Test Equipment Anonymous (TEA) group therapy thread

[tonyalbus]

Guess the TTi ws not to far off ;-)

Was fun, easy setup easy lock...

The TTien are much more picky on the 10seconds measurement period. If it's still a 1 with a lot of zeroes then, colour me impressed. My TF830 is pretty close, but not quite on 10 seconds.

10 Sec... you are right.. i noteced olso..
i looked in the docs and it is prob. becouse calibration is done, not by a cap-trimmer for all gatetimes, but by the buttons on the front, and this process needs to be done on EACH gate setting.
in de docs they say.. 10sec is not nessesery???
----
Set the Measurement Time to 10s and wait for the measurement to complete (Measure stops
flashing and an extra digit appears). Check that the reading is within ±0.05ppm (0.5Hz), making
further adjustment if needed (waiting for Measure to stop flashing after each adjustment). Each
key press moves the oscillator about 0.002ppm (2 counts in the last digit).
Although the calibration value can be set to this precision, this is more accurate than is
necessary, considering the medium term stability of the oscillator. The initial accuracy is specified
at ±0.2ppm on despatch from the factory, but after a unit has aged for a year or more, it is
reasonable to set the calibration value to within ±0.05ppm. This is typical of the variation over
normal room temperature changes during the course of a day.
---

[Saskia]

@mansaxel Thnx for the insightful remarks on DNS. It's been a while since I actively ran domains on my own. I may pick it up again, though, and just configure something on Freebsd or netbsd to be on the safe side (I don't trust Linux, and I trust Windows even less).

[bd139]

You gain performance, security and geographical caching

because a request to the DNS root server takes more time than the one to Google DNS?
Why it is always so complicated? 

It's fairly simple. Google are a caching forwarder so they do all the legwork behind the scenes and cache it for you. That means there's only one round trip to get an answer rather than lots of finger pointing and referral. And that round trip is automatically close to you.

There's a lot of misconfigured shit out there as well which you don't want to have to deal with and it's not always at your end. An example: recently a large well known fintech here spent a month with flapping DNS due to a zone replication failure on their primaries. This was a nightmare because they had split horizon DNS so it worked from within their network fine and denied everything. When it's you vs the other guy problems never get resolved. When you have a third party in your DNS chain who are arguably more competent (Google) then it's easier to tell them they are shit.

It's not all technical. Some times it's political.

[Zucca]

Now that we know Saskia remarkable background, you bd are mysterious as well, in a good sense.

My guesses are you were always attracted by eletronics since you were born, and like to know why stuff is not working properly because you are interested to see what are the design mistake behind the scene.

[psykok]

Today an other Tek hit my bench 
This 2440M is in mint condition and with all manual.


The fpp test is failing, apparently it could just be related to the close battery. Otherwise the scope is working.

[BU508A]

I've received an email from the seller where I've bought my RTB2004.
They have some nice gear offered which has been used previously in a show-room ("Vorführgerät" in German)

No affiliations with the seller besides being a happy customer.

https://allice.de/rohde-schwarz-vorfuehrgeraete-allice-messtechnik-hameg/

[Zucca]

Today an other Tek hit my bench 
This 2440M is in mint condition and with all manual.
(Attachment Link)

The fpp test is failing, apparently it could just be related to the close battery. Otherwise the scope is working.

You should first finish the 465 and then start with a new one... Oh How many project do I currently have in the works? About 32-35... but right now all I want to do is to understand the DNS show. 
Sometime I get focused on something and I cannot think about anything else.

[med6753]

Today an other Tek hit my bench 
This 2440M is in mint condition and with all manual.
(Attachment Link)

The fpp test is failing, apparently it could just be related to the close battery. Otherwise the scope is working.

But if you lose the battery completely you may lose all calibration data which would be a bad thing. Does it utilized a Dallas chip or separate NVRAM battery?

[psykok]

Today an other Tek hit my bench 
This 2440M is in mint condition and with all manual.
(Attachment Link)

The fpp test is failing, apparently it could just be related to the close battery. Otherwise the scope is working.

You should first finish the 465 and then start with a new one... Oh How many project I have to finish? About 32-35 but right now all I want to do is to understand the DNS show. 
Sometime I get focus on something and I can not think about nothing else.

You know starting a new project is always exciting.
The 465 is working again. I already cleaned the front. I'm waiting for  a new knob to replace the broken one.

The 2445A is on hold, I'm waiting for parts.

I already checked all the 8640A and they are working amazing well. One of them has already found a new home by a friend of mine.

My bench is indeed full of gears but all of them are the way to be finished.
The only one I'm struggling with is the 5340A, I have not been able to understand what is failing and why it's not counting.

[Zucca]

https://allice.de/rohde-schwarz-vorfuehrgeraete-allice-messtechnik-hameg/

Is this LCR fixture compatible with all LCR Meter with 4 coax?
EDIT: Yes it is the same


vs


 

I have my HP LCR 4263B which may need it....

[mansaxel]

It's not all technical. Some times it's political.

I spent a year running redelegations for .SE, back in the day when they were done by hand (literally $EDITOR in the zone file!). I think I know what needs to be known about name server politics 

Before that I'd spent a year running the internal DNS at a very large swedish telecom manufacturer, the company who actually started RIFA as a subsidiary. (TE connection!)

