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Wow Flutter Meter MK-669C Keisoku

Mã sản phẩm: MK-669C |
Thương hiệu: Keisoku

Giá bán: Liên hệ

The MK-669C is intended for measurements of wow flutter in the recording/playback equipment for magnetic tapes, videotapes, discs, film, etc. in accordance with JIS, NAB, DIN (IEC/ANSI), and CCIR standards, the center frequencies used in measurements are 3kHz for RMS, NAB, and 3.15kHz for IEC (DIN/CCIR).

Yêu Cầu Giá Tốt

0984.843.683

Email: hien@ttech.vn

Thông tin sản phẩm

FEATURES

■	Wow flutter measurements possible in accordance with different standards for RMS, NAB at 3kHz and for IEC (DIN/CCIR) at 3.15kHz.
■	Wide wow flutter range, 0.001% to 3%, for accurate measurements for all classes of recording/playback equipment.
■	Measurements can be made under weighted and unweighted conditions; in addition, wow and flutter can be separately determined.
■	At IEC(DIN/CCIR) measurements, a sigma memory for three modes, 1σ, 2σ, and 3σ, enables readings at the hold condition of the meter.
■	FIN (Frequency Intermodulation) measurements in accordance with DIN45411 are possible.

		SPECIFICATIONS

Center Frequency Range
3kHz ±300Hz and 3.15kHz ±300Hz

Input Level
0.1mV to 10Vrms : Two ranges 0.1mV to 30mVrms, 5mV to 10Vrms

Input Impedance
300kΩ ±20%, unbalanced

Measurement Range

0.0015% to 3% in 6 ranges:

(However 0.1 to 30mV ranges is 0.003 to 3%)

0 to 0.01% , 0 to 0.3% , 0 to 0.03% , 0 to 1% , 0 to 0.1% , 0 to 3%

Indication Modes

Effective value for RMS, average value for NAB and peak value for IEC (DIN/CCIR).

Indication Accuracy

±5% of full scale at 4Hz on all ranges.

Frequency Characteristic
Weighted	0.2 to 200Hz for JIS, NAB and IEC (DIN/CCIR)
Wow Flutter
• Wow	0.5 to 6Hz
• Flutter	6 to 200Hz
Unweighted
• NAB	0.5 to 200Hz -3dB±1dB
• IEC(DIN/CCIR)	0.3 to 200Hz -3dB±1dB
Roll off
• NAB	-6dB/oct below 0.5Hz
• NAB	-15dB/oct above 200Hz
•IEC(DIN/CCIR)	0.3 to 200Hz, -3 ±1dB
	-6dB/oct below 0.3Hz
	-15dB/oct above 200Hz

FIM (Frequency Intermodulation) Measurement
Range	Corresponding to wow flutter measurement
Filter Characteristics
• FIM at ON	Low pass filter	-3 ±1dB at 500Hz
	Roll off	-36dB/oct above 500Hz
• 160Hz Filter at ON	High pass filter	-3 ±1dB at 100Hz
	Roll off	-12dB/oct below 100Hz

Tape Speed Indication

3 ±1kHz : 4-digit display

Measurements With Memory
Method	Sigma memory for IEC
Method	Peak-hold for JIS, NAB, IEC
Driving	Manual, repeat and automatic control with input monitor. (Manual or repeat operation when input signal is applied.)
Sigma Mode	3 points? 1σ, 2σ and 3σ
Measuring Time	2.5 sec crystal-controlled
Memory Read Time	Approx. 2 to 6 seconds, variable, with internal adjustment
Preparation Time	For automatic control with input signal : 1 to seconds, variable, with internal adjustment.

Wow Flutter Digital Indication
(Counter display during readout time at memory measurements.)
Display	3 digits, effective, at 3%, 0.3% and 0.03% ranges.
	2 1/2 digits, effective, at 1%, 0.1% and 0.01% ranges.
Accuracy	±(2% +1 digit) at full scale.
Display Time	Corresponds to memory readout time.

Recording Signal Source
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 than 0.5%

Drift Signal
Output Voltage	±1.0V ±10% per ±1% drift
Output Impedance	600Ω ±10%, unbalanced

Recorder Signal
Output Voltage	±1.0V ±10% per ±1% drift
Output Impedance	600Ω ±10%, unbalanced

Flutter Signal
Output Voltage	±1.0V ±10% per ±1% drift
Output Impedance	600Ω ±10%, unbalanced

Flutter Signal
Output Voltage	+5V (TTL level)

Frequency Counter (When used independently)
Range	10Hz to 99.99kHz in 2 ranges
Range	0.01 to 9.999kHz and 0.1 to 99.99kHz
Accuracy	±(1count + ref. Frequency accuracy)
Reference Frequency	600kHz ±1×10^-4 : crystal-controlled
Input Voltage	100mV to 10Vrms
Input Impedance	Approx. 300kΩ, unbalanced
Measurement Time	2 ranges: 0.1 and 1 sec
Display	4-digit

General Data
Operating Temp.	Range 0 to 40ºC
Power Requirements	100V, 115V, 215V or 230V 50/60Hz (voltage selector provided) Approx. 25VA
Dimensions, max	Approx. 360(W)×165(H)×290(D) mm
Weight	Approx. 6kg