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“For Good Measure”®

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Product List


Test and Measurement Instruments C.C.

          CK 1985/007464/23

“Tomorrow’s Instruments Today”  —  “For Good Measure” ®

TMI, Established—1982

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English, Afrikaans and Portuguese   Speaking

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AM & FM Signal Generators


Part No   TM1501  

100KHz to 150MHz. Standard Signal generator & FM Stereo/FM-AM Signal generator. RS232 with GP-IB

Part No:  TM1502

100KHz to 300Mhz. Standard Signal generator & FM Stereo/FM-AM Signal generator. RS232 with GP-IB

T+M TM1502 300Mhz AM/FM Signal GeneratorT+M TM1501 150 Mhz AM/FM Standard Signal GeneratorT+M TM1501 150 Mhz AM/FM Standard Signal GeneratorT+M TM1502 300Mhz AM/FM Signal GeneratorT+M TM1501 150 Mhz AM/FM Standard Signal GeneratorT+M TM1501 150 Mhz AM/FM Standard Signal GeneratorT + M T+M TM1502 300Mhz AM/FM Signal Generator

Notes on AM / FM and other Signal Generators.

Signal generators and waveform generators are used to test and align all types of transmitters and receivers, to measure frequency and to generate a signal, waveform or noise source. Signal generators can use AC energy, audio frequency (AF) and radio frequency (RF) to function.

They are also used to troubleshoot various electronic devices and to measure frequency. The function of a signal generator is to produce alternating current (AC) of the desired frequencies and amplitudes with the necessary modulation for testing or measuring circuits. It is important that the amplitude of the signal generated by the signal generator be correct. In many signal generators, output meters are included in the equipment to adjust and maintain the output at standard levels over wide ranges of frequencies. When using the signal generator, the output test signal is connected to the circuit being tested. The progress of the test signal can then be tracked through the equipment by using electronic voltmeters or oscilloscopes. In many signal generators, calibrated networks of resistors, called attenuators, are provided. Attenuators are used in signal generators to regulate the voltage of the output signal. Only accurately calibrated attenuators can be used because the signal strength of the generators must be regulated to avoid overloading the circuit receiving the signal.

Signal generators and waveform generators typically come as a portable or benchtop instrument, a fixed instrument, or a PC-based instrument or module.  Common generator types include continuous wave, function, pulse, signal and sweep. A source that can produce a sine wave is referred to as a CW source.  The frequency and amplitude of the sine wave can be set in most CW sources. Function generators create square waves by applying a bipolar sine wave to a comparator’s input. A pulse is a short burst of signal(s) generated by instrument. Signal generators output signals, or sine waves that carry information.  There are numerous methods for adding information to sine waves.  Basic signal generators have frequency, amplitude and phase modulation capabilities.  More advanced signal generators have pulse and IQ modulation capabilities. A swept source adds the ability to automatically vary the output frequency or amplitude of a sine wave over a range of frequencies or amplitudes in a controlled manner.

Frequency characteristics that are important to consider when searching for signal generators and waveform generators include maximum input channels, frequency range, frequency resolution, frequency accuracy, and switching speed. The maximum input channels refer to the maximum number of all analog input channels, general and specific types. The frequency range specifies the range of output frequencies the generator can produce. The frequency resolution is the smallest frequency increment the generator can produce.  The generator’s internal clock determines the frequency accuracy.  It is a measure of how accurately the source frequency can be set.  Operation features to consider include on board reference, on board oscillator, reverse power protection, and battery powered.  An on board reference is a source of information, usually referring to the clock, which supplies timing information. An oscillator creates the basic electrical fluctuation (AC) that is used to create the waveforms. Reverse power protection prevents signals traveling the wrong direction from damaging the source.

Additional specifications to consider when searching for signal generators and waveform generators include user interface, connections to the host, memory and storage, computer bus, display options, and environmental parameters.

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AM / FM Signal Generators

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Flir Infrared ThermometryTime Group High Time TechnologyLodestar Electronics Acute PC-Based Instruments from Test andMeasurement Instruments C.C.Intercomp "For any Measure"MSR ElectronicsSuperior Electric Powerstatk and h educationalT.M.I.T+M Products

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SEW Instruments

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AM and FM Standard Signal Generators suitable for Stereo with frequencies of 100KHz to 300KHz.

