Arg! As a sonar guy, I can tell you that the function of the TGC is to increase the receiver gain as time elapses from when the pulse was transmitted. Without this, the signal would be huge (and clipping) right after the transmit pulse ended, and buried in the A/D's quantizing noise at larger time delays from the end of the transmit pulse. In many radar and sonar units, this is called TVG (Time Varying Gain).
Assuming it's standard SCSI, you really should rip out and hang on to that MO drive and disk - those are small and rare enough to be interesting to a computing museum.
6:25 E-net is Ethernet: that’s an AUI connector, to which one attaches an Ethernet transceiver for the physical medium used (10Base-5, 10Base-2, or 10Base-T).
Please tell me your sarcastic.... in the early 90’s everything had AUI.. I made lots of money (for my bosses) selling AUI transceivers to swap users from 10Base2 to 10baseT
44:00 on the Advnaced IF Output board top left corner the two ceramic chips are Cartesian data (Real and Imaginary) into Polar form (Magnitude and Phase) converts (PDSP16330A) made by GEC-Plessey Semiconductor (GPS).
You can easily buy an ultrasound that has more capability than this which will also fit in a briefcase and weigh about as much as a heavy laptop. Ultrasound technology has come on leaps and bounds in recent years. For an example look up the Philips CX50.
Believe me that that hdi 3000 has a doppler spectrum quality competing with todays mid-high level ultrasounds (not high ends, but very close). If it had some B mode image processing capabilities of CX50, iHDI3000 should have been better than it in B mode too. Because it has 128 channels using all trnacducer crystalls without switching and a very good analog signal amplifier. Channel number is more than most of todays machines, so this rockets the signal quality. . Yes it is some old. But for the age of it it was like from outer space. I have used one 10 years ago, and shocked about its capabilities. First of all probe quality portable machnies are poor. They generally use a new tecnology (without crystal), I am not sure about cx50 but HDI porobe quality is top one, single piece crystal cut. If the pure signal quality recieved is good (signal/noise ratio), it really boosts image quality. Todays lower end ultrasounds mostly use some mathematical calculations like speckle noise reduction and some other techniques to boost image quality. I have worked on ultrasound (as field service eng. and application specialist (Medison- Samsung, Kretz, Hitachi-Aloka) machines since 1996, and saw lots of USG machines.
Wow, this is a blast from the past for me! Was working on these when I got into ultrasound field service. If you want to see newer examples, we've got a ton of them around here I have access to.
I used to service these units when they were still in use. They weren't as popular as the higher-end HDI 5000, as they didn't have as good of image quality. ATL was purchased by Philips Medical, BTW, so they still exist within that corporation. The panel on the front was referred to as the "mux" panel (multiplexer). It is responsible for switching between the three transducer input connectors. Those highly shielded boards the the mux panel plugs into are called the front end boards. They are responsible for beam forming. Each transducer is a bit different (i.e. linear, convex, sector, etc.) and these boards compensate for each individual channel on any given transducer. Each front end board contains an array of preamps that are controlled by the software. They can be swapped around in order to troubleshoot faults in the boards. Information for each individual transducer is stored on a circuit board inside the large connector for that transducer. That's why the connector housing is so large. Color, PW and other functions are added by the boards connected to these front end boards (just keeping it simple). By the time the signal leaves the front end section, it has been processed into a raw image with X,Y,Z and direction of flow information. This then goes to the "back end" section of the unit, where the image is processed, demographics are added and the image is displayed on the monitor. The MO disk on the back of the unit is sometimes a bootable disk. It can be used to restore the hard drive when it gets corrupt. I can't remember all of the commands, but I think one of them is when you press "super key" and "0" at the same time, it will put you into service mode. Thanks for the tear-down video. It brought back a lot of memories!
WOW! That machine is absolutely amazing! My mind is blown. SO many ICs. Its never ending. Think of the people that designed and layed out these boards. Absolute geniuses. Remember, this was designed in the MS-DOS era, there was no GUI CAD software 30 years ago. It must've taken months if not years to get it right. The schematic diagrams must be 1000 pages long. He should frame some of those PCBs and put them on the wall. I would.
