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Texio (Formerly Kenwood TMI) FL-180A - Kenwood Wow Flutter Meter

Kenwood  Wow Flutter Meter

Texio (Formerly Kenwood TMI)

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Category : Audio / Video Equipment

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Documents:
Brochure

Overview
Features
Specifications
Calibration

   Description

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.

 
Quality Discontinued Clearance Product

 

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

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)
 

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Kenwood  Wow Flutter Meter

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