The PM 6673...76 series are universal frequency counters offering automatic time and frequency measurements with options for IEC‑625/IEEE‑488 bus, BCD, and analog outputs. They support a wide frequency range, multiple measurement modes, and an optional rechargeable battery for field use.
The manual covers safety requirements, installation steps, front‑ and rear‑panel controls, measurement theory, and practical operating procedures, including self‑test, grounding, and power‑supply configuration.
| Frequency range (Sine) | 10 Hz – 120 MHz (PM 6673) |
|---|---|
| Frequency range (Pulse) | Minimum 0.1 Hz |
| Input sensitivity (LF‑input, channel A, Sine) | 10 mV rms (20 Hz…120 MHz) |
| Power requirements (line) | 115/230 V, 25 VA |
| Dimensions | Width 210 mm, Height 89 mm, Depth 280 mm |
| Weight | Approx. 2.5 kg (net) |
| Operating temperature range | –5 °C to +50 °C |
Press the CHECK button; this connects the internal 10 MHz reference to the logic circuits and enables a self‑test of the measuring functions.
Set the line‑voltage selector on the rear panel to 115 V or 220 V before connecting the counter to the mains.