the functionning of Deep sleep with the card (esp32+T-sim7600 GH)

[Mariem114114]

hello , we are testing the sleep mode of the card (esp32+T-sim7600 GH) by executing a simple code where we do not have GSM features and executing the allfunctions code provided in the github. In order to study and optimize the energy consumption of the card, we are measuring the current with an amperemeter connected in series with a power supply and the card. The result when we use a simple code is good, we manage to reach the 0.9 mA in deep sleep mode. However, when we use the GSM modem features, for example when we test the GPS, we can reach only 50mA for the consumption of the card when we enter the deep sleep mode and when we switch off the modem. It should be close to 0. Could you give me an explanation for this?

Thanks a lot. Sincerly

[lewisxhe]

Are you sure you have turned off all modems? If you are sure that the modem has been turned off (the red light is off). Then you can first remove the GPS antenna and see how much current is consumed