Meguro MAK-6571B Automatic Distortion Meter

srh · 25th June 2010, 07:38 AM

Would anyone have a manual for this instrument that I could access?
Thanks.
Steve.

cliffyk · 15th August 2010, 02:19 AM

Hey, I just now ran across your post--I believe that is the same instrument that Marconi sold as their TF-2337A, Jung Jin also sold the same unit.

Here's a link to the Marconi operator/service manual on my server.

srh · 18th August 2010, 09:04 AM

Hi cliffyk, thanks for the link.Although the unit I have is a later version with some major differences, the method of operation is the same, so the manual has been very helpful.
Regards,
Steve.

cliffyk · 19th August 2010, 12:36 PM

I am curious as to the differences?

If you are looking for something less restricted (to the 400 and 1kHz frequencies) the HP 33x series distortions analyzers are robust and accurate--the 334A is the most desirable. They are sometimes available on eBay in good condition for under $200.

There is also a DA4084 analyzer made by Tek, that was a military version of the Tek AA5001.

It substitutes SINAD measurement for the IM distortion measurement the AA5001 does, however this makes it less desirable to many and makes it affordable in the $200 to $250 range--it's an amazingly accurate instrument, fully automatic down to 0.0005% THD.

It uses a special enclosure/power supply so don't buy one without it--it will not work in a standard Tek TM rack.

srh · 19th September 2010, 09:23 AM

Hi cliffyk, sorry for the slow reply.The major differences are: extended input range, down to 0.01v fsd; filters are passive L & C; mainly opamps in the input and meter amps. I'm a bit of a collector of analysers, I have a HP 333A, a cranky HP 339A (switches), an Australian AWA F242 (auto ranging and nulling down to 0.001%) plus Heathkit and Eico examples. That TEK is tasty but freight is the killer down to here.
Regards,
Steve.

audiohead · 19th September 2010, 06:46 PM

What is the story with HP-339 meter?
I do not like the single ended input either.

My favorite THD analyzer is Sound Tech 1700 series and I think is the best analyzer for audio.

Art

25th June 2010, 07:38 AM	#1
srh diyAudio Member Join Date: Mar 2004 Location: Whangarei. NZ	Meguro MAK-6571B Automatic Distortion Meter Would anyone have a manual for this instrument that I could access? Thanks. Steve. __________________ The older I get, the more simplicity appeals.

18th August 2010, 09:04 AM	#3
srh diyAudio Member Join Date: Mar 2004 Location: Whangarei. NZ	Hi cliffyk, thanks for the link.Although the unit I have is a later version with some major differences, the method of operation is the same, so the manual has been very helpful. Regards, Steve. __________________ The older I get, the more simplicity appeals.

19th September 2010, 09:23 AM	#5
srh diyAudio Member Join Date: Mar 2004 Location: Whangarei. NZ	Hi cliffyk, sorry for the slow reply.The major differences are: extended input range, down to 0.01v fsd; filters are passive L & C; mainly opamps in the input and meter amps. I'm a bit of a collector of analysers, I have a HP 333A, a cranky HP 339A (switches), an Australian AWA F242 (auto ranging and nulling down to 0.001%) plus Heathkit and Eico examples. That TEK is tasty but freight is the killer down to here. Regards, Steve. __________________ The older I get, the more simplicity appeals.

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15th August 2010, 02:19 AM	#2
cliffyk diyAudio Member Join Date: Nov 2009	Hey, I just now ran across your post--I believe that is the same instrument that Marconi sold as their TF-2337A, Jung Jin also sold the same unit. Here's a link to the Marconi operator/service manual on my server.

19th August 2010, 12:36 PM	#4
cliffyk diyAudio Member Join Date: Nov 2009	I am curious as to the differences? If you are looking for something less restricted (to the 400 and 1kHz frequencies) the HP 33x series distortions analyzers are robust and accurate--the 334A is the most desirable. They are sometimes available on eBay in good condition for under $200. There is also a DA4084 analyzer made by Tek, that was a military version of the Tek AA5001. It substitutes SINAD measurement for the IM distortion measurement the AA5001 does, however this makes it less desirable to many and makes it affordable in the $200 to $250 range--it's an amazingly accurate instrument, fully automatic down to 0.0005% THD. It uses a special enclosure/power supply so don't buy one without it--it will not work in a standard Tek TM rack.

19th September 2010, 06:46 PM	#6
audiohead diyAudio Member Join Date: Mar 2005 Location: Los Angeles, california	What is the story with HP-339 meter? I do not like the single ended input either. My favorite THD analyzer is Sound Tech 1700 series and I think is the best analyzer for audio. Art

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