Re: BS-11 PLL clock source / calibration

Hello Christian, On Thu, 30 Apr 2009 03:13:33 +0200, "hotshot" <hotshot(a)koeln.ccc.de> wrote: In the latest OpenBSC version there is support to show the "Set Value" and the "Work Value" of the PLL setting. The "Set Value" is the configuration value from the factory. The "Work Value" is not 100% clear yet but most certainly it is the value the PLL is actually using. In "Locked" mode the PLL follows the E1 clock and the "Work Value" can change quite a lot. Switching to "Standalone" mode seems to freeze the current "Work Value". The question now is if the PLL still used this "Work Value" in "Standalone" mode. If yes and the "Work Value" is off by a large amount the clock is not accurate (although its most certainly stable) and you still won't the test network and the other networks at once. If the "Work Value" of your BS-11 is off by a large amount from the "Set Value" you can try to switch to "Locked" mode and watch if the "Work Value" follows the E1 clock. If its close to the "Set Value", switch back to "Standalone" mode. I have not tested this and I don't know a better way yet (I don't think the "Work Value" can be set from the outside) but you can give it a try. Best regards, Dieter -- Dieter Spaar, Germany spaar(a)mirider.augusta.de