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If you’ve used HDMI with your TV before, then you’ve probably seen the abbreviation ARC and/or eARC on your device’s connection panel. In fact, you’ve likely used ARC/eARC without even knowing it! But what exactly do these terms mean? How do they improve the TV audio experience? Let’s clear the confusion.
When HDMI was released in 2002, it sought to simplify the process of using individual cables to send audio and video data to your TV. Think about your old game system or DVD player — rather than relying on two or even three separate connections to manage video and audio, HDMI condensed it all into one cable, streamlining device setup while containing more than enough power to handle the bandwidth of an HD signal. While HDMI is an excellent option when using your TV’s built-in speakers as an audio output, things become a bit more complicated when throwing an external speaker system into the mix. That’s where ARC and eARC come into play.
What Is ARC?
A feature introduced on the arrival of HDMI version 1.4, ARC (Audio Return Channel) improves the carrying capacity of standard HDMI cables. Traditionally, HDMI was developed to send video and audio in one direction (i.e., from your source device to your TV). That meant if you wanted to use an external sound device such as a soundbar or speaker system, then you’d need to utilize an analog or optical cable (now largely obsolete) to send your audio to your allocated playback device. While capable of sending audio and video in a single direction, ARC also features an audio return path, allowing audio signals from your TV to transfer to your playback device within the same connection. This cuts out the optical cable altogether. Both diagrams in the figure below achieve the same goal: connect TV audio to an external device. However, since ARC performs the duties of both the HDMI and audio cable, the diagram on the right does not need an additional audio cable to operate.
What Is eARC?
eARC (enhanced Audio Return Channel) functions more or less the same as ARC with one significant difference: increased bandwidth. By utilizing the boosted transfer rates supplied by HDMI’s 2.1 architecture, eARC boasts enough power to support uncompressed 5.1 or 7.1 surround sound audio as well as spatial audio formats such as Dolby Atmos, maximizing achievable sound quality and immersion when using external soundbars or speaker systems. Unlike standard ARC, eARC also provides onboard lip-sync correction, which automatically detects processor delays to keep audio and visuals in line at all times. As eARC connections are more modern and not always included in every setup on the market, eARC’s built-in ARC fallback feature ensures that your cable still supports standard ARC protocol when a device in your setup does not support eARC.
Do I Need ARC or eARC?
If you’re going to use your TV’s built-in speakers, then the answer is simple: neither. However, if you intend to use an external speaker system such as a soundbar, then ARC/eARC is the way to go. Casual listeners and movie buffs using a separate speaker should be more than happy with ARC in their setup because it cuts down on cables and enables control over your TV’s playback settings from a single remote. That said, if you’d like to retain an uncompressed audio signal or employ the benefits of Dolby Atmos or other spatial audio formats in your home theater setup, then eARC is likely the better route to take. No matter which format you choose, always check beforehand that your equipment supports it to avoid future headaches. Likewise, ARC and eARC require High Speed or Ultra High Speed HDMI cables in order to function properly. When in doubt, use an Ultra High Speed HDMI cable; these HDMI cables are backward compatible to support any eARC or lesser setup you may be using. The handy table below outlines the specific capabilities of ARC and eARC in comparison with old-school optical connections.
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Sports Bar Configuration
Allonis is renowned for the easiest to use Audio / Video / Lighting control system for bar tenders and wait staff. Now, we strive to also make it easiest to get a quote, and to install to decrease the cost, time and stress of installing a professional control system. To do, so, we need to ask a couple of questions that will impact the system cost, the estimated time to deliver and the programming of the end system.
The system is HIGHLY customizable and configurable. Of course, all time Allonis spends on the project is billable.
So, here are the standard selections that are most popular that are the most cost effective:
- User interface device: iPad (under 5 devices connected at same time)
- 1.5U standard equipment mount case
- Uninterupptable Power Supply is highly recommended (and available from Allonis that integrate with myServer 6)
Q1: Is this a Bar or a Restaurant or Both
(Bar / Restaurant / Both / Other)
Q2: When would you like to install the system?
