The Bside ADM08A appears to use the same DM1106 chip, and has 4 current ranges...
I think DM1106EN and DTM0660 are the same chip, someone reported that Uni-T UT210E already changed the chip to DM1106EN last year.
The real name of the chip should be Hycon HY12P66. Hycontek just sell the customized chips to their customers.
I modified my AN8008 to provide single digit mA readings with 3 digit resolution. I replaced the regular mA/A readings with the ability to measure currents below 100 mA with a XX.XX mA display. Currents below 1A are measured with the same XXX.X mA display. 1A is now the maximum current which can be measured.
I replaced the 0.01 ohm shunt resistor for the A/mA jack with a 0.10 ohm 0.5% resistor which I had in stock. Attached is a picture of the upgraded meter measuring 2.5000 mA current. On the left the meter is in the uA position, the test lead is in the A/mA jack and the meter reads 2.59 (uA) [3.6% high]. On the right I've switched to the mA position but the reading has gone down to 21.9 (mA) [12.4% low]. I obviously haven't corrected the position of the decimal. Remember, the actual current through the meter is 2.5 mA is both cases.
About a 0.12 ohm resistor will correct the magnitude of the of the reading when the meter's switch is in the mA position. But, I prefer having the decimal point in the correct position. Being in the A/mA jack will remind me that mA is the actual display units. I might purchase some 0.10 ohm resistors with less precision hoping to get one a bit low in value which will improve the mA reading's accuracy when the meter's switch is in the uA position.
BTW, ADM08A sells for 18-19 USD and it's much solidly build than AN8008....
Maybe irrelevant but the DTM0660 chipset (used in the AN8002) only has calibration data for 3 different current ranges.
eg. https://github.com/pingumacpenguin/DTM0660-flasher-arduino-sketch/blob/master/STM32-DTM0660-24c02-Updater.ino
BTW, ADM08A sells for 18-19 USD and it's much solidly build than AN8008....
I've got the Peak Meter branded version of that (the PM18C) and it's a pretty nice meter that works well. But I doubt it would appeal at all to the AN8002/8008 audience; it's about four times the size and manual ranging.
The Hz position seems to need typically 100mV input to reach 1.8 Mhz. To reach 9.99 Mhz a 900mV input just made it. I did not want to increase the input level further and find it difficult to see how it could reach the 80Mhz that Mark Hennessy referred to. The lowest frequency I could reach reliably was 1.1 Hz with an 80mV input. Higher input levels didn't affect the latter.
probably 3.3 or 5v
if i was testing frequency, i would be using logic to generate it.
BTW, ADM08A sells for 18-19 USD and it's much solidly build than AN8008....
I've got the Peak Meter branded version of that (the PM18C) and it's a pretty nice meter that works well. But I doubt it would appeal at all to the AN8002/8008 audience; it's about four times the size and manual ranging.
Personally, I wouldn't mind manual ranging, but then - I haven't had an auto ranging meter yet. Functionality wise, for a 6000 count, it is more expensive than you can get the AN8002 (which is about $13-14 lowest price). None of them have a huge price difference though.
The datasheet says battery test for 9V and 1.5V. I guess 40mA load for 1.5V and 24mA for 9V.
More useful than a square wave output!
(Now I need one of those as well. )
PS: Do you think I should send one to Batteroo for their test lab?
That is the cheapest meter I see with battery tester ($3.7).
have you opened [the Peak Meter PM18C]? i mean have you confirmed it's DM1106EN based and not DTM0660? ADM08A is using DM1106EN for sure.
from my understanding for what main purposes people here want to use AN8008, i don't see manual ranging as an issue.
BTW, ADM08A sells for 18-19 USD and it's much solidly build than AN8008....
I've got the Peak Meter branded version of that (the PM18C) and it's a pretty nice meter that works well. But I doubt it would appeal at all to the AN8002/8008 audience; it's about four times the size and manual ranging.
I modified my AN8008 to provide single digit mA readings with 3 digit resolution. I replaced the regular mA/A readings with the ability to measure currents below 100 mA with a XX.XX mA display. Currents below 1A are measured with the same XXX.X mA display. 1A is now the maximum current which can be measured.
I replaced the 0.01 ohm shunt resistor for the A/mA jack with a 0.10 ohm 0.5% resistor which I had in stock. Attached is a picture of the upgraded meter measuring 2.5000 mA current. On the left the meter is in the uA position, the test lead is in the A/mA jack and the meter reads 2.59 (uA) [3.6% high]. On the right I've switched to the mA position but the reading has gone down to 21.9 (mA) [12.4% low]. I obviously haven't corrected the position of the decimal. Remember, the actual current through the meter is 2.5 mA is both cases.
About a 0.12 ohm resistor will correct the magnitude of the of the reading when the meter's switch is in the mA position. But, I prefer having the decimal point in the correct position. Being in the A/mA jack will remind me that mA is the actual display units. I might purchase some 0.10 ohm resistors with less precision hoping to get one a bit low in value which will improve the mA reading's accuracy when the meter's switch is in the uA position.
how about calibrating it instead ? the eeprom holds calibration data. These machines do not bank on the precision of the resistors. they apply mathematical compensation.
again, the common opinion is DTM0600 and DM1106EN are cheap clones of Hycon HY12P66, that's why there are so cheap DMMs with them compared to the one that has original Hycon HY12P66 inside.
My PM-18C has different holes in the amps ranges; instead of 100?A/1000?A/1000mA/10A (.01/.1/1000/100k ?A resolution) it's got 60?A/60mA/600mA/20A (i.e. .01/10/100/1000k ?A resolution).
BTW, ADM08A sells for 18-19 USD and it's much solidly build than AN8008....
I've got the Peak Meter branded version of that (the PM18C) and it's a pretty nice meter that works well. But I doubt it would appeal at all to the AN8002/8008 audience; it's about four times the size and manual ranging.
See the PM18A I noted in the 8001 thread, appears to be a new meter, auto ranging version of the 18C
https://www.aliexpress.com/item/PEAKMETER-Multimeter-Voltmeter-Ammeter-PM18A-with-True-RMS-AC-DC-Voltage-Resistance-Capacitance-Frequency-Temperature-NCV/32817940143.html
again, the common opinion is DTM0600 and DM1106EN are cheap clones of Hycon HY12P66, that's why there are so cheap DMMs with them compared to the one that has original Hycon HY12P66 inside.
I don't think DTM0660L/DM1106EN are clones. You can see from the DTM0660L photo
there are two logos on the chip, DreamTech / HyconTek.
Dream Tech International Ltd is just a trading company import the chips from Taiwan, and export the chips to the manufacturers in China. They do not produce any semiconductors.
HyconTek is just provided a DMM solution to the customers. You can order your customized chips from them.
Dream Tech International Ltd
http://www.dreamtechintl.com.cn/en/about/about-108.html
My PM-18C has different holes in the amps ranges; instead of 100?A/1000?A/1000mA/10A (.01/.1/1000/100k ?A resolution) it's got 60?A/60mA/600mA/20A (i.e. .01/10/100/1000k ?A resolution). So it drops a bit off the bottom to give a bit more in the middle
i don't think that's an issue (as far as not some external components to DM1106EN are crucial for the resolution), because what to measure on what position depends on the EEPROM settings - the same how C/F temperature measurement are added to mV position on AN8008. basically, you should be able to re-arrange what position measures what just with changing bytes in the EEPROM.
IIRC there's an expensive Agilent that jumps from 600uA to 6A.
are there any schematics about for 0660 based meters with the NCV function?
i'm curious what components are involved and the only meter i have here is an 8002.