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BLE Chip CC2540 : Performing Measurements of Sleep Current
We am conducting the measurement for the BLE chip CC2540 sleep current but facing some difficulties. We am referring on the Application Note AN092 'Measuring Bluetooth Low Energy Power Consumption' (getliterature.tsp?literatureNumber=swra347&fileType=pdf
The test setup, SW code modification & BTool configuration setting all set properly as per application note. We configure the DUT to have 8s sleep mode via BTool 1.2, but the oscilloscope measurement show it is just about 100ms in sleep mode then turn into connection mode again. Such scenario is making us impossible to read the sleep mode current on the DMM on uA for short moment.
Appreciate if anyone could help on this. Thanks.
That's really strange.
In BTool, First make sure that you have the following parameters;
Make sure you press "Set" (Connections Settings) before "Establish" (Link Control).
Please have another go and post your progress.
Here are the pictures for my measurement with the configuration setting where I manage to obtain 2s only. Anything I missed out?
The Max/Min Connection Interval setting is up to 3200.
Remarks : The differential signal spike is too fine. I put the cursors reading for your reference.
This is odd. Could you catch the actual events and see if there are some without TX/RX pulses? The events with TX/RX should only occur every 8 seconds since your Establish Connection packet seem to be just fine.
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