It's the nature of the DC clamp.. 200mA does seem a bit high. I've posted about how to trim the pots and degauss them if things get really bad to where you can't zero them. Assuming the meter reads correctly as you sweep the current, I would just leave it.
Does it work fine with NiMh rechargeable batteries?
FF FF FF FF FF 00 80 B0 04 E8 03 FA 00 00 BB 03
70 17 98 08 C3 00 3D 3D 3C 3C FF 16 14 FF 40 FF
26 98 19 81 AD 00 96 00 00 80 17 80 FB 7E 38 75
4E 02 09 F3 01 09 1D 02 0B AE 15 0A EB 00 0A 00
00 01 00 01 00 07 98 00 64 00 64 00 64 00 00 00
C2 92 E3 77 78 7D AB 7D 00 00 00 00 F7 FF 00 00
E4 7F 2E 7F 01 00 AD 2A 00 00 00 00 00 00 00 00
A1 7F 00 80 23 7F E0 7C 79 06 00 00 00 00 00 00
00 00 00 00 00 00 00 18 00 00 00 19 13 1E 04 07
00 00 00 00 00 00 00 00 00 00 00 00 15 00 1F 09
00 00 00 00 00 00 00 00 00 00 00 00 00 00 05 0A
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0B
0D 00 02 30 0D 00 03 20 20 00 03 20 20 00 03 10
41 00 03 08 41 00 03 05 41 00 03 05 0D 00 02 30
00 80 00 80 00 80 00 80 00 80 90 01 BC 02 E8 03
90 01 BC 02 E8 03 00 80 5A C7 EF 0F 0F 80 00 00
miksu,the DTM0660 chip also has the firmware which differs for each specific model of the instrument.
miksu,the DTM0660 chip also has the firmware which differs for each specific model of the instrument.Yea I was kind of hoping they would use the same layout and firmware, or at least leave some extra functionality in there but so far there is nothing. Now I wonder what would happen if you'd transplant a fully featured chip or firmware from another multimeter
I don't need better than 2000 count resolution and the accuracy..........
I don't need better than 2000 count resolution and the accuracy..........U need it so do it.
Check out Joe's channel, than you understand why you have to hack it. )
Anyone willing to test two new eeprom mods? It gives two new functions in 2A mode. Its reported on the Russian site that these functions still have the full count even after zeroing out (i.e. doesn't go back to 2000). The LCD does not show a "." in the read out.
Update: Tested the DCA 0000 function in 2A and it truly works even after zeroing out.Code: [Select]old new
A7: 00 1C - DCA 0000 in 2A mode / SELECT slot 3
B7: 00 1D - ACA 0000 in 2A mode / SELECT slot 4
I did some earth leakage tests with mine. Seemed stable enough to see what was going on. I made a short extension cord with the earth wire long enough to pass through the clamp centre 10 times for X10 sensitivity.
Hey guys, in case it hasn't been covered, does this clamp (not modded) give true RMS readings in the AC milliamp range,
or only applicable to the volts input?
How well does it work from 0 to 100 ma AC? solid readings or 'all over the shop' ?
I want to pull the trigger on a cheap small clamp to hunt down electrical earth/ground leakage issues that trip RCD/GFCIs etc.
My other leakage clamp works great but it's a monster to lug around and use when travelling light on small jobs.
I suppose asking if UT210E does min/max is pushing the expectations for such a low price?
and hey, it's a Uni-T, so I gotta ask if it's a goodie, or borderline sledge worthy
yeah, I got that in my bag of tricks too
My other clamp leaker reads any AC waveform straight up from 0.300 ma to 30 amps rock solid
But I'd be cool with anything small that does 5 ma to 100 ma AC, without digit walkabout...
Anyone willing to test two new eeprom mods? It gives two new functions in 2A mode. Its reported on the Russian site that these functions still have the full count even after zeroing out (i.e. doesn't go back to 2000). The LCD does not show a "." in the read out.
Update: Tested the DCA 0000 function in 2A and it truly works even after zeroing out.Code: [Select]old new
A7: 00 1C - DCA 0000 in 2A mode / SELECT slot 3
B7: 00 1D - ACA 0000 in 2A mode / SELECT slot 4
Hi , I finally picked a 210E , having read this thread a while back and thanks to FlyWheelz's pic of the Hookup and his .ino file , I now have a Modded 210E .
However I noticed the post above has different hex codes for A7 and B7 than the .ino so I am wonder if the INO was ever updated so it's correct or I need to make these changes too ? though looking at the INO or the post on page 8 these addresses seem to be for the ALARMS , not for adding modes to 2A mode ?
Earlier in the thread on Page 4 I also notice some of Macboys' changes are different than Flywheelz too...or was that just personal preference?
Did I perhaps miss something on the thread ? or was there a finalized list of recommended Changes perhaps?
Thanks for any help....
KB
Anyone willing to test two new eeprom mods? It gives two new functions in 2A mode. Its reported on the Russian site that these functions still have the full count even after zeroing out (i.e. doesn't go back to 2000). The LCD does not show a "." in the read out.
Update: Tested the DCA 0000 function in 2A and it truly works even after zeroing out.Code: [Select]old new
A7: 00 1C - DCA 0000 in 2A mode / SELECT slot 3
B7: 00 1D - ACA 0000 in 2A mode / SELECT slot 4
Hi , I finally picked a 210E , having read this thread a while back and thanks to FlyWheelz's pic of the Hookup and his .ino file , I now have a Modded 210E .
However I noticed the post above has different hex codes for A7 and B7 than the .ino so I am wonder if the INO was ever updated so it's correct or I need to make these changes too ? though looking at the INO or the post on page 8 these addresses seem to be for the ALARMS , not for adding modes to 2A mode ?
Earlier in the thread on Page 4 I also notice some of Macboys' changes are different than Flywheelz too...or was that just personal preference?
Did I perhaps miss something on the thread ? or was there a finalized list of recommended Changes perhaps?
Thanks for any help....
KB
The post above one you quoted, the one with .ino, is more recent. I made the 2A dotless modes be in SELECT slot 1 and 2 and the original modes shifted to slot 3 and 4. The other differences could be with alarms snd timeouts, these are personal preferences.
Did you ever try using Pin 8 for WP like Kerry Wong did in his sketch ? it worked fine when I modded my Uni-T 139C,
after my initial wiring error admittedly as I had WP to GND at 1st and was getting the beeping.
https://www.eevblog.com/forum/testgear/uni-t-ut139c-lcd-biasing-(schematics-avail)/msg1165035/#msg1165035
Did you ever try using Pin 8 for WP like Kerry Wong did in his sketch ? it worked fine when I modded my Uni-T 139C,
after my initial wiring error admittedly as I had WP to GND at 1st and was getting the beeping.
https://www.eevblog.com/forum/testgear/uni-t-ut139c-lcd-biasing-(schematics-avail)/msg1165035/#msg1165035
Yes, I tried Pin 8 to ground but that alone was not enough for my UT210E to be able to Write eeprom (maybe read too, can't remember ). After few rewirings, I realized the MCU was waking up and screwing things up, so grounding its reset pin 55 did the trick On 139C there is a nice Reset pad.