Fluke-196B Software and power adapter. - Page 1
Forum section: electronics / testgear

author: Lachin012
author_rank: Regular Contributor
timestamp: October 23, 2022, 09:24:24 pm
content: Hello! please tell me if there is a program for the Fluke-196B oscilloscope in which you can view the saved waveforms, for example, I took a freeze frame and I want to see it better, how can I transfer the picture to my computer? maybe someone has such a program, and I can download, thanks.Let me ask one more question, about the power adapter, everything works fine, there is a charge, but I noticed such a thing, when the power adapter is connected, there is some noise on the screen, if the power adapter is turned off, the noise disappears, what could be the reason?Not a great video when I connect the power adapter and when I turn it off. Do not pay attention to the flickering of the screen, this is how the camera transmits the picture.I don’t know how to upload a video here, I uploaded a video to another resource, you can watch the video by clicking the link.https://www.veed.io/view/057587d6-033f-44f3-9de5-f79fc90db25c

author: mahi
author_rank: Regular Contributor
timestamp: October 24, 2022, 09:53:51 am
content: Check outScopeGrab32(free / open source). Note that ScopeGrab32 uses screenshots - not actual waveform data. So you can't perform measurements or zoom in on your computer. You can enlarge the picture but it will not reveal more detail.Alternatively you can take a look atSigrok(free / open source). I have never used a ScopeMeter with Sigrok but the 199B is on the list of supported hardware so I see no reason why the 196B wouldn't work.If you want more features, you'll needFlukeView for ScopeMeter Test Tools. Sadly this is not freeware.As for the noise when the power supply is connected, I noticed that you use a switched-mode power supply. I wouldn't be surprised if the noise came from that. The original Fluke BC190 power supply uses a transformer. I'm not seeing much of a difference on a 196C with or without the BC190 plugged in.PS: The voltage of your power supply is on the low side. The original BC190 outputs 17.8V / 840 mA (21 V without load).

author: Lachin012
author_rank: Regular Contributor
timestamp: October 24, 2022, 11:34:31 am
content: Quote from: mahi on October 24, 2022, 09:53:51 am1) Yes, this is just what I need, it’s enough for me to transfer the picture to a computer in order to bury the waveforms for my base.2) I searched on the Sigrok website but could not find this program, could you give a direct link to the Sigrok website program itself, thanks.3) Yes, you are right, this is not the original Fluke adapter, but there were no other options, I had to take what it was, I don’t know yet what kind of ripple at the output of this adapter I will check, I’m sure this adapter is very noisy, but the output voltage without load is 15v . If I could look inside the original adapter and see what's in there, I would build one for myself.

author: Lachin012
author_rank: Regular Contributor
timestamp: October 24, 2022, 11:08:01 pm
content: There is one question, is there a replacement for the 80TK thermocouple, since the native one costs crazy money.

author: asis
author_rank: Frequent Contributor
timestamp: October 25, 2022, 10:04:49 am
content: Hi,Check out the links for answers to your questions.https://www.eevblog.com/forum/repair/fluke-199225c-repair-blown-part-id/msg3957929/#msg3957929----------https://sigrok.org/wiki/Fluke_ScopeMeter_199Bhttps://scopegrab32.sourceforge.net/https://scopegrab32.sourceforge.net/Fluke-RS232-reference.pdfYou will need a PM9080 or OC4USB cable.Or connect directly to the scopemeter's IR transceiver via RS232 (MAX3232TTL !) if you're confident in their actions.

author: mahi
author_rank: Regular Contributor
timestamp: October 25, 2022, 10:37:50 am
content: Lachin012:2)Sigrok downloadsand pick the right PulseView version for your operating system.3) asis already made anexcellent schematicof the Fluke BC190 power supply but for completion I've attached a few pictures.4) If you can't afford the Fluke 80TK, look for for other K-type thermocouple to voltage adapters. Here's a random one I found:K-Type Thermocouple To Voltage Module 0-5V 0-10V(no affiliation, no experience - just the first thing that popped up in a search).

author: Lachin012
author_rank: Regular Contributor
timestamp: October 25, 2022, 01:02:08 pm
content: Thank you for the detailed answers.One question remains, in this thread they write that the transistor is IRFZ44 and the diagram shows IRFZ24, is it really 44 or 24?

author: Lachin012
author_rank: Regular Contributor
timestamp: October 25, 2022, 01:02:43 pm
content: Quote from: mahi on October 25, 2022, 10:37:50 amThank you.

author: Lachin012
author_rank: Regular Contributor
timestamp: October 25, 2022, 01:04:09 pm
content: Quote from: asis on October 25, 2022, 10:04:49 amThank you.

author: Lachin012
author_rank: Regular Contributor
timestamp: October 25, 2022, 02:50:03 pm
content: let me ask one more question, i want to buy original cooling fan, but i can't find it anywhere.

author: mahi
author_rank: Regular Contributor
timestamp: October 25, 2022, 04:32:20 pm
content: Quote from: Lachin012 on October 25, 2022, 01:02:08 pmIRFZ24NQuoteIt looks like the Sunon GB0504AFB3-8 is no longer being manufactured. There's ausedone for sale on eBay (link) but that price... Ouch.