Simon. There were GUI CAD systems around more than 30 years ago. I was designing PCBs on a very sophisticated Computervision CADDS3 system back in 1984 and even then that system was already pretty old. There were plenty of other CAD systems around at the time although these were running on mini-computers or even main-frame computers.
10:00 Dallas1286? Thats why they threw it away! After decades the Battery is empty! Helped another Doc save his unit by changing that stuff ! He didn´t want to learn how to handle a new unit because of his age...
@@ve2mrxB These dallas modules are notorious, the battery is encapsulated inside the giant package. It wouldn't be using an external battery even if there was one.
briefly played with some old ethernet cards with this connector and the coax 10Base2 also had some adaptors for AUI to 10base2 coax. I actually set up a small 10Base2 network before I had the gear to make 100baseT etc UTP cables. Played with an old print server that only had a 10Base2 interface, had to talk to it with telnet at one point... good times
william fleete 10Base2 was also my first exposure to Ethernet. But it was already on its very last legs at that point, with twisted pair clearly having won the battle! :)
Wife blew out her ankle at netball. Went to Doctor “ how many days” not our GP as it’s just a normal netball thing, no big deal.............. X ray. No busted bones. Ultrasound. All good no problemos. Still not better after ages. Go to our GP and he gets a bit pissed and orders an MRI, ligament no longer connected. One full ankle reco later. Ultrasound was piss poor for this scenario
Bruh. Ultrasonography requires an exquisite understanding of anatomy and physics and the ability to interpret three dimensional imaging. It takes years of practice. It's all about the gorilla holding the hammer, as AvE would say.
Yeah it's a bit of an artform, I find it's best whenever you break something you break it well enough that it's obvious to even the first year med students... When they can point to two different parts of the picture at least 5cm apart and say this is where it is and this is where it's supposed to be then it gets diagnosed quickly
Sonographers are not doctors, it generally requires a masters degree in ultrasound. Due to this, sonographers, particularly new ones can miss things, especially ligament damage which can be hard to spot. In this case, the GP should have either been able to diagnose a torn ligament or asked for an MRI straight away. More than likely a bad combo of bad doctor and bad sonographer, but can't entirely blame the sonographer.
@@ShortCircuitGaming a sonographer should not be trying to diagnose this kind of thing. Nor should a GP. This is not a simple pregnant/non pregnant diagnosis. This kind of diagnostics is the domain of the specialist radiologist. This may sound overdramatic but with ultrasound you need to "become the machine" and have scanned hundreds(thousands) of normal before you can identify abnormal. So many variables at play.
So cool you got your hands on one of those. In the 80s my grandfather worked for HP and machined out most of the parts for the first prototype ultrasound machine made by HP.
6:26 That E-Net is using an older style Ethernet connection using DB series connectors. We used them on some of our network equipment back in the 1990s.
I have worked with this 3000 model, it was the cheaper version of the hdi5000. I still remember the feeling of the buttons! My first years as a ultrasound technician in the hospital... Memories...
Never apologize for the length of a video. Bored people can scrub around and see the bits they want to see. I appreciate the detail -- were it not for your teardowns, I'd probably never see most of this stuff (let alone get the insight!).
I haven't been inside a piece of medical equipment since I was a kid. My dad used to work for Datex Ohmeda. They had since been bought out by Instrumentarium, which was then bought out by General Electric, but back then my dad was the senior service rep for British Columbia and the Yukon (Canada). He used to go out all the time to hospitals when one of the machines needed servicing, and sometimes they'd just ship them to our house so he could service them there. In which case, I got to see their guts. I don't know if Ohmeda did ultrasound machines, but he did get a lot of anaesthetic machines and ventilators to service.
Those Custom Connectors actually look like Cannon DL series. Used on some high end audio equipment (Solid State Logic 4000, 6000, and 9000 mixing consoles)
Yup, SCSI bus controller. They were sold under a number of names, Symbios logic, LSI logic and NCR (I think they were the original owners of the IP). The 53c710 is a really old one, apparently also found in amigas but they were everywhere. I remerber wanting a 53c896 based card for my alpha.
Nice teardown! Was looking forward to this one. Wondered what happened to it since you bunkered it years ago. As expected, there's more silicone in this thing than on the beaches around Sydney
At 45:40 you can see an x86 Processor by AMD. An 80186-16. You don't see them all that much (or rather more outside of an IBM compatible PC than inside one)
Torn ACL diagnosis... Ultrasound is not the right tool for the right job. Those sliders are the gain controls for different depths. I am totally enjoying this video!