(Soon / No Rush / By X Date / Don't know)
Q3: Do you already have an installer?
(Yes / No - need one / I am an Integrator / I will install / Don't know)
Q4: Do you want to purchase Allonis's Remote Configuration / Programming Services?
(Yes / No)
Q4: How many TVs will be controlled?
(0 - 100)
Q4b (if Q4 >0): Do you want the control system to be able to also control TVs on / off?
(Yes / No / Tell Me More)
Q4c (if Q4>0): What brand(s) of TVs are to be controlled?
(All are same Brand: LG / Samsung / Sony / Sharp / Phillips / Roku / TCL / Not same brand)
Q4d (if q4c = Not same brand) Please answer in the order that the TVs are to be viewed on the user interface (ie: 1,2,3...)
(LG / Samsung / Sony / Sharp / Phillips / Roku / TCL / Other dynamic list based on how many TVs)
Q4e (if Q4 >0): How many feet is that TV from the equipment rack?
(under 50 / 220 / 330 / over 330) dynamic list next to TV brand for that TV
What Video resolution should the system support? (most sports bars use 1080p content sources)
(1080p / 2K / 4K:30 / 4K:60 / 8K)
Q5 (if Q4>0): How many Video walls will the system have?
(None, 1, 2, More than 2)
Q5b (if Q5> 0) How large is Video Wall 1? (2x2 TVs / 3x3 / Larger than 3x3)
Q6 Do you want the Control System to also control the Audio system?
(Yes / No / Tell me more)
Q6b (if Q6 = Yes) Do you already have an audio matrix? Brand?
(Allonis / Allen and Heath / Atlas / DBX / QSC / RTI / Other)
Q6c (if Q6 = Yes) Do you already have an amplifier? Type?
(70/100 volt / 2,4 or 8 ohm / I don't know)
Q7C (if Q6=Yes) Do you need speakers? If so, what type and quantity?
(Pendant / In wall / Subwoofer / None / Don't know) (select one or all)
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Aspect Ratio Calculator
Enter the units of width and units of height of what you would like to measure and get your aspect ratio.
Examples of units include pixels, feet, meters, and video wall panels. Any 2 dimensional units such as video wall panels must be square (1:1) for an accurate answer.
The aspect ratio is commonly written as W:H but can also be written as N:1, so our calculator includes both versions.
Use this tool to calculate the aspect ratio of your mobile or rental LED screen, TV, video file, image file, and more.
Aspect ratio defined
An aspect ratio is the proportion of an object’s width to its height, most commonly written as W:H, with W representing simplified units of width and H represents simplified units of height. Aspect ratios may also be written as N:1, where N = W/H. For example, a 16:9 aspect ratio can also be written as 1.78:1 (16/9:1).
Aspect ratios are most commonly used for digital images, videos, or display screens. The primary unit of measurement for aspect ratios is pixels, but they can be measured in other units such as feet, meters, LED panels, or square (1:1) widgets.
