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Fault tracing meter with novel displays - Mechanic Sherlock V2.

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Fraser:
Teardown continued.....

Kean:
Thanks for the photos and disassembly tips.  I'm am back at the office now after a few days of field work on penguin weighbridges.
I've just pulled my Sherlock apart as well.  I did have to resort to a Wera 1.5mm Hex-Plus bit to remove the rather tight screws, and long tweezers to "release" the push buttons.
I will try to do hacking to drive the OLED from my own circuitry later this week.

Fraser:
Penguin’s ? I adore Penguin’s  :-+ I saw a lot of them whilst deployed to the Faulkland Islands back in 1992. Such cute little characters, but boy did their colonies smell bad, especially as I seriously dislike the smell of fish !

Fraser:
Some test results from my Fluke 87 III whilst testing probe P.D. and current flow in the probes short circuit condition……


Semiconductor Junction (Diode) Test Mode

P.D. Across probes = 3.295V d.c. (Red probe is positive output)
Current flow with probes shorted through Fluke multimeter mA range = 0.950mA

Resistance Test Mode

P.D. Across probes = 3.295V d.c. (Red probe is positive output)
Current flow with probes shorted through Fluke multimeter mA range = 0.950mA

Voltage Test Mode

P.D. Across probes = 0.000V
Current flow with probes shorted through multimeter mA range = 0.000mA
As you would expect !  :)


The 2mm sockets are connected directly to the probe tips.

Kean:
Yep, the whole thing in those reviews about using the banana sockets to power the DUT was a misunderstanding.  They are just another connection point for the probes to allow using banana to alligator clip leads if you only want to hold one probe.

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