Analyse DTM1106EN /DTM0660  - Page 1
Forum section: electronics / testgear

author: rafik23
author_rank: Newbie
timestamp: December 20, 2019, 07:46:29 am
content: hiplease can any one has idea about hacking eeprom DT1106EN and for manual range ? examplein data 80H and BFh i found some function what is 2Xh and 3Xh and more DCA and ACA 6 60 600 6000A , i try to anlyse this dumpOffset 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F===============================================00000080: 00 00 24 01 00 22 1A 19 09 0A 0B 21 0C 31 29 2A00000090: 06 05 04 2E 03 30 2C 2B 18 17 16 15 14 1F 1C 1D000000A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00000000B0: 00 00 00 00 00 00 00 00 00 00 00 00 13 20 00 1Eit for pm18C manual range only HZ/% , Capacitor and temperature are in auto ranging , i compare it to bside adm08a without temperature mesuring i see that the 13 at BCh is remplaced by 00h and replace at adresse 9EhOffset 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F===============================================00000080: 05 00 00 24 01 00 22 1A 19 09 0A 0B 21 0C 31 2900000090: 2A 06 05 04 2E 03 30 2C 2B 18 17 16 15 14 13 1C000000A0: 1D 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00000000B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00is there another functions implemented ? we see here 2xh and 3xh format data what are they function assignment ?when i expand data 08h-BFh to 32 we see this00 00 24 01 00 22 1A 19 09 0A 0B 21 0C 31 29 2A 06 05 04 2E 03 30 2C 2B 18 17 16 15141F1C1D00 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 13 20 00 1Ethere are 3 gear switch position what have 2 function redand for bside adm08A (which is the same only w/o °c/°f )00 00 24 01 00 22 1A 19 09 0A 0B 21 0C 31 29 2A 06 05 04 2E 03 30 2C 2B 18 17 16 15 14 13 1C 1D00 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 1EWe can SAY 13 h Continuty 14h for measuring diode and 1F is for °C and 20H for °Fin document of DTM0660 the 14h function is hFE and in this case has two function on gear that conclude for DTM1106 is implemented with another function numberwho has a dump for AN8008 old and NEW or dump for PM18A ?switch gear for pm18CFor Bside ADM08Ato be continuedNB: the DMM is not between my hands

author: rafik23
author_rank: Newbie
timestamp: January 12, 2020, 09:08:33 am
content: After going home i take the multimeter it is a PROSKit MT 1706 and start reading again and again on forums so I decide to teardown it and make an analysis of data stored in eeprom and hack it EEprom from originaly dump appears like thiswe see on its dump no thing extra or strange so i decide to make an excel file to analyse data stored in eepromi take an hexa from editer and past it on data in excel and i see the max range , and all data relative to manufactorI take my old programmer type CH341A and its onboard IC clamp, after more reprise it didnt success reading then i went to solder on PCBand starting reading and modifing data function from 01H to 40H like we see on my older post there is function above 30Hand the result isRANGE Code Func position Hex---------------------------------------600 mVDC 01 08 0360 VAC 0A 08 09600 VAC 0B 08 0A750 VAC 0C 08 0C60 mA DC 29 08 0E 0F AUTO 11600 mA DC 2A 08 0F60K OHM 17 09 09600 OHM 15 09 0BNCV 22 08 056 VAC 09 08 08HLive 24 08 0DHz 1D 8 0FCont 14 8 1C1000VDC 06 9 00600 VDC 05 9 0160 VDC 04 9 0260 A DC 2E 9 036 VDC 03 9 0460 A AC 30 9 05600mA AC 2C 9 066 M OHMS 19 9 07600KOHMS 18 9 086K OMM 16 9 0A° C 1F 9 0DHfe 21 9 0EDiode 13 9 1C600 mVAC 08 7 AUTO 3360MOHM 1A600MOHMS 1BCap 1C% 1E°F 20600 uA DC 25 0D AUTO6 mA DC 26600 uA AC 27 0E AUTO6 mA AC 2860 mA AC 2B 10 AUTO6 A DC 2D 11 AUTO6 A AC 2F 12 AUTO 3660 uA DC 3160 uA ACINFO the function is mentioned in right is the same range in AUTO modeafter this i change max range to 9999 count and over range OL is 10000after this i try to add some button like REL/RS232 and other but nothing hapened when switching.I think for automatic ranging there is something added on data in the header of eepromExample : we seeit not described on DTM0660 datasheetso i add on some range the same range in automode but i discover only Amper range can be in auto mode ( no volt no Ohms )here is structure of 80h and BFh0x80H 00 00 24 01 00 22 1a 19 09 0a 0b 21 0c 31 29 2a 06 05 04 2e 03 30 2c 2b 18 17 16 15 14 1f 1c 1d0xA0H 00 00 00 07 00 00 00 00 00 00 00 00 00 0d 0f 00 00 00 00 00 00 00 00 10 00 00 00 00 13 20 00 1eI have added600mvAC on 600mvDC (not modified but ADDED)60mADC AUTO on 60 mA DC60mADC AUTO on 60 mA DC600µADC AUTO on 60µA DCthat's allany other suggestions ?