Aspect ratio examples
https://insaneimpact.com/wp-content/uploads/2022/07/simple-aspect-ratio-examples-1-300x180.jpg 300w, https://insaneimpact.com/wp-content/uploads/2022/07/simple-aspect-ratio-examples-1-768x461.jpg 768w" alt="screen resolution vs aspect ratio" width="1000" height="600" class="attachment-full size-full wp-image-13079 entered lazyloaded" style="box-sizing: border-box; border: none; height: auto; max-width: 100%; vertical-align: middle; border-radius: 5px; box-shadow: none; display: inline-block; width: 700px;" decoding="async" data-lazy-srcset="https://insaneimpact.com/wp-content/uploads/2022/07/simple-aspect-ratio-examples-1.jpg 1000w, https://insaneimpact.com/wp-content/uploads/2022/07/simple-aspect-ratio-examples-1-300x180.jpg 300w, https://insaneimpact.com/wp-content/uploads/2022/07/simple-aspect-ratio-examples-1-768x461.jpg 768w" data-lazy-sizes="(max-width: 1000px) 100vw, 1000px" data-lazy-src="https://insaneimpact.com/wp-content/uploads/2022/07/simple-aspect-ratio-examples-1.jpg" data-ll-status="loaded" />
2:1
A 2:1 aspect ratio indicates 2 parts of width for every 1 part of height. Examples of 2:1 aspect ratios are 1,000 pixels x 500 pixels (1000×500), 600 ft. x 300 ft., and 20 led panels x 10 led panels (1:1 panels). 2:1 aspect ratios are classified as wide or landscape, since the width is greater than the height. Additional examples of landscape ratios would be 3:1, 16:9, and 4:3.
1:1
A 1:1, or square aspect ratio indicates a width equal to height. Examples of square aspect ratios include 200 pixels x 200 pixels (200×200), 1m x 1m, and 50 widgets x 50 widgets.
1:2
A 1:2 aspect ratio indicates a height that is double the width. Examples of 1:2 ratios are 100 pixels x 200 pixels, 450 ft. x 900 ft. and 12 square tiles x 24 square tiles (i.e. LED panels). A 1:2 aspect ratio is considered a tall or portrait ratio. Any aspect ratio with a height greater than width is classified as such. Additional portrait ratios include 2:3, 9:16 and 1:5. Aspect ratios are independent of size, so a 3 ft. wide by 3 ft. tall box would have the same aspect ratio as a 1mm wide by 1mm high pixel (1:1, square).
Common aspect ratios
https://insaneimpact.com/wp-content/uploads/2022/07/common-aspect-ratios-1-200x300.jpg 200w, https://insaneimpact.com/wp-content/uploads/2022/07/common-aspect-ratios-1-683x1024.jpg 683w, https://insaneimpact.com/wp-content/uploads/2022/07/common-aspect-ratios-1-768x1152.jpg 768w" alt="aspect ratio infographic" width="1000" height="1500" class="attachment-full size-full wp-image-13083 entered lazyloaded" style="box-sizing: border-box; border: none; height: auto; max-width: 100%; vertical-align: middle; border-radius: 0px; box-shadow: none; display: inline-block; width: 600px;" decoding="async" data-lazy-srcset="https://insaneimpact.com/wp-content/uploads/2022/07/common-aspect-ratios-1.jpg 1000w, https://insaneimpact.com/wp-content/uploads/2022/07/common-aspect-ratios-1-200x300.jpg 200w, https://insaneimpact.com/wp-content/uploads/2022/07/common-aspect-ratios-1-683x1024.jpg 683w, https://insaneimpact.com/wp-content/uploads/2022/07/common-aspect-ratios-1-768x1152.jpg 768w" data-lazy-sizes="(max-width: 1000px) 100vw, 1000px" data-lazy-src="https://insaneimpact.com/wp-content/uploads/2022/07/common-aspect-ratios-1.jpg" data-ll-status="loaded" />
16:9
https://insaneimpact.com/wp-content/uploads/2022/07/1-16-9-aspect-ratio-1-300x180.jpg 300w, https://insaneimpact.com/wp-content/uploads/2022/07/1-16-9-aspect-ratio-1-768x461.jpg 768w" alt="home tv aspect ratio 16-9" width="1000" height="600" class="attachment-large size-large wp-image-13097 entered lazyloaded" style="box-sizing: border-box; border: none; height: auto; max-width: 100%; vertical-align: middle; border-radius: 0px; box-shadow: none; display: inline-block; width: 600px;" decoding="async" data-lazy-srcset="https://insaneimpact.com/wp-content/uploads/2022/07/1-16-9-aspect-ratio-1.jpg 1000w, https://insaneimpact.com/wp-content/uploads/2022/07/1-16-9-aspect-ratio-1-300x180.jpg 300w, https://insaneimpact.com/wp-content/uploads/2022/07/1-16-9-aspect-ratio-1-768x461.jpg 768w" data-lazy-sizes="(max-width: 1000px) 100vw, 1000px" data-lazy-src="https://insaneimpact.com/wp-content/uploads/2022/07/1-16-9-aspect-ratio-1.jpg" data-ll-status="loaded" />
16:9 ratios (1.78:1) are the most commonly seen and used aspect ratio. They are today’s standard ratio for TV’s, monitors and portable devices. Most video is shot in a 16:9 resolution or close variation.
