Products > Test Equipment
A look at the Uni-T UT210E
jayjr1105:
--- Quote from: Kean on April 07, 2018, 07:40:36 pm ---
--- Quote from: jayjr1105 on April 07, 2018, 05:13:52 pm ---Also remember to replace the calibration data from YOUR dump. Otherwise you will have my calibration data.
--- End quote ---
Suggestion: change the code that set 0x56 and 0x57 as follows so that they copy direct from 0x50 & 0x51, rather than using hardcoded values.
//Dotless mode calibration data, copied from 0x50, 0x51
writeByte(I2C_ADDR, 0x56, readByte(I2C_ADDR, 0x50));
writeByte(I2C_ADDR, 0x57, readByte(I2C_ADDR, 0x51));
I wonder if any other bytes can be examined to determine the chipset to selectively run the 0660/1106 specific code?
I haven't yet opened up any of my 3 units to do this or see what chips I have... but soon!
--- End quote ---
I think people like to have their original dump as a backup. But otherwise, you may be on to something with the direct copy and chipset detection. However, I think eeprom dump is identical from both chipsets (minus the calibration bits)
Don't solder to pin 55 (small SMD cap near chipset) btw. Just probe it. I lost 1 meter from it tearing the pad off.
Edit: Now that I think of it, you should still get an original dump as log as you have the serial monitor window open. I'm not certain about this code working however...
--- Quote ---//Dotless mode calibration data, copied from 0x50, 0x51
writeByte(I2C_ADDR, 0x56, readByte(I2C_ADDR, 0x50));
writeByte(I2C_ADDR, 0x57, readByte(I2C_ADDR, 0x51));
--- End quote ---
Martini:
--- Quote from: maginnovision on April 07, 2018, 07:42:03 pm ---
--- Quote from: Martini on April 07, 2018, 05:15:33 pm ---I would have thought an accuracy of a few dozen amps was enough to troubleshoot a car.
--- End quote ---
Well, you learn something new everyday.
--- End quote ---
Milliamps, I meant milliamps!
jayjr1105:
Who knew? My cheap UTL (UEI) UTLDM2 is also a 0660 chip!
Not much to mod, brought it from 6000 to 8000 count and extended backlight and auto power-off + disabled alarms.
A tiny bit harder as you have to solder to the legs of the eeprom chip itself. Nothing too difficult...
Ultrawipf:
Also did the eeprom mods to my ut210e.
6200 Counts works fine, the lower switch point must be changed too as mentioned before. Some interesting stuff in the datasheet.
0x14 -> 0x44
0x15 -> 0x02
I hoped to add Hz measurements to some functions, but this must be set using hardware links i think.
The most interesting thing is the ncv function. I added AC and DC mV measurements. The DC function is not very practical, but you can measure strong static fields. Very interesting.
0x9C -> 0x02 for AC mV ncv
0xAC -> 0x01 for DC mV ncv
The AC mV Function mentioned in the original post is awesome to locate cables and noise sources. Much better than the old 4 bar ncv function :)
You can add up to 4 measurements per function. But sadly not a Hz or Duty Cycle measurement directly via eeprom settings. If someone has any idea if it might be possible anyways let me know.
jayjr1105:
--- Quote from: Ultrawipf on April 09, 2018, 07:35:50 pm ---Also did the eeprom mods to my ut210e.
6200 Counts works fine, the lower switch point must be changed too as mentioned before. Some interesting stuff in the datasheet.
0x14 -> 0x44
0x15 -> 0x02
I hoped to add Hz measurements to some functions, but this must be set using hardware links i think.
The most interesting thing is the ncv function. I added AC and DC mV measurements. The DC function is not very practical, but you can measure strong static fields. Very interesting.
0x9C -> 0x02 for AC mV ncv
0xAC -> 0x01 for DC mV ncv
The AC mV Function mentioned in the original post is awesome to locate cables and noise sources. Much better than the old 4 bar ncv function :)
You can add up to 4 measurements per function. But sadly not a Hz or Duty Cycle measurement directly via eeprom settings. If someone has any idea if it might be possible anyways let me know.
--- End quote ---
Which chipset do you have in your 210E?
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