Products > Test Equipment
ANENG goes crazy with new meters
rsjsouza:
--- Quote from: Fungus on November 30, 2020, 11:13:41 am ---
--- Quote from: rsjsouza on November 30, 2020, 10:38:59 am ---One bad mechanical aspect of my RM219 (maybe the AN870 is different) is that the tilting bale is hinged on the rubber/plastic protection holster. This completely kills its mechanical robustness and makes it cave when a rotary switch is being used or a probe is inserted. Apart from that and the low frequency bandwidth (mine goes up to 3.4kHz) it is quite good.
--- End quote ---
I don't know of any meter that would let you insert/remove probes one-handedly when it's standing up.
My fluke 27 will let you turn the selector when it's on the stand but it has a huge stand. I don't know of any others. My Brymen moves around the table.
--- End quote ---
UT61E for starters. 87V, U1282A, U1273A and many others don't balk at a light push towards them. Heck, even the mini Richmeters 113D.
The probe insert/remove is not a huge problem - after all, the jacks are near the bottom of the instrument. However, the rotary switch of the RM219 is somewhat stiffer than the normal and, after the fourth or fifth switch, I have to "reset" the tilting bale to is normal standing position.
rernexy:
Pic of my AN9002 opened up.
I can take more photos, and maybe video of the bluetooth app if anyone is interested.
Edit 1: Added 2 more photos aneng9002-open-02b.jpg aneng9002-open-03b.jpg
rernexy:
More photos of the input jacks on my AN9002
Edit 1: Add blurry photo of bluetooth chip.
exe:
Got my q10. What I can say, I'm less than impressed. The inverted display feels slow, bundled probes are useless (don't even pass continuity tests when touching each other until I press really hard). Continuity test is horrible, it seems it's implemented in software as bargraph updated before the meter reacts with beep and red led. Well, at least it has a flashlight... I think I'll get rid of it.
AN8002/AN8008 remain my favorite meters so far, although one of them started to go nuts in mV mode, sometimes showing up to 20mV offset until I re-set the selector switch. Is that the problem with contacts you folks were talking before?
floobydust:
UPDATE: I applied CAIG DeoxIT FaderLube D5 to the AN8008 rotary switch contacts and it's working great. It looks like any PPE fixes the copper leafs issue. Before, I'd tried cleaning with IPA and a soft scrub on the copper, then lube- which only works for a few weeks even in a dry workshop.
Before, I find an oxidized rotary switch gives bad, wandering readings on continuity/200R scale, or power cutting out. You'd have to do the ritual back and forth a few times to scrub off oxide, which also seems to make an offset potential which could be what that you are seeing.
This DMM chip set is kinda old, they have milked the cow for many years. It needs to advance from 8-bit clunker at 4MHz with a few KB OTP and few hundred bytes RAM. They can't keep adding features in assembly language, kinda tricky.
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