Ice-Tea's Score Thread - Page 1
Forum section: electronics / general

author: Ice-Tea
author_rank: Super Contributor
timestamp: December 18, 2019, 07:34:44 am
content: As some of you know, what once started out as me trying to get some equipment for the lab, then grew into me making a buck on the side is still growing: I buy T&M gear. Lots of it. I've been spamming the TEA thread and Equipment Score thread with it but I figured that rather than poluting those threads any further I'd get my own. I've put it in the "Buy/Sell/Wanted" because, well, most of the stuff is for sale. That said, if mods (or even worse: Dave) is not happy with this, let me know.Now, I won't post everything I get and put up for sale in detail, but I figured I'd highlight some of the quircky or unusual stuff for everyone's entertainment. Should at some point one of you be interested in any of it: it always pays to contact me outside eBay. It's always 10 or more % cheaper. In addition, the prices on eBay include VAT which means EU companies get another 21% discount. Customers outside the EU get the 21% discount as well, but that's often offset by higher shipping costs (and you may have to pay import duties).That said: unit number one!B&K Precision 2658Handheld, battery powered 8.5Ghz SA. Weighs less than 2kg!I'm ordering a new power brick and battery pack for it. Otherwise in pretty decent shape except for the discoloration in the middle of the screen. That's a real bummer. Also, not the "A" version, so no color sscreen for Ice-Tea.Something you don't see very often (at least: I don't see it often..): switchable 50/75 ohm ranges!For sale?noGone.

author: Ice-Tea
author_rank: Super Contributor
timestamp: December 18, 2019, 08:11:10 am
content: Keithley 707They don't get much bigger than this. If you think it's big, it's probably bigger in RL. With room for a pony.But whatisit? Well, the secret is in the plugin cards:They allow a switchable matrix connection between DUT and measurement devices or signal sources or... Pretty much like this:This unit has 3 dual 12x4 cards. Pretty niffy if you need to build a automated test setup. If you don't, you can still brag about the biggest tool in the shed and get all the ladies. But not really.For sale?YES!

author: PlainName
author_rank: Super Contributor
timestamp: December 18, 2019, 09:29:59 am
content: I'm a sucker for test gear, but I can't be arsed to try and scroll those pictures left and right to see what they are. Perhaps something viewable without a 4K display might attract the kind of olde pharte that would grab these?

author: Ice-Tea
author_rank: Super Contributor
timestamp: December 18, 2019, 09:43:37 am
content: Quote from: Mechatrommer on December 18, 2019, 08:17:31 amYeah, problem is that prices change. If an item doesn't sell I'll drop the price after some time. Don't feel like having to update half the internet if I drop a price. Which is why I mentioned the eBay fee in the first post. Check the price on eBay, substract 10% for starters (and an additional 21% for companies). If it's close enough, PM me with a sob story to get moreQuoteEh? I didn't so much leave but it's a full time job to keep up with that thread. And I have two of those alreadyQuote from: dunkemhigh on December 18, 2019, 09:29:59 amEh, sorry about that. Rescaled the first one, not the second one. I'll make sure to do better for the following units. The first one should be OK on a 1920*1080 monitor?

author: Zucca
author_rank: Unknown
timestamp: December 18, 2019, 09:44:21 am
content: Quote from: dunkemhigh on December 18, 2019, 09:29:59 amA quick solution would be the width command:QuoteIt can be used also for the attachment.PS: Wow I did not expect so many complains!

author: Ice-Tea
author_rank: Super Contributor
timestamp: December 18, 2019, 09:45:53 am
content: Quote from: Zucca on December 18, 2019, 09:44:21 amThat is cool! Thanks!

author: PlainName
author_rank: Super Contributor
timestamp: December 18, 2019, 09:55:44 am
content: QuoteI actually have a 4K monitor but the browser is max 1200 wide. Things should scale to the window, not the hardware, although I accept you don't have that kind of choice when posting pix on a forum

author: Ice-Tea
author_rank: Super Contributor
timestamp: December 18, 2019, 10:15:45 am
content: Actually, I post most stuff on the German site. Stuff that makes sense to ship to the US should also show up on the .com site (sometimes with 'ask for shipping') but truth is I don't often enable it for 'Asia' in general. Too many unknowns. Best to browse through the german site, PM me if shipping to your country isn't listed.

author: Ice-Tea
author_rank: Super Contributor
timestamp: December 18, 2019, 01:39:32 pm
content: Keithley 213Another one for ATE setups. A four channel Power Supply. Kinda. All channels supplying a whopping 10mA.Seriously, though, mostly to be used for biasing purposes. Complemented by 8 digital IOs to enable/monitor the DUT.LeafletI actually have several of those. Perhaps I should start thinking more like a salesman and less like an engineer and not post the pictures of the first one I verified but rather the best looking oneFor sale?NO!Ran out

author: Ice-Tea
author_rank: Super Contributor
timestamp: December 18, 2019, 02:01:30 pm
content: Quote from: Shock on December 18, 2019, 01:58:09 pmYou misspelled "chill".

author: Ice-Tea
author_rank: Super Contributor
timestamp: December 18, 2019, 02:53:40 pm
content: Quote from: Shock on December 18, 2019, 02:14:36 pmJust exactly *how* would that be considerate to sellers? I wanted to have a nice thread where I could post interesting stuff once it came in, provide some background, share some impressions, maybe pop one open from time to time etc etc. I already explained why it's difficult to list prices here.

author: Ice-Tea
author_rank: Super Contributor
timestamp: January 07, 2020, 03:20:40 pm
content: Not so quircky or special, just a 300W Chroma load.Leaflet.Pretty good units but two things to be aware of:- This unit is very much a contender for the "Most Dick Place To Put A Range Switch"-Award.Which is why I'm posting this: if this saves one of you from booting it up without checking I get a cookie.- The transparant cover has a coating that is not very UV resistant and will peel. Had it in the past with other Croma units of this era, two out of three have it now. If you ever decide to buy one: beware.For sale?YES!

author: Ice-Tea
author_rank: Super Contributor
timestamp: January 15, 2020, 08:57:51 am
content: Hmm...

