| spec | model | fc-7150u | fc-7015u | frequency measurement | display | 9 digit large green led display （overflow,gatetime,mhz,hz,khz,ns,μs ms,s,hold） | range | 0.1hz~1.5ghz | 0.1hz~100mhz | gate time | 0.01sec,0.1sec,1sec,10sec | resolution | 1nhz~10hz | accuracy | ±resolution±timebas error±1court | input characteristics | terminal | a.b,c | a | sensitivity | a,b input:20mvrms,cinput:30mvrms | impedence | a,b input:1mω<40pf,c input:50ω | max.voltage | a,input:250vrms,c input:3vrms | attenuator | a,b input:×1，×10 | slope a,b | +，- se-lectable | trogger a | preset or variable | l.p.fiter | a,b input:100khz,-3db | multi function for input a | period | range:10ms~10s,resolution:1ps~1ns accuracy:±resolution±trigger error±1count | totalize | range:5hz~30mhz,count capacity:0~999999999（max） | rpm | 6~900×100rpm | comparison function for input a,b | time interval（a→b） | range:0.1 s~10s lsd display:100ns resolution±lsd±trigger error accuracy:±reslution±1count | ratio（a/b） | range:a input:0.1hz~10mhz b input:0.1hz~10mhz lsd display:axn/b,n=1~1000 accuracy:±1count of a±b tigger error±a | time base characteristics | internal time base | -frequency:10mhz tco（tcxo:option） -aging rate:<3×10-7/month -temperature stability:<×10-6（0+500c） -lime voltage:<1×10-7for 10%variation | freequency output | frequency:10mhz,amplitude:2.5vp-p, impedance:approx.500ω | external input | frequency:10mhz,input level:20mv~5vrms, impedance:approx.500ω | general | power requirement | ac115/230v ±10%（50/60hz） | temp./dimension | 0~500c（specified at 250c）/225（w）×260（d）×80（h）mm | weight/accessories | approx.2kg/power cord,bnc cable,fuse,manual |
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張慶