Common 16:9 resolutions
- 1024×576
- 1152×648
- 1280×720 (HD)
- 1366×768
- 1600×900
- 1920×1080 (full HD)
- 2560×1440
- 3840×2160 (4K UHD)
- 7,680 x 4,320 (8K UHD)
1.85:1 AND 2.39:1
https://insaneimpact.com/wp-content/uploads/2022/07/4-cinema-aspect-ratio-1-300x180.jpg 300w, https://insaneimpact.com/wp-content/uploads/2022/07/4-cinema-aspect-ratio-1-768x461.jpg 768w" alt="Cinema aspect ratio" width="1000" height="600" class="attachment-full size-full wp-image-13101 entered lazyloaded" style="box-sizing: border-box; border: none; height: auto; max-width: 100%; vertical-align: middle; border-radius: 0px; box-shadow: none; display: inline-block; width: 600px;" decoding="async" data-lazy-srcset="https://insaneimpact.com/wp-content/uploads/2022/07/4-cinema-aspect-ratio-1.jpg 1000w, https://insaneimpact.com/wp-content/uploads/2022/07/4-cinema-aspect-ratio-1-300x180.jpg 300w, https://insaneimpact.com/wp-content/uploads/2022/07/4-cinema-aspect-ratio-1-768x461.jpg 768w" data-lazy-sizes="(max-width: 1000px) 100vw, 1000px" data-lazy-src="https://insaneimpact.com/wp-content/uploads/2022/07/4-cinema-aspect-ratio-1.jpg" data-ll-status="loaded" />
1.85:1 (37:20) and 2.39:1 (239:100) are the 2 most commonly used aspect ratios for movies. 1.85:1 is sometimes called widescreen and 2.39:1 is called anamorphic widescreen. These 2 ratios are wider than the 16:9 ratio, allowing videographers to capture a wider horizontal frame.
If you have ever noticed black horizontal bars on the screen when watching a movie at home, that is because your TV is 16:9 and your film is a wider aspect ratio.
https://insaneimpact.com/wp-content/uploads/2022/07/anamorphic-wide-screen-aspect-ratio-705x423-1-300x180.jpg 300w" alt="Aspect ratio screen wide" width="705" height="423" class="attachment-full size-full wp-image-13102 entered lazyloaded" style="box-sizing: border-box; border: none; height: auto; max-width: 100%; vertical-align: middle; border-radius: 0px; box-shadow: none; display: inline-block; width: 450px;" decoding="async" data-lazy-srcset="https://insaneimpact.com/wp-content/uploads/2022/07/anamorphic-wide-screen-aspect-ratio-705x423-1.jpg 705w, https://insaneimpact.com/wp-content/uploads/2022/07/anamorphic-wide-screen-aspect-ratio-705x423-1-300x180.jpg 300w" data-lazy-sizes="(max-width: 705px) 100vw, 705px" data-lazy-src="https://insaneimpact.com/wp-content/uploads/2022/07/anamorphic-wide-screen-aspect-ratio-705x423-1.jpg" data-ll-status="loaded" />
21:9
https://insaneimpact.com/wp-content/uploads/2022/07/3-21-9-aspect-ratio-example-1-300x180.jpg 300w, https://insaneimpact.com/wp-content/uploads/2022/07/3-21-9-aspect-ratio-example-1-768x461.jpg 768w" alt="16:9 computer screen curved aspect ratio" width="1000" height="600" class="attachment-large size-large wp-image-13103 entered lazyloaded" style="box-sizing: border-box; border: none; height: auto; max-width: 100%; vertical-align: middle; border-radius: 0px; box-shadow: none; display: inline-block; width: 600px;" decoding="async" data-lazy-srcset="https://insaneimpact.com/wp-content/uploads/2022/07/3-21-9-aspect-ratio-example-1.jpg 1000w, https://insaneimpact.com/wp-content/uploads/2022/07/3-21-9-aspect-ratio-example-1-300x180.jpg 300w, https://insaneimpact.com/wp-content/uploads/2022/07/3-21-9-aspect-ratio-example-1-768x461.jpg 768w" data-lazy-sizes="(max-width: 1000px) 100vw, 1000px" data-lazy-src="https://insaneimpact.com/wp-content/uploads/2022/07/3-21-9-aspect-ratio-example-1.jpg" data-ll-status="loaded" />
