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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
Posted to sci.electronics.design,sci.electronics.repair,alt.engineering.electrical,alt.tv.tech.hdtv
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DTV Pal running slow
My DTV Pal set top box is starting its scheduled channel changes late.
Currently it's running 10 minutes late. I've disabled "inactivity standby" (which turns it off after certain time without detecting activity from the remote) because it would frequently turn off prior to scheduled recordings. (No, it doesn't wake up to execute schedules.) This also disables automatic download of stations' program information including current time (which it does during its "off time"). Forcing a Reset (holding down the Power button) results in downloading of program info as well as automatically setting the internal clock (based on stations' time data). But this gets tedious. The problem is that if I haven't recently forced a reset, the DTV Pal will keep running later and later. Do these things have simple crystal controlled clocks? Suggestions re. how to stabilize it? Adjust it? Thanks, -- DaveC This is an invalid return address Please reply in the news group |
#2
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
DaveC wrote: My DTV Pal set top box Model, make etc ? Graham |
#3
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv,alt.engineering.electrical
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DTV Pal running slow
Model, make etc ?
DTV Pal (also marketed under the model name TR-40) by Dish Network. -- DaveC This is an invalid return address Please reply in the news group |
#4
Posted to sci.electronics.design,sci.electronics.repair,alt.engineering.electrical,alt.tv.tech.hdtv
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DTV Pal running slow
"DaveC" wrote in message obal.net... My DTV Pal set top box is starting its scheduled channel changes late. Currently it's running 10 minutes late. I've disabled "inactivity standby" (which turns it off after certain time without detecting activity from the remote) because it would frequently turn off prior to scheduled recordings. (No, it doesn't wake up to execute schedules.) This also disables automatic download of stations' program information including current time (which it does during its "off time"). Forcing a Reset (holding down the Power button) results in downloading of program info as well as automatically setting the internal clock (based on stations' time data). But this gets tedious. The problem is that if I haven't recently forced a reset, the DTV Pal will keep running later and later. Do these things have simple crystal controlled clocks? Suggestions re. how to stabilize it? Adjust it? Thanks, -- DaveC This is an invalid return address Please reply in the news group See this link, similar problem. Could be the station clock is off ... http://qna.omgili.com/jmp/jHIAmI4hxg_hf1cmsoJd0xxDKgr.sJJDgY2wrRwyIqREhKXlHr o4KRiyb0EK9oXKJayrWTKlfM3o2Uh9Qe8WuGSvsO0..e5Anhhz uVjW2he4c0WZiuJ.SzAmHOgYoqU7ht9oBOjiwGqQNXz9kTXkH0 dEOm4_PKBZhAyHUXSTO6k- Cheers |
#5
Posted to sci.electronics.design,sci.electronics.repair,alt.engineering.electrical,alt.tv.tech.hdtv
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DTV Pal running slow
Martin Riddle wrote:
"DaveC" wrote in message obal.net... My DTV Pal set top box is starting its scheduled channel changes late. Currently it's running 10 minutes late. I've disabled "inactivity standby" (which turns it off after certain time without detecting activity from the remote) because it would frequently turn off prior to scheduled recordings. (No, it doesn't wake up to execute schedules.) This also disables automatic download of stations' program information including current time (which it does during its "off time"). Forcing a Reset (holding down the Power button) results in downloading of program info as well as automatically setting the internal clock (based on stations' time data). But this gets tedious. The problem is that if I haven't recently forced a reset, the DTV Pal will keep running later and later. Do these things have simple crystal controlled clocks? Suggestions re. how to stabilize it? Adjust it? Thanks, -- DaveC This is an invalid return address Please reply in the news group See this link, similar problem. Could be the station clock is off ... http://qna.omgili.com/jmp/jHIAmI4hxg_hf1cmsoJd0xxDKgr.sJJDgY2wrRwyIqREhKXlHr o4KRiyb0EK9oXKJayrWTKlfM3o2Uh9Qe8WuGSvsO0..e5Anhhz uVjW2he4c0WZiuJ.SzAmHOgYoqU7ht9oBOjiwGqQNXz9kTXkH0 dEOm4_PKBZhAyHUXSTO6k- Wouldn't surprise me the least bit, considering that they often can't even keep the guide list current. Or just won't. We regularly turn on the TV because a movie was announced. Then some other movie plays while (!) the original one is still listed. Seems nobody gives a hoot there. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM. |
