Bench top, portable, 10 digit LED, dual channel.
This frequency counter with a wide range of functions including period measurement, frequency ratio, duty cycle, pulse width measurement and event counting. 10 digit LED display. Incorporates a USB interface which allows remote control via computer. Operation from built-in rechargeable batteries, with 'Lo Battery' indicator. Input impedance, 1Mohm/25pF and 50 ohms._x000D_

Technical Specification_x000D_

• Channel A :_x000D_
• Input Coupling : AC or DC_x000D_
• Input Impedance : 1MW/25 pF (DC or AC coupled or 50 ohm (ac coupled only)_x000D
• Frequency : 0.001Hz->125MHz_x000D_
• Sensitivity : Sine wave 15mVrms 30Hz-100MHz, 25mV to 125MHz_x000D__x000D
• Channel B :_x000D
• Input Impedance :  50 ohm_x000D
• Frequency : <80MHz->3GHz_x000D
• Sensitivity : Sine wave 12mVrms, 80MHz to 2GHz, 25mV to 2.5GHz, 50mVrms to 3GHz_x000D__x000D
• Frequency : x000D
• A Input Range : 0.001Hz (DC coupled) to>125MHz_x000D
• B Input Range : 80MHz to >3000MHz_x000D
• Resolution : up to 10 digits or 0.001Hz_x000D
• Period Measurement : _x000D_
• A Input Range : 8ns to 100s (DC coupled)_x000D
• B Input Range : 333ps to 12.5ns_x000D
• Resolution : up to 10 digits_x000D
• Pulse Width Mode (Input A only)  : _x000D
• Functions : Width high, width low, ratio H:L (high time to low time) and duty cycle_x000D
• Pulse Width Range : 40ns to 1000s_x000D
• Averaging : Automatic within measurement time selected up to 50 pulses_x000D
• Resolution : 20ns for one pulse; up to 1ns or 10 digits with multiple pulse averaging 0.01% for Ratio H:L and Duty Cycle_x000D
• Total Count (Input A only) :  _x000D
• Count Range : 1 to 9,999,999,999_x000D
• Minimum Width :  8ns_x000D
• Time base :  _x000D
• Measurement Clock : 50MHz_x000D
• Internal Reference : 10MHz TCXO with electronic calibration adjustment (>+/- 8ppm)_x000D_
• Initial Error : <±0.2ppm at 25ºC_x000D
• Ageing Rate : <±1ppm/year_x000D
• General :  _x000D
• Power Requirements : Fixed internal rechargeable batteries. Supplied with universal voltage external mains adapter, with interchangeable power connectors_x000
• Temperature range : -20º to 60ºC_x000D
• Dimensions : 260 x 88 x 235mm w x h x d_x000D
• Weight : 950g (plus 170g AC adapter)