[LinuxPPS] gps_nmea error

[Udo van den Heuvel]

Ritter, Nicholas wrote:
> Aug  5 09:33:05 RMSQSN1001 ntpd[29716]: refclock_nmea: time_pps_kcbind
> failed: Operation not supported
>  
> what does this error mean?

http://wiki.enneenne.com/index.php/LinuxPPS_support#FAQs

> When I do an "ntpq -p" on the PPS/GPS ntp server I see the following:
(...)
> Am I understanding correctly that the GPS source is working, but
> something about the PPS source is not?

Possibly.
I assume you set the PPS pulse to 300 ms?

> Am I also correct in assuming
> that it could be a config problem in ntp.conf, or is it somewhere else?

Could be. Please verify reception first.
Then verify PPS using minicom. (assume pps on DCD)
Check polarity, maybe inverse or change config for up/down edge.

Udo