Frequency Counter

Model Number

FC-7150U / 7015U / 7150 / 7015

• 9 Digit displaywith 0.01mHz resolution in 1sec
• RS-232C serial interface for communication with computer(Option)
• High sensitivity external reference input function(≥ 20mVrms)
• Microprocessor controlled
• Reciprocal technique for high resolution at low counting frequencies
• Self Check function executed to perform an automatic self diagnosis of various counter function
• Push-scanning for selecting function and gate time
• Low - pass filter(100kHz, -3dB)installed for removing noise signal in low frequency measuring
• AC/DC coupling function(Selectable x1/x10 attenuator)
• Data-Hold Function

FREQUENCY  MEASUREMENT	Display	9 digit large green LED display  (Overflow, gate time, mHz, Hz, kHz, MHz, ns, μs, s, hold)
	Range	0.1Hz ~ 1.5GHz
	Gate time	0.01s, 0.1s, 1s, 10s
	Resolution	1nH ~ 10Hz
	Accuracy	± resolution ± time base ± 1 count
INPUT  CHARACTERISTICS	Terminal	A, B, C
	Sensitivity	20mVrms A, B input / 30mVrms C input
	Impedance	1MΩ < 40pF A, B input / 50Ω C input
	Max. voltage	250Vrms A, B input / 3Vrms C input
	Attenuator	X 1, X 10 A, B input
	Slope A, B	+ or selectable
	Trigger A	preset or variable
	Low pass filter	100kHz(-3dB) A, B input
MULTI  FUNCTION FOR  INPUT A	Period	10ms ~ 10s range with 1ps ~ 1ns resolution / ± resolution ± trigger error ± 1 count accuracy
	Totalize	5Hz ~ 30MHz range / 0 ~ 999999999(Max)
	RPM	6 ~ 900 X 106 RPM
COMPARISON  FUNCTION FOR  INPUT A, B	Time interval (A → B)	1μs ~10s range / 100ns LSD display  / ± LSD ± trigger error resolution  / accuracy : ± LSD ± trigger error ± time base error X time interval / 1, 10, 100, 1000 multiplier
	Ratio (A/B)	0.1Hz ~ 10MHz A input range, 0.1Hz ~ 10MHz B input range  / ± LSD ± (trigger error X frequency A)/N resolution  / accuracy : ± 1count of A ± B trigger error ± frequency A
TIME BASE  CHARACTERISTIC	Internal time base	10MHz TCO frequency, 3 X 10-7/ month, under 5 X 10-6 (0 + 50°C) temperature stability, under 1 X 10-7 for 10% variation line voltage
	Frequency output	10MHz frequency / 2.5Vp-p amplitude / 500Ω impedance
	External input	10MHz frequency / 20mVrms ~ 5Vrms input level / 500Ω impedance
GENERAL	Operating environments	0°C ~ 50°C
	Range for guaranteed	25°C± 5°C
	Power requirement	AC 115 / 230V ± 10%, 50/60Hz
	Dimension	255mm(W) X 80mm(H) X 260mm(D)
	Accessories	power cord, fuse, operation manual, BNC cable
	Factory optional selection	RS-232C interface / TCXO