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If you have no signal coming into a digital converter box, you either have no service or you have a broken connection between the service provider and the box.
If you have no signal coming out of a digital converter box, you either have no service, or you have a broken box, or you have some kind of short on the output.
If you have no service, then you need to contact the service provider. If the box or the circuitry is bad, you need to fix it, or you need to contact the service provider.
Any other meaning to this question constitutes a request to know how to defeat the security of a digital converter box. That is an illegal activity, and WiKi Answers does not provide answers for those type of questions.
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What is the difference between analog and digital data transmission?
This is essentially the same question as the difference between analog and digital. With analog electronics a voltage is used to represent (or to be an analogy for) some physical attribute in the real world. So for an analog transmission, at its simplest, a sound signal (say) is converted to a voltage, the voltage sent down a cable, then at the other end the voltage converted back into sound with a loudspeaker. With a digital system, the physicial attribute is measured and sent as a series of numbers, the numbers being converted to binary. For a digital transmission, the sound signal is converted to a series of numbers, sent as binary, and converted back to a sound signal at the other end. The advantages of digital is that it makes multiplexing much easier - making it easier to put many signals down the same physical cable. It also makes compressing the signal much easier - this is particularly effective for digital television transmission; 30-40 digital channels can be sent over the same bandwidth as 4 or 5 uncompressed analog channels. Also, digital is much more resiliant against noise - the digital receiver has to make a decision about each bit - is it there or not; noise can be pretty extreme before this becomes impossible, with analog, once noise is added its very difficult to remove it. The historical disadvantage of digital is that digital encoding and decoding equipment was expensive compared with the analog. Over the last 10 years or so, digital electronics has become much cheaper and more powerful.
What is the importance of convolution in system characterization?
Convolution is used in DIGITAL SIGNAL PROCESSING to predict the output of the system with only a few limited number of samples of the input signal and a few limited number of samples of the impulse response of the system. i.e. if we can state that if you know the impulse response of a system then you can predict the behavior of the system for any signal provided it as an input. It also helps to show that the system is stable or not i.e. we say that a system is stable if its impulse response is absolutely summable or square summable (both are sufficient conditions but not necessary conditions).
What are the Advantages of digital transmission over analog?
Hi,1) Digital signals do not get corrupted by noise etc. You are sending a series of numbers that represent the signal of interest (i.e. audio, video etc.)2) Digital signals typically use less bandwidth. This is just another way to say you can cram more information (audio, video) into the same space.3) Digital can be encrypted so that only the intended receiver can decode it (like pay per view video, secure telephone etc.)There are others, but this is three of the biggies.Hi!Following are the Advantages of Digital Transmission over analog transmission.1. The signal is exact. For example, Digital formats like PCM (Pulse Code Modulation) can hold the exact digital format of sounds.2. Digital signals can checked for errors. Generally, all digital transmission methods use 'head labels' to provide better checking facilities. Head label may contain how many packets may need to complete the transmission, what is the sequence number of each packet of data, acknowledgment labels etc.3. A variety of services can afford over one line. For example, IpTV connection can used to watch cable TV channels while browsing the Internet through a PC using same line. This line can also used to make a phone call at the same time.4. Digital data can be compressed and therefore possible to pass over higher bandwidths. Any digital data; data, image, video, voice can be compressed.5. More secure. Digital data can be encrypt using an encryption method. Only the dedicated receiver can decode the message.6. Supports data integrity. Simple to integrate voice, video and data. Digital transmission provides easier way to integrate different digital formats.7. Digital transmission provides higher maximum transmission rates via medium such as optical fibers. Typically, digital transmissions use less bandwidth.Hope this will help you!(H.W Thushara Indika from Bandarawela - Sri Lanka)
Why is it necessary to modulate the picture and sound signals before transmission?
To avoiding the noise signal effect.Because the modulation is a technic which providing a high characteristic to transmitting the signal on long or short distance.Because the modulated signal received as high bandwidth,high performance of received signal and the modulation Technic is provide a less hight of antenna in wireless transmission which is expressed in the term :(hight of antenna=λ/4).
Is low bandwidth signal has more power than high bandwidth signal?
no,because generally the lower frequency side existed for lower bandwidth,and higher frequency side existed higher bandwidth,so thus we can say that lower bandwidth has generally has lower power as compared to higher bandwidth.
Why you need ahd cnverter box if you have anew plasma tv?