#6
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
DaveC wrote: Model, make etc ? DTV Pal (also marketed under the model name TR-40) by Dish Network. Means nothing to me. Why are you using PAL in the USA ? Graham |
#7
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
Eeyore wrote:
DaveC wrote: Model, make etc ? DTV Pal (also marketed under the model name TR-40) by Dish Network. Means nothing to me. Why are you using PAL in the USA ? "pal" as in "buddy" I guess. Maybe "mate" or "bloke" in rightpondian ;-) -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM. |
#8
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
"Eeyore" wrote in message ... DaveC wrote: Model, make etc ? DTV Pal (also marketed under the model name TR-40) by Dish Network. Means nothing to me. Why are you using PAL in the USA ? Graham Not PAL as in the video standard but Pal as in that's what the set-top box is called. Kind of like VCR meant any format (VHS or Beta) Video Casette Recorder in the US and not a specific format of Video Casette Recorder or Video. Also see DivX and DRM. |
#9
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
Andy from Dover wrote: "Eeyore" wrote DaveC wrote: Model, make etc ? DTV Pal (also marketed under the model name TR-40) by Dish Network. Means nothing to me. Why are you using PAL in the USA ? Not PAL as in the video standard but Pal as in that's what the set-top box is called. Kind of like VCR meant any format (VHS or Beta) Video Casette Recorder in the US and not a specific format of Video Casette Recorder or Video. How deliberately confusing is that ? PAL = Phase Alternate Line. http://en.wikipedia.org/wiki/PAL NTSC = never twice the same colour. http://www.ee.surrey.ac.uk/Contrib/WorldTV/why.html Graham |
#10
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
Joerg wrote: Martin Riddle wrote: "DaveC" wrote in message My DTV Pal set top box is starting its scheduled channel changes late. Currently it's running 10 minutes late. I've disabled "inactivity standby" (which turns it off after certain time without detecting activity from the remote) because it would frequently turn off prior to scheduled recordings. (No, it doesn't wake up to execute schedules.) This also disables automatic download of stations' program information including current time (which it does during its "off time"). Forcing a Reset (holding down the Power button) results in downloading of program info as well as automatically setting the internal clock (based on stations' time data). But this gets tedious. The problem is that if I haven't recently forced a reset, the DTV Pal will keep running later and later. Do these things have simple crystal controlled clocks? Suggestions re. how to stabilize it? Adjust it? See this link, similar problem. Could be the station clock is off ... http://qna.omgili.com/jmp/jHIAmI4hxg_hf1cmsoJd0xxDKgr.sJJDgY2wrRwyIqREhKXlHr o4KRiyb0EK9oXKJayrWTKlfM3o2Uh9Qe8WuGSvsO0..e5Anhhz uVjW2he4c0WZiuJ.SzAmHOgYoqU7ht9oBOjiwGqQNXz9kTXkH0 dEOm4_PKBZhAyHUXSTO6k- Wouldn't surprise me the least bit, considering that they often can't even keep the guide list current. Or just won't. We regularly turn on the TV because a movie was announced. Then some other movie plays while (!) the original one is still listed. Seems nobody gives a hoot there. My cable provider updates the prgramme guide via cable broadband ( built into the STB ) It can 'go funny' sometimes presumably when traffic is high. It's NEVER 10 mins out though, maybe a minute at worst. Indeed the STB seems to be a combined TV source and broadband router. Graham |
#11
Posted to sci.electronics.design,sci.electronics.repair,alt.engineering.electrical,alt.tv.tech.hdtv
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DTV Pal running slow
See this link, similar problem. Could be the station clock is off ...
