digital clock near cable box always gaining minutes per month-- any way to remedy?

micky har bragt dette til os:

You are lucky if the programs start at the announced time.

Here, usually the commercials and the advertisements of other shows usually start at the announced time for the show.

Leif

--
Je suis Charlie

It relied on the PBS station keeping the proper time. And that wasn't always the case.

My DTV has "automatic", but I'm not sure where that's coming from. I assume it's a different form than those VCR and DVD recorders. But it too varies, it will change time with the station if the station has the wrong time.

Michael

What do you think the difference is between Off and Manual?. Even when I have it on Off, I can still change the time manually

(that is, using the remote, going to time, putting in the numbers that represent the time.) .

Michael Black wrote: "It relied on the PBS station keeping the proper time. And that wasn't "

I live within 40 miles of three PBS affiliates, and while my rooftop setup is strong enough to pull in steady picture and sound, a lot of times I still don't get the meta(title and description of the program currently showing), let alone time correction.

I also wish this 'smart' Samsung LED had a way to view signal strength the way my ChannelMaster CM7000 converter box did.

I have only been half following this thread, but I thought the PBS (public TV is the US) time setting thing was a feature added to analog broadcasts. It certainly started that way. They added some bits in the retrace portion of the NTSC signal. Did the feature somehow survive the analog to digital transition?

Pat

That was the point. We were told to use a PBS station since it was either the stations that had the time feature, or the most likely ones (I don't know if it ever propogated to commercial stations).

DTV sets do have "auto" when keeping time, so I've assumed the DTV standard includes a timecode somewhere. I know it works on various stations, though as I said, the station has to keep proper time. Every so often the time gets skewed, and it's because of one station.

But I am assuming the DTV arrangement is different from the analog time system.

Michael

Well since you're 100 percent certain that it is the cable box when why not disconnect and unplug the cable box and go out and beat tweakers with it. At least until you can determine that it actually was the cable box that was throwing your clock out of whack.

BTW: Doesn't the cable box have a clock of it's own? A more accurate self setting clock like most cable boxes made in the past 20+ years?

PBS transmitted the time code in the vertical retrace, where VIR and VITS are also transmitted on other horizontal lines. The CRT was blanked during this time, but on some sets you could see these signals at the top of the screen by reducing the height of the display.

--
Anyone wanting to run for any political office in the US should have to 
have a DD214, and a honorable discharge.

Me too, but now I wonder where. When the antenna amplifier is not working, I can't get any PBS station well. Yet it did change the time a few days ago when DST ended.

I knew no better and assumed it was the same, but I gather it's not.

Where, oh where has the time gone?

Yes. AIUI, because of things related to speed regulation of dynamos, the frequency of the power line current does occasionally run too fast or slow by a portion of a second or more, but they keep track and make it do the opposite so that the time signal averages out correctly.

micky wrote: "Me too, but now I wonder where. When the antenna amplifier is not working, I can't get any PBS station well. Yet it did change the time a few days ago when DST ended. "

Uhh micky, DST just STARTED a couple weeks ago. Notice how dark it is at morning and how light it is past dinner?

(One more reason to abolish it: The average citizen doesn't know Standard from Savings, and what they're supposed to do at the beginning of each!)

Some clocks have a variable capacitor next to the crystal to fine tune the time keeping. To adjust them I use this web as a time reference

One day is enough to check if it is good enough, a deviation of less than 1 second a day are less than 3 minutes in 6 months. You can get better using longer time spans. I dessisted to use cheap atomic clocks for that. For some reason when they sync they keep a variable deviation of some seconds, that is not good enough for a 1 day check of another clock.

We have analog clocks with a motor for each hand. They accept external SMPTE timecode. Plug them in and the hands move CW or CCW to the proper time. They take less than 20 seconds to set themselves.

Good for you ;-)

What's the reason for this? Theater use? Resetting the clocks for movie/TV recording?

Why this extra cost? My analog clock resets the hands to 12-o'clock after battery change (it only knows when the hands are "home", it does not have an angular encoder or something. After the hands are home, the hands moves fast to the correct time, but with the usual speed ratio between seconds, minutes and hour-hands.

Leif

--
Je suis Charlie