The MS8911 is an amazing product for its price point - it strikes an impressively good balance between quality, features, and price. They did a nice job.They needed to as their previous product was a POS even compared to my now ancient ST3 from 2007.
I've seen a few rave about the later 8911 but maybe they have never used an A brand SMD tweezer.
Shannon knows what's required and will likely present us with a top class product.
I have never used anything better than the 8911, but I have used worse!come on, you are wealthy SilverSolder, and we are SnPbSolder
try to change your taste once in a while, the steak is delicious, even the bread could make you full
Shannon
Have you decided on a warranty scheme ?
Are you ready to show a simple video of your tweezers in use ?
I'm very glad to see this thread progress, and hold my fingers that indeed this will turn out to be a good instrument in both accuracy and user experience. Personally, I think an instrument with good accuracy and UI that has repeatable and reliable results over time is much better than one with excellent accuracy that sacrifices UI or long term stability (like the UT61E which I've measured over time and seen it drift out of spec quite quickly ).
Good job Shannon for the work so far, including being open to so much feedback from the people here on the forum. It can be difficult to come up with something that will make everyone happy (probably impossible ) with everyone pulling to a different direction. So far it seems to be on the right track of finding the common ground without pushing size/price too far.
I will definitely keep watching this thread to see what you come up with and how/when it will be available.
Looking good !
Can you make it sense a diode in Auto mode so to not have to select Diode mode ?
There also seems room on the display to place a Vf diode measurement, can we do that with the current levels of excitation ?
Looking good, you are the artists!
I only noticed one bug: "Cancel" only has one L (not CANCELL, but CANCEL)
Too early to demo the Beep on Capture in the Hold function?
nice !
just the esr values when you measure capacitors seems odd to me ?
Looking good, you are the artists!
I only noticed one bug: "Cancel" only has one L (not CANCELL, but CANCEL)
Too early to demo the Beep on Capture in the Hold function?Thanks SilverSolder
we will modify the CANCELL definitlly.
For the beep on capture in the hold function is too early, I'm a little confused about your comments.
We have implemented a simple hold function at present, the value would hold when the tips leaving DUT as the video shows, and it shows the stable value before leaving DUT. Test speed of these tweezers is much faster than the other, so the user experience is not bad.
more smart processing method as you said, we have recorded this function and would consider about that
Looking good, you are the artists!
I only noticed one bug: "Cancel" only has one L (not CANCELL, but CANCEL)
Too early to demo the Beep on Capture in the Hold function?Thanks SilverSolder
we will modify the CANCELL definitlly.
For the beep on capture in the hold function is too early, I'm a little confused about your comments.
We have implemented a simple hold function at present, the value would hold when the tips leaving DUT as the video shows, and it shows the stable value before leaving DUT. Test speed of these tweezers is much faster than the other, so the user experience is not bad.
more smart processing method as you said, we have recorded this function and would consider about that
I am not one to make the "perfect" the enemy of the "good", the hold function is already much better than anything else I've seen.
Given how the readings can wander up and down while probing, it may be better the way you have done it (i.e. leave it to the user to determine when a reading is valid, by "letting go" of the component)
Keep up the nice work, this is looking good, including the work you have done on making the tweezer stable and accurate mechanically - I agree, the cheaper testers can be a little difficult to use for manipulating small parts (even if they work fine on component that are soldered in a circuit).
3/4. D/Q mode is supported, which need go to measure menu and select R mode or Q/D mode, as 2 and 3 attached@Shannon, I would like to see these parameters not through menu selection, but in automatic mode, which you demonstrated.
Shannon [/ b], I'm sure you will show all these modes in the next video?
Looking good !
Can you make it sense a diode in Auto mode so to not have to select Diode mode ?
There also seems room on the display to place a Vf diode measurement, can we do that with the current levels of excitation ?Thanks tautech
we really want to implement this feature, but to be honest, it's another feature need balanced.
sometimes, we would use these LCR tweezers to measure PCBA components, such as the cap on the power rail, which would git rid of the influence of the internal equivalent diode of IC. So if auto mode select the diode mode, the result would be the diode forward voltage
the test method for the diode is a DC current excitation, in principle, we could use DC current to test the DUT and justify it's a diode or not, and if not, we use AC excitation signal to test the L/C/R.
but there are some bad case need to process
1. A diode parallels with a large-cap, it would cost much time to charge this cap firstly, and then to justify this is a diode or not.
2. if the DUT is an MLCC, the DC voltage would have an influence on the cap value
3. High forward voltage diode such as LED would lead to more uncertainty for the test mode.
at least, we will try to optimize the hotkey sequence to make diode mode is easy to be selected
Sure, we will add the forward current information for the diode test
Can we get the measuring voltage down to 100mV? That is a Yuuuuuge feature of the Mastech, that makes it possible to measure things in-circuit without triggering any silicon junctions.