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Brand Names



Air Quality Meters

Alcohol Breath Tester

Alignment Equipment

AM & FM Signal Generators


Audio Generators

Audio Impedance Meter

Automotive testers



Battery Analyser /

Battery Desulphator Charger

Bench DMM’s


Bread Boards

Breath  Alcohol Tester

Cable Fault Locators

Cable Height Meter

Cable Testers


Capacitance meters

Carbon Dioxide meters

Carbon Monoxide meters

Car Testers

Caster / Camber Gauges

Chlorine Meter

Clamp meters

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Colour Analysers

Combination Combo Meters

Concrete Testing

Conductivity  / TDS meters

Contact Tachometers

Continuity Tester

Controller / Monitors

Corner Weight Scales

Current Meters, Bench Type

Data Acquisition Systems

Data Loggers

Decade Boxes

Dew Point Meters

Digital Vernier Calipers

Digital Scales

Digital Multimeters , DMMs

Dissolved Oxygen Meters

Distance Meters

Dust Monitoring

Earth resistance meter

Educational Systems

Electrical Connectors

EMF tester

Eye Tracker

Field Strength Meters

Force gauge

Frequency Counter

Function Generators

GSM Controller

Gas leak detector

Green Hybrid Power

Grid Dip Meter

Hardness tester

HV(High Voltage) Testing

Humidity meter


Inductance Decade Box

Infrared Thermometers

Infrared Thermography


Insulation tester

LCR meter

Leakage Clamp Meters

Logic Analyser

Logic Probes/Pulsers

Lux meter, (Light meter)


Metal Detector


Microwave Leakage

Milliohm meter


Moisture meter


Night Vision Equipment

ORP meter


Oxygen Meters

Pattern generators

Panel meter

PC-Based Instruments

Pen type tester

pH Meters and Probes

Photo Tachometer

Power analyzer

Power clamp meter

Power Supplies

Pressure/Vacuum meter

3 Phase Rotation Tester

Pressure Transducer

Probes, Oscilloscope

Protection Relay Testing

Proximity sensor

Racing Equipment

RCCB tester


Renewable Energy

RF Generators

Resistance Decade Box

Roughness tester


Salt meter

Satellite Testing Equipment


Scales, Digital

Shore Hardness Tester


Soil Moisture Meters

Soil pH meter

Solar Power Meter


Sound level meter

Spectrum Analyser


Student Bench Meters

Stun Guns

SWR / RF Power Meters


TDS / Conductivity Meters

Test Leads

Thermal Imagers



Thermography Courses

Thickness Testers

Tone Generator/ Tracer

Torque meter

Torque wrench

Transformer Testing

Transient Suppressors


TV & Satellite Meters

Turbidity Meter

Ultrasonic Flaw Detector

Ultrasonic Thickness

UV light meter

Vacuum meter

Variable Transformers

Verniers, Micrometers

Vibration meter

Video Scope

Watt meter

Water Tester

Water Testing Meters

Vacuum/Pressure meter

Voltmeters, Bench Type

Voltage Detectors

Voltage Regulators

5 Way® Binding Posts

Voltage Stabilisers

T + M®                      




Time Group


S.E.W. Standard Electric Works

MSR Electronics

Superior Electric


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30th anniversay of Test and Measurement Instruments c.c.

Ph:           +27 (011) 683 4365

Fax:          +27 (011) 683 4461

E-mail:     t.m.i@iafrica.com



NEW  (from 6 January 2016)


Physical   Address:              

3 Angelica Ave,

Glenvista, Johannesburg, 2091



Postal Address:

P.O. Box 1416,


Johannesburg, 2135,


TMI Monthly Specials

This Month’s Special

Thermography—Thermal Imager— Infrared Camera.

FLIR E5 (120 x 90 Pixels)


R 21,150.00 + VAT

while stocks last. 


FREE Thermography

Introductory Course

Included with Lunch.


One Day Course.

Click  Ex-Series  for Spec.

Also: Thermal Imagers

FLIR E4 Thermal Camera