FL-180A

WOW FLUTTER METER

Wow Flutter Meter

FL-180A

OUTLINE

The FL-180A is a wow/flutter meter capable of measuring wow and flutter of a tape recorder, VCR, analog disk turntable, etc. The wow & flutter measuring range is from 0.003% to 10%, the measurement center frequency is 3 kHz ±300 Hz (JIS), the minimum input sensitivity is 0.5 mV and the meter indication can be selected to conform to any of the JIS, NAV, CCIR and

DIN standards. In addition, a 4-digit, digital display counter and an audio compensation ON-OFF function are also provided.

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.

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WOW FLUTTER METER

FL-180A

SPECIFICATIONS

Wow/Flutter meter section

Measurement center frequency 3kHz ±300Hz (NAB/CCIR/JIS standards)

3.15kHz ±300Hz (DIN standard)

Input level range

Input impedance

0.5mV to 100mV, 5mV to 30V (two ranges)

Approx. 300k

Ω

(unbalanced)

Wow/flutter measurement range 0.003 to 10% (5mV to 30V range), 6 range

Indication method

0.01 to 10% (0.5mV to 100V range), 6 ranges

RMS (JIS)

Average value (NAB)

Peak value (CCIR/DIN)

±5% of full scale (at 4Hz) Indication accuracy

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)

Rolloff

0.3 to 200Hz ( − 3dB±1dB) (CCIR/DIN)

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

Input monitor

Frequency counter section

100V (DC ＋ ACpeak)

Level monitor lamp lights

Measurement frequency range 0.010kHz to 9.999kHz (1s gate)

0.010kHz to 55.00kHz (0.1s gate)

Input level range

Input impedance

Counter capacity

100mVrms to 30Vrms

Approx. 300k

Ω

(unbalanced)

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

Gate time

Measurement accuracy

Maximum input voltage

Input monitor

(line time base)

1s, 0.1s

±(1 digit ＋ time base accuracy)

100V (DC ＋ ACpeak)

Level monitor lamp light at an input

Output voltage

Output impedance

Power source

Dimensions

Weight

Accessories 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

Accuracy

Output voltage

Output impedance

Distortion

3kHz and 3.15kHz

±5 × 10 −5

Approx. 0.2Vrms (open circuit)

Approx. 600

Ω

(unbalanced)

1% max. (with 600

Ω termination)

Drift output (DRIFT)

Output voltage Approx. ±1V DC for each ±1% of

Output impedance frequency drift

Approx. 600

Ω

(unbalanced)

Oscilloscope output (TO SCOPE)

Output voltage

Output impedance

Approx. 3Vrms at full scale

Approx. 600

Ω

(unbalanced)

Recorder output (RECORDER)

Approx. 1V DC at full scale

Approx. 600

Ω

(unbalanced)

100/120/220/216V to 250V AC,

50/60Hz, Approx. 14W

260 (W) × 150 (H) × 305 (D) mm

Approx. 5.2kg

Instruction manual (1)

Accessory cable (CA-36) (1)

Power cord (1)

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