Datenblatt-Suchmaschine für elektronische Bauteile |
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EVK-NINA-B1 Datenblatt(PDF) 12 Page - u-blox AG |
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EVK-NINA-B1 Datenblatt(HTML) 12 Page - u-blox AG |
12 / 21 page EVK-NINA-B1 - User guide UBX-15028120 - R11 Product description Page 12 of 21 Figure 9: Placement of R4 and R6 (10 Ω resistors) 1.7.4.1 Current measurement with ampere-meter Remove the jumpers on J15 and J6. Remove the 10 Ω resistors R4 and R6 and connect the ampere- meter in series between the pins 1 and 2 of the J15 pin header. This will give the NINA-B1 current consumption reading on the ampere-meter. 1.7.4.2 Current measurement with Oscilloscope Remove the 10 Ω resistor on R4. Remove the jumpers on J15 and J6 and connect an oscilloscope to pins 1 and 2 of the J15 pin header. Then, this will display the voltage drop over the R6 resistor. Current consumption will be proportional to the voltage drop. If R6=1 Ω, then 1 mV voltage drop equals 1 mA of current. If R6=10 Ω, then 10 mV voltage drop equals 1 mA of current. ⚠ The USB interface, MCU interface, and the LEDs should not be connected during current consumption measurement. 1.8 Software debug options You can debug the software using the following two options in EVK-NINA-B1: Onboard debug solution available on the USB connector Using an external debugger connected to J12 connector An external debugger connected to the J12 connector is useful when powering the evaluation board with the CR2032 coin cell battery, or through the external power supply connector J5. It could also be useful in a scenario where the debug MCU interface has been disconnected from the NINA-B1 module using the jumpers on J9 header. The SEGGER J-Link software [5] is required to debug using the onboard J-Link hardware on the EVK-NINA-B1. |
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Ähnliche Beschreibung - EVK-NINA-B1 |
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