1Hz-4.5GHz HF RF Frequency Counter Meter for Measure Pulse&Radio Frequency HZ332 is a small frequency meter that can measure low frequency and high frequency signals It also adds a 500KHz pulse accumulator It is simple to use, and different test methods can be selected through buttons Applications: *To measure pulse frequency *To measure radio frequency Technical Parameters: 1. Measuring low frequency: 1Hz 10MHz 2. Measuring low frequency voltage: 0.8V to 7V 3. Measuring low frequency resolution: 1 Hz 4. Measuring high frequency: 10MHz 4.5GHz 5. Measuring high frequency voltage: -12dBm to+10dBm 6. Measuring high frequency resolution: 1KHZ 7. Working voltage: 7 12VDC 8. Working current:<50mA 9. Working temperature: -40 To 65 10. Storage temperature: -40 To 65 11. Size: 57 x 50 x 20 mm/2.2 x 2 x 0.8 "(LxWxH) Package included: *1 x Frequency Meter Attention: *The measured low frequency signal is not an AC signal Connect a capacitor of about 1OuF in series with the input signal terminal for measurement *The measured low frequency signal is DC coupled If AC coupled is needed, please connect a capacitor in series before measurement Interfaces&Related Operations: P1 Interface (Power Supply): *VDD: Power+(7 12V) *GND: power supply- P4 Interface (TTL Input Signal): *FX: Measure low frequency input signal (1Hz ) 10MHz); Pulse accumulator input interface (Maximum measuring frequency 500K) *GND: power supply- P3 Interface (RF Input Signal): *RF: Measure RF input signal (10MHz) 4.5GHz) *GND: power supply