Should I get a Kenwood CS-6040 oscilloscope? - Page 1
Forum section: electronics / beginners

author: Morten I. Larsen
author_rank: Contributor
timestamp: July 19, 2011, 12:06:04 pm
content: Hi.I found a cheap 4 channel 150Mhz analog scope locally. (working condition)It is part of a lot with other stuff (no details):Function generatorAC-MillivoltmeterLab powersupplyWatt meterTone GeneratorTotal: USD $380.Does anyone have any opinions or suggestions? Is it a good scope?

author: ivan747
author_rank: Super Contributor
timestamp: July 19, 2011, 12:58:58 pm
content: Sounds like a good deal, for all that equipment. You can pay $380 only for the oscilloscope and it would still be a bargain if the scope is a good one.

author: FreeThinker
author_rank: Frequent Contributor
timestamp: July 19, 2011, 01:00:53 pm
content: As always Better becomes the enemy of good! There are lots of 'better' scopes out there but a 150 meg scope with four channels is very useful. However if you are just starting out a cheaper say 50 meg two channel scope may be a better buy, can be picked up cheap ($75 100) or sometimes free for 20meg etc. If you have aneedfor the tone generator or the function generator then the price is okish. Power supplies and meters are always useful so you need to asses your needs for the whole lot. Paying that sort of money for an just the (old) scope is dubious value

author: Morten I. Larsen
author_rank: Contributor
timestamp: July 19, 2011, 01:37:48 pm
content: Quote from: FreeThinker on July 19, 2011, 01:00:53 pmThank you. I was looking to get a function generator as well.Also, I should have mentioned that I live in Denmark, and most analog scopes on Ebay will cost me about $150 in shipping.

author: Mechatrommer
author_rank: Super Contributor
timestamp: July 19, 2011, 02:00:20 pm
content: get itits just look cool.

author: Unknown
author_rank: Unknown
timestamp: July 19, 2011, 08:37:27 pm
content: Quote from: ivan747 on July 19, 2011, 12:58:58 pm$380 would be quite expensive for an analog scope unless it's a high-end one (eg. Tek 246x series with 300-400MHz BW) with warranty. The other stuff is hard to judge, it may be cheap old stuff worth $5-$10 each, or they may be worth $100+ each (eg. some HP equipment).

author: EEVblog
author_rank: Unknown
timestamp: July 20, 2011, 07:14:32 am
content: The scope itself look great, (digital readout and all the mod cons) but I agree the other stuff is of unknown value unless you have model numbers to work with.Dave.

author: Morten I. Larsen
author_rank: Contributor
timestamp: July 20, 2011, 05:39:22 pm
content: Hi.Thank you for all the advice and comments.With shipping ($150) and tax (maybe $35 + 50% of the total amount) a non local analog scope is going to be expensive.A Tek 246x series with 300-400MHz BW is going to be $800+ for a *broken* one of eBay.So I decided to go have a look.And I got the whole lot for $380.The scope seems to work and basically looks brand new. I am looking forward to playing around with it.The Instruction and the service manual was included.The rest of the stuff is in excellent condition too, most of it with manuals:BK Precision 878 - Universal LCR meter.http://www.tequipment.net/BK878.htmlBK Precision 830 - Autoranging Capacitance MeterOld but in great condition.http://www.tequipment.net/BK830.htmlBK Precision 1686 DC Power Supply (3-14 V, 12 A)Looks like it just came off the assembly line.http://cgi.ebay.com/BK-Precision-1686-3-14-V-12-Amp-DC-Power-Supply-/110616908297Tandar TF1000 - 100Mhz Universal counter/timer.Could not find anything on this.TRIO / Kenwood VT-155 Automatic AC Voltmeterhttp://cgi.ebay.ph/TRIO-VT-155-Automatic-AC-Voltmeter-/370328888292Siemens miliOhm meter (looks preety old)Or something like that? Not sure.It has an -15 to +15 analog gauge facing dial 400-5000 milliOhm.I think you are supposed zero out the first gauge and then take a readingfrom the dial.Yew Type 2504 Digital AC meterhttp://sales.exphil.com/2504.aspxTrio/Kenwood FL-180A Wow Flutter MeterI don't think I have any use for this, but who knows.http://www.tequipment.net/KenwoodFL-180A.htmlBang & Olufsen RT12 Power Supply - (Variable AC Transformer 0-120%)Some guys description:http://www.audiokarma.org/forums/showthread.php?t=176524I am sure I will learn a lot from trying to figure out how to use some of this stuff.

author: Morten I. Larsen
author_rank: Contributor
timestamp: July 20, 2011, 09:30:34 pm
content: A photo of the scope.

author: Unknown
author_rank: Unknown
timestamp: July 20, 2011, 11:42:24 pm
content: Wow what a steal !!You sure are a lucky guy.The Siemens thingy sounds like a null detector to me. If so take good care of it.