No such luck. Each station is spot on and agrees with my computer's clock (I'm using a computer as a DVR). As further evidence that it's internal, forcing a "reset" (holding down the Power button) forces the stb to synchronize its clock with whatever source (you say CBS affiliate?) it uses as its reference. That corrects the late clock, but it continues to get slower as the days tick by. Ideas? Thanks, -- DaveC This is an invalid return address Please reply in the news group |
#12
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
Eeyore wrote:
Joerg wrote: Martin Riddle wrote: "DaveC" wrote in message My DTV Pal set top box is starting its scheduled channel changes late. Currently it's running 10 minutes late. I've disabled "inactivity standby" (which turns it off after certain time without detecting activity from the remote) because it would frequently turn off prior to scheduled recordings. (No, it doesn't wake up to execute schedules.) This also disables automatic download of stations' program information including current time (which it does during its "off time"). Forcing a Reset (holding down the Power button) results in downloading of program info as well as automatically setting the internal clock (based on stations' time data). But this gets tedious. The problem is that if I haven't recently forced a reset, the DTV Pal will keep running later and later. Do these things have simple crystal controlled clocks? Suggestions re. how to stabilize it? Adjust it? See this link, similar problem. Could be the station clock is off ... http://qna.omgili.com/jmp/jHIAmI4hxg_hf1cmsoJd0xxDKgr.sJJDgY2wrRwyIqREhKXlHr o4KRiyb0EK9oXKJayrWTKlfM3o2Uh9Qe8WuGSvsO0..e5Anhhz uVjW2he4c0WZiuJ.SzAmHOgYoqU7ht9oBOjiwGqQNXz9kTXkH0 dEOm4_PKBZhAyHUXSTO6k- Wouldn't surprise me the least bit, considering that they often can't even keep the guide list current. Or just won't. We regularly turn on the TV because a movie was announced. Then some other movie plays while (!) the original one is still listed. Seems nobody gives a hoot there. My cable provider updates the prgramme guide via cable broadband ( built into the STB ) It can 'go funny' sometimes presumably when traffic is high. It's NEVER 10 mins out though, maybe a minute at worst. Indeed the STB seems to be a combined TV source and broadband router. The technology is fine in our case as well. But someone at the station would need to trudge over to the computer and enter the change. That's not happening. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM. |
#13
Posted to sci.electronics.design,sci.electronics.repair,alt.engineering.electrical,alt.tv.tech.hdtv
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DTV Pal running slow
DaveC wrote:
See this link, similar problem. Could be the station clock is off ... No such luck. Each station is spot on and agrees with my computer's clock (I'm using a computer as a DVR). As further evidence that it's internal, forcing a "reset" (holding down the Power button) forces the stb to synchronize its clock with whatever source (you say CBS affiliate?) it uses as its reference. That corrects the late clock, but it continues to get slower as the days tick by. Ideas? Is there possibly a setup menu that has an entry field for "update clock every xx minutes"? -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM. |
#14
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
Eeyore wrote:
Andy from Dover wrote: "Eeyore" wrote DaveC wrote: Model, make etc ? DTV Pal (also marketed under the model name TR-40) by Dish Network. Means nothing to me. Why are you using PAL in the USA ? Not PAL as in the video standard but Pal as in that's what the set-top box is called. Kind of like VCR meant any format (VHS or Beta) Video Casette Recorder in the US and not a specific format of Video Casette Recorder or Video. How deliberately confusing is that ? PAL = Phase Alternate Line. http://en.wikipedia.org/wiki/PAL NTSC = never twice the same colour. http://www.ee.surrey.ac.uk/Contrib/WorldTV/why.html Graham Eeyore=Idiot |
#15
Posted to sci.electronics.design,sci.electronics.repair,alt.engineering.electrical,alt.tv.tech.hdtv
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DTV Pal running slow
"DaveC" wrote in message
obal.net... My DTV Pal set top box is starting its scheduled channel changes late. Currently it's running 10 minutes late. -snipped for brevity- Have you tried the newest [f207] firmware? More Q&As , with clock info, he http://www.avsforum.com/avs-vb/showthread.php?t=1099071 |
#16
Posted to sci.electronics.repair
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DTV Pal running slow
Hi!
