chank_02
Newbie level 5
transformateur ax141
I use DTMF CM8888 IC to generate DTMF signal. I've success to generate it. But, it doesn't transfer to PSTN line. I've check the output signal after trough the transformer, the signal not same with the first it generated. I use AX141 transformer to match the impedance. So, Would you like to help me about to solve it.
Thank's b4 (Ichank)
I use DTMF CM8888 IC to generate DTMF signal. I've success to generate it. But, it doesn't transfer to PSTN line. I've check the output signal after trough the transformer, the signal not same with the first it generated. I use AX141 transformer to match the impedance. So, Would you like to help me about to solve it.
Thank's b4 (Ichank)