author: Unknown
author_rank: Unknown
timestamp: July 21, 2011, 12:05:15 am
content: Larsen, as made clear by the previous posts, this deal is a bargain considering the likely price for the individual units. If I was to give you a choice, I would say you can have the scope for $600 or all the units you listed for $380. The choice is yours and you seem to have made up your mind already. If you feel you wont need something, nothing stops you from reselling it.There is one thing on your list that surprised me a bit, the RT12 power supply. Is this Bang & Olufsen the same as this Bang & Olufsen?http://www.bang-olufsen.com/The website of the linked B&O doesnt not provide a lot of information about the company's history, whereas wikipedia does...The linked B&O does not appear to have been involved in designing/manufacturing such equipment as lab power supplies. Does anyone know anything about this? Larsen, I would find a picture of that psu very interesting (could not find any online). Could you post one?

author: elCap
author_rank: Regular Contributor
timestamp: July 21, 2011, 01:09:53 am
content: Very nice set of gear for a very good price. Looks to me it's from some sort of audio lab?Quote from: Alex on July 21, 2011, 12:05:15 amWhen I went to university (in Sweden, close to B&O homeland Denmark) they had some high quality B&O power supplies. I think they were blue and white, all metal and quite compact, but I can't remember any spec of them. I would love to have one of those now!

author: ejeffrey
author_rank: Super Contributor
timestamp: July 21, 2011, 08:16:22 am
content: The link he posted is not describing a 'typical' lab power supply (e.g, a regulated DC supply), but a variac -- a variable auto-transformer. to This is commonly used to provide adjustment to high power resistive loads like heaters, or to slightly buck or boost the line voltage. Audio guys and especially tube amplifier guys love them because a lot of old audio gear is designed for slightly lower mains voltage than is common today.

author: FreeThinker
author_rank: Frequent Contributor
timestamp: July 21, 2011, 01:20:55 pm
content: BK Precision 1686 DC Power Supply (3-14 V, 12 A)Looks like it just came off the assembly line.http://cgi.ebay.com/BK-Precision-1686-3-14-V-12-Amp-DC-Power-Supply-/110616908297Looks like a rebadged manson power supply. solid and reliable. Nice. Quite an old design although manson have recently re tooled the case (to old tooling was beyond repair apparently) and still very popular.

author: w2aew
author_rank: Super Contributor
timestamp: July 21, 2011, 04:08:58 pm
content: Looks like you got a great deal. If you are interested in really learning about how to get the most out of the scope, check out the Scope Tutorial videos that are "sticky-ed" to the top of this forum category. There's a link to a 2+hr long comprehensive class on analog scopes, as well as links to other shorter, specific topic videos (like vertical coupling controls, triggering controls, etc.).

author: Morten I. Larsen
author_rank: Contributor
timestamp: July 21, 2011, 06:25:15 pm
content: Quote from: Alex on July 21, 2011, 12:05:15 amHi Alex. Here is a photo.

author: Morten I. Larsen
author_rank: Contributor
timestamp: July 21, 2011, 06:26:07 pm
content: Quote from: w2aew on July 21, 2011, 04:08:58 pmThank you w2aew. I will have a look.

author: cs.dk
author_rank: Unknown
timestamp: July 22, 2011, 09:03:53 am
content: Quote from: Alex on July 21, 2011, 12:05:15 amFunny that you mention that - I have B&O oscilloscope probes; I thought audio/tv was there only business.The probes are marked B&O Nederland b.v. - Measuring Instruments Division, although it is a Danish company.

author: EEVblog
author_rank: Unknown
timestamp: July 22, 2011, 12:28:42 pm
content: Great deal I think!Have fun with all that gear.If you are lucky you might be able to sell the ones you don't think you'll need and maybe even get your money back?Dave.

author: Unknown
author_rank: Unknown
timestamp: July 22, 2011, 02:06:39 pm
content: Very interesting. Thanks for the pic Larsen.

author: PSW
author_rank: Newbie
timestamp: January 07, 2013, 01:15:58 am
content: images of the B&O RT12 power supply:http://techmind.dk/elektronik/bo-power-supply-rt12data sheet of Rt12 (but in Danish)http://www.peel.dk/B&O/B&O%20Power%20Supply%20RT12.pdfI was so lucky that I got one that was defective from my old school, but after I put the new fuse in it, it worked.they are Intended for service workshops so they can work safely insulated on the mains,and the 24 AC output is Intended for Soldering Iron's max 150w. O0

author: olivil
author_rank: Newbie
timestamp: January 07, 2013, 03:47:33 am
content: What a nice haul for 380$! The scope looks nice and so does all the other stuff. Shipping this stuff would have cost at least 100$ so you got a good deal from buying locally.Have fun!