就得过RF IN端口,直接用BNC转接sma。
M
mypear
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Lora发射功率
回复: LoRa模块量产版本出世(射频性能又有惊喜):Ting-01和Ting-01M,增加数据手册
楼主我这边也在研究lora,我也是用安捷伦(不过型号是N9320B)看发射功率,最大是达到0dBm刻度,但发给别人别的仪器测试可以到达19dBm。请教楼主,X轴左边如何设置,可以从0dBm到20dBm显示。
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python编写PWM驱动,出错。
使用MTK官方例子:
import mraa
pin = mraa.Pwm(18)
。。。。。。。
运行到 pin = mraa.Pwm(18)就提示错误,如下:
File "gpio.py", line 11, in <module>
pwm = mraa.Pwm(18)
File "/usr/lib/python2.7/site-packages/mraa.py", line 1121, in init
this = _mraa.new_Pwm(pin, owner, chipid)
ValueError: Error initialising PWM on pin
有遇到同样问题的进来讨论下。