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Showing posts from March, 2017

Buying Wireless Router made Simple - What Buying Guides will not tell you.

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The first thing to check before buying a router is the download speed claimed by your service provider. Note that this speed should be available to your home and not to the building premises. Next thing to look at is the end point cable carrying internet to your home that has to be connected to the router for conversion from electrical/Optical signal to Wireless. It can be a Phone Line RJ-11 with ADSL/VDSL standards on top of it or can be RJ-45 Electrical or Optical WAN cable that gets directly terminated to your Modem first. In the latter scenario, the output from the Modem gets connected to the Input of the Wireless Router by a RJ-45 LAN Cable. 

Once the download speed claimed and the cable or standard that carries internet is known, it's time to choose a wireless Router with input sufficing and exceeding the speeds claimed by the Internet service provider. There are two parts attached to it. 

1. Type of Input to the wireless router. a. ADSL/VDSL Routers - The phone Line RJ-11 In…

Consumer Electronics Connectivity made simple - What Buying Guides will not tell you.

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Here we discuss about what ports to look at before buying any Product. But why is it important? All in all, the end pocket that has to drive this is ours, the consumer. This is also driven by our need to process things faster. Faster data transfer, faster system boot time, faster internet, faster charging and on and on..

The consumer electronics has swiftly transformed from what is known as a parallel architecture to a serial bus owing to the many benefits associated
with it. All the latest standards like USB, SATA, HDMI, Display Port , Thunder Bolt carry data on a serial bus from the port of product to the IC within. The serial bus consist of two copper lines called traces running in parallel to each other on Printed Circuit Board like a train rail connecting two stations. In this case, two pins from the connector of the product to two pins of the IC mounted on the PCB. Data travels between these points like a train traveling between two stations. To cater to our need to see quick tr…

Buying Projector made Simple

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Here are the things to decide before buying a Projector:

Space availability for projection. This one single need would determine Screen Size that in turn decides specifications like F-Number, Focal Length of the Lens and Throw Ratio. Once the minimum and maximum Screen Size is fixed, the next thing to decide is the selection of the kind of technology considered suitable for your application viz LCD, DLP and SXRD type projection. We discuss the construction of each at the end of this article and the pros and cons of each type. Let's discuss the key considerations here.



1. Focal Length, Zoom Factor and Throw Ratio of the Lens. These specs define how far and near from screen the Projector can be placed and the possible screen sizes. The Throw Ratio that is the Ratio of the Screen Size to the Throw, the distance of the Screen from the Projector has to be looked at, depending on the availability of size of the room for Projection. For instance, a classroom with space constraints would n…

How to buy a UPS

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Visit http://speclabz.com for the One Drop Down All Consumer Electronics Tool and the UPS selection tool for Home IT and Home Appliances.




1. Appliances on UPS. The first thing to decide before selecting a UPS are the appliances and devices that would be on UPS under Power off conditions. The summation of the number of devices and the maximum Power consumption of each device would give the minimum amount of Power Output that the UPS needs to supply under Power off conditions, along with the number of Sockets that can suffice the Power requirement for multiple connected devices. It's important to understand the concept of True Power in Watts and Apparent Power in Volt Amperes(VA) and the ratio of the two called Power Factor. We'll not get into how and why True Power is always less than the Apparent Power and the difference between impedence and resistance. But the industry de facto is True Power delivered to the appliance is 60% of the Apparent Power that the UPS can…

Buying Digital Compact Camera made Simple

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1.Lens Aperture & F Number.
One of the important considerations in camera selection is the F-Number range supported by the Lens. This number determines how well the camera is able to accumulate Light for a clear bright Picture and how close from the object the camera is able to resolve focus. The smaller the F-Number, the higher the aperture and higher the light entering into the camera for a brighter capture. A smaller F-Number would do really good for Portraits where the clear focus is on the subject. This would mean a good focus on the subject and a blurry background image. The reverse, that is a smaller aperture would leave less light in and would capture good background image like that needed for Landscapes. Smaller F-Number Lens would usually come with a higher price tag. However, the best choice is to select a wide range of F-Number supported Lens.








2. Camera Shutter Speed.
This determines how well the Camera is able to resolve moving objects like a racing car. The higher th…

Buying Television made Simple - What Buying Guides will not tell you.

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1. Television Resolution and Clarity : Pixels, Pixels and more Pixels. One of the key and the most important term for everything related to Picture quality is Pixels. But why should you care? Clarity, Contrast and Color all revolves around how each pixel is being displayed on the television display. The information that is being transmitted to the television need to be realized and presented to you without any noise, whatsoever. The resolution, that is the proximity of pixels from each other attempts to partly address this. However the senses needs more illuminated , more darker, grayer and colourful pixels where applicable. All the manufacturers address or attempt to address this aspect with different technology implementation and terminology.


2. Television Contrast : Brightness and darkness display capability or Dynamic range of what the Television can display is one of the contrast aspects. Let's discuss about the human eye that has the best possible dynamic range, just accura…

How to Buy a Desktop PC

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http://speclabz.com has Desktop PC selection Tools based on multiple attributes and the One Drop Down All Consumer Electronics Market Tool for Desktop PC.




1. Performance of the Desktop Processor : The Performance of the Desktop depends on the processing power of the CPU. Besides others, the Processor Core Frequency, number of cores, number of threads, the cache size, the Input/Output frequency and the RAM size defines the Processing Power. The nanometer size has been shrinking and the processor generations usually gets upgraded with the need to accommodate more functionality in a single IC with the same or a smaller package size. The fully loaded running applications contributes to a good amount of heat and noise generation and an optimal design takes care of dissipating the heat and maintaining the decibel noise levels to satisfactory levels.

2. Desktop Connectivity : It's all miniaturized and serial now a days. What does this mean? The ports that connect the Desktop…

Buying Tablet made Simple - What Buying Guides will not Tell You.

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Visit http://speclabz.com for Tablet selection Tool based on attributes and the One Drop Down All Consumer Electronics Market Tool.




The specifications criteria for Tablet is similar to the Laptop as applicable with few variations. We'll discuss them as below. 


1. Tablet Processor The critical factor for Performance is the Processor Core Frequency, number of cores and threads. Check on the RAM storage capacity. Tablets with RAM upto 4GB are available. Upgradability could not be an option as the RAMs are usually soldered on the Tablet Mother Board unlike laptop which has slots to plug in the RAMs. The cache is limited in size and L3 Cache may not be there unlike Laptops. Speaking only about the Tablets , A multiple core Processor with higher frequency, with higher cache and RAM size would always have more fire power relatively.



2. Tablet Battery Tablets come with Lithium Ion or Lithium Polymer batteries. Li-Polymer is thinner and flexible and Li-Ion is rigid and thicker. Thin Tablets u…

Buying Laptop made Simple - The Human body analogy

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1. Performance of the Laptop Processor : The Brain.
The Performance of the laptop depends on the processing power of the CPU. Besides others, the Processor Core Frequency, number of cores, number of threads, the cache size, the Input/Output frequency and the RAM size defines the Processing Power. The nanometer size has been shrinking and the processor generations usually gets upgraded with the need to accommodate more functionality in a single IC with the same or a smaller package size. The fully loaded running applications contributes to a good amount of heat and noise generation and an optimal design takes care of dissipating the heat and maintaining the decibel noise levels to satisfactory levels. In analogy, Processor is the Brain, always ready to achieve it's limits with optimal design. 2. Laptop Battery : The Heart. Faster Processor and Input/Output Ports are good and all this is achievable because of the Power Supply running in your laptop. There are multiple voltages that th…