FL-180A

Wow Flutter Meter FL-180A

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Outline

The FL-180A is a wow/flutter meter capable of measuring wow and flutter of a tape recorder

Features

●0.5 mV Input Sensitivity The FL-180A can measure inputs as low as 0.5 mV, enabling it to directly measure wow & flutter of such low-level output voltages as those from tape playback heads and phono cartridges. ●Measuring Range from 0.003% to 10% The capability of measuring wow & flutter between 0.003% and 10% makes the FL-180A usable in a wide range, from low wow & flutter of high-class record /playback systems to the high wow & flutter of abnormal rotations. ●Other Features ●In addition to the 3 kHz measurement center frequency, measurement is also possible at a center frequency of 3.15 kHz, enabling measurements conforming to DIN standards. ●The meter indication method can be selected as rms value (JIS), average value (NAB) or peak value (CCIR/DIN), enabling direct reading for any of these standards. ●In addition to wow & flutter measurements with weighted and non-weighted characteristics, the FL-180A can also measure wow and flutter separately. ●Highly stable crystal oscillator circuitry is built in for use as 3 kHz and 3.15 kHz recording signal sources to facilitate testing of record /playback systems. ●Rotation speeds can be displayed digitally. ●A 4-digit frequency counter is built in. ●An operational monitoring lamp eliminates the need of input voltage and input frequency setting operations. ●Outputs of various voltages for the connection of an oscilloscope or pen recorder, etc. ●SPECIFICATIONS SPECIFICATIONS Wow/Flutter meter section Measurement center frequency 3kHz ±300Hz (NAB/CCIR/JIS standards) 3.15kHz ±300Hz (DIN standard) Input level range 0.5mV to 100mV, 5mV to 30V (two ranges) Input impedance Approx. 300kΩ (unbalanced) Wow/flutter measurement range 0.003 to 10% (5mV to 30V range), 6 range 0.01 to 10% (0.5mV to 100V range), 6 ranges Indication method RMS (JIS) Average value (NAB) Peak value (CCIR/DIN) Indication accuracy  ±5% of full scale (at 4Hz) Frequency characteristics   Weighted characteristics In accordance with standards of NAB, CCIR/DIN, JIS (0.2 to 200Hz) WOW characteristics 0.5 to 6Hz (-3dB±1dB) (NAB/JIS) 0.3 to 6Hz (-3dB±1dB) (CCIR/DIN) Flutter characteristics 6 to 200Hz (-3dB±1dB) Unweighted characteristics 0.5 to 200Hz (-3dB±1dB) (NAB/JIS) 0.3 to 200Hz (-3dB±1dB) (CCIR/DIN) Rolloff Below 0.5Hz: -6dB/OCT min. (NAB/ JIS) Above 200Hz: -15dB/OCT min. (NAB/ JIS) Below 0.3Hz: -6dB/OCT min. (CCIR/DIN) Above 200Hz: -15dB/OCT min. (CCIR/DIN) Maximum input voltage 100V (DC ACpeak) Input monitor Level monitor lamp lights Frequency counter section Measurement frequency range 0.010kHz to 9.999kHz (1s gate) 0.010kHz to 55.00kHz (0.1s gate) Input level range 100mVrms to 30Vrms Input impedance Approx. 300kΩ (unbalanced) Counter capacity 4 digit (decimal), storage-type LED display Time base Time base frequency 10.080MHz (internal quartz oscillator) or line frequency (50/60Hz) Time base frequency accuracy ±5×10-5 (0 to 40℃) (internal quartz oscillator) or line frequency accuracy (line time base) Gate time 1s, 0.1s Measurement accuracy ±(1 digit time base accuracy) Maximum input voltage 100V (DC ACpeak) Input monitor Level monitor lamp light at an input voltage of 100mV min. (lamp flashes at 9.999kHz or greater for a 1s gate time, and at above 55.00kHz for a 0.1s gate time, to indicate out-of -range condition) Outputs Recording-signal output   Signal frequencies 3kHz and 3.15kHz Accuracy ±5×10-5 Output voltage Approx. 0.2Vrms (open circuit) Output impedance Approx. 600Ω (unbalanced) Distortion 1% max. (with 600Ω termination) Drift output (DRIFT)   Output voltage Approx. ±1V DC for each ±1% of frequency drift Output impedance Approx. 600Ω (unbalanced) Oscilloscope output (TO SCOPE)   Output voltage Approx. 3Vrms at full scale Output impedance  Approx.600Ω (unbalanced) Recorder output (RECORDER)   Output voltage Approx. 1V DC at full scale Output impedance Approx. 600Ω (unbalanced) Others Power source 100/120/220/216V to 250V AC, 50/60Hz, Approx. 14W Dimensions 260 (W)×150 (H)×305 (D) mm Weight Approx. 5.2kg Accessories Instruction manual (1) Accessory cable (CA-36) (1) Power cord (1)