Saelig's PFM3000 handheld frequency counter operates from below 3Hz to above 3GHz
Saelig introduces the PFM3000 handheld frequency counter, which can measure signals from below 3Hz to above 3GHz. Despite its compact size, the PFM3000 uses the reciprocal counting measurement technique to achieve high measurement resolution at all frequencies. The system yields up to eight digits of resolution per second of measurement time and can resolve low frequencies to 0.001mHz (0.000001Hz).
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.
Period Measurement is provided for signals in the range from 8ns to 330ms. A selectable low-pass filter reduces the noise on lower frequency signals. A hold key allows readings to be frozen on the display whenever required.
Low power consumption circuitry ensures long battery life, and a Push-to-Measure facility provides an immediate reading with the press of a key followed by an automatic power down after 15 seconds. This ensures maximum battery life when continuous signal monitoring is not required.
PFM3000 is housed in an ABS case measuring 81 millimeters by 173 millimeters by 30 millimeters and weighing less than 200 grams. The large high-contrast LCD with 11.5-millimeter-high characters incorporates 15 annunciators, showing measurement function, measurement time, units, overflow, trigger activity and low battery.