21:9 aspect ratios are the common ratio used for ultrawide or panoramic monitors, and it is very close in ratio to the anamorphic wide screen ratio (2.39:1) used in cinema.
The exact aspect ratio of these monitors actually tends to be 64:27 (2.37:1), but they are advertised as 21:9 (2.33:1), likely for consistency with the well-known 16:9 ratio.
The panoramic ultrawide screen monitor allows for a seamless wide field of vision, great for multitasking and gaming.
Common ultrawide monitor resolutions are 2560×1080 and 3440×1440.
4:3
https://insaneimpact.com/wp-content/uploads/2022/07/2-4-3-aspect-ratio-1-300x180.jpg 300w, https://insaneimpact.com/wp-content/uploads/2022/07/2-4-3-aspect-ratio-1-768x461.jpg 768w" alt="16:9 classic aspect ratio" width="1000" height="600" class="attachment-large size-large wp-image-13105 entered lazyloaded" style="box-sizing: border-box; border: none; height: auto; max-width: 100%; vertical-align: middle; border-radius: 0px; box-shadow: none; display: inline-block; width: 600px;" decoding="async" data-lazy-srcset="https://insaneimpact.com/wp-content/uploads/2022/07/2-4-3-aspect-ratio-1.jpg 1000w, https://insaneimpact.com/wp-content/uploads/2022/07/2-4-3-aspect-ratio-1-300x180.jpg 300w, https://insaneimpact.com/wp-content/uploads/2022/07/2-4-3-aspect-ratio-1-768x461.jpg 768w" data-lazy-sizes="(max-width: 1000px) 100vw, 1000px" data-lazy-src="https://insaneimpact.com/wp-content/uploads/2022/07/2-4-3-aspect-ratio-1.jpg" data-ll-status="loaded" />
4:3, or 1.33:1 was the standard for video up until the late 90s/early 2000s before being replaced by 16:9. The most common 4:3 resolution on older TV’s was 640×480.
If you watch an old film on a new display screen, it will likely look like this:
https://insaneimpact.com/wp-content/uploads/2022/07/pillarboxing-example-1-300x142.jpg 300w, https://insaneimpact.com/wp-content/uploads/2022/07/pillarboxing-example-1-768x364.jpg 768w" alt="aspect ratios on tv screens" width="1000" height="474" class="attachment-large size-large wp-image-13106 entered lazyloaded" style="box-sizing: border-box; border: none; height: auto; max-width: 100%; vertical-align: middle; border-radius: 0px; box-shadow: none; display: inline-block; width: 600px;" decoding="async" data-lazy-srcset="https://insaneimpact.com/wp-content/uploads/2022/07/pillarboxing-example-1.jpg 1000w, https://insaneimpact.com/wp-content/uploads/2022/07/pillarboxing-example-1-300x142.jpg 300w, https://insaneimpact.com/wp-content/uploads/2022/07/pillarboxing-example-1-768x364.jpg 768w" data-lazy-sizes="(max-width: 1000px) 100vw, 1000px" data-lazy-src="https://insaneimpact.com/wp-content/uploads/2022/07/pillarboxing-example-1.jpg" data-ll-status="loaded" />
The display of 4:3 footage onto a 16:9 display screen results in black vertical boxes on either side. This effect is also referred to as pillarboxing or reverse letterboxing.
