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Products => Test Equipment => Topic started by: bullonwheels on February 06, 2019, 05:31:49 am

Title: Test crystal 16kihz
Post by: bullonwheels on February 06, 2019, 05:31:49 am

Hello All,

How do I test the 32kiHz crystal if it is active or not ?
Also, how do I test individual gpio's which is pulling high current ?
I see a MCU ARM controller at 1.9  gets into high current consumption mode.
I want to find out how and why ?

Title: Re: Test crystal 16kihz
Post by: Fungus on February 06, 2019, 07:12:53 am

Quote from: bullonwheels on February 06, 2019, 05:31:49 am

Hello All,

How do I test the 32kiHz crystal if it is active or not ?

With an oscilloscope.

Quote from: bullonwheels on February 06, 2019, 05:31:49 am

Also, how do I test individual gpio's which is pulling high current ?
I see a MCU ARM controller at 1.9  gets into high current consumption mode.
I want to find out how and why ?

A GPIO can only pull high current if something is attached to it and software makes it active.