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Press Release for TF930 universal counter from TTi

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Low-cost 3GHz counter has USB control

The TF930 3GHz universal frequency counter, new from TTi, incorporates a USB interface for remote control and read-back.

The new counter has a frequency range from 0.001Hz to over 3000MHz with high sensitivity across the range. The high quality TCXO timebase is stable to within ±1ppm over the full temperature range and provides a low ageing rate. Its short warm-up time allows accurate measurements to be made even under portable battery powered conditions.

The TF930 can measure frequency, period, pulse width, duty cycle and frequency ratio, as well as event counting (totalise). For frequency, period and ratio functions the instrument uses a reciprocal counting technique to provide high resolution at all frequencies. Eight significant digits of answer are produced in a 1 second measurement time, nine digits in 10s and ten digits in 100s with a granularity of less than 2 counts in the least significant digit.

For frequencies up to 125MHz the input is configurable as 1MOhm or 50Ohm impedance, AC or DC coupling, and 1:1 or 5:1 attenuation. The threshold is fully variable and the active edge can be positive or negative.

The counter incorporates a USB interface which allows it to be remotely controlled via a computer’s USB port. The remote commands of its predecessor instrument, the TF830, are compatible with the TF930 command set.

The TF930 operates from internal rechargeable NiMH batteries which give typically 24 hours operating life. The universal AC charger supplied will recharge the batteries in less than 4 hours and can be used for continuous AC operation. The instrument can also be powered from a standard USB port.

The TF930 measures 260 x 88 x 235mm and weighs less than 1kg.

TF930 picture

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