CECB that retains power-on - AVS Forum
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Old 10-16-2009, 01:34 PM - Thread Starter
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I've been using Channel Master CM-7000 as an analog source for hotel headends. Any demodulator/decoder used in that capacity must retain its "power-on" status after a power interruption. It seems that the CM-7000 is now in very short supply, but when I look up the product descriptions on other CECBs, the only other ones that refer to status volatility say that after a power interruption, they ony restore to "standby" status, which I take it does not include outputting the selected video and audio.

Does anyone know of any other CECBs that maintain their power-on status after a power interruption?
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Old 10-16-2009, 01:56 PM
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Quote:
Originally Posted by AntAltMike View Post

I've been using Channel Master CM-7000 as an analog source for hotel headends. Any demodulator/decoder used in that capacity must retain its "power-on" status after a power interruption. It seems that the CM-7000 is now in very short supply, but when I look up the product descriptions on other CECBs, the only other ones that refer to status volatility say that after a power interruption, they ony restore to "standby" status, which I take it does not include outputting the selected video and audio.

Does anyone know of any other CECBs that maintain their power-on status after a power interruption?

Perhaps you should consider a UPS to feed your boxes? I think you are going to be lucky to find much selection of CECB's at this late date.

I love the digital transition. The voices in my head just say 0 and 1 now.
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Old 10-16-2009, 03:23 PM
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I believe I've read at least one other box did this (it's a important feature for anyone using their CECB to feed something like a DVDR or VCR). It's one of the reasons I went with the CM-7000 which as you said has this feature.
I can't remember off hand which other box had this feature, possibly the Zinwell or Pal would make sense? since the have event timers to feed recording devices.

I'm guessing the OP might not want a UPS for the maintenance or cost factor?
I'm also guessing this post should be in the CECB forum, KenH?
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Old 10-16-2009, 04:17 PM - Thread Starter
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Oops! I thought I had opened it in the CECB forum.
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Old 10-16-2009, 06:10 PM
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Moved.

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Old 10-16-2009, 09:39 PM
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The iNet SSR1921 powers its self on when ever power is applies.
Wonder if the Tivax does the same thing?

http://www.avsforum.com/avs-vb/showt...highlight=inet
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Old 10-16-2009, 10:31 PM - Thread Starter
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Just ordered an iNet SSR1921 for $45 plus 7 shipping from EZDTV.com, which is $18 less than the price of a CM-7000 on Channel Master's online site.
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Old 10-17-2009, 01:32 PM
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Quote:
Originally Posted by AntAltMike View Post

I've been using Channel Master CM-7000 as an analog source for hotel headends. Any demodulator/decoder used in that capacity must retain its "power-on" status after a power interruption. It seems that the CM-7000 is now in very short supply, .........
Does anyone know of any other CECBs that maintain their power-on status after a power interruption?

Ebay looks like the only source for CM-7000s these days.

Earlier in the year there were some posts from a guy (user name dp3659) that was using Zenith DTT901s for a similar application. His trick was to jumper the power switch and one of the up down buttons, this caused the Zeniths to handle power interuptions. Can't find the original posts but some quotes from an e-mail are:

"I have modified about 12 units like this and am using them in small cable system headends. They run 24 hours a day and so far have worked great."

"Just remember to place a jumper across the power switch and one of the channel selection switches and it will work fine."

You would have to get the Zeniths (also sold as the "Insignia" model) on ebay but they sold a lot more of them than the CM-7000.
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Old 12-18-2009, 08:09 AM - Thread Starter
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So far, so good with the iNet SSR1921s. I've installed a total of six of them in five different headends, and none have failed in any way. Five of my Channel Master CM-7000s that were set to local broadcast channel 7 WJLA-ABC had been losing their audio every few days and had to be "excited" to restore it, either by changing the channel and changing it back, or by powering them down and back up, but the iNets have had no problem processing that audio.
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Old 12-22-2009, 03:06 PM
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Quote:
Originally Posted by AntAltMike View Post

.....Five of my Channel Master CM-7000s that were set to local broadcast channel 7 WJLA-ABC had been losing their audio every few days.....

I am curious,
are these on a live UPS supply unit?

We have power grid change overs here early every mourning.

Most of the CECB's I have tried here hate those short interuptions and freeze.

Their charge pump style supplies do well meeting energy saving guidelines,
but they have very little carry-over with grid glitches.

Although I did get a bit draconian and put in an
ubber electrolytic capacitor on a Zenith unit as a test.

But I simply put the remaining on an older small UPS
I run live from a car battery and all freezes stopped.

I'll gladly buy those CM's if you want to unload them.

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Old 12-22-2009, 03:30 PM - Thread Starter
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Quote:
Originally Posted by WeThePeople View Post

I am curious,
are these on a live UPS supply unit?

We have power grid change overs here early every mourning.

Most of the CECB's I have tried here hate those short interuptions and freeze....

I don't have them on a UPS, but they are in five different cities in three states, and the picture doesn't freeze up, just the audio does, and it happens an the same time to all of the ones that are set on WJLA 7.1 (actual 7). I won't be getting rid of them because they serve me reliably when set to any of the other local channels.

I just received three more iNet SSR1921s today. They are now my CECB of choice for headend applications.
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Old 12-23-2009, 09:29 PM
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Must be something with WJLA, because I get audio de-sync's regularly using my Zinwell's.
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