#154

[@raymilgrom6014]

Tony, my LB02A has a -40 microvolt offset on its mV range and a similar offset on volts. Do you (or anyone else) know how to trim this?

[@TonyAlbus]

Hi Ray, that is a good question.. i will Pin it here so it will show in the top. so if someone knows i hope he/she leaves a comment.

[@la7yka]

I also have this one. Well designed case and no plastic feeling. A funny thing is that when using the resistor function in the 20-40 ohm range, my UT61E goes absolutely bananas trying to measure the LB02 resistance. My other multimeters, including the Siglent SDM3045X, measures this without any problems (in fact the 20-100 ohm range is "spot on"). Also the UT61E with an "normal" resistor between 20-40 ohms, works fine too. Perhaps I need to involve a scope in the circuit and look for the reason of the strange behaviour on the UT61E.

[@TonyAlbus]

Yes surprizingly good, i agree.... about the resistor mode, i tried that with the newer UNI-T 161E .. that worked fine.. Video #210

[@clems6989]

@@TonyAlbus A quote from the movie Contact !

[@rosmianto]

Heyy, thanks for the review. Your video showed up just exactly when I'm thinking to buy this calibrator. Great accuracy for the price.

[@TonyAlbus]

My pleasure! , indeed nicely priced for the accuracy you get. Enjoy! Tony

[@YanickT]

On another topic, just seeing your Keithley 177 :) I bought one last week. Used as well lol, I love it. Thanks for the video.

[@TonyAlbus]

Great! .. nice catch!!.. love them

[@grerlab2777]

I was looking for a voltage current reference. Your video allowed me to make an informed choice. I bought the LB02A... Thank you ... much appreciated

[@TonyAlbus]

You are welcome, thanks for your message!

[@erikas6874]

I didn't knew about this little thing before I saw this video (well, in fact the video about the Owon scope first time). Now I can't understand why I don't have it in my lab. This is dangerous, It's the second time I buy something after watching you videos ;) On the other hand, thank you very much for informative reviews :)

[@TonyAlbus]

LOL... yes more people tell me that..sorry :) ... Yes i sometimes run into nice stuff. i can't wait to share ...Thanks for your nice comment.

[@Vcyber-systems]

Hi Tony, Thanks for the excellent review. I just subscribed to your channel.

[@TonyAlbus]

Thanks!

[@robwehrli3243]

Use the STEP button to select the digit and then the staircase buttons to step up or down by the previously selected step digit. I started watching your video to try to figure out how to step to the 0.001 place, which I haven't figured out how to do (and may not be possible).

[@TonyAlbus]

Thanks! that is very useful, i never bothered to read the manual... much faster knowing this now. :)

[@robwehrli3243]

I *tried* reading the manual...and gave up.

[@wiedapp]

I've been looking at these things recently for work, to do trouble shooting and adjusting. I want to simulate actors as well as sensors and to steer electric actuators that require analog signals to function. I'm stuck between the LB06 and the MR9270S+, as sometimes some MODBUS equipment has to be set up and for pre checking such devices these handhelds can come in quite handy.

[@TonyAlbus]

For its price it is very nice... i can not help you on MODBUS.. no experiance in that.. but sounds like you have :)

[@wiedapp]

@@TonyAlbus Well, yes, sort of...

[@FreakCat-wo9qg]

For calibrating and testing with 4-20 mA we need 2 options: 1) Source. That provides power for the loop; 2) Simulative. Mimics the signal without providing power. And if I understand, LB02A doesn't have a Simulative (mimic) mode. Am I correct?

[@TonyAlbus]

Hi, The LB02A has an Active and Passive mode for current.

[@FreakCat-wo9qg]

@@TonyAlbus oh, is that Sink mode?) (passive)

[@TonyAlbus]

@@FreakCat-wo9qg You are welcome, maybe contact the seller for details, i do not use that mode.

[@andreytem9076]

Hi, Tony. Thank You for wery good review. I interesting about: - what the IC in LB02A is a source of reference of voltage? - have You schema of LB02A? - have You methodic calibration of LB02A?

[@TonyAlbus]

Hi Andy.. sorry 3x No... i just compared it to my 6.5 and it is good enough for its price.

[@andreytem9076]

@@TonyAlbusThanks

[@TonyAlbus]

@@andreytem9076 it does not have the range of a real calibrator, but for hobby 3.5 or 4.5 DMM's it is good.

[@andreytem9076]

@@TonyAlbus I think same. But all equipment need maintenance. Need know what real accuracy have calibrator now (may be after half year or year). And, if need correction, make this.

[@myelectronicsworld]

I think your Keithley 199 is off by 300-400 uV :) I am halfway through the video and I suspect you should use the left and right arrows to point to the digit you want to change...

