I run the same test as in
https://www.eevblog.com/forum/testgear/eevblog-121gw-multimeter-issues/msg2819856/#msg2819856 on 2.04.
In short: it is MUCH better now.
I was surprised to find the meter shut off the next day. It seems that it now silently stops logging after reaching 600 000 entries. And them shuts down on Automatic Power-Off feature. Which is better than beeping, but does not help logging data.
There was still one block of zeroes though:
$ grep -a -B 1 -A 1 '^133619,2020' 20021500.CSV | xxd
00000000: 3133 3336 3138 2c32 3032 302f 3032 2f31 133618,2020/02/1
00000010: 362c 3034 3a35 303a 3533 2c44 4356 2c30 6,04:50:53,DCV,0
00000020: 3039 2e30 3835 2c56 2c2c 2c2c 2c2c 2c2c 09.085,V,,,,,,,,
00000030: 0d0a 3133 3336 3139 2c32 3032 3000 0000 ..133619,2020...
00000040: 0000 0000 0000 0000 0000 0000 0000 0000 ................
00000050: 0000 0000 0000 0000 0000 0000 0000 0000 ................
00000060: 0000 0000 0000 0000 0000 0000 0000 0000 ................
00000070: 0000 0000 0000 0000 0000 0000 0000 0000 ................
00000080: 0000 0000 0000 0000 0000 0000 0000 0000 ................
00000090: 0000 0000 0000 3133 3336 3231 2c32 3032 ......133621,202
000000a0: 302f 3032 2f31 362c 3034 3a35 303a 3534 0/02/16,04:50:54
000000b0: 2c44 4356 2c30 3039 2e30 3936 2c56 2c2c ,DCV,009.096,V,,
000000c0: 2c2c 2c2c 2c2c 0d0a 3133 3336 3232 2c32 ,,,,,,..133622,2
000000d0: 3032 302f 3032 2f31 362c 3034 3a35 303a 020/02/16,04:50:
000000e0: 3534 2c44 4356 2c30 3039 2e31 3036 2c56 54,DCV,009.106,V
000000f0: 2c2c 2c2c 2c2c 2c2c 0d0a ,,,,,,,,..
As it has got much better, let's look at smaller issues that were not that important before (but already reported by users above).
Meter still gets stuck for a few seconds. Let's see how often this happened:
1 -59
13 2
365 3
1 4
41 5
14 7
1 9
2 10
3 11
1 13
4 15
3 16
8 17
20 18
3 19
1 21
1 60
The second column is difference between two adjacent entries in the file (-59 seconds, 2 seconds, 3 seconds, ..., 60 seconds), the first column is number of occurrences of this interval.
Here are the largest ones:
26271,2020/02/15,22:46:57,DCV,009.319,V,,,,,,,,
26272,2020/02/15,22:46:58,DCV,009.319,V,,,,,,,,
26273,2020/02/15,22:46:58,DCV,009.319,V,,,,,,,,
26274,2020/02/15,22:46:58,DCV,009.318,V,,,,,,,,
26275,2020/02/15,22:46:58,DCV,009.319,V,,,,,,,,
26276,2020/02/15,22:46:58,DCV,009.318,V,,,,,,,,
26277,2020/02/15,22:46:59,DCV,009.318,V,,,,,,,,
26278,2020/02/15,22:46:59,DCV,009.318,V,,,,,,,,
26279,2020/02/15,22:46:59,DCV,003.392,V,,,,,,,,