author: nctnico
author_rank: Super Contributor
timestamp: January 15, 2020, 09:19:55 am
content: Is it Christmas already?Just wondering what you have over there... Looks like a stack of power supplies.

author: Ice-Tea
author_rank: Super Contributor
timestamp: January 15, 2020, 09:34:22 am
content: They are. Mostly.Somemost are a bit special so stay tuned!

author: Ice-Tea
author_rank: Super Contributor
timestamp: January 15, 2020, 01:17:42 pm
content: EMI/Lambda TCR 600S1I'll start with the easiest. Mostly because documentation is actually available for this one.LeafletOn the backside, some modifications from the previous owner:Removing those reveals the full part number:Which makes it a 600V, A, digital meter unit. Which is nice. Not so nice: 115V only.From past experiences, I know some units have jumpers inside or the trafos can be wired differently to change the voltage range. No such luck in this case. I have the full manual, includingschematicsand, well, no. For some somewhat good news: it comes in at under 25kg, which means I can still ship it over the pond fairly easy.Obligatory gut shot:For sale?Yes.EDIT: tested on 115V. Works fine except for the fact that the meters show negative voltages and currents. Not sure what's up with that, perhaps the previous owner modified it.

author: Ice-Tea
author_rank: Super Contributor
timestamp: January 16, 2020, 11:20:19 am
content: EMI/Lambda TCR 300-6300V, 6 amp for a total power of 1800W.LeafletModel is a bit odd: 300-6-5-D-TC-0806. This does not exist:There's a 300V/6A single phase model but in that case the model voltage decoding doesn't make sense (see previous post). A 300V 6A tri-phase unit is not supposed to exist, but there's a tri-phase connection for sure:Voltage decode for 3-phase models doesn't match either. Not that I'm complaining. According to the silkscreen, you can use it with a single or 3-phase setup. The wide voltage range means you can hook it up in the US to 3-phase (or a single delta phase) 208V or over here to a single phase 230V. Word of caution: the safety covers are gone, which means there's exposed 230VAC and 300VDC over there. Buyer beware! Also, there's a broken off screw in terminal A, but connecting a single phase between B and C works just fine (there's actually a tape on the unit saying just that). Could remove the screw if anyone cares enough before a purchase.EDIT:Question: why does the TCR model number decoding not make sense?Answer: because it's not a TCR, it's a EMS.Correct LeafletLCorrect ManualVoltage decoding still doesn't make sense, though...Other than that: works! Voltage measurement is a bit off, but should be fairly easy to adjust according to themanual. Same here: could do it before shipping out but I have other stuff to do right now.Gut shot:Two huge caps in there. No Gung Hong Lo here:Everything in good shape. Perhaps some wear and tear around the primary cap:EDIT: Holy Rotation Batman. Erhmm.. it's intentional. International studies have shown you should tilt your head at least every 30 minutes. You're welcome!For sale?Sure

author: Ice-Tea
author_rank: Super Contributor
timestamp: January 21, 2020, 10:01:20 am
content: Oh, hello..

author: Ice-Tea
author_rank: Super Contributor
timestamp: January 21, 2020, 12:10:36 pm
content: Brandenburg 475R Photomultiplier 2kV Power SupplyDon't go looking for datasheets, I tried and failed. If you have a copy somewhere, feel free to share.Bit quircky for sure, this one. Old, and it looks like it too. It also works nicely. That is to say, the voltage is off by about 5% and the voltage meter is off by about 10% in the other direction.I have two more of those, so maybe one of the others is closer. Love how it has one of those, what do you call it, dual scale decade rotaries? Love how it has a polarity switch too. Nice bit of kit. Not sure how much current it'll do, but guessing by the size of the heatsink (and I can't imagine it being anything else but linear) I'm guessing a few tens of mA?Gut shot:A few trim pots that can probably solve the 5% issue, but not touching that without knowing what it does. I'm guessing the MFD should be mFD (wouldn't *that* be something):For sale:YES.If you're interested, I'll be happy to look through the 3 I have to see if any of the others are more accurate.

author: George Edmonds
author_rank: Frequent Contributor
timestamp: January 21, 2020, 04:07:02 pm
content: HIThe standard problem with these supplies is that the high voltage capacitors on the board with the rectifiers go Leakey, normally a change of them fixes all problems.I have a manual somewhere but it would take some finding, from memory maximum current out is 20ma.George G6HIG

author: Ice-Tea
author_rank: Super Contributor
timestamp: January 21, 2020, 04:12:54 pm
content: Hi George,A manual would be great! The caps on the board at least 'seem' fine, no obvious spilling of gut going onKris

author: George Edmonds
author_rank: Frequent Contributor
timestamp: January 21, 2020, 11:23:25 pm
content: Hi KrisAt present I cannot find the manual, moved workshop about three years ago it may have been lost in move.These photomultiplier power supplies date from around 1970/5.The capacitors I was referring to are the three yellow flat construction 0.1MFD 3KV working Suflex ones, they are a form of foil construction and go Leakey without any visible sign.George

author: Ice-Tea
author_rank: Super Contributor
timestamp: January 24, 2020, 04:48:42 pm
content: DELTA ELEKTRONIKA SM3540-D 0-35V,0-40A 1400WI'll be honnest, there's a simple reason why this caught my eye: at my first job, all benches had one large and two smaller deltas on them. It made life easy: whenever something was off, you could be sure it wasn't the power supply. I'm well aware the same can be said for any decent quality bench PSU, but still. I was actually wondering how well their supplies are known outside The Netherlands and Belgium? They seem to be around since forever and don't seem to be going anywhere, which is an achievement in a world where you're squeezed between behemoths like HP/Whatever and cheap decent power supplies.Thedatasheethas full schematics and explanation, as was the custom in those days.All of that still makes only for a decent but unnoteworth entry. Except... For something I forgot and which makes it stand out. Wo can spot it? :]For sale?No!Another Delta is for sale on eBay, though

author: exe
author_rank: Unknown
timestamp: January 24, 2020, 07:44:23 pm
content: Quote from: Ice-Tea on January 24, 2020, 04:48:42 pmLet me guess... It's probably about some acoustic properties. Did I win anything?

