Products > Test Equipment
C.A. 5275 [Chauvin Arnoux] digital multimeter (teardown and minor repair)
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Nifty:
Background: Two weeks ago, on a local FB market I saw a digital multimeter "C.A. 5275". During this time, the price was reduced from 200 to 75 euros :) apparently, this brand is not very popular in our area. Comes with original probes and holster. Because the price was quite low and I never had a "Chauvin Arnoux" (or Metrix) multimeter (is anyone had?), I bought it out of curiosity.
The seller was in another city, so I couldn't test the multimeter.
Given the seller's strange Facebook profile, I resigned myself to the fact that I might not receive anything or something was wrong with the multimeter ;)
In my multimeter, both fuses (630mA and 10A) were blown. After replacement, everything works. Extra 15 euros for fuses :(
During disassembly, I paid attention to the rigid connection of the probe terminals to the PCB. And (surprise, surprise) the common terminal was already loose. I had to solder it more securely. You shouldn't do this, if the PCB is in the case, the plastic bushings of the terminals melt very quickly.
Like:
The original probes are modular, quite long (1.5 m) with silicone wires.
Nice backlight.
"OFF" position on both sides! Yeah baby!
Do not like:
Not the fastest continuity measurement.
Flimsy mode switch.
coromonadalix:
the pic 18f used as a display driver ??
Nifty:
--- Quote from: coromonadalix on September 27, 2022, 07:14:15 pm ---the pic 18f used as a display driver ??
--- End quote ---
Yes, sir! :)
PIC18F85J90
* An integrated LCD driver module, capable of driving 48 segments and 4 commons for LCD display
* Integrated LCD Voltage Boost Regulator
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