That is very similar to the ultrasound machine used on me at an office in Ukraine not too long ago. Cost me $1.35 to get an ultrasound to identify the sudden pain in my side being a kidney stone. The office was a simple bare room and just that machine, table and a cabinet with supplies. When I say bare, I mean unpainted concrete bunker walls. The doctor's entire life and ability to feed his family probably depended on that machine working. Back in the states, Paid $500 at a clinic on a modern state-of-the-art machine to get the exact same results. I was impressed and also made aware of how overpriced our medical system is.
I worked for a cardiovascular place and that gap you said might be for a printer often had a high end VHS recorder fitted to enable analysis & reporting away from the machine.
"What's e-net?" Pretty early ethernet connection. Looks like a pretty standard vme chassis and backplane for high frequency and low noise operation and computing.
Correct. It's actually an AUI connector for 10Mbit/s ethernet. You'd need to have used a transceiver to convert it from AUI to BNC or RJ45 dependent on how your ethernet cabling was wired at the time. FWIW, the original Cisco Routers (2500 series) used to have only AUI on them for years.
That "E-net" (db15?) port probably attached to a "thicknet" Ethernet transciever for the old coaxial networking standard. I've never had to mess with it, but I've heard it was a pita.
Dave, if you haven't scrapped the chassis yet.... they make great mobile carts for other equipment. Add some batteries, inverter, and whatever equipment you need. Oh and those power rectifiers with the heat sink you couldn't get off ... they look like a Vicor model. And yes they're a pain to scrap...
Those chips labeled "MHS" are mfg'd by "Multi-Health Systems Inc.", hence the acronym "MHS". They are still in business and amazingly still making chips for ultrasound machines.
Don't worry about the length, love when you waffle on. Really incredible bit of tech. One has to wonder, given the strict requirements for medical equipment, and the obvious design complexity, how much have modern machines really changed? As you say, it would be very interesting to compare.
The Chip manufacturer "MHS" was "Matra MHS", basically one subsidiary of the european AEG group, which as electrical/ electronics Dept. was owned by Daimler-Benz group. (Can be found in "The European Electronics Industry Towards 1992 - A Profile of Market Leaders", written by Andrew E Fletcher
Dave. Have you done a tear down of the HP9845 calculator appearing in the background at 2:15. Could be an interesting device to have a look inside. I seem to remember HP devoted a whole issue of the HP Journal to describing the design and construction of this calculator when it was released.
Was just going to ask if that was an HP 9845 with the monitor missing. Not a calculator though, a serious CAD workstation - for its time. hp9845.net/9845/hardware/9845c/
@@pixymisa8087 I called it a calculator as it is featured in the calculator section of the HP catalog. However, with closer reading of the catalog, I see that HP describe it as a desktop computer.
I used press fit connectors in the past, make sure you define the right hole size and they are super reliable. Order a couple of extra PCB's and you can press the connector yourself buy using a vise.
I remember those connectors from ATE equipment, where they were used to connect the DUT cable assemblies to the front of the rack, and from there the connectors were split out to a set of power supplies, giving a variety of power supplies, 115VAC 400Hz 3 phase, each phase adjustable voltage wise, and with the actual output voltage read along with the current by both the power supply itself and the ATE acquisition system. Then 28VDC, up to 50A, as some of the stuff needed that amount of power to operate. Then a massive patch panel, wheere you had a 200 by 200 pin array of interconnects, so you could have the input and output lines connected to the simulation and readout side. Those connectors are rated for low noise, even after 1000 insertion cycles, and you really do not want to know the cost of them, though they do have the ability to replace individual pins and sockets if they do fail. Perhaps not with the ultrasound, as they likely potted the plug. I would hazard half of those added modification wires are there to repair broken inner traces in the boards, as they likely were only tested and passed in the PCB plant, but after the PCB was assembled and soldered they would find the failed traces that did not survive the reflow cycle during test. Expensive board, expensive components but cheaper to do diagnosis and place the wires than scrap the entire board that mostly works, and hope the next board is perfect. IBM Deathstar, not likely to still work, though there are a lot of glued down components, using some quality clear acetoxy free silicone instead of the crusty glue.