author: capt bullshot
author_rank: Super Contributor
timestamp: January 24, 2020, 08:35:30 pm
content: Quote from: Ice-Tea on January 24, 2020, 04:48:42 pmThese things are great. There's a few of the 3kW units at work, and one found it's way to my home lab from somewhere else. Here's the money shot:Note the difference to Ice-Tea's 1.4kW unit (acoustic properties related), though this unit quite quit.More stuff:http://wunderkis.de/delta-elektronika/

author: Leo Bodnar
author_rank: Frequent Contributor
timestamp: January 25, 2020, 01:07:56 am
content: What's 11729C condition like? Is its mixer input OK? How much is it?Leo

author: Ice-Tea
author_rank: Super Contributor
timestamp: January 25, 2020, 08:30:07 am
content: Quote from: exe on January 24, 2020, 07:44:23 pmQuoteOh, wow. Looks a fair bit more recent? Except for the display assembly I can't see much common parts..Quote from: Leo Bodnar on January 25, 2020, 01:07:56 amI pressume you found it on eBay? Not sure what else to say. I have no idea how to test beyond "well, it turns on". If you have instructions on how to test further I'd be happy to give it a spin.Or I can just ship it to you. Normally, I wouldn't mind just sending it over to you and let you have your way with it but with Brexit looming... How's this: I ship it on Monday, you can return it if you find an issue *but* all misery, frustration and costs for shipping the unit back and forth would be for you..There's about 15% Paypal and eBay costs included in the 500€ price tag, so let's say 400€ outside eBay and BT. If you have a VAT reg number (and valid only on Monday, Brexit blahblah) 350€ + 20€ shipping.

author: Ice-Tea
author_rank: Super Contributor
timestamp: January 27, 2020, 11:05:59 am
content: HP8922S GSM MS Service Test SetA state of the art cell phone tester. In 1999. So, is this the moment where Ice-Tea finally lost his marbles? Well, the jury is not out about the marbles, but this unit makes more sense than it seems.. Most of the secret sauce is here:]DatasheetOption 6 is a Spectrum Analyzer. Which means this thing has a:- Spectrum Analyzer (10MHz - 1GHz)- RF generator (10MHz -1Ghz)- Audio Source(25kHz)- Audio Analyzer- Oscope (Up to a whopping 400kHz)And all of that in a single, small, handy package. Well, maybe not that...But still:For sale?No.Sold way too cheap

author: Ice-Tea
author_rank: Super Contributor
timestamp: February 24, 2020, 10:43:06 am
content: ENI MKS DCG-100 RPDG-100A 10kW 1kV DC power supply for plasma deposition.LeafletThe ENI and MKS units are roughly the same. Some conenctor changes, but AFAIK functionaly equivalent.Uhm, what? Lol. Nobody here will be doing any kind of plasma deposition. Stupid Ice-Tea!Yes, well, maybe. But aside from some funky features (arc detection, duty cycle stuff, bipolar functionality,...) it's still a very competent (not to mention high power) regular power supply. If I can get it to operate as such..I actually got the manual (kinda) so that helps..Manual.pdfIt's not 100% correct, output connectors per example are not the same.Note I've been playing around with two units that I'm using for testing as they both have some damage (front grill, or in this case a broken rotary). If anyone is interested, I have undamaged units as well. Anyways... My first problem was that these units need a 3-phase 200/208V L-L supply. Which is readily available in the US, but not so much around here.. So, I was first looking around for a trafo setup untill I realized I have access to a lab that (still) has a 3-phase 220V L-L connection available. Close enough. So, moving on.It boots! But...The "interlock" is a feature that disables the unit and/or outputs if the cover isn't closed, if there is no output connector connector, if a doorswitch is not closed etc.. Not that crazy for a 1kV+ (still need to check the max...). I figured out the orange connector at the back rather quickly, but unfortunately, due to some differences between the MKS manual and my unitsI was stuck after that. So, popping the hood!Note how clean they are inside. They've spend their lives in a cleanroom, and it shows. Or doesn't. You know..Some reverse engineering tought me that two pins on the output connector need to be shorted to defeat the interlock:So, done yet? Eh, no. Still in Interlock protection. One of the connectors at the back, for remote operation, also has an interlock. Unfortunately, the manual has no pinning for these connectors just a "yeah, we're not gonna bother, it's the same as another series". Kinda sucks if the manual for the other series is not available. Anyways, took me some tracing over several boards but in the end I figured it out:Now it works! As I didn't want to operate a device at several 100 V's with just a piece of wire jammed in the output connector, I attached to the internal connection:Huzzaaah! I actually ran it up to 4kW, attached to a lightbulb load in the back.Some notes: this thing is *loud*. Two 15W German built fans will do that. I actually had a bunch of screws behind the unit at first launch and they were pretty much scattered across the lab after that.I can't get it to operate below 100V atm, pressumably because the arc protection is still on. Doesn't look like I can defeat that through the frontpanel, probably need to do some serial commands for that. Work for another day.Also work for another day: as far as I can see, this is a fairly straight forward 3-phase rectifier connection. I'm farily confident that it will run of a single phase 230V connection. The nominal 230V is roughly in range of the 208V +10% requirement (even though well outside of it once taking the 230V +x% into account). So, with the same currents running, it should work nicely up to 5kW or so. So I plan to run it off a trafo, see if and at what voltage I start to draw more current to see if it would hold up at, say, 240V or so.For sale?Yeah.But there are a few caveats.- This is HV supply with some quirks. If you're not at ease with HW power electronics: don't buy it.- You'll need a 3-phase 200/208V L-L power gridOther than that: if you need some serious voltage and power, this might be interesting for you...EDIT: Runs fine of a single phase 230V connection (measured at 238V, feeding 4kW bulb bank).

author: Ice-Tea
author_rank: Super Contributor
timestamp: March 04, 2020, 12:50:45 pm
content: New arrival! I may do a writeup of some of these laterEDIT:The Fluke calibrator is already gone.The Pickering VXI mainframes (that they don't seem to be calling VXI?) feature 4-to-1 75ohm 3GHz cards, fibre optic mux and some general IOThe key for the laser source is missing (or rather, half of the key is inside the lock) so I need to replace that first.