Does you new plasma have a digital tuner? If not then that's why you need a converter or just a cable box so you can get a signal to your plasma. With a converter box you will receive free local tv channels in digital form. You could say HD almost without paying for it.
Why would the DVD recorder say no signal when the TV gets a signal through the recorder?
One possibility: if the signal is a digital broadcast and you have a digital-capable TV but the DVR has an analog tuner, the DVR would not see a recognizable signal, but the digital signal would pass through to the TV.
What SD card is required for digital video?
It say's it on the box.....of what it can hold
Why does your box only say boot then switch to a half circle with lines in the middle and not turn on?
Why do I get lines on my converter box after it says boot
What are your local channels for digital converter box?
This varies from Cable TV companies so it is hard to say. The local channels are usually the lower number channels. Call your Cable television company and ask if they have a website to download their channel guide.
Does analog signals suffer from attenuation more than digital signals?
With an analog signal, it shrinks with distance. So its gets harder to tell when it is "there". A digital signal shrinks with distance. So as long as it is detectable, it is "there". So as a wave gets attenuated and then not by, say, variations in weather, to respond to an analog signal gets more difficult. With a digital wave, if you can find it -- it's there.
What is a D-to-A converter?
It's an electronic circuit that converts digital signals to analog signals. It finds application in something like, say, an iPod. The tunes are stored digitally, and the next-to-last stage, the D-to-A converter makes the aforementioned conversion. Then a little audio (analog) amplifier pumps up the signal and drives the headphones. Bach, Beethoven or Brahms? A helpful link is provided.
What is difference between ask and am?
The most fundamental difference, I would say, is that Amplitude Modulation (AM) is a kind of Analog Modulation Technique (the modulation is applied continuously in response to the analog information signal) where Amplitude Shift Keying is a type of Digital Modulation Technique ( an analog carrier signal is modulated by a discrete signal, digital modulation methods can be considered as digital-to-analog conversion, and the corresponding demodulation or detection as analog-to-digital conversion. The changes in the carrier signal are chosen from a finite number of M alternative symbols).
If you bought a up to date television do you need a converter box?
We are not able to receive MSNBC from our provider of cable service, that is Cablevision. They are forcing us to rent another box from them even though we have a new LCD/HD digital set. $72/year is not huge but multiply this times the number of customers they have and you are looking at one big scam. What say you?
What small electrical component does the same thing as a modem?
I wouldn't say an "electrical" component, but a modem is very similar to a DAC (digital-to-analog converter) or ADC (analog-to-digital converter) like in sound chipsets (or sound cards) preinstalled in a computer or a dedicated separate sound system used in a home theater or a production studio.
Audio and Video Converter Cables?
These days, audio and video cables seem to come in every shape and size under the sun. Whether you are trying to connect a new DVD player to an old TV or an old VCR to a new HDTV, there are plenty of options for how to connect all of your audio and video devices.Analog vs. Digital CablesMost connectors of older audio and video equipment is analog, meaning a variable change in voltage across a line. This is in contrsat to newer equipment which is digital, meaning a series of 1's and 0's across the line. These two methods are a bit tricky. Analog connectors can easily be transferred to other analog sources. An example of this would be a headphone to RCA adapter to connect, say, an iPod to a theater system through two Red and White cables. Digital cables can also be interchanged fairly easily as well, such as a DVI to HDMI cable, typically used to connect an older computer with a newer TV. The problem comes in, however, when you are converting from an analog signal to a digital signal.Connector BoxesTypically, in order to convert an analog signal to a digital signal, a converter box must be used. A converter box takes the analog signal and is able to create a digital signal from that, though these boxes due take up a bit of space (typically ranging in size from a deck of cards to a power supply size). One problem that occasionally comes up with digital converters is copy protection. Some standards, such as HDMI, have an optional Anti-Piracy flag that content makers and delivery systems can implement (DVD makers, DVD Players, Cable Boxes, etc.). These are in an effort to prevent High Definition signals from easily being copied. Special boxes can be purchased that are able to circumvent these protections, though they are extremely expensive and their legality may be subject to varying laws depending on where you live.Overall, it is typically fairly easy to convert signals from the sources available to what is needed. Often times these can be purchaesd at a local electronics store or online for much cheaper. Whether you are converting from analog to digtial, digital to digital, or analog to analog, typically the right cable is only a little bit of research away.
How do you say digital literacy in spanish?
"digital literacy" in Spanish is "alfabetizacion digital".