Then I spent a bunch of years teaching DNS inner workings at university, in programs that I couldn't have attended, for lack of qualifications... 

My most valuable tool when resolving (heh) DNS problems  at work is my own server sitting in a colo completely unrelated to work compute and network resources.  It provides me with a neutral look at what people are seeing from our servers and the services (some are anycast, some are mystical cloudish things) we make use of to have a very resilient DNS service.

Second most valuable of course is a desktop machine in the corporate network, running OpenBSD, that has all the debug tools needed to understand what's being served and how internally.

[Zucca]

For the German TEA hunters:

https://www.ebay-kleinanzeigen.de/s-anzeige/elektronik-bauteile-werkstattaufloesung-/1415084576-168-5137

[Ice-Tea]

RIFA Emergency Repair KIT (RIFER Kit)

[Brumby]

RIFA Emergency Repair KIT (RIFER Kit)

Now there's something every TEA member should have in their box of tricks!

[McBryce]

I've received an email from the seller where I've bought my RTB2004.
They have some nice gear offered which has been used previously in a show-room ("Vorführgerät" in German)

No affiliations with the seller besides being a happy customer.

https://allice.de/rohde-schwarz-vorfuehrgeraete-allice-messtechnik-hameg/

Not that you need any improvement to your English, but just for clarity, Vorführgerät in english is called a "Demonstration unit" or "Demonstrator".

McBryce.

[Zucca]

More than 14 years living here in Germany, and yet the german precision always surprise me.

[Mr. Scram]

Now that we know Saskia remarkable background, you bd are mysterious as well, in a good sense.

My guesses are you were always attracted by eletronics since you were born, and like to know why stuff is not working properly because you are interested to see what are the design mistake behind the scene.

Curiosity killed the cat.

[BU508A]

I've received an email from the seller where I've bought my RTB2004.
They have some nice gear offered which has been used previously in a show-room ("Vorführgerät" in German)

No affiliations with the seller besides being a happy customer.

https://allice.de/rohde-schwarz-vorfuehrgeraete-allice-messtechnik-hameg/

Not that you need any improvement to your English, but just for clarity, Vorführgerät in english is called a "Demonstration unit" or "Demonstrator".

McBryce.

Thanks for the flowers. 
Honestly, I was too lazy to check LEO for the correct word and "demonstration unit" didn't cross my mind.     

Thanks for the clarification. 

[Neomys Sapiens]

Having had it a year earlier would have been beneficial even for my company work. Providing proof of GPS PPS pulse variations? A simple setup task.

On my to-do list is to use my HP53301 modulation domain analyser / time interval analyser to do just that.

If you have a modern frequency/interval counter, it might be possible to persuade it to measure intervals.

It's not that trivial. All my counters can measure intervals. (HP5335, DC503A, DC509).
But if you can provide duch data in the form the TVC501 provides  (time interval deviation over time), and having the possibility to include other signals on the other traces of a scope, which might correlate with that, could speed up the argumentation considerably.
(Except if you were referring only to the really modern counters, like the Pendulum or yours. Those have that capability or can provide the information in comparable form.)

[mnementh]

    RIFA Emergency Repair KIT (RIFER Kit)

Neat... a kit offered from a supplier, or just your own BOM in a cute blue box...? Good price...?

Back in the day, my local supplier (Corning Electronics, now long since defunct) offered volume discounts on discretes, but the entire BOM applied to the minimum as long as line items were in x10 or x20 or x100 quantities. That made it really nice when you were trying to build your own "kits"; in fact I suspect they started doing it for .edu customers.

*sigh*

mnem
Remember when "Customer Service" was more than just a buzzword...?

[Ice-Tea]

Just a Farnell order. Much of their orders come in these blue boxes.

[McBryce]

I've received an email from the seller where I've bought my RTB2004.
They have some nice gear offered which has been used previously in a show-room ("Vorführgerät" in German)

No affiliations with the seller besides being a happy customer.

https://allice.de/rohde-schwarz-vorfuehrgeraete-allice-messtechnik-hameg/

Not that you need any improvement to your English, but just for clarity, Vorführgerät in english is called a "Demonstration unit" or "Demonstrator".

McBryce.

Thanks for the flowers. 
Honestly, I was too lazy to check LEO for the correct word and "demonstration unit" didn't cross my mind.     

Thanks for the clarification. 

Shit, if my wife finds out that I gave you flowers, then I'm in serious trouble. Can you give them back please so that I can re-distribute them?
(Ich habe die sowieso an der Tankstelle gekauft )

McBryce.

[bd139]

OMG several hours of arguing and I have a working media PC. Lenovo M600 does support DisplayPort audio, just not with 2 of the three cables I had. I found one that worked eventually. Have installed LibreElec / kodi on the internal SSD and bought a £12 media keyboard off amazon and connected it to the media fileshare on my desktop. Works fucking perfectly, 100% fanless, reliable. Woohoo!

[Zucca]

I feel for you bd,

I setup the entire afternoon a OpenVPN server in my pfSense box. Finally I won!

Now the next problem, my shit Win10 workhorse after the install of a Seagate Ironwolf 8TB Disk sporadically take 5-10 minutes to shut down. 

[Saskia]

I'll gladly take that 8TB disk off your hands