VICTOR VC3165 110V-220V 0.01 Hz - 2.4GHz High Resolution Professional Precision Intelligence Frequency Counter Meter
It is a frequency counter that measures signals over a wide range of 0.01 Hz to 2.4 GHz. Equipped with gate time that is continuously varying from 100ms to 10s and a maximum power consumption of only 5W.
All functions depend on a single CPU. It has a crystal-controlled temperature circuit that provides a constant compensation for temperature change, reduces the measurement errors. Its channel B (CH.B) input provides an attenuator (x1, x20) and an AC/DC coupling.
Features:
    With 3 steps function selection: work state, unit & 8-digit LED display
    Provides frequency measurement from 0.01Hz to 2.4GHz
    Provides cyclic measurement range from 0.5ms to 10s
    With attenuation of 20dB and input impedance of 1MO
    With frequency, period and equal-precision measurement
    The machine can switch from 110V to 220V (vise versa)
    Maximum power consumption is only 5W
Specifications:
    8 digit LED display
    3 step function selections
    Channel B (CH. B) input has an attenuator (x1, x20)
    AC/DC coupling for low-pass filter
    All functions depend on a single CPU
    Crystal-controlled temperature circuit
    2 Input Channels : Channel A for 0.01 Hz to 50 MHz ; Channel B for 50 MHz to 2.4 GHz 
    Channel A (0.01Hz to 50 MHz) 
        Frequency range : DC couple 0.01 Hz to 100 Hz ; AC couple 100 Hz to 50 MHz 
          Sensitivity :
            "DC" 0.01 Hz - 1 Hz = 500m Vp-p , 1 Hz - 100Hz = 80m Vrms
            "AC" 100 Hz - 50 M Hz = 80m Vrms
        Input impedance : 1 MΩ
    Channel B (50 MHz to 2.4 GHz) 
        Frequency : 50 MHz - 2.4 GHz 
          Sensitivity :
            50 MHz - 1.2 GHz = 80m Vrms 
            1.2 GHz - 2.4 GHz > 80m Vrms 
        Coupling : AC only 
        Input Impedance : 50Ω
    Resolution depends on gate time control setting
    Time base:
        Short time stability : ± 3 x 10-9 per second
        Long time stability : ± 2 x 10-8 per month
        Temperature drift coefficient : ± 1 x 10-7, 10°C - 40°C
        Line voltage variation : ± 1 x 10-7 for line voltage ± 10%
    Gate Time : Continuously variable from 100ms to 10s
    Precision : standard time error (t) x frequency (f) ±1d
    Power supply : 110V & 220V
    Power cord (Available for US, UK, Australian & European system)
    Preheat time : 20 minutes
    Operating environment : 0°C - 50°C, 10 - 90% R.H.
    Dimension : approx. 270 x 215 x 100 mm
    Weight : approx. 1.6 kg
Computer CPU controlled temperature compensation for high stability and Higher Resolution
8-digit LED display, clear reading and gate time adjustable continuously (100ms - 10s)
Two attenuator X1 ,X 20 for up to 2.4 Ghz, Frequency measurement: 0.01Hz - 2.4 GHz , it is great cou
Period measurement: 0.5µs - 10s, Input sensitivity: 30mV(rms), Power: 110V or 220V 
VICTOR VC3165 110V-220V Professional Precision Frequency Counter Meter Specification : Brand : VICTOR Model : VC3165 8 digit LED display 3 step function selections Channel B (CH. B) input has an attenuator (x1, x20) AC/DC coupling for low-pass filter All functions depend on a single CPU Crystal-controlled temperature circuit 2 Input Channels : Channel A (0.01Hz to 50 MHz) Frequency range : DC couple 0.01Hz to 100 Hz, AC couple 100Hz to 50 MHz Sensitivity : DC 0.01 Hz - 1 Hz ≤ 500m Vp-p , 1 Hz - 100Hz ≤ 80m Vrms AC 100 Hz - 50 M Hz ≤ 80m Vrms Input impedance : 1 MΩ Channel B (50 MHz to 2.4 GHz) Frequency : 50 MHz - 2.4 GHz Sensitivity : 50 MHz - 1.2 GHz ≤ 80m Vrms 1.2 GHz - 2.4 GHz 80m Vrms Coupling : AC only Input Impedance : 50 Ω Resolution depends on gate time control setting Time base : Short time stability : ± 3 x 10-9 per second Long time stability : ± 2 x 10-8 per month Temperature drift coefficient : ± 1 x 10-7, 10°C - 40°C Line voltage variation : ± 1 x 10-7 for line voltage ± 10% Gate Time : Continously variable from 100ms to 10s Precision : standard time error (t) x frequency (f) ±1d Power supply : AC 110V or 220V ±10%, (50Hz / 60Hz) ±5% Switchable between AC 110V or 220V (suitable for any countries) Power cord with AU plugs 3 pin flat Preheat time : 20 minutes Operating environment : 0°C - 50°C, 10 - 90% R.H. Package includes : 1 x VICTOR VC3165 Professional Frequency counter 1 x AU Power plug 1 x Test probe with BNC type connector 1 x English User Manual DOWNLOAD NOTE: VICTOR VC3165 is Chinese version. Details pictures : , , , ,
Package includes: 
    1 x Frequency Counter
    Power Cord (Available for US, UK, Australian & European system)
Conditions: Item used very little, comes with power cable. Some storage marks on top (please see pictures)