Frequency Err 到底怎么调整？

RFlw

OK. Got you.

I don't divide reference freq, instead I divide feed back freq. Also Iuse Fractional_N  translational Loop  offset PLL. It isdifferent.

Thanks,

52RF

超过40 贴，在这个论坛讨论半天竟然没有人说出个所以然来，可惜可惜啊。

不要命的男人

36楼   26M不可能是0.1ppm的

不要命的男人

Phase and frequency error measurements are complex, The test
receiver or analyzer samples the transmitter output in order to capture the
actual phase trajectory. This is then demodulated and mathematically the
ideal phase trajectory is derived. Subtracting one from the other results in
an error signal. The mean gradient of this signal (phase/time) gives frequency
error. The variation of this signal is defined as phase error and is expressed
in terms of root mean squared (rms) and peak.[br]<p align=right><font color=red>+3 RD币</font></p>

pinkao77

PLL需要基準，so needed to check the pll reference clock frequency to meet the tolence.

saintyou

怎么回事情啊

cylbailey

报告BZ，有人考古[em02]

mengzhai

探古ing