With clock symptoms showing up, the first thing I'd look for is a battery or large capacitor on the board...either one could be responsible for keeping the clock running. Personally, I'd bet the thing has a battery like a CR2032 in place to keep the clock running. Many designs will only use the battery when it's needed, but some pull from it all the time. If the unit were to be stored in the absence of wall power, or if it uses the battery all/most of the time even when plugged in, the battery should last 2-3 years. William |
#17
Posted to sci.electronics.design,sci.electronics.repair,alt.engineering.electrical,alt.tv.tech.hdtv
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DTV Pal running slow
In article "Martin Riddle" writes:
"DaveC" wrote in message lobal.net... My DTV Pal set top box is starting its scheduled channel changes late. Currently it's running 10 minutes late. I've disabled "inactivity standby" (which turns it off after certain time without detecting activity from the remote) because it would frequently turn off prior to scheduled recordings. (No, it doesn't wake up to execute schedules.) Mine records while "off". I don't know when or how it gets the time on yours, but mine has to get it from PSIP since the local TVGOS doesn't work. I asked the station engineer about it, and he said they would get it going, but that was months ago -- I doubt they are able to make it work. I have noticed errors all over the place with the PSIP time, one station was about 13 years slow (time from 1996 or so). This also disables automatic download of stations' program information including current time (which it does during its "off time"). So, let it shut down. It will still record. Of course, there is no reason it needs to be "off" to download the time, and no reason it needs to reboot to load the TVGOS guide, but it continues to try that too. At least it gathers PSIP while on and active, but it stupidly forgets the PSIP information very rapidly while looking at it. Probably cheap offshore programmers doing a bad job of programming. Other obvious programming problems are that it cannot realize when it can use 1 tuner for two overlapping recordings from the same channel. Do these things have simple crystal controlled clocks? Suggestions re. how to stabilize it? Adjust it? Well, if it wants to be "off", let it turn "off". Alan |
#18
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
In article Eeyore writes:
DaveC wrote: Model, make etc ? DTV Pal (also marketed under the model name TR-40) by Dish Network. Means nothing to me. Why are you using PAL in the USA ? Because the product called the DTV Pal works with ATSC. It's just a name. (It originally was called the TR-50 (not TR-40, the -40 was a CECB)). http://dtvpal.com/ Alan |
#19
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
In article Eeyore writes:
How deliberately confusing is that ? PAL = Phase Alternate Line. http://en.wikipedia.org/wiki/PAL NTSC = never twice the same colour. http://www.ee.surrey.ac.uk/Contrib/WorldTV/why.html Apparently only to someone who has had their brain fried by the 50 Hz flicker of slow television. It has been accepted by many, that NTSC has given *better* color than PAL ever since solid state electronics have made phase response stable in the early 1970's. But, we are talking about ATSC here. Alan |
#20
Posted to sci.electronics.design,sci.electronics.repair,alt.engineering.electrical,alt.tv.tech.hdtv
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DTV Pal running slow
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#21
Posted to sci.electronics.design,sci.electronics.repair,alt.engineering.electrical,alt.tv.tech.hdtv
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DTV Pal running slow
In article , Kalarama wrote: "DaveC" wrote in message lobal.net... My DTV Pal set top box is starting its scheduled channel changes late. Currently it's running 10 minutes late. -snipped for brevity- Have you tried the newest [f207] firmware? More Q&As , with clock info, he http://www.avsforum.com/avs-vb/showthread.php?t=1099071 Upgradeable firmware for the STB? I think we're confusing two different product here; the STB and the DVR. |
#22
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
Because the product called the DTV Pal works with ATSC. It's just
a name. (It originally was called the TR-50 (not TR-40, the -40 was a CECB)). I think ya got it backward: The DTVPal is equivalent to TR-40; just a ATSC converter. the DTVPal DVR -- a.k.a. TR-50 -- is a ATSC converter and DVR rolled into one. -- John English |
#23
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
akaSoetoro wrote: Eeyore wrote: Andy from Dover wrote: "Eeyore" wrote DaveC wrote: Model, make etc ? DTV Pal (also marketed under the model name TR-40) by Dish Network. Means nothing to me. Why are you using PAL in the USA ? Not PAL as in the video standard but Pal as in that's what the set-top box is called. Kind of like VCR meant any format (VHS or Beta) Video Casette Recorder in the US and not a specific format of Video Casette Recorder or Video. How deliberately confusing is that ? PAL = Phase Alternate Line. http://en.wikipedia.org/wiki/PAL NTSC = never twice the same colour. http://www.ee.surrey.ac.uk/Contrib/WorldTV/why.html Eeyore=Idiot There is another acronym. PAL = Pure Aesthetic Loveliness. Graham |