Repairing this scanner and consequent dipping into it with oscilloscope, watching waveforms of the electrical signal that is being sent to transducer and received from the scanned media would be PRICELESS CONTENT. Please, consider making such video before doing destructive teardown of probing heads.
This is p°rn. Teardown of the physical doodle vibrating thingy needed. Can't wait to see a teardown of an MRI machine also. This is some fascinating technology. It probably won't fit in the lab.
Nat Semi DP8392! I was one of the process engineers (whilst I was doing my Eng Degree) in Gourock, Scotland when that was running through the new 8 inch fabrication line in about 1988 or so! I've always wondered who used that bugger.
MCM62990 is a high speed SRAM, 4K x4. Started in that group a couple yrs after that part came out. Back then 15 ns was considered fast. By late 90’s we had 4ns parts. BiCMOS.
I used to build similar machines back in the 80's under the brand names of UniRad or Johnson & Johnson. They rarely shielded the card cages like this, no need to if designed properly. They just put cans on the parts that might leak RF. Also, remember, these machines could take a black and white picture, derived from nothing more than sending out sound waves, and calculate weight at birth for babies. When the calculations were incorrect, the manufactures got sued for big bucks.
The traces on those power boards look really unprofessional. Maybe they had an intern who could lay those boards out while the pro's worked on the real stuff? The rest of the system looks great.
Maybe do a decap series? Considering how much silicon you have got you can just batch process them. Its also very easy. You can blowtorch the ic package directly or use a 100w halogen lamp to do a controlled destruction.
Old medical equipment like this fascinates me. If it's functional, what can I do with it? Find uses around the house, on the car? If it has a PC based front end, can I just load up DOS and play Doom on it? If it's non-functional, can I re-use any other parts, again in particular any PC-based stuff? Of course if all else fails, since no expense was spared in the components these are great for parts harvesting! I'd also like to see what might be lurking on all of the flash/eeprom chips.
(7:51) - *_"...so they look like PCB connectors, by the looks of it..."_* Yeah, those are definitely PCB connectors. They're connectors and they're soldered to the PCB. *_Absolutely correct !_* >
Given that Raytheon were heavily invested in radar, and radar return processing is very similar to ultrasound return processing, it makes sense to see their chipsets in these devices!
Pretty sure that the initial board with the serial port on it and the big 'eth' port is actually a very old ethernet connection network card, although I can't tell you which type since I haven't used that spec for a *long* time (last time I saw it was late 90's). They were used a lot for a long time, but the old ring-types requiring terminators and so on have been long gone for twenty-odd years now, replaced with RJ45.
......i saw the title and i instantly clicked like, before seeing dave spinning for joy on a "skateboard" or shopping cart/trolly in the dumpster room!
The original Actels were CPLDs with write-once anti-fuses for programming. From sometime in the late 80s. Claimed to be alpha particle proof, used on Mars rovers according to their blurbs.
There use to be ultrasound machines that had Apple G3 systems integrated into the cart. Very strange beasts to support. Running Mac OS with vendor hardware slapped on. Can't remember the company who made it. Think the Mac portion was more for handling the images. From outside you would never guess a Mac motherboard was hidden inside.
I can see why these devices used to cost so much. After the teardown, what do you do with all these boards? I can't see too many components that are usable in a modern environment.
When I was a kid, my dad fixed devices like this for Datex Ohmeda (senior service rep for BC and the Yukon). I don't know if he did ultrasounds, but there've been EKG, anaesthetic, ventilator machines, etc at our hose for repairs. Sometimes they'd ship to our house, sometimes he'd drive out to them.
You can get some basic ultrasound scanners that are bluetooth and charge wirelessly. They are just the handset, no wire no terminal or even holes in the case just an ipad and a qi charger.
I always figured that the mathematical processing for radar might have a lot in common with that needed for medical imaging. I might be mistaken, but given that Raytheon makes radar equipment, that could explain why a Raytheon chip might show up in medical equipment.
You would have to re-install the software to make it work. The users probably unplugged the machine while powered up and corrupted the software. Pretty common problem. The disks are usually attached to the inside of the side casing in a plastic envelope.