On 01/03/2005 02:41 PM, Rasmus Larsen wrote:
On Monday 03 January 2005 16:45, Greg Haase wrote:Yes--depending on what program you use to set the frequency. If you use a nice "user-friendly" tool like ptune.pl (in the utils directory), specify the channel number and frequency table and all is handled for you. With ptune.pl, you may also specify the frequency in kHz.
But I think i've got it working now with ivtv tuner=50, except i have to multiply the frequency by 16, is that correct behavior?!
If you use ivtvctl to specify the freqency, however, you must specify the number of frequency steps. The tuner driver in the Linux kernel uses a freqency step of 62.5kHz. Therefore, using NTSC cable channel 73 (517.25MHz) as an example,
517.25MHz / 0.0625MHz/step = 8276steps or, since 1MHz / 0.0625MHz/step = 16steps 512.25MHz * 16steps/MHz = 8276steps
And if I shift away from the a signal on the tuner and to static the signal seems to be fine (after a second or two)...The tuner is constantly fine-tuning its settings to ensure an optimum picture quality even when the signal has some drift. Of course, you have to be close for it to be able to know what channel you want, so if you move too far off the frequency, you'll get static.
Mike
------------------------------------------------------- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt _______________________________________________ ivtv-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ivtv-devel