26280,2020/02/15,22:46:59,DCV,003.514,V,,,,,,,,
26281,2020/02/15,22:46:00,DCV,003.704,V,,,,,,,,
26282,2020/02/15,22:47:00,DCV,003.818,V,,,,,,,,
26283,2020/02/15,22:47:00,DCV,003.860,V,,,,,,,,
26284,2020/02/15,22:47:00,DCV,003.972,V,,,,,,,,
26285,2020/02/15,22:47:00,DCV,004.013,V,,,,,,,,
26286,2020/02/15,22:47:00,DCV,004.122,V,,,,,,,,
26287,2020/02/15,22:47:01,DCV,004.332,V,,,,,,,,
26288,2020/02/15,22:47:01,DCV,004.383,V,,,,,,,,
26289,2020/02/15,22:47:01,DCV,004.484,V,,,,,,,,
26290,2020/02/15,22:47:01,DCV,004.532,V,,,,,,,,
26291,2020/02/15,22:47:01,DCV,004.630,V,,,,,,,,
26292,2020/02/15,22:47:02,DCV,004.808,V,,,,,,,,
--
74691,2020/02/16,01:30:29,DCV,007.065,V,,,,,,,,
74692,2020/02/16,01:30:30,DCV,007.140,V,,,,,,,,
74693,2020/02/16,01:30:30,DCV,007.185,V,,,,,,,,
74694,2020/02/16,01:30:30,DCV,007.200,V,,,,,,,,
74695,2020/02/16,01:30:30,DCV,007.243,V,,,,,,,,
74696,2020/02/16,01:30:30,DCV,007.259,V,,,,,,,,
74697,2020/02/16,01:30:31,DCV,007.344,V,,,,,,,,
74698,2020/02/16,01:30:31,DCV,007.384,V,,,,,,,,
74699,2020/02/16,01:30:31,DCV,007.398,V,,,,,,,,
74700,2020/02/16,01:30:31,DCV,007.437,V,,,,,,,,
74701,2020/02/16,01:30:50,DCV,009.029,V,,,,,,,,
74702,2020/02/16,01:30:50,DCV,009.031,V,,,,,,,,
74703,2020/02/16,01:30:50,DCV,009.036,V,,,,,,,,
74704,2020/02/16,01:30:50,DCV,009.041,V,,,,,,,,
74705,2020/02/16,01:30:50,DCV,009.047,V,,,,,,,,
74706,2020/02/16,01:30:50,DCV,009.048,V,,,,,,,,
74707,2020/02/16,01:30:51,DCV,009.054,V,,,,,,,,
74708,2020/02/16,01:30:51,DCV,009.059,V,,,,,,,,
74709,2020/02/16,01:30:51,DCV,009.062,V,,,,,,,,
74710,2020/02/16,01:30:51,DCV,009.068,V,,,,,,,,
74711,2020/02/16,01:30:51,DCV,009.072,V,,,,,,,,
--
94311,2020/02/16,02:37:30,DCV,009.019,V,,,,,,,,
94312,2020/02/16,02:37:30,DCV,009.023,V,,,,,,,,
94313,2020/02/16,02:37:30,DCV,009.029,V,,,,,,,,
94314,2020/02/16,02:37:30,DCV,009.034,V,,,,,,,,
94315,2020/02/16,02:37:30,DCV,009.038,V,,,,,,,,
94316,2020/02/16,02:37:31,DCV,009.049,V,,,,,,,,
94317,2020/02/16,02:37:31,DCV,009.052,V,,,,,,,,
94318,2020/02/16,02:37:31,DCV,009.057,V,,,,,,,,
94319,2020/02/16,02:37:31,DCV,009.063,V,,,,,,,,
94320,2020/02/16,02:37:31,DCV,009.065,V,,,,,,,,
94321,2020/02/16,02:37:50,DCV,009.282,V,,,,,,,,
94322,2020/02/16,02:37:50,DCV,009.282,V,,,,,,,,
94323,2020/02/16,02:37:50,DCV,009.283,V,,,,,,,,
94324,2020/02/16,02:37:50,DCV,009.284,V,,,,,,,,
94325,2020/02/16,02:37:50,DCV,009.285,V,,,,,,,,
94326,2020/02/16,02:37:51,DCV,009.286,V,,,,,,,,
94327,2020/02/16,02:37:51,DCV,009.287,V,,,,,,,,
94328,2020/02/16,02:37:51,DCV,009.287,V,,,,,,,,
94329,2020/02/16,02:37:51,DCV,009.287,V,,,,,,,,
