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Wow Flutter Meter MK-668G Keisoku

Mã sản phẩm: MK-668G
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Hãng SX: Keisoku
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Đặt hàng
The MK-668G is designed for measuring the wow flutter in recording/playback equipment such as recorders for sound and video tapes, discs, and film.
Measurements can be made under standards presently in effect, namely, at 3kHz for the RMS, NAB and at 3.15kHz for IEC (DIN, CCIR).

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Thông tin sản phẩm

FEATURES

Wide measurable wow flutter range 0.0015% for testing the highest grade to general-purpose recording and playback equipment.
Accurate measurement under different standards: Effective value for RMS, average value for NAB, and peak-value for IEC (DIN, CCIR).
Wow flutter measurements under standard weighted and specified unweighted conditions; in addition, wow and flutter values can be separately determined.
Monitor lamp indicates the proper input voltage level for wow flutter and tape speed measurements.
Stable and accurate signal output at 3kHz and 3.15kHz (crystal-controlled) available for recording a test tape, disc, etc.
FIM measurements possible in accordance with DIN45411 specification.

SPECIFICATIONS

 Input Frequencies
3kHz ±300Hz, for RMS, NAB.
3.15kHz ±300Hz, for IEC (DIN, CCIR).

 Input Voltage Range

Two range: 0.1 to 30mVrms, and 5mV to 10Vrms


 Input Impedance
Approx. 300kΩ unbalanced

 Wow Flutter Range

0.0015% to 3% in six ranges

0.003% to 3% at 0.1 to 30mV input

0.01%, 0.03%, 0.1%, 0.3%, 1% and 3% at full scale


 Meter Indication
Peak value for IEC (DIN, CCIR)
Average value for NAB

Effective value for RMS


 Indication Accuracy
±5% of full scale at 4Hz

 Frequency Characteristics
Weighted 0.2 to 200Hz in accordance with standards for IEC (DIN, CCIR)
and NAB.
Wow Flutter separation
• Wow 0.5Hz to 6Hz
• Flutter 6Hz to 200Hz
Unweighted
• NAB 0.5 to 200Hz -3dB±1dB
• IEC(DIN, CCIR) 0.3 to 200Hz -3dB±1dB
Unweighted
Standards Response Roll off
IEC (DIN, CCIR) 0.3 to 200Hz
-3dB±1dB
<-6dB/oct below 0.3Hz
<-15dB/oct above 200Hz
NAB 0.5 to 200Hz
-3dB±1dB
<-6dB/oct below 0.5Hz
<-15dB/oct above 200Hz

 FIM Measurement
Range Corresponding to Wow Flutter
Filter Characteristics
• FIM : ON
L.P.F. 500Hz -3dB±1dB
Roll off above 500Hz <-36dB/oct
• 160HzFIL. : ON
H.P.F. 100Hz -3dB±1dB
Roll off above 100Hz <-12dB/oct

 Tape Speed Range
3kHz ±1kHz : 4-digit indication

 Internal Recording signal
Frequency 3kHz and 3.15kHz ±3×10-5 (crystal-controlled)
Output Voltage Approx. 0.2Vrms at open circuit
Output Impedance Approx. 600Ω unbalanced
Distortion Less then 0.5%

 Drift
Output voltage ±1V per ±10% drift
Output impedance 600Ω ±10% unbalanced

 To Recorder
Output voltage DC 1V±5% at full scale
Output impedance 600Ω ±10% unbalanced

 Flutter
Output voltage 1Vrms±5% at full scale
Output impedance 600Ω ±10% unbalanced

 Frequency Counter (at independent operation)
Range 10Hz to 99.99kHz in two ranges
0.01 to 9.999kHz, 0.1 to 99.99kHz
Accuracy ±(1 count+reference frequency accuracy)
Reference Frequency 600kHz ±1×10-4 (0 to 40ºC)
Input Impedance Approx. 300kΩ unbalanced
Gate Time 0.1 sec, 1 sec in 2 ranges
Indication 4-digit display

 General Data
Power Requirements

AC 100V, 115V, 215V, or 230V±10%
50/60Hz;
approx. 15VA

Dimensions, overall Approx. 360(W)×165(H)×290(D)mm
Weight Approx. 5kg
Accessory, furnished Input/Output cord : 1ea

* Specifications are subject to change without notice.

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