The PFM3000 from TTi is a low-cost, handheld frequency counter that can measure signals from below 3Hz to above 3GHz.
The latest version has an 8.5-digit display, replacing the eight-digit one used previously.
This enables the full potential of the high-resolution measurement technique to be used.
The PFM300 uses the 'reciprocal counting' measurement system to achieve high measurement resolution at all frequencies.
This system yields up to eight digits of resolution per second of measurement time and can resolve low frequencies to 0.001mHz (0.000001Hz).
As well as frequency measurement, period measurement is provided for signals in the range 8ns to 330ms.
A selectable low-pass filter is provided to reduce the noise on lower-frequency signals.
Two measurement ranges are provided.
Range A covers from below 3Hz to above 125MHz via a high-impedance input.
Range B covers from below 80MHz to above 3000MHz via a 50ohm input.
Sensitivity is typically better than 15mV across the range, rising to 25mV at 2.5GHz and 50mV at 3GHz.
A 'push to measure' facility is incorporated, providing an immediate reading on the press of a key followed by an automatic power down after 15sec, ensuring maximum battery life when continuous signal monitoring is not required.
The PFM3000 measures 81 x 173 x 30mm (7 x 3 x 1.2in) and weighs less than 200g (7oz).
