MAK-6630 Audio Analyzer / MEGURO ELECTRONICS CORPORATION

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MAK-6630 Audio Analyzer

The MAK-6630 is an Audio Analyzer which incorporates the measurement functions of distortion, relative Value, AC/DC level and frequency in a single instrument, and also is equipped with a low distortion audio signal source (DDS method). This unit is designed for allowing a multifunction, high-performance and high speed measurements of various characteristics of stereo amplifiers, AM-FM receivers and other electronics appliances.
When this unit is combined with MEGURO's standard signal generators, wow & flutter meter, low distortion oscillator and etc., an automatic measuring system can also created. The fully microprocessor-controlled operations and standard interfaces (GP-IB, RS-232C, EXT.I/O) make this unit a measuring instrument suitable for use with various new media, as well as improving the ease of operation and efficiency of work.

		FEATURES

■	Owing to the adoption of the DDS method, the frequency changing speed is very fast, from 10Hz to 110kHz, and the audio signal is very high purity (-100dB at 80kHz LPF).
■	In spite of one measuring system, 2-channel measurement can be capable due to the L/R signal selector circuit, and also UNBAL/BAL measurements are possible for BTL amplifiers.
■	High-pass filter --- 100Hz, 200Hz, 400Hz Low-pass filter --- 30kHz, 80kHz Pre-Low-pass filter --- 15kHz, 20kHz Weighting network (PSOPHO) --- IEC-AUDIO, CCIR/ARM, DIN-AUDIO standards, In addition to the above filters, a user-provided filter can be inserted by connecting it to rear-panel Input/Output connectors (EXT. FILTER).
■	The reciprocal type high speed counter is equipped and the range is from 10Hz to 110kHz with ±5×10^-5
■	The measuring range is from 0.03160mV to 100.0V in 7ranges and an accuracy is within ±0.4dB at 1kHz. The frequency range is from 10Hz to 110kHz.
■	The mesuring range is 30mV to 100V fs and an accuracy is ±0.5% of full scale.
■	This unit is capable of measuring distortion factors of the fundamental signal over the frequency from 10Hz to 110khz, and a high sensitivity 1.0mVrms range is provided for the dynamic range measurement of digital audio equipments.
■	For AC level measurements, it is possible to display input levels as the relative value referred to a reference value.
■	All operation functions provided on the front panel can be programmed up to 100 steps, and also the limit (GO/No-Go) judgment and memory auto-sequence functions are equipped.
■	This unit is provided with GP-IB, RS-232C and EXT.I/O external control interfaces as its standard equipment so that it can be converted into an automatic measuring system.

		SPECIFICATIONS

Oscillator
Frequencu range	10Hz to 110kHz (4 ranges)
Setting resolution	0.1Hz (10Hz to 200Hz)
	1Hz (201Hz to 2kHz)
	10Hz (2.01kHz to 20kHz)
	100Hz (20.01kHz to 110kHz)
Setting accuracy	±2% of setting
Output channel	2-output channel
Output range	20dBV (OPEN)
	14dBV (600Ω load end)
	+20 to -79.9dBV (OPEN)
Resolution	0.1 dB
Accuracy	±0.4 dB (at 1 kHz)
Output impedance	600Ω
Frequency response	+20dBV to -70dBV (OPEN)
	±0.4dB 20Hz to 20kHz (at 1 kHz)
	±0.8dB 10Hz to 110kHz (at 1 kHz)
Distortion	3.16Vrms (typ.)
	Less than -100dB(10Hz to 15kHz, 80kHz BW)
	Less than -90dB(15.1kHz to 20kHz, 80kHz BW)
	Less than -80dB(10Hz to 110kHz, 500kHz BW)

Measurement
Frequency measurement
Frequency range	10Hz to 110kHz (AUTO/MANU)
Display/Resolution	5 digits display for ≥ 100Hz 0.01Hz for < 100Hz
Accuracy	±5×10^-5 ±1 digit
Input range	25mV (rms) to 100.0V (rms)

AC Level measurement

Measurement channel

2-CH (Switchable)

Input method

Unbalance and Balanced (selectable)

Separation for 2 channels

Better than 80dBb (at 1kHz)

Input impedance

100kΩ or more

Frequency range

10Hz to 110kHz

Measurement range

0.1mV to100V in 7 range(AUTO/MANU)

Unit (m) V	Unit dBV	Unit dBm
100.0V	40.0dBV	42.2dBm
31.6V	30.0dBV	32.2dBm
3.16V	10.0dBV	12.2dBm
316.0mV	-10.0dBV	-7.8dBm
31.6mV	-30.0dBV	-27.8dBm
3.160mV	-50.0dBV	-47.8dBm
0.316mV	-70.0dBV	-67.8dBm

Effective measuring range

0.0316mV (-90dB) to 100V (40dB)

Accuracy

Within±0.4dB for 40dB to -70dB (at 1kHz)

Frequency response

40dBV to -70dBV

Within±0.8dB for 10Hz to 110kHz at 1kHz ref.
Within±0.4dB for 20Hz to 80kHz at 1kHz ref.

Measuring resolution

0.1% of full scale value for each range

DC Level Measurement
Measurement channel	1-CH
Input impedance	1MΩ or more
Range	300mV FS to 100.0V FS(4 ranges)
Accuracy	±0.5% of full scale value
Measurement resolution	0.1% of full scale value

Distortion Measurement

Fundamental frequency range

10Hz to 110kHz(AUTO/MANU)

Measurement resolution

0.1% of full scale value for each range

Input range

7 ranges

Unit (m) V	Unit dBV	Unit dBm
100.0V	40.0dBV	42.2dBm
31.6V	30.0dBV	32.2dBm
10.0V	20.0dBV	22.2dBm
3.16V	10dBV	12.2dBm
1.0V	0dBV	2.2dBm
0.316V	-10.0dBV	-7.8dBm
0.1V	-20.0dBV	-17.8dBm

Measurement range display

7 ranges

Unit(%)	Unit(dBV)
31.6%	-10dB
10.0%	-20dB
3.16%	-30dB
1.0%	-40dB
0.316%	-50dB
0.1%	-60dB
0.0316	-70dB

Residual distortion

3.16Vrms(typ.)

-100 dB Less than (10 Hz to 15 kHz 80 kHz BW)
-90 dB Less than (15.1 kHz to 20 kHz 80 kHz BW)
-80 dB Less than (10 Hz to 110 kHz 500 kHz BW)

Input level range

0.1V(rms) to 100V(rms)

Accuracy

Within±1dB for 20Hz to 20kHz

Accuracy at 2nd harmonic

Within±3dB for 10Hz to 110kHz

Amplifie for digital audio

60dB

Other
Filters
• HPF	100 Hz, 200 Hz, 400 Hz
• LPF	30 kHz, 80 kHz
• PRE LPF	15 kHz, 20 kHz
• PSOPHO	CCIR / ARM, DIN-AUDIO, IEC-A
• EXTERNAL	EXT
Memory function	100points(Memory address 00 to 99)
Interface function	GP-IB, RS-232C, EXT.I/O

General Data
Operating temperature range	0ºC to +50ºC
Guarantee temperature range	+15ºC to +35ºC
Power requirement	AC 90V to AC 132V/AC 198V to 250V
Dimmensions	Approx. 426 (W) × 100 (H) × 460 (D) mm
Weight	Approx. 12kg

*	Specifications are subject to change without notice.