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Measuring Voltage supplied to linksprite SIM900

voltage sim900

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#1 thandana

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Posted 11 October 2015 - 09:46 AM

Hi,

 

Im powering the linksprite SIM900 using a PCB that I have designed.

 

The PWR LED turns ON, however when I try to power ON the SIM900, the status and network LED's come ON for a few seconds and then turn OFF.

 

How do I measure the voltage supplied to the SIM900 device?



#2 cwilt

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Posted 11 October 2015 - 12:06 PM

I would use a voltmeter at the power input jack. If you are meaning at the SIM900 chip itself then I would find the data sheet and use voltmeter on the proper pin carefully.

Your question lacked detail so I am not sure if that is the answer you are looking for.





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