author: Ice-Tea
author_rank: Super Contributor
timestamp: March 11, 2020, 01:24:52 pm
content: New stuff!The tuuubbeeezzz. All the tuuubeeezzzz!Tektronix 575 transitor tracer *Gone*Philips/Fluke PM5134 func gens *Gone*HP 214A Pulse Gen. Also a tube-era instrument. Capable of pulsing 200W up to 1MHz, I believe.Tek TDS2024B. Gone.Now if I could only work up the courage to turn the tube-gear on..

author: nctnico
author_rank: Super Contributor
timestamp: March 11, 2020, 06:36:54 pm
content: If I'm not mistaken that Tek 575 curve tracer is a collector's item. If it works it is likely worth a pretty penny. If not probably still worth something; just don't mess with it yourself.

author: Ice-Tea
author_rank: Super Contributor
timestamp: March 12, 2020, 09:40:33 am
content: Quote from: nctnico on March 11, 2020, 06:36:54 pmThey don't seem to go for huge amounts but they sure are a showpiece. Figure I'd throw them in the Tek facebook group at some point. Like that I'd be sure it'd end up being cared for..

author: SoundTech-LG
author_rank: Frequent Contributor
timestamp: March 13, 2020, 04:27:35 pm
content: So now the proud owner of another 575 as well. Not sure of collectibility, or value, but I did (bravely) power it up. All working cep't the fan, which was just dry bearings. Dragged that beast upstairs to the lab though, and already had the old 555 cart that fits it perfectly... thankfully. Not sure how useful it will be. Maybe just sell?

author: Ice-Tea
author_rank: Super Contributor
timestamp: April 28, 2020, 07:56:11 am
content: New stuff. There's a fair amount of things you don't see too often, so I'll probably expand on a few later...Enertec/Schlumberger 2710 Universal CounterR&S Polyskop ZWOB2 & SWOB5HP8656BPhillips PM3070Schlumberger 4000A precision sig genAdvantest R211C DSAMarconu 2610HP853A/8559 21GHz SA

author: alanambrose
author_rank: Frequent Contributor
timestamp: April 28, 2020, 02:22:02 pm
content: You selling that stuff by the kilo?

author: Ice-Tea
author_rank: Super Contributor
timestamp: April 28, 2020, 02:42:43 pm
content: Quote from: alanambrose on April 28, 2020, 02:22:02 pmIf it doesn't work, it sometimes ends up like that, yeah

author: Ice-Tea
author_rank: Super Contributor
timestamp: April 29, 2020, 11:39:55 am
content: So, not quite done with sorting out the previous batch and then there was this on my doorstep.

author: nctnico
author_rank: Super Contributor
timestamp: May 01, 2020, 03:49:56 pm
content: I guess some volt-nuts are going to be happy.

author: Ice-Tea
author_rank: Super Contributor
timestamp: May 05, 2020, 05:02:44 pm
content: With something like this?I was quity happy with it too. Untill the room filled with that lovely burning paper smell.Yes, Shaeffner with RIFA inside.Had a spare laying around (not my first RIFA fireworks) even though its not the snap-mount, so I'll have to redo it. Quick snap when it was open:And, off course, the crusty Varta Special:Amazingly enough, it still holds 2V, and the unit passes selftests so I assume it hasn't lost whatever it is that is protected by that battery. So, ordering some batteries as well and I will probably have to touch up some traces on the board. But, well, it works and is looking for a new owner.[ Specified attachment is not available ]The 10V reference I got has unfortunately already proven (probably) that it's off by 200-400uV (consistent over a lot of devices). So it's anywhere between bang on and 200uV of, probably.EDIT: will update later with the battery replacement, but this unit and another has already been sold. One remains, but with a dud display. To be investigated.

author: coromonadalix
author_rank: Super Contributor
timestamp: May 06, 2020, 02:41:51 pm
content: Damn lucky door steps i would lost my mind having theses loll

author: macaba
author_rank: Regular Contributor
timestamp: May 07, 2020, 11:29:59 am
content: Are those solartron 7075's? Got any cables or interface units with those?

author: Ice-Tea
author_rank: Super Contributor
timestamp: May 07, 2020, 11:46:25 am
content: Quote from: macaba on May 07, 2020, 11:29:59 amIf I had cables for all those I could just about retire on Aruba. Well, not really, but you catch my drift. One has a GPIB interface unit, but it's totally unstable and shits on the selftests.

author: Ice-Tea
author_rank: Super Contributor
timestamp: May 08, 2020, 01:20:31 pm
content: HP 3582A 2Ch Spectrum Analyzer 0.02 Hz to 25.5 kHzNice DSA but seems to have some issues:Note how both the marker and trace are markes as "uncalibrated". I'm guessing that some battery backed memory was lost. The unit has diagnostics, but in its infinite wisdom, HP has decided that you need some combination of random keys to launch it. Instead of, oh, I don't know, a menu with an items called "diagnostics"So, I'll need to dig around. If anyone has experience with it and knows the key combinations (or even better: the solution to the cal issue): shoot.As it stands, unit is for sale with an "as-is" for the uncal issue. UPDATE: already sold, another one checked and uploaded on eBay shortly. syzygy was right: it was ther vernier cal pullouts that were to blame. Units pass ROM tests as well.EDIT: All three sold. Fast.

author: syzygy
author_rank: Contributor
timestamp: May 09, 2020, 05:07:48 pm
content: 4-15. ROM Self Test.4-16. Because the 3582A is highly dependent upon internal firmware for operation, it isrecommended that the ROM Self Test be performed before other tests are initiated. If thetest fails, refer to Troubleshooting, Section VIII of the Service Manual.NOTEThe following test requires that the 3582A be in the LOCAL modeof operation.4-17. The ROM self test checks the firmware program stored in each ROM by summingtogether the data bits in a known binary sequence. This sum is then compared to a knownresult which is stored in the last two locations in each ROM.4-18. Perform the following steps:a. Set AVERAGE NUMBER 32 to ON.b. Hold AVERAGE RESTART button in while RESET (orange button) is pressed andthen released. Release the AVERAGE RESTART button and press and release it again.c. The test will then begin to run as indicated in the upper left-hand corner of the displayby a mnemonic RU.d. After approximately 5 seconds, the RU will change to OK indicating that the testpassed or an ER indicating that the test failed. Press RESET to return the instrument to thenormal operating mode.

