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Wow Flutter Meter MK-668G Keisoku

Mã sản phẩm: MK-668G |
Thương hiệu: Keisoku

Giá bán: Liên hệ

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).

Yêu Cầu Giá Tốt

0984.843.683

Email: hien@ttech.vn

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
Range	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