Low-cost function generator sweeps to 20MHz

Upgraded version of low-cost function generator is capable of much higher frequency operation than other generators in its price range

TTi (Thurlby Thandar Instruments) has introduced an upgraded version of its TG120 low-cost function generator that is capable of much higher frequency operation than other generators in its price range.

Most lower-cost function generators use a technology which enables them to operate at up to a few megahertz maximum.

The TG120 utilises an alternative technology which retains satisfactory waveform quality right up to 20MHz.

The generator has a frequency range of 0.2Hz to 20MHz in eight ranges, selected via a calibrated vernier.

It can also be operated in sweep mode by connecting an external sweep voltage.

A sweep range of at least 20:1 can be achieved.

Frequency modulation is also possible.

The TG120 can provide sine, triangle, square-wave and DC level waveforms.

Switchable bidirectional variable symmetry enables variable duty-cycle pulse waveforms and sawtooth waveforms to be generated.

The generator has a main output with a maximum EMF of 20V peak-to-peak from a 50 Ohm source.

An amplitude vernier with a range of 26dB is combined with two -20dB switched attenuators to provide levels down to 10 mV peak-to-peak.

Variable DC offset of +/-10V is available via a centre detent control.

An auxiliary output provides a fixed 0 to +5V level, which is suitable for driving both TTL and CMOS loads.

The TG120 is housed in a robust light grey ABS case measuring 220x82x230mm and weighing 1.5kg.

It is priced at £199 (plus VAT).

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