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| U1272A - Yay! |
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| PetrosA:
My new toy arrived today! I haven't had a chance to get photos of it taken apart yet, but they'll be along soon. First observations It's nicely packed and comes with basic test leads (interchangeable tips), a K thermocouple lead w/adapter and four AAA GP batteries. It kinda struck me as odd that it doesn't come with a case since it's intended for field use. I loaded the batteries and turned it on. The display is much bigger and the backlight is much better than on my U1211A clamp meter and the extra digits in the display make an impression right away ;). Having read about the warning flashes and beeps for when you plug into the A or mA/uA range in a non current mode that was one of the first things I tried out. Well... I don't know if it was because the meter was still cool from transport or what, but it locked up in that mode and neither cycling the power or reseating the batteries helped. It was only after I took the meter apart to check for damage or loose bits (none found) that it started working properly again. I'm also not sure what method it uses to detect which terminal has a probe plugged into it. After getting it working again, I started making some test measurements and it's definitely way faster to settle on readings than the U1211A clamp. For AC voltage they differ by ~ 0.2V which I thought was a pretty good result for the clamp. I haven't been able to get the scale function to work in mA range with a current clamp yet, but I probably am not doing it right. I'll keep fiddling with it. Speaking of the mA and A range, there doesn't seem to be a setting to make it default to AC for these ranges which strikes me as odd considering who the meter is intended for. What's more, once you reset to AC and try to use another function like max or peak hold, it jumps back to DC while min/max/average simply wouldn't work for me in AC mode. Again, I'll have to fiddle with it some more, but it doesn't seem like it should be that complicated to set up such a basic (for electricians) measurement. One other test I did was to see if in LowZ mode it would trip a GFI (RCD) outlet while measuring between hot and ground (PE). It did, but it also freaked the meter out again somehow (it didn't quite freeze this time but it wouldn't read voltage) and I had to restart it to get it to measure voltage again. I suspect that some of the odd behavior I've had may be related to the cheapie batteries since it's already showing two out of three markers on the battery indicator with less than an hour of usage. I'll be playing with it and using it at work over the next few days and I'll write more and get some photos up ASAP. |
| TopherTheME:
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| PetrosA:
--- Quote from: TopherTheME on February 01, 2011, 03:42:54 am --- --- End quote --- Ok ok. Gimme a minute ;P |
| EEVblog:
--- Quote from: PetrosA on February 01, 2011, 12:28:19 am ---I suspect that some of the odd behavior I've had may be related to the cheapie batteries since it's already showing two out of three markers on the battery indicator with less than an hour of usage. --- End quote --- Can't be the batteries. If the unit is not showing "low batt" or some such then the unit MUST meet it's spec and operate correctly. You'd at least expect that of brand name instrument ;D Assuming of course it's not faulty. Dave. |
| Mechatrommer:
here is the ad picture for everybody... |
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