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- Опубликовано: 8 сен 2024
- Amazed by all the options, its almost a full calibrator.
LB02A Manual: www.tonyplaza....
Voltage ref go.tonyalbus.c...
Voltage ref go.tonyalbus.c...
Voltage ref pcb go.tonyalbus.c...
Volt/Current Pro LB02A go.tonyalbus.c...
Voltage/Current LB02G go.tonyalbus.c...
Voltage/Current LB02G go.tonyalbus.c...
LCR standard go.tonyalbus.c...
Tshirt Engineer go.tonyalbus.c...
#LB02A #LB02G #LB02
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?
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.
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 :)
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.
Heyy, thanks for the review. Your video showed up just exactly when I'm thinking to buy this calibrator. Great accuracy for the price.
My pleasure! , indeed nicely priced for the accuracy you get. Enjoy! Tony
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).
Thanks! that is very useful, i never bothered to read the manual... much faster knowing this now. :)
I *tried* reading the manual...and gave up.
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
You are welcome, thanks for your message!
On another topic, just seeing your Keithley 177 :) I bought one last week. Used as well lol, I love it. Thanks for the video.
Great! .. nice catch!!.. love them
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.
Yes surprizingly good, i agree.... about the resistor mode, i tried that with the newer UNI-T 161E .. that worked fine.. Video #210
@@TonyAlbus A quote from the movie Contact !
Hi Tony, Thanks for the excellent review. I just subscribed to your channel.
Thanks!
Thanks Tony
You are welcome Mark!
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.
For its price it is very nice... i can not help you on MODBUS.. no experiance in that.. but sounds like you have :)
@@TonyAlbus Well, yes, sort of...
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...
Thank you for posting your results! I like the 2 for the price of two :))
i trust you test equip, before that calibrator.
Thank you :)... its not bad for what you pay..
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.
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.
Was thinking of this again and.. i think the current is controlled by the Multimeter, not this device..
Subscribed... are you able to reprogram to add more zeros? (Resolution)
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.
@@TonyAlbus But can you add more digits the the display in the LB02A?
@@mnovo No
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...
Thanks, i will try that!
tony this seems only dc,,, do u know any ref for ac volts
yeps, but not cheap... then you get into the real calibrators....like HP Fluke and stuff.
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.
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
@@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).
if you use my item links, you get the same, maybe the pictures are nit good
@@TonyAlbus Alrighty then. got one on order... My little AD584 reference voltage source died the other day so meh.
@@xConundrumx Yes i killed one of mine AD584 too... its easy done..
I need one
We all need one :))
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?
Hi Andy.. sorry 3x No... i just compared it to my 6.5 and it is good enough for its price.
@@TonyAlbusThanks
@@andreytem9076 it does not have the range of a real calibrator, but for hobby 3.5 or 4.5 DMM's it is good.
@@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.
I need that shirt....lol
Here you are: Tshirt Engineer go.tonyalbus.com/tseng
Tshirt 2BeOrNot go.tonyalbus.com/ts2be
Tshirt TopSecret go.tonyalbus.com/tstops
Does anyone know how to fix it? "sink" and "sorce" are not included.
Hi, i have not found any hacks or mods for this device.
good afternoon, tell me this device LB02A can be used as a current loop calibrator, if there is an external network source?
Yes it can be active as passive loop
@@TonyAlbus I mean put this device in the circuit instead of the sensor, the voltage in the circuit is supplied separately.
@@TonyAlbus ruclips.net/video/ajVO-wSNzJw/видео.html
@@TonyAlbus as in this video
@@alekszub4341 In my description you find the manual
LB 78 not too good huh
Have not tested LB78 , but LB02A is good.
teardown or this video it's never existed
Yes i think anyone would agree to that.