While the 4:3 aspect ratio has become virtually obsolete with video, it is still a common aspect ratio today for cameras and photography.
3:2
3:2
https://insaneimpact.com/wp-content/uploads/2022/07/3-2-aspect-ratio-example-1-300x180.jpg 300w, https://insaneimpact.com/wp-content/uploads/2022/07/3-2-aspect-ratio-example-1-768x461.jpg 768w" alt="aspect ratios on images printed" width="1000" height="600" class="attachment-large size-large wp-image-13107 entered lazyloaded" style="box-sizing: border-box; border: none; height: auto; max-width: 100%; vertical-align: middle; border-radius: 0px; box-shadow: none; display: inline-block; width: 600px;" decoding="async" data-lazy-srcset="https://insaneimpact.com/wp-content/uploads/2022/07/3-2-aspect-ratio-example-1.jpg 1000w, https://insaneimpact.com/wp-content/uploads/2022/07/3-2-aspect-ratio-example-1-300x180.jpg 300w, https://insaneimpact.com/wp-content/uploads/2022/07/3-2-aspect-ratio-example-1-768x461.jpg 768w" data-lazy-sizes="(max-width: 1000px) 100vw, 1000px" data-lazy-src="https://insaneimpact.com/wp-content/uploads/2022/07/3-2-aspect-ratio-example-1.jpg" data-ll-status="loaded" />
Odds are that most of your photos are in the 3:2 ratio. Popularized by 35mm film, it is the most common aspect ratio in photography today.
1:1
https://insaneimpact.com/wp-content/uploads/2022/07/square-aspect-ratio-social-media-example-1-300x180.jpg 300w, https://insaneimpact.com/wp-content/uploads/2022/07/square-aspect-ratio-social-media-example-1-768x461.jpg 768w" alt="aspect ratio on mobile phones" width="1000" height="600" class="attachment-large size-large wp-image-13115 entered lazyloaded" style="box-sizing: border-box; border: none; height: auto; max-width: 100%; vertical-align: middle; border-radius: 0px; box-shadow: none; display: inline-block; width: 600px;" decoding="async" data-lazy-srcset="https://insaneimpact.com/wp-content/uploads/2022/07/square-aspect-ratio-social-media-example-1.jpg 1000w, https://insaneimpact.com/wp-content/uploads/2022/07/square-aspect-ratio-social-media-example-1-300x180.jpg 300w, https://insaneimpact.com/wp-content/uploads/2022/07/square-aspect-ratio-social-media-example-1-768x461.jpg 768w" data-lazy-sizes="(max-width: 1000px) 100vw, 1000px" data-lazy-src="https://insaneimpact.com/wp-content/uploads/2022/07/square-aspect-ratio-social-media-example-1.jpg" data-ll-status="loaded" />
While video and image aspect ratios vary greatly across social media platforms, the 1:1 square aspect ratio is a very common one. It is also the most common ratio for icon and profile images.
