17 Apr
2009
17 Apr
'09
10:07 p.m.
Hello Harald,
On Fri, 17 Apr 2009 10:17:13 +0200, "Harald Welte" <laforge(a)gnumonks.org>
wrote:
Dieter, what I just found out is that the LI object has a user-configurable
setting, where we can force it to be stand alone or locked to the E1.
We could add this setting to the bs11_config program so people can try
if their E1 clock or their [10 years uncalibrated] BS11 internal oscillator
is better.
What do you think?
I did a quick test with this setting and it seems to work fine
with the BS-11 (so we should not believe the documentation ;-).
Here is the LMT dump for the PLL Mode, it can be changed during
normal operation:
; Locked
Tx D0A5070000FC0102
Rx D1A5070000FC0102
; Standalone
Tx D0A5070000FC0103
Rx D1A5070000FC0103
A little bit strange is the behaviour of NM_ATT_BS11_CCLK_ACCURACY,
if the PLL Mode is set to "Standalone", it changes to "high
accuracy",
however if you restart the BS-11, this attribute stays at "medium
accuracy". Maybe NM_ATT_BS11_CCLK_ACCURACY has no meaning if the
PLL Mode is set to "Standalone".
Best regards,
Dieter
--
Dieter Spaar, Germany spaar(a)mirider.augusta.de