author: syzygy
author_rank: Contributor
timestamp: May 09, 2020, 05:16:42 pm
content: Ice:Maybe the Vernier is just not in the calibrated detent?As long as the sensitivity VERNIER is in the CAL position, the measurement results will be calibrated and can be read in voltage or dBV (1 volt rms = 0 dBV). The sensitivity VERNIER provides an additional 13. dB of attenuation for continuous coverage between the major 10 dB steps.When not in the CAL positions, the alphanumeric text indicates that display and marker results are uncalibrated.When not in the CAL position, only relative marker operations are valid. Note that this control is not programmable.

author: Ice-Tea
author_rank: Super Contributor
timestamp: May 09, 2020, 06:23:28 pm
content: Hey syzygy!Thansk for the feedback. This thing sold within hours of loading it on eBay, but I'll still test it before sending it out if I can. I'm a big fan of returning customers but not so much if they return with gear that didn't work as it should after all.Oh, and I have two more of these

author: Ice-Tea
author_rank: Super Contributor
timestamp: May 09, 2020, 07:15:48 pm
content: Schlumberger 4000A "Precision Signal Generator" 1Ghz (I think)Doubt this will ever be anyone's daily driver, but for folks with a soft spot for Schlumberger (and some desk space...) this might be a fun project.Right, crustyburger. Worse: something rattling inside. I'm a big fan of turning stuff on if it has a chance of working (yeah, yeah, I know, take it apart and all that...) but not when you can *hear* something rattling around. So, pop the hood.Neat! But... what's that???These, my friends, arewoodenstandoffs. All in all, doesn't look horrible, some rust and corrosion for sure, but not terrible.Front cover mounting. Not sure what got it. Shipping, maybe, or else just thermal stress in the box. That's a *lot* of metal...Not a big fan. Backpanel connectivity, pretty bad fit. Other view:On the bright side: no components knocked about, just a few loose screws (don't we all have some?)Turning it around:Those, my young friends are attenuators.Mechanicalattenuators. A small movie for your viewing pleasure:http://www.ftrnf.com/KB/Schlumberger/4000A/1.mp4Yeah, none of that "united" rubbish! And time to turn it on. That too. After some ruckus (fan was hitting the fanguard..), it seemed to start nicely. As the movie shows, it reacts to other attenuation settings. It seems to think it's outputting something, it reacts to input (LED changes decimal point,...). But... Nothing on the connector. May dig around a bit more later but if I can't figure it out soon, it will become someone's project.If you're interested in it, let me know.EDIT: the internal reference works (1MHz connector on the backside works), as I ran out of "low hanging fruit" fixes, I'm tossing this in an auction on eBay so it will find a nice new home.https://www.ebay.de/itm/143603651551EDIT: Sold through an eBay auction. For cheap

author: Ice-Tea
author_rank: Super Contributor
timestamp: May 13, 2020, 11:58:33 am
content: HP8970A - Noise figure meterNice enough bit of kit, but truth be told: I've no idea how to test this. If there's anyone out there that can think of an easy functional test: I'm all ears.EDIT: both shipped off to a radio amateur to have them looked into. Once they get a stamp of approval, they'll be for sale.

author: Nuno_pt
author_rank: Frequent Contributor
timestamp: May 13, 2020, 12:19:10 pm
content: You would have to have a noise source, check some videos on youtube.

author: Ice-Tea
author_rank: Super Contributor
timestamp: May 13, 2020, 12:23:50 pm
content: Yup, watched that. Wich made me realize I'm in need of a simpler solution/test

author: Nuno_pt
author_rank: Frequent Contributor
timestamp: May 13, 2020, 12:39:43 pm
content: Seehttp://www.dl2khp.de/projekte/noise-figure-meter.htmlor Franco <https://www.rf-microwave.com/app/resources/uploads/diodes/VHFComm_NW303.pdf>, for cheap noise source

author: AVGresponding
author_rank: Super Contributor
timestamp: May 13, 2020, 02:44:31 pm
content: https://www.ebay.co.uk/itm/ROHDE-SCHWARZ-R-S-SUF-2-NOISE-GENERATOR-L420/283876155455

author: Ice-Tea
author_rank: Super Contributor
timestamp: May 13, 2020, 03:07:57 pm
content: "Sold for parts". Yes, please, I want some more stuff to repairSeriously, though, appreciate the effort. Funny enough, I put out an offer on one of his detector heads for the R&S SWOBs

author: George Edmonds
author_rank: Frequent Contributor
timestamp: May 13, 2020, 04:13:13 pm
content: HiI have a calibrated noise source, but in UKGeorge G6HIG

author: Ice-Tea
author_rank: Super Contributor
timestamp: May 13, 2020, 04:24:09 pm
content: Hmm.. you wouldn't be interested in playing around with two of these? The playing around is free, the shipping is free, there is no result obligation. At some point, you'd be asked to put it back in the box, put the provided shipping label on it and drop if off at a DPD service point (if and when allowed by COVID obviously).

author: AVGresponding
author_rank: Super Contributor
timestamp: May 13, 2020, 04:31:10 pm
content: Quote from: Ice-Tea on May 13, 2020, 03:07:57 pmHaha no effort involved, it popped up on my ebay saved searches list as Rohde and Schwarz is one of my search strings, and I'd just recently seen your post and thought I'd stir the pot...One of these days I'll win the bidding on one of your 7061's...