#24
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
Alan wrote: Eeyore writes: How deliberately confusing is that ? PAL = Phase Alternate Line. http://en.wikipedia.org/wiki/PAL NTSC = never twice the same colour. http://www.ee.surrey.ac.uk/Contrib/WorldTV/why.html Apparently only to someone who has had their brain fried by the 50 Hz flicker of slow television. It has been accepted by many, that NTSC has given *better* color than PAL ever since solid state electronics have made phase response stable in the early 1970's. And how do you justify that statement ? We were broadcasting TV in Britain quite some time before WW2 sonny. Graham |
#25
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
DaveC wrote: See this link, similar problem. Could be the station clock is off ... No such luck. Each station is spot on and agrees with my computer's clock (I'm using a computer as a DVR). I assume he meant your cable provider's clock is off, not the programme providers themselves. Graham |
#26
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
It has been accepted by many, that NTSC has given *better* color
than PAL ever since solid state electronics have made phase response stable in the early 1970's. This is wrong for several reasons. First, NTSC originally incorporated phase alternation, but it was dropped because (in the early '50s) there was no easy way to take advantage of its advantages. (I have the issue of Electronics magazine to prove this. The earliest NTSC proposals also used equal-bandwidth R & B primaries. In short, NTSC was basically PAL.) Phase alternation was also dropped because the US microwave transmission had excellent group-delay characteristics, which European transmission did not. So phase-alternation's ability to automatically compensate for hue errors (caused by non-linear group delay) -- at the cost of desaturation -- was not much of an advantage. Strictly speaking, NTSC is "better" than PAL because it provides wider color bandwidth. The systems are pretty "Tweedle-Dum" and "Tweedle-Dee". They are slightly different ways of doing exactly the same thing. The reason NTSC too-often didn't look very good was simply lack of concern. |
#27
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
William Sommerwerck wrote: It has been accepted by many, that NTSC has given *better* color than PAL ever since solid state electronics have made phase response stable in the early 1970's. This is wrong for several reasons. First, NTSC originally incorporated phase alternation, but it was dropped because (in the early '50s) there was no easy way to take advantage of its advantages. (I have the issue of Electronics magazine to prove this. The earliest NTSC proposals also used equal-bandwidth R & B primaries. In short, NTSC was basically PAL.) Phase alternation was also dropped because the US microwave transmission had excellent group-delay characteristics, which European transmission did not. So phase-alternation's ability to automatically compensate for hue errors (caused by non-linear group delay) -- at the cost of desaturation -- was not much of an advantage. Strictly speaking, NTSC is "better" than PAL because it provides wider color bandwidth. The systems are pretty "Tweedle-Dum" and "Tweedle-Dee". They are slightly different ways of doing exactly the same thing. The reason NTSC too-often didn't look very good was simply lack of concern. I thought the audio carrier frequency was lower with NTSC than PAL, giving PAL a larger video bandwidth. Yup NTSC's audio carrier is 1.5MHz lower acc to Wikipedia. Plus PAL had 100 more lines. That's probably where the bandwidth went. Then wasn't there a 'PAL + ' that recovered video above the audio signal. Never knew how far that got. Not sure what to make of this. http://en.wikipedia.org/wiki/Pal%2B Graham |
#28
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
On Tue, 12 May 2009 17:54:57 +0100, Eeyore wrote:
It has been accepted by many, that NTSC has given *better* color than PAL ever since solid state electronics have made phase response stable in the early 1970's. And how do you justify that statement ? We were broadcasting TV in Britain quite some time before WW2 sonny. Not in colour IIRC, QE2's coronation (1953) was the first colour TV broadcast. |
#29
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
I assume he meant your cable provider's clock is off, not the programme
providers themselves. Graham I have no cable service. This is all over-the-air reception (DTV) in the USA. The stb (set-top-box) converter (DTV-to-NTSC analog) apparently receives time code from one or more of the local DTV broadcast stations and synchronizes its clock to the station's. Something in this process is broken. Either the broadcaster's time info is not being collected properly, or the stb's' clock is not being synchronized. Hence my questions. -- DaveC This is an invalid return address Please reply in the news group |
#30
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