[@TonyAlbus]

Thanks, i will try that!

[@markgreco1962]

Thanks Tony

[@TonyAlbus]

You are welcome Mark!

[@ricardoavidano227]

Gracias por compartir, la simulacion de resistencia de 20 ohms o menos seguramente se ve aumentada por los cables del multímetro. sería interesante ver como cambia la corriente que hace circular el multímetro a diferentes valores de resistencia.

[@TonyAlbus]

Thank you, yes that is indeed very interesting, i keep this question open for one of my Q&A videos Gracias, sí, eso es muy interesante, mantengo esta pregunta abierta para uno de mis videos de preguntas y respuestas.

[@TonyAlbus]

Was thinking of this again and.. i think the current is controlled by the Multimeter, not this device..

[@mnovo]

Subscribed... are you able to reprogram to add more zeros? (Resolution)

[@TonyAlbus]

LB02A is already a lot better then that LB02G, after using the LB02A for a while, it only seemed to get better after is is settled more. this is about the best and multifunction as you can get for this price.

[@mnovo]

@@TonyAlbus But can you add more digits the the display in the LB02A?

[@TonyAlbus]

@@mnovo No

[@kaybhee6]

Tony, wanted to know How accurate this LB-02 was... so, got TWO of them, to test against each other, following the typical government advice of : why buy one, when you can get Two for twice the price.. the idea was to Test the dc voltage DIFFERENCES between the these TWO LB-02, if using the same multimeter and same wires, etc etc. total i used 7 multimeters, from usd 50 to usd 400, ( no flukes, mine are all china brands ), and consistently came to conclusion that the LB-02 was only accurate to certain point. typically differences of + / - 2 mV is common from any test voltage of 0.100 vdc to 11.00 vdc. yes, could not get LB 02a, quick enuff or cheap enough...

[@TonyAlbus]

Thank you for posting your results! I like the 2 for the price of two :))

[@dennisqwertyuiop]

i trust you test equip, before that calibrator.

[@TonyAlbus]

Thank you :)... its not bad for what you pay..

[@xConundrumx]

This looks more like the more expensive LB06, the screen on the LB02 looks like a bog standard LCD. Looks like the TFT screen you get on an LB06.

[@TonyAlbus]

LB06 is indeed more expensive it has a few options extra on the LB02A like heartbeat and some other digital protocols.. but on DCV and DCmA have same accuracy both much better then LB08

[@xConundrumx]

@@TonyAlbus Yeah but you seem to have an LB06 with LB02A markings is my point. All the listings I see for an LB02A show it with a liquid crystal display, this one in your vid has what looks like a TFT (just like the LB06).

[@TonyAlbus]

if you use my item links, you get the same, maybe the pictures are nit good

[@xConundrumx]

@@TonyAlbus Alrighty then. got one on order... My little AD584 reference voltage source died the other day so meh.

[@TonyAlbus]

@@xConundrumx Yes i killed one of mine AD584 too... its easy done..

[@kaybhee6]

tony this seems only dc,,, do u know any ref for ac volts

[@TonyAlbus]

yeps, but not cheap... then you get into the real calibrators....like HP Fluke and stuff.

[@sergeevich9059]

Does anyone know how to fix it? "sink" and "sorce" are not included.

[@TonyAlbus]

Hi, i have not found any hacks or mods for this device.

[@alekszub4341]

good afternoon, tell me this device LB02A can be used as a current loop calibrator, if there is an external network source?

[@TonyAlbus]

Yes it can be active as passive loop

[@alekszub4341]

@@TonyAlbus I mean put this device in the circuit instead of the sensor, the voltage in the circuit is supplied separately.

[@alekszub4341]

@@TonyAlbus kzbin.info/www/bejne/l5u5gGCtiLOtgNk

[@alekszub4341]

@@TonyAlbus as in this video

[@TonyAlbus]

@@alekszub4341 In my description you find the manual

[@clems6989]

I need that shirt....lol

[@TonyAlbus]

Here you are: Tshirt Engineer go.tonyalbus.com/tseng

[@TonyAlbus]

Tshirt 2BeOrNot go.tonyalbus.com/ts2be Tshirt TopSecret go.tonyalbus.com/tstops

[@eduardozambranomelchior1415]

I need one

[@TonyAlbus]

We all need one :))

[@kaybhee6]

LB 78 not too good huh

[@TonyAlbus]

Have not tested LB78 , but LB02A is good.

[@evgent809]

No miracle happened

[@TonyAlbus]

They dont happen to often, thats the thing with miracles

[@585585MC]

teardown or this video it's never existed

[@TonyAlbus]

Yes i think anyone would agree to that.