author: Ice-Tea
author_rank: Super Contributor
timestamp: May 13, 2020, 04:33:31 pm
content: Quote from: AVGresponding on May 13, 2020, 04:31:10 pmHeh, the final one is up for auction now. The display is a dud, but the unit was verified with a display from another unit

author: George Edmonds
author_rank: Frequent Contributor
timestamp: May 13, 2020, 04:50:11 pm
content: HINot a million miles from you in Dover Kent.Will come back to you later tonight when I have had time to do some research.George G6HIG

author: George Edmonds
author_rank: Frequent Contributor
timestamp: May 13, 2020, 07:57:06 pm
content: HiMay I first ask you what are you trying to achieve regarding the two HP 8970A’s. I do hope that you realise that you only have part of a complete noise figure setup, just like the HP RF power meters you only have the detector section and are missing the actual noise generator which is a HP 346B Noise Source. The HP 346B Noise Source alone fetches in the order of $1,000 plus each.I don’t have a HP 346B Noise Source, but I do have two Noisecom Inc NC346-precision Noise Sources, which have exactly the same specification in all aspects as the HP ones and they look identical, coincidence?My two Noisecom Noise Sources are new and unused, so it can safely be assumed are still very close to being in calibration.As far as you know do the 8970A’s work? The online manual scans are not of the best quality, but Artek do have a scan.They also suffer from leaking backup Nicad batteries.I have a well equipped workshop with a considerable amount of test kit, including a HP signature analyser, so could make some minor repairs.I live just outside Dover, but due to the UK Covid-19 regulations am unable to leave my home at the present time.Let me know your thoughts, my direct email is G6HIG@Yahoo.com.RegardsGeorge G6HIG

author: Ice-Tea
author_rank: Super Contributor
timestamp: May 14, 2020, 06:39:10 am
content: Hi George,Nothing nefarious about what I'm trying to do. I'd like to sell these, and preferably I'd do that in a "tested, works" setting rather than the "eh, well, there's something on the display" that I have now. I have no reason to assume they're bad, but no reason to exclude the possibility either. One of them at least has the NiCd die already, if we'd move ahead with this I'll check & replace both befor shipping.I'll contact you by mail, but I figured I'd put this out here for everyone to see. If you're stuck at home you might be interested in a free temporary toy to play around with

author: Ice-Tea
author_rank: Super Contributor
timestamp: May 15, 2020, 11:41:37 am
content: Some more RIFA bliss for your viewing pleasure on a Marconi 2382 + 2380. While checking her out, something went pop rather violently. Not that the unit seemed to care, it just chugged along. Even though it was not the "hiss" I'd associate with RIFAs spilling their guts, there's no price for guessing what went wrong here... Come to think of it, the hiss is probably associated with the potting agent of the Schaeffner line filters gassing out rather than the RIFA itself.EDIT: Have two of these. The other one is on eBay already, this one has a new cap and has made a full recovery. Ready to be sold.EDIT2: Actually, not really. When doing additional checkups, I noticed the TG output is a bit jittery. Shifts up and down a few dB from time to time, even turns off for some sections of a scan from time to time. So this one is on auction "as is":https://www.ebay.de/itm/143633346587

author: George Edmonds
author_rank: Frequent Contributor
timestamp: May 15, 2020, 02:37:59 pm
content: HiOh for the smell of a burnt Rifa in the morning, only to be bettered by a blown up Selenium bridge rectifier.George G6HIG

author: AVGresponding
author_rank: Super Contributor
timestamp: May 15, 2020, 04:13:51 pm
content: With a side order of crispy SRBP?

author: meandeev
author_rank: Regular Contributor
timestamp: May 20, 2020, 10:17:36 pm
content: Hi,I´m the new owner of this gear, bought it without the knowledge, that you are at eevblog! Found this thread after buying the 7061.Quote from: Ice-Tea on May 05, 2020, 05:02:44 pmSo you did replace the Schaffner with a new one, didn´t you? That explains the alarming smell while open the 7061, but I didn´t find the reason :-)Quote from: Ice-Tea on May 05, 2020, 05:02:44 pmHm, I desoldered the battery and some parts, because I found that the corrosion was under the silkscreen and has eaten some of the copper traces. After some vinegar, plenty of distilled water and IPA and PCB-laquer this should last for the next 33 years (I found a manufacturing date of 14th. Feb 1987!)Quote from: Ice-Tea on May 05, 2020, 05:02:44 pmAl in all it was a good experience of a "lucky bag" (remember I wasn´t aware of this thread and this pictures!) even with the strange repair attemps of the previous owner (not you Kris!) at the scanner card ...PS: the last one 7061 will be hopefully also on the way to me soon :-)

author: Ice-Tea
author_rank: Super Contributor
timestamp: May 21, 2020, 07:49:37 am
content: Quote from: meandeev on May 20, 2020, 10:17:36 pmCongrats! I think you bought the *spare parts unit too?QuoteI did. I think the RIFA replacement was in the description? You can replace the Schaeffners but the smell stays for some time, I fearQuoteI cleaned up the PCB with a generous helping of IPA and checked the connections. But I suppose that some more TLC is in order if you plan to run it another 30 yearsQuoteEh? Didn't notice anything. My handywork is the battery and Schaeffner replacement. Didn't touch anything else. What else was worked on?QuoteHeheh, that answers the questionIf the missus lets me go, it should ship tomorrow. What are your plans with it? You could get a fresh display on eBay, but do you *need* two 7061's? Anywhoo, thanks

author: meandeev
author_rank: Regular Contributor
timestamp: May 21, 2020, 09:35:41 pm
content: Quote from: Ice-Tea on May 21, 2020, 07:49:37 amI read the description again: yes, it was in the description - but I didn´t expect any repair, because of the usual ebay-"repaired/maintened by previous owner" (remember:I found the threat after I purchased...)Quote from: Ice-Tea on May 21, 2020, 07:49:37 amYou can see it also in your picture "Quick snap when it was open": a missing relay at the scannerand underneath some missing copper-traces repaired with wire (see attachments).Quote from: Ice-Tea on May 21, 2020, 07:49:37 amSpare Parts for Frankenstein mixupI was keen on the Scanner to replace my keithley 705 Scanner/HP34401 setup (never completely finished). So I want to create a fully functional 7061 with scanner option with the best stability of/from both. And spare parts if something happened ...

author: Ice-Tea
author_rank: Super Contributor
timestamp: May 22, 2020, 08:04:42 am
content: Quote from: meandeev on May 21, 2020, 09:35:41 pmMissed that. Completely.QuoteIf you're looking for a minor extention: check post #2 in this thread.

