Products > Test Equipment
Hacking the Victor VC-921
itsthatidotagain:
If anybody has a bit of spare time and wants to hack another DT0660 based meter, they might like to take a look at the
http://www.ebay.co.uk/itm/302325367550?_trksid=p2055119.m1438.l2649&var=601161562576&ssPageName=STRK%3AMEBIDX%3AIT
http://www.ebay.co.uk/sch/i.html?_from=R40&_sacat=0&_nkw=zt+102+multi+meter&_sop=15
AN8002 also known as the ZT102 and the RM102 and others.
This is actually quite a good value and reasonably robust meter.
It differs from the VC912 in that the pads for the COB are not all broken out, so the pins for the IR serial port may not be available.
TheRadioGeek:
Hello all,
I am new to all this software EEPROM stuff and have some questions. I have a VC-921 pocket meter that I would like to change the EEPROM to allow it to be 8000 count and maybe change the auto power off time. I have a Minipro TL866 universal programmer and was able to read the eeprom and get the following. I however don't know what to change to get the above unlocked. Could someone tell me what I need to change and how do you find out what to change and what to change it to when doing something like this.
Thanks
FF FF FF FF FF FF FF FF FF 52 00 FA 00 00 BE 03
A0 0F 68 10 7C 01 6E 50 64 4B 3C 3C 0A FF 40 FF
80 98 F1 81 64 00 96 00 00 80 00 80 00 80 00 80
4E 02 09 58 05 09 1D 04 0B B9 11 0A 7B FF 09 00
00 01 00 01 00 07 98 00 64 00 64 00 64 00 00 00
00 80 00 80 00 80 00 80 00 80 00 80 00 80 00 80
7D 7F 00 83 01 00 81 2A 00 00 00 00 00 00 00 00
08 81 00 80 8A 82 E0 7C 18 01 00 00 00 00 00 00
00 00 00 06 00 00 00 05 00 07 00 0A 12 09 0B 0E
00 00 00 00 00 00 00 0D 00 02 11 0F 00 00 00 15
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0D 00 02 10 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 20
00 80 00 80 00 80 00 80 00 80 00 80 00 80 00 80
3C 7F FF FF FF FF FF FF 5A C7 CC 0F 0F 80 00 00
Rbastler:
In the datasheet of the chipset is everything you need.
You just need to open a .bin file and change it and reflash the eeprom with the changed .bin file. I cant think of other solutions with a TL866.
It got a VC921 too, and this is where I'm stuck atm....
Sent from my A0001 using Tapatalk
TheRadioGeek:
Hey guys and gals,
I got my vc 921 to be a 6000 count meter thanks to the data sheet from http://www.kerrywong.com/2016/04/03/dtm0660-datasheet-translated/ . It's for the dtm0660 chip that this meter has under that blob. I did try to change the auto off time but it gave me an error when I tried to program the EEPROM. I took a screen shot of the programming changes. changes are in RED. The one red one at the bottom was me trying to change the auto off time. It has the default of 0f.
thanks Rbastler
Rbastler:
How did you manage to make the changes in the eeprom ? I cant figure out how. Is it possible right with the tl866 ?
Sent from my A0001 using Tapatalk
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