Multi-function Counter with Frequency Measurement Self-calibration Function

Overview:

• Multi-function counter series is developed and completed by using microprocessor technology. It is a kind of precision test instrument. 
• The biggest feature of this instrument is that it adopts inverse counting technology with high measurement accuracy, wide frequency measurement range, high sensitivity and fast measurement speed. 
• It has the function of PPM measurement and the preset frequency F0 can be set arbitrarily. This instrument is suitable for post and telecommunication, electronic laboratory, production line and teaching, scientific research.

Features :

• Microcontroller control
• Equal precision measurement
• Measurement speed 20 times / sec
• Cost-effective, high reliability
• A-channel with low-pass filter and 20-fold attenuation function
• 10-digit LED display (8 data digits, 2 index values)
• Conductive rubber keypad with light-touch keypad, attractive appearance

Parameter :

Name	Technical specifications
Function	Frequency measurement, weekly measurement, counting, self-calibration
Frequency measurement range	1Hz～100MHz （ A channel）
	100MHz～2.5GHz （B channel）
Period measurement range	10ns～1s
Counting capacity	108 － 1
Sensitivity	1Hz～10Hz 40mVrms
	10Hz～100MHz 20mVrms
	100MHz～3000MHz 30mVrms
Input impedance	1M Ω∥ 40pF （A channel）
	50 Ω （ B channel)
Coupling method	AC Coupling
Dynamic range	20mVrms～250Vp-p A channel )
	30mVrms～1Vrms   (B channel )
Measurement Error	± Time base accuracy ± Trigger error × Measured frequency (or period) × LSD
Crystal Stability	± 1 × 10^6
Dimension	230mm × 92mm × 230mm
Weight	1.8kg