Nobody wrote: On Tue, 12 May 2009 17:54:57 +0100, Eeyore wrote: It has been accepted by many, that NTSC has given *better* color than PAL ever since solid state electronics have made phase response stable in the early 1970's. And how do you justify that statement ? We were broadcasting TV in Britain quite some time before WW2 sonny. Not in colour No, but we were well ahead. IIRC, QE2's coronation (1953) was the first colour TV broadcast. I doubt that myself. I recall my Dad buying one of the new dual standard UHF 625 line sets plus the original VHF 405 line in the mid 60s just in time to see the Apollo landings on BBC2 on 625 line. That was in B&W. There was a selector switch for 405 / 625 ( VHF / UHF ) on the front and each had 4 channel presets available. I 'adopted' that ( tubed ) set once we got a transistorised colour one and kept it for years. I think Colour came to the UK on the UHF 625 line standard in the late 60s. I recall seeing 'Cream' playing their last concert at the Albert Hall in colour on BBC2 as a 15 year old IIRC and that would be 1969. It took a long time for the commercial stations to catch up. Graham |
#31
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
"DaveC" wrote in message obal.net... I assume he meant your cable provider's clock is off, not the programme providers themselves. Graham I have no cable service. This is all over-the-air reception (DTV) in the USA. The stb (set-top-box) converter (DTV-to-NTSC analog) apparently receives time code from one or more of the local DTV broadcast stations and synchronizes its clock to the station's. Something in this process is broken. Either the broadcaster's time info is not being collected properly, or the stb's' clock is not being synchronized. Hence my questions. -- DaveC This is an invalid return address Please reply in the news group Well someone goofed. I'd say look for a RTC crystal (32.7khz thingy). If not there then they are using the main processor clock. It could be just that the parallel crystal caps are the wrong value, or the crystal is a cheap cut. Experiment, make a oven and keep a constant temp, does it loose time? The programmer forgot to resync the clock from time to time. Cheers |
#32
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
In article Eeyore writes:
Alan wrote: Eeyore writes: How deliberately confusing is that ? PAL = Phase Alternate Line. http://en.wikipedia.org/wiki/PAL NTSC = never twice the same colour. http://www.ee.surrey.ac.uk/Contrib/WorldTV/why.html Apparently only to someone who has had their brain fried by the 50 Hz flicker of slow television. It has been accepted by many, that NTSC has given *better* color than PAL ever since solid state electronics have made phase response stable in the early 1970's. And how do you justify that statement ? The color gamut of NTSC is wider than PAL. The frame rate of system M provides visibly better motion rendition (at least to someone who has been watching system M for years, 50 Hz systems are much poorer at rendering motion). The phase errors that motivated the creation of PAL basically ceased to exist in the early '70s when solid state electronics became stable enough to hold phase without visible errors. We were broadcasting TV in Britain quite some time before WW2 sonny. In black and white. In fact, black and white broadcasts were occuring in the U.S. before WW2 as well. Alan |
#33
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DTV Pal running slow
Eeyore wrote:
akaSoetoro wrote: Eeyore wrote: Andy from Dover wrote: "Eeyore" wrote DaveC wrote: Model, make etc ? DTV Pal (also marketed under the model name TR-40) by Dish Network. Means nothing to me. Why are you using PAL in the USA ? Not PAL as in the video standard but Pal as in that's what the set-top box is called. Kind of like VCR meant any format (VHS or Beta) Video Casette Recorder in the US and not a specific format of Video Casette Recorder or Video. How deliberately confusing is that ? PAL = Phase Alternate Line. http://en.wikipedia.org/wiki/PAL NTSC = never twice the same colour. http://www.ee.surrey.ac.uk/Contrib/WorldTV/why.html Eeyore=Idiot There is another acronym. PAL = Pure Aesthetic Loveliness. Or PAL = Peace At Last. -- W . | ,. w , "Some people are alive only because \|/ \|/ it is illegal to kill them." Perna condita delenda est ---^----^--------------------------------------------------------------- |
#34
Posted to sci.electronics.design,sci.electronics.repair,alt.engineering.electrical,alt.tv.tech.hdtv
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DTV Pal running slow
Upgradeable firmware for the STB?
A reply from the manufacturer's support department confirms that no f/w upgrades are available for the STB. Only the DVR model is supported for f/w upgrades. -- DaveC This is an invalid return address Please reply in the news group |
#35
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
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#36
Posted to sci.electronics.design,sci.electronics.repair,alt.tv.tech.hdtv
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DTV Pal running slow
Except the original poster referred to using it for recording, so
it was obvious that he was just shortening the name of the DTVPal DVR. It was another poster who didn't understand that and mentioned the TR-40. Alan It's a TR-40, just a converter. I'm using a computer to do the DV recording. Dave (the OP). -- John English |
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