https://insaneimpact.com/wp-content/uploads/2022/07/social-media-aspect-ratios-example-1-300x227.jpg 300w" alt="aspect ratio on social media pages" width="419" height="317" class="attachment-large size-large wp-image-13119 entered lazyloaded" style="box-sizing: border-box; border: none; height: auto; max-width: 100%; vertical-align: middle; border-radius: 0px; box-shadow: none; display: inline-block;" decoding="async" data-lazy-srcset="https://insaneimpact.com/wp-content/uploads/2022/07/social-media-aspect-ratios-example-1.jpg 419w, https://insaneimpact.com/wp-content/uploads/2022/07/social-media-aspect-ratios-example-1-300x227.jpg 300w" data-lazy-sizes="(max-width: 419px) 100vw, 419px" data-lazy-src="https://insaneimpact.com/wp-content/uploads/2022/07/social-media-aspect-ratios-example-1.jpg" data-ll-status="loaded" />
These ratios also tend to change. To stay up-to-date on the latest social media aspect ratios, check out these useful links from Sprout Social:
How to calculate aspect ratios yourself
Aspect ratios can be written as W:H or N:1. Here’s how to calculate aspect ratios both ways.
CALCULATING ASPECT RATIOS AS W:H
To calculate an aspect ratio as W:H, divide your width and your height by their greatest common factor (GCF), and write it as W:H, where W is units of width divided by the GCF and H is units of height divided by the GCF.
A greatest common factor is the highest whole number that will evenly divide by a set of numbers.
Formula
W:H = Width divided by the GCF of width and height : Height divided by the GCF of width and height.
Example
640×480
The GCF of 640 and 480 is 160
640 divided by 160 = 4
480 divided by 160 = 3
Aspect ratio = 4:3
In this example, the highest number that will divide evenly by both 640 and 480 is 160. So both numbers are divided by this GCF and written as W:H.
While an aspect ratio is not a fraction per se, calculating an aspect ratio as W:H uses the same math as simplifying a fraction.
If you were to simplify the fraction 550/75, you would get 22/3 (by dividing both 500 and 50 by the GCF of 25).
Similarly, if you have an LED video wall that is 550 pixels wide by 75 pixels high (550x75p), then its aspect ratio is 22:3.
An aspect ratio written in the format W:H is a simplified set of numbers where W is the units of width and H is the units of height.
CALCULATING ASPECT RATIOS AS N:1
Calculating aspect ratios as N:1 is a bit simpler. Just divide the width by the height and put “:1” after it.
Formula
N:1 = Width divided by height : 1
Example
1920×1080
1920 divided by 1080 = 1.78
Aspect ratio = 1.78:1
Aspect ratios and LED video walls
Many LED video walls are built into the common 16:9 aspect ratio. However, part of the allure of video walls is their ability to be built into custom aspect ratios.
https://insaneimpact.com/wp-content/uploads/2022/07/Custom-Aspect-Ratio-Video-Walls-1-250x300.jpg 250w, https://insaneimpact.com/wp-content/uploads/2022/07/Custom-Aspect-Ratio-Video-Walls-1-768x922.jpg 768w, https://insaneimpact.com/wp-content/uploads/2022/07/Custom-Aspect-Ratio-Video-Walls-1.jpg 1000w" alt="custom aspect ratio video walls" width="853" height="1024" class="attachment-large size-large wp-image-13131 entered lazyloaded" style="box-sizing: border-box; border: none; height: auto; max-width: 100%; vertical-align: middle; border-radius: 0px; box-shadow: none; display: inline-block;" decoding="async" data-lazy-srcset="https://insaneimpact.com/wp-content/uploads/2022/07/Custom-Aspect-Ratio-Video-Walls-1-853x1024.jpg 853w, https://insaneimpact.com/wp-content/uploads/2022/07/Custom-Aspect-Ratio-Video-Walls-1-250x300.jpg 250w, https://insaneimpact.com/wp-content/uploads/2022/07/Custom-Aspect-Ratio-Video-Walls-1-768x922.jpg 768w, https://insaneimpact.com/wp-content/uploads/2022/07/Custom-Aspect-Ratio-Video-Walls-1.jpg 1000w" data-lazy-sizes="(max-width: 853px) 100vw, 853px" data-lazy-src="https://insaneimpact.com/wp-content/uploads/2022/07/Custom-Aspect-Ratio-Video-Walls-1-853x1024.jpg" data-ll-status="loaded" />
Video walls that are wider than 16:9 may be referred to as panoramic or wide. Video walls with a height greater than their width are called portrait. Ultra-wide ratio video walls are often called ribbon boards, and ultra-tall ratio video walls are often called pillars.