author: Ice-Tea
author_rank: Super Contributor
timestamp: June 05, 2020, 08:28:58 am
content: Advantest R9211C DSAMentioned before, I was quite happy with this one. 2 Channel 16-bit DSA (0.01Hz-100kHz). They are sought after, and this is the one with integrated SG, which makes it extra nice.Unfortunately, it throws a lot of errors during startup, sometimes throwing the towel altogether.So, opening her up. In all honnesty, I wasn't very impressed. Sloppy wiring, sloppy bodges (and quite a few of them). They sure crammed a lot of stuff in there but it feels a bit thrown together (even though obviously a lot of effort went into it)Popping out boards, everything looked fine, untill...Ah, yes, the early days of SMD elcos! Wasn't expecting much trouble here, as this is the digital board. But even if this is not the cause of the analog board failure, it's obvious I need to fix this first. Fresh elcos and opamp on order.EDIT: actually, upon further inspection it's at least partially analog. As evidenced by that big B&B IC, subtly named "DAC702KH"Which is actually good news, as this makes it more likely the elcos are the root cause of the error.Unfortunately, after replacing all the SMD caps and one opamp, the error is still there (not the exact same one, though...). So, not done yet.I know I mentioned it before and I know a board spin in those days was not trivial, but c'mon!

author: Ice-Tea
author_rank: Super Contributor
timestamp: June 19, 2020, 02:44:23 pm
content: XFR 7.5-140Yes, that's "140" as in "140A". That's welding territory.Unfortunately, it took some damage in shipping, one of the rotaries badged in. So I have a gut shot to share:Was kinda hoping I could just fasten a bolt or something, but, eh...No Wung Lo Ho here, Bourns baby! That's a 15€ pot...Pot on order, to be continued...EDIT:Repaired. Short circuit test. That's 136A right there. The zero current null is a bit off, other than that: spot on. EBay below, always cheaper by PM.EDIT: So, the forum monstr was hungry and ate the right picture.https://www.ebay.de/itm/143647932656?ViewItem=&item=143647932656&ssPageName=ADME:L:LCA:DE:1123EDIT: sold.

author: nctnico
author_rank: Super Contributor
timestamp: June 20, 2020, 10:25:37 am
content: That sucks but do yourself a favour and buy an original replacement and not a fake from Ebay.

author: Ice-Tea
author_rank: Super Contributor
timestamp: June 20, 2020, 01:59:58 pm
content: Quote from: nctnico on June 20, 2020, 10:25:37 amAlready done. No point in putting Guanxihue tires on a Ferrari.

author: Ice-Tea
author_rank: Super Contributor
timestamp: June 22, 2020, 10:52:23 am
content: R&S ZWOB2 - "Network Polyskop"What now? Well, kinda a hybrid between a SA with TG and a VNA, I suppose. Not a "real" SA as it relies on external power detectors (and is probably inferior in terms of noise floor etc?) and not a rel VNA either (but it has two ports, will measure reflections etc with the right plumbing etc.) as there can not be phase relation info between the channels I've seen machines like this (Marconi 6500, IFR 620x,..) marketted as "scalar analyzers".Unit's been around the block (paint chaffed, trim knackered, corrosion,...But last cal in 2010 (which is not *that* bad for a machine this age...), and boots up without trouble, passes selftest, no screenburn...RF out works:So, at this point I was fairly happy. I was looking for detectors on tha bay (which aren't horribly expensive..) but when I came back to the unit, screen was off (fans still on) and fault LED at the back was lit. Trying a few more times with the same result: works fine untill it goes into protection mode (or something). So, yep, popping the hood.Wiring & general floorplan silkscreened. As often with R&S gear.Insided. Clean as a whistle. When the unit goes into fault mode, the 5V green LED goes out too. So I guess a marginal 5V rail in need of recapping? At this point, I'm not sure if it's worth the effort. There's a simple way of finding out: ship it off to auction on eBay!eBay auction: #https://www.ebay.de/itm/143637893973?ViewItem=&item=143637893973&ssPageName=ADME:L:LCA:DE:1123EDIT: sold.

author: Ice-Tea
author_rank: Super Contributor
timestamp: July 02, 2020, 04:06:40 pm
content: HP 334A Distortion AnalyzerWas introduced in 1966 (manufacturerd a lot later probably) but this thing IS STILL IN CALEDIT: the Forum monster was hungry and ate the pictures. Actually not an excuse, there are some issues.EDIT: This one sold, received a new batch, though..=>https://www.ebay.de/itm/143957802476

author: Ice-Tea
author_rank: Super Contributor
timestamp: July 15, 2020, 01:01:44 pm
content: LeCroy 9310AM 2 x 400MHz/100Ms/s/200kpt and 9314L 4 x 300MHz 100Ms/s/1MptCame in together. Yes, yes, I know, sampling speeds below the analog Nyquist requirements are stupid. And even 1mpt/ch is stupid as well. But if you're looking for some analog umpfff.. for repetitive signals (or just like LeCroy) these are quite nice. Not too heavy, loud or big. Both units are in good nick, notably the feet at the back are in good shape. On a 19" rack kit and one screen cover are there, too. The 9314's screen shows no signs of burnin, which can't be said of the 9310. Unfortunately, the vertical controls on the 9314 are knackered. There's actually a slip in the remains that allows a flathead to turn the rotaries if needed but tit's a shame nonetheless. The 9310 is even worse: it boots, peeps and reacts with clicking relays as prompted but the display is gone.All of the above is, off course, an invitation to a swapfest. Get the 9310 keyboard for the 9314. Use the 9314 to verify analog board, power supplies etc so it can be broken up for parts.Popping the hood:Pretty clean. They look pretty different but they are not. The 400MHz unit has additional shielding on the mainboard, the 300MHz does not. Having a look the the CRT driver board and "butt" board to check for bulging electrolytes or dreaded RIFAs. None to be found. But... there's something else going on. Can you spot it?Long story short: yay!For sale:https://www.ebay.de/itm/143657621979https://www.ebay.de/itm/143657620998

author: coromonadalix
author_rank: Super Contributor
timestamp: July 16, 2020, 01:38:13 am
content: you're talking of the connector inserted in the black heatsink

author: Ysjoelfir
author_rank: Frequent Contributor
timestamp: July 16, 2020, 06:34:28 am
content: Quote from: Ice-Tea on July 15, 2020, 01:01:44 pmWhat the.... why?

