicator assists in vertical display amplitude and position adjustment.

The unit is capable of triggering on input waveforms over 100MHz and on signal levels as small as 0.5 division. An active Video Sync-Separator permits detailed examination of complex TV signal inputs. The built-in component tester is equipped with a stabilized measuring voltage. The use of a switching power supply minimizes both weight and power consumption and universally accepts a wide range of input power line voltages, without the requirement to change jumpers or switch positions. The OSC35’s CRT is fully mu-metal shielded against outside magnetic fields.


Function Generator



Function Generator

2MHz Function Generators:
bullet0.002Hz to 2MHz frequency range
bulletHigh waveform quality at all frequencies & levels
bullet1000:1 frequency change on each range
bulletPrecision internal lin/log sweep (TG230 only)
bulletInternal/external AM up to 100% (TG230 only)
bulletDigital display of frequency (not TG210)

Digital display of amplitude & offset (not TG210)

The FG2 provides very high waveform quality under all conditions. That means low sinewave distortion, low aberation triangle waves and fast-edged square waves with low overshoot. Unlike many competitive products good waveform quality is maintained throughout the frequency range, and at low output levels. All models have bi-directional variable symmetry at constant frequency from 1:9 to 9:1. The FG2 has the convenience of a digital display. Unlike competitive products the display provides a readout not just of frequency, but of amplitude and offset as well.


Virtual Control Laboratory

( VCL1)



Virtual Control Laboratory

This is a teaching package that will allow the control and monitoring of a DC motor module and command potentiometer, and it includes the following items:
bulletReal time Windows based Virtual Control Laboratory software
bulletCLIO Control laboratory input/output interface module
bulletParallel interface lead for connection between the interface module and the PC

Comprehensive, competency based curriculum material

The software allows the user to divide the screen into four independently configurable sections:


Control Reference signal



The control reference signal can be set from an internal signal generator that can provide sine, step, ramp, sawtooth, random, DC level and pulse waveforms.

The output signal from the CLIO module capable of:

  • Outputting an analog signal while measuring voltages representing motor position and velocity

  • Outputting a PWM signal while measuring position and velocity using gray code and slotted disks
  • Simulating a servo system by providing output and velocity signals
  • Simulating a 2nd order system without an integrator


Virtual Instrument Unit



Virtual Instrument Unit

The VLAB2 Virtual Instrument Unit has been specifically designed to provide the user with a complete set of virtual instruments. These run on the student's PC and provide two virtual multimeters, an oscilloscope and a function generator.

The unit is fully compatible with all computer-based learning materials in the DIGIAC 3000 Electronics and AEP Electronics ranges.

While designed primarily for use with existing DIGIAC 3000 Base Units, Experiment Platforms and circuit boards, the Virtual Instrument Unit may also be used in a wide range of other electronic testing and signal monitoring applications.The unit is designed to sit alongside the Base Unit or Experiment Platform, and is connected to the student's PC via a USB cable.

The Windows-based software supplied with the unit provides the following on-screen, virtual instrumentation:


Two built-in virtual multimeters

bulletOne built-in virtual oscilloscope
bulletOne built-in virtual function generator



Logic Probe


Hand-held pen-like probe for analyzing and troubleshooting the logical states (Boolean 0 or 1} of a digital circuit.  It can be used on either TLL (Transistor-Transistor Logic) or CMOS (Complementary Metallic Oxide Semiconductor) integrated circuit devices.