Custom aspect ratio displays allow for unique viewing experiences outside of the 16:9 box.
Conclusion
Aspect ratios are the proportion of an object’s width to height, written as W:H or N:1. They are important to understand when properly sizing images, videos, and video walls. Use our handy calculator to calculate any aspect ratio with a breeze, or calculate them yourself with some simple math.
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Generac is the most popular brand of whole home generators. Available from Generac is Wifi, ethernet and cellular communications to let you know the status of your generator. Unfortunately, this is a cloud service that is priced annualy. Allonis has developed a myServer local (to your home) way for you to see the system status that has no ongoing costs.
What it does:
Monitors the "23 wire" for connection to ground (this tells the transfer switch to switch over to generator power and off of utility power)
Monitors the "194 wire" for existence of 12 volts (this power from the generator powers the transfer switches switching logic - if this is unavailable - the transfer switch won't fail over to generator).
Monitors the "N1 utility sense wire" (this tells the generator to start when utility power is in failure).
Optionally monitors the Utility power (to measure your utility power usage)
Optionally monitors the Generator power (to measure how much current your generator is providing during a power outage)
Optionally monitors your propane level (to help ensure you don't run out of propane)
Control panel wiring for home standby generators
Control wires allow for proper communication and functionality between the generator, transfer switch, and utility power source. In a Generac Home Standby Generator installation, several key control wires must be properly connected and functioning for optimal performance.
Environment
This article applies to Guardian series home standby generators.
| ID | Description | ID | Description | ID | Description | ID | Description |
| A | DC Terminal Block | C2 | Wire tie for control wire | E2 | Power lug E2 | H | Neutral stud |
| B | AC Terminal Block | D | Neutral lug | F | Ground stud | J | Neutral bar |
| C1 | Wire tie for sense wires | E1 | Power lug E1 | G | Ground lug | — | — |
N1/N2 – Utility Voltage Sensing Wires (240V)
The N1 and N2 wires are responsible for sensing utility power dropout and pickup. These wires originate in the switch and must have 120VAC each (240VAC between them). The N1/N2 fuses in the Automatic Transfer Switch (ATS) protect these terminals. If the generator starts even when utility power is present, check this connection and fuses.
T1 – Battery Charge Circuit (120V)
The T1 wire powers the generator's battery charger and originates in the switch. It provides the 120VAC required to operate the internal battery charger. The T1 fuse in the ATS protects this circuit. If the generator batteries keep dying, check this connection and fuse.
00 Neutral (White)
A designated wire for neutral per NEC 2023 code. This wire is included on all new generators manufactured in and after 2023. If this connection is present on the generator, then this wire must be connected for a battery charger to work.
23/194 – Transfer Circuit
Wire 194 provides 12VDC to the ISACM board at the transfer switch. This voltage is used for powering the control board as well as the transfer relay. Wire 23 provides a ground for the transfer relay and is internally controlled by the generator's controller. If the transfer switch does not transfer, verify wire 194 has 12VDC and wire 23 has been taken to ground.
0/DC Common
The DC Common is the common ground wire and is only used with smart switches. It provides constant ground to power the Smart A/C Module (SACM). If the SACM is not operating, check this connection.
209/210 Wires – Common Alarm (Optional)
This is a customer-supplied connection that allows the generator to wire into an existing security system. These are normally open, dry contacts that close if the generator experiences a shutdown alarm. When they close, a message is sent to the home’s security system to alert it of a generator fault. These are the wires hanging loose under the control panel.
Regular maintenance, including checking these connections, is critical to ensure that the generator operates reliably when needed. If any of these connections are not functioning correctly, contact an authorized independent service dealer.
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Complete Home Automation Control
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