This system is a CPLD microcontroller for signal frequency and period, time interval and the duty ratio of digital frequency measurement meter based on the system by the AGC (automatic gain control) circuit, amplifier circuit, high speed broadband comparison circuit to achieve effective value of 10mV/ 100MHz and the frequency of processing components, including AGC circuit control signal after amplification is consistent within a certain range of amplitude automatic gain circuit compares the former circuit output signal is converted into CPLD, using precision frequency measurement principle, realizes high accuracy time gate 1S. SCM communication processing data and display, data show that the system precision to play a part of the requirements.

Filename	Size	Update
方案二	0	2016-12-01
方案二\Debug	0	2016-12-10
方案二\Debug\Exe	0	2016-12-01
方案二\Debug\Exe\shuzi.d43	50667	2016-12-01
方案二\Debug\List	0	2016-11-14
方案二\Debug\Obj	0	2016-12-01
方案二\Debug\Obj\delay.r43	6577	2016-12-01
方案二\Debug\Obj\FrequencyCounter.r43	40875	2016-12-01
方案二\Debug\Obj\key.r43	17057	2016-12-01
方案二\Debug\Obj\lcd.r43	19719	2016-12-01
方案二\Debug\Obj\main.r43	94952	2016-12-01
方案二\Debug\Obj\shuzi.pbd	379	2016-12-01
方案二\delay.c	1065	2014-07-16
方案二\delay.h	314	2015-08-08
方案二\FONT.H	16155	2010-06-21
方案二\FrequencyCounter.c	6162	2016-12-14
方案二\FrequencyCounter.h	318	2015-08-31
方案二\Graphy.h	10838	2016-03-16
方案二\GUI.h	143889	2015-08-15
方案二\Init.h	795	2014-08-01
方案二\key.c	2269	2016-11-14
方案二\key.h	332	2014-06-10
方案二\lcd.c	4700	2016-11-28
方案二\lcd.h	3057	2016-12-01
方案二\MacroAndConst.h	594	2014-04-08
方案二\main.c	2083	2016-12-01
方案二\path.txt	0	2016-12-01
方案二\settings	0	2016-12-10
方案二\settings\shuzi.cspy.bat	1067	2016-12-01
方案二\settings\shuzi.dbgdt	4902	2016-12-01
方案二\settings\shuzi.dni	1253	2016-12-01
方案二\settings\zs.wsdt	3910	2016-12-01
方案二\shuzi.dep	6011	2016-12-01
方案二\shuzi.ewd	20123	2016-11-16
方案二\shuzi.ewp	50502	2016-12-01
方案二\zs.eww	159	2016-11-14

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