author: Lachin012
author_rank: Regular Contributor
timestamp: October 25, 2022, 07:31:20 pm
content: Quote from: mahi on October 25, 2022, 04:32:20 pmthe price of course is not happy, very high, we will look for something very similar to the native product.https://www.micro-semiconductor.ru/products/Sunon/GB0504AFV1-8.B2493.GN

author: profanum429
author_rank: Regular Contributor
timestamp: October 25, 2022, 10:11:49 pm
content: Quote from: Lachin012 on October 25, 2022, 07:31:20 pmI replaced mine with a Delta AFB0405LA-A (mine was starting to get a bit loud), it's a 40x40x10 fan. It wasn't quite the correct size for the screw holes, but I don't think mine is going anywhere. The header is a Molex 2 pin Mini-SPOX header, 2.50mm pitch. I bought a bare connector and some crimps and crimped it on so I didn't have to cut and solder the old fan I removed.

author: Lachin012
author_rank: Regular Contributor
timestamp: October 28, 2022, 10:45:28 pm
content: 1) Let me ask two more questions, in the oscilloscope menu there is a dB item for what purposes it is needed and in order to use it, do I need some kind of sensor?2) And the second question, about the temperature sensor that was mentioned above, is it possible to use some other simpler one?

author: Lachin012
author_rank: Regular Contributor
timestamp: October 28, 2022, 10:54:23 pm
content: Quote from: mahi on October 25, 2022, 10:37:50 amCould you tell me the size of the power supply board for ordering PCBWAY ?

author: Lachin012
author_rank: Regular Contributor
timestamp: October 31, 2022, 05:59:03 pm
content: Hello, so can someone tell me what dB means and for what purposes is it needed?

author: mahi
author_rank: Regular Contributor
timestamp: November 01, 2022, 11:12:48 am
content: Lachin012:I could open the power supply again and measure the dimensions but I'm not really sure what it is good for. You can't get the Fluke enclosure so what's the point of making the PCB the same size? If you really want to replicate the circuit, get the components, find a suitable enclosure that will fit everything and design a PCB for that enclosure. But honestly, I think you are over-complicating things. You get noise from your switched-mode power supply. Just replace it with a transformer-based one (admitted, these may be harder to find nowadays as pretty much all power supplies are SMPS). If you want to make one yourself, build a circuit around a transformer, full-wave rectifier, 7818 voltage regulator and some smoothing capacitors:Example circuit.Decibel (dB) measurements are voltage measurements on a logarithmic scale and are useful to determine gain and loss (e.g. 3dB gain). There are two modes: dbV and dBm. dBV is a decibel scale relative to 1 volt (1V = 0dBV) and dBm is a decibel scale relative to 1 milliwatt in a 600 ohm impedance (0.775V = 0dBm). The latter is a common unit in audio measurements. Other common impedances are 50 and 75 ohm. Some multimeters allow the user to set a custom impedance for the dBm measurements but I don't think the Fluke Scopemeters support that.

author: Lachin012
author_rank: Regular Contributor
timestamp: November 01, 2022, 08:28:58 pm
content: Quote from: mahi on November 01, 2022, 11:12:48 amThank you for the detailed answer, I have already ordered everything for the transformer power supply, I want to make it as close as possible to Fluke, and therefore I wanted to know approximately the dimensions of the printed circuit board, I will find the case is approximately the same as Fluke's own, maybe a little more, but I need the dimensions of your printed circuit board, if it’s not difficult for you to open your power supply and take the dimensions of your board, I will be very grateful to you. I don’t particularly want to make third-party circuits that can harm my device, so I will make the same block power supply as per the scheme, then I will post a photo here of what happened, thanks.

author: Lachin012
author_rank: Regular Contributor
timestamp: November 01, 2022, 09:58:07 pm
content: I don’t want to offend the author of the circuit, thanks to him for the circuit, but it seems to me that there is an error in the circuit, namely the TL431 control, maybe I’m wrong, but the resistive divider should be on the control and not on the cathode.Could you confirm on the board is TL431 or TL432? maybe I'm wrong about something.

author: mahi
author_rank: Regular Contributor
timestamp: November 02, 2022, 06:11:05 pm
content: Lachin012:The size of the PCB is 89x57 mm.I looked at the SOT-23 package under a microscope but I have a hard time reading what's printed on it. It's clearly ending in 31 (not 32) but the first digit is very poorly etched and hard to read. I think it's a 4 so that would make it 431. A simple diode test seems to confirm it's a TL431 as determined by asis. I did a quick check of the connections to the nearest components and I do believe it's drawn correctly in the diagram.Pay attention to the resistor values. The red values are measured in circuit and not the true value of the component. The 4-digit code is the proper SMD resistor code.

author: Lachin012
author_rank: Regular Contributor
timestamp: November 02, 2022, 08:12:06 pm
content: mahi thank you very much for what you did for me, yes, I paid attention to the red inscriptions, I understand that you don’t need to look at them, but you need to look at the value on the resistors themselves, so I made a mistake about connecting the TL431, it just showed me that Ref must be in place of the cathode and the cathode in place Ref.

author: Lachin012
author_rank: Regular Contributor
timestamp: November 04, 2022, 05:41:40 pm
content: Quote from: mahi on November 01, 2022, 11:12:48 ammahi you explained everything well, but please tell me, what probes should measure dB?