author: Ice-Tea
author_rank: Super Contributor
timestamp: July 16, 2020, 08:14:39 am
content: Quote from: Ysjoelfir on July 16, 2020, 06:34:28 amHell if I know. But the CRT was burned in. Perhaps it was used in an automated setup where the screen wasn't required and they figured with would save the display/power supply like this.

author: Ysjoelfir
author_rank: Frequent Contributor
timestamp: July 16, 2020, 10:14:06 am
content: That's actually not that bad of an idea imho. If you don't need the CRT, why kill it by displaying the same picture over and over?

author: Ice-Tea
author_rank: Super Contributor
timestamp: July 16, 2020, 10:26:04 am
content: True, but then again you can also turn down the brightness

author: Ysjoelfir
author_rank: Frequent Contributor
timestamp: July 17, 2020, 06:55:03 am
content: But that wouldn't stop it from being heated all the time.

author: Ice-Tea
author_rank: Super Contributor
timestamp: August 16, 2020, 02:49:16 pm
content: Agilent 34420A Micro-Ohm Meter, 7 ½ Digit, includes new 34102A testleadThis thing is awesome.. And odd. Has some great specs, is in great shape. Includes the testlead, which I bought new for it. It sold fairly fast, customer was happy at first but later indacated there was too much noise on the measuremens and returned the unit for a full refund.My first reaction was that he was full of shit, was measuring noise in his lab, borked up the nulling connector, ... So, when I got it back I wanted to repost it on eBay just like that. My engineering caution got the better of me, though, and I shipped it off to one of the forum voltnuts (Dr.Frank). He actually confirmed the customers findings: on higher voltage ranges, there's an occasional uptick in noise on the measurement, violating the specifications. He made another point: it's mostly moot as you would not need such low noise measurements on such high ranges (or rather: the 34420 is more meant for low voltage measurements). He verified pretty much all functional blocks without finding any issue. His final suggestion was perhaps newer FW contains mitigations but an update is not trivial.So, finally, this is a coin with 2 sides. The unit is adjusted, calibrated and fully checked but there's a noise issue.https://www.ebay.de/itm/143683112584SOLD

author: Ice-Tea
author_rank: Super Contributor
timestamp: November 18, 2020, 05:50:33 pm
content: R&S APN62AF generator, but, like, a good one:- balanced or unbalanced- output impedance between 10 and 640- 0.05% distortion (!)- this model has the output transformer optionSecond one I receive, second one that shits the pants (Schaeffner line filter, off course). No biggie, but not cheap to repair either. I actually ran out of filters, so I have new ones on order. For sale if you're interested but it offers the option to share the insides of this bit of kit. The transormer is clearly visible.

author: AVGresponding
author_rank: Super Contributor
timestamp: November 18, 2020, 06:41:08 pm
content: Quote from: Ice-Tea on November 18, 2020, 05:50:33 pmWait what, it has a Pikachu inside it?

author: Ice-Tea
author_rank: Super Contributor
timestamp: November 18, 2020, 06:56:50 pm
content: Heheh... took me a minute or so to catch upYeah, that's the optional trafo.

author: Ice-Tea
author_rank: Super Contributor
timestamp: January 10, 2021, 03:30:11 pm
content: SANKI ESD-8012 kV ESD Electrostatic Discharge TesterThis thing is just too much fun...Actually managed to capture a discharge in slowmo:https://photos.app.goo.gl/1PfYo8ac1PtRM5Yb830kV ESD discharge tester. Now, do I keep it for when gentleman come calling for my daughters or do I sell it now?Eh, well:https://www.ebay.de/itm/143914342337SOLD.

author: PA0PBZ
author_rank: Super Contributor
timestamp: January 10, 2021, 06:33:58 pm
content: Not sure how you created that link but that's not going to work:http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=https://www.ebay.de/itm/143914342337This will do:https://www.ebay.de/itm/143914342337

author: Ice-Tea
author_rank: Super Contributor
timestamp: January 10, 2021, 06:51:32 pm
content: With the eBay "function" of the forum editor. Probably should have known betterThanks for the heads up!

author: PA0PBZ
author_rank: Super Contributor
timestamp: January 10, 2021, 06:59:08 pm
content: Looks like you have to feed it the item #, but why you'd want to use that is beyond me

author: Ice-Tea
author_rank: Super Contributor
timestamp: January 29, 2021, 12:24:10 pm
content: Had to pop open a Marconi/IFR 2024/2025 to change covers so I took a quick picture for the fancier of finer electronics.Yeah, I have some for sale if you want.https://www.ebay.de/itm/143932629977

author: Ice-Tea
author_rank: Super Contributor
timestamp: January 30, 2021, 02:38:04 pm
content: Had a gluke Y5020 current shunt on the bench. Something was rattling, so I opened her up.Turns out the rattling were the front connectors that were openAnyways, gives you guys a peak inside.

author: Ice-Tea
author_rank: Super Contributor
timestamp: March 12, 2021, 10:00:39 am
content: Marconi 6200B RF Test SetBit difficult to catch this thing under a single name, so they went for "RF Test Set". In essence, it combines (up to 20GHz)- RF Signal Generator (including sweep)- Frequency counter- Power meter (with external sensor)- Scalar Analyzer (up to four traces, with external sensor)A scalar analyzer lands somewhere between an SA and VNA. It can read multiple traces at once (per example to compare to plot return losses against output power or something), so it does better than an SA there) but it can't offer any insight on phase relations. Unfortunately, it requires external sensors for both the scalar and power measurements. I have a few power sensors in stock and am including one with this unit but I currently have o scalar sensors. They aren't all that difficult to find on eBay, but they aren't all that cheap.I actually have a custom flight case for it if you're interested.eBay listing:https://www.ebay.de/itm/143969971751Essentially, with that kit you get a 20GHz RF gen, counter and power sensor. If you would like to complete the set with one or more scalar sensors you can buy them on eBay or if you want it to work guaranteed I can buy the scalar sensor and test it all before shipping out.