94330,2020/02/16,02:37:51,DCV,009.288,V,,,,,,,,
94331,2020/02/16,02:37:52,DCV,009.288,V,,,,,,,,
--
205971,2020/02/16,08:59:08,DCV,008.884,V,,,,,,,,
205972,2020/02/16,08:59:08,DCV,008.889,V,,,,,,,,
205973,2020/02/16,08:59:08,DCV,008.898,V,,,,,,,,
205974,2020/02/16,08:59:08,DCV,008.902,V,,,,,,,,
205975,2020/02/16,08:59:08,DCV,008.912,V,,,,,,,,
205976,2020/02/16,08:59:09,DCV,008.922,V,,,,,,,,
205977,2020/02/16,08:59:09,DCV,008.931,V,,,,,,,,
205978,2020/02/16,08:59:09,DCV,008.939,V,,,,,,,,
205979,2020/02/16,08:59:09,DCV,008.942,V,,,,,,,,
205980,2020/02/16,08:59:09,DCV,008.950,V,,,,,,,,
205981,2020/02/16,08:59:28,DCV,009.262,V,,,,,,,,
205982,2020/02/16,08:59:28,DCV,009.262,V,,,,,,,,
205983,2020/02/16,08:59:28,DCV,009.263,V,,,,,,,,
205984,2020/02/16,08:59:28,DCV,009.264,V,,,,,,,,
205985,2020/02/16,08:59:28,DCV,009.265,V,,,,,,,,
205986,2020/02/16,08:59:29,DCV,009.267,V,,,,,,,,
205987,2020/02/16,08:59:29,DCV,009.268,V,,,,,,,,
205988,2020/02/16,08:59:29,DCV,009.268,V,,,,,,,,
205989,2020/02/16,08:59:29,DCV,009.269,V,,,,,,,,
205990,2020/02/16,08:59:29,DCV,009.271,V,,,,,,,,
205991,2020/02/16,08:59:30,DCV,009.271,V,,,,,,,,
--
350031,2020/02/16,17:06:05,DCV,009.226,V,,,,,,,,
350032,2020/02/16,17:06:06,DCV,009.230,V,,,,,,,,
350033,2020/02/16,17:06:06,DCV,009.231,V,,,,,,,,
350034,2020/02/16,17:06:06,DCV,009.233,V,,,,,,,,
350035,2020/02/16,17:06:06,DCV,009.234,V,,,,,,,,
350036,2020/02/16,17:06:06,DCV,009.235,V,,,,,,,,
350037,2020/02/16,17:06:07,DCV,009.239,V,,,,,,,,
350038,2020/02/16,17:06:07,DCV,009.240,V,,,,,,,,
350039,2020/02/16,17:06:07,DCV,009.240,V,,,,,,,,
350040,2020/02/16,17:06:07,DCV,009.241,V,,,,,,,,
350041,2020/02/16,17:06:28,DCV,009.328,V,,,,,,,,
350042,2020/02/16,17:06:28,DCV,009.309,V,,,,,,,,
350043,2020/02/16,17:06:28,DCV,009.309,V,,,,,,,,
350044,2020/02/16,17:06:28,DCV,009.309,V,,,,,,,,
350045,2020/02/16,17:06:28,DCV,009.309,V,,,,,,,,
350046,2020/02/16,17:06:28,DCV,009.310,V,,,,,,,,
350047,2020/02/16,17:06:29,DCV,009.310,V,,,,,,,,
350048,2020/02/16,17:06:29,DCV,009.310,V,,,,,,,,
350049,2020/02/16,17:06:29,DCV,009.311,V,,,,,,,,
350050,2020/02/16,17:06:29,DCV,009.310,V,,,,,,,,
350051,2020/02/16,17:06:29,DCV,009.310,V,,,,,,,,
The first one looks like a bug in time printing code (human-readable is hard and slow, could we get UNIX time instead?).
Other issues are definitely lost data.
File is attached. It has less than 600 000 entries because I turned it off manually. I had prior (failed) attempt to do logging test that showed me that 600 000 is still the limit.