EFY Times  
Thursday, February 11, 2016

 
GO
 
 
Importance Of Calibration For T&M Instruments
 
Home >> Electronics >> Features
 
Importance Of Calibration For T&M Instruments  
 
The impact of even a small error in measurement can be tremendous in terms of loss in revenue. Hence, even the smallest of errors in delivery (data accuracy) is unacceptable due to the vast sums of money involved, first, when manufacturers buy instruments, and later when prototypes go into production. Thus, it has become vital to have the equipment calibrated on time.    
Rate this news:  (0 Votes)
Saturday, May 19, 2012 Calibration is the process of configuring an instrument to provide a result for a sample within an acceptable range. To ensure that electronics test equipment performs as per specifications, it is necessary that it receives its periodic calibration. Over a period of time, every device experiences physical stress or variations that cause a decline in its performance levels. Hence, calibration is the key to accurate data. Calibration can be of two types—the first is soft calibration, which is done on the basis of internal signals and software algorithm routines. While hard calibration is done once in a year or two, using industry standard signal generators.

While calibrating, the procedure may vary from product to product. However, this process generally involves using the instrument to test samples of one or more known values called calibrators.

With technological advancements, several instruments like oscilloscopes today provide state of the art design and debug solutions and come with an inbuilt calibrator. Thus, oscilloscopes offer extensive triggers to identify elusive anomalies. However, once they are connected to active probes, calibration is required so as to detect and capture the signal accurately. Agilent offers the widest range of application and customer support locally. Local customer support centre holds an ISO 9002 certification and is an NABL accredited calibration centre. “We offer a very unique web based customer interface to all our serviced install base and a unique offering of onsite calibration called VOSCAL (volume onsite calibration). We also provide calibration and adjustment software for those customers who have the hardware capabilities in-house. These are the same OEM calibration software used in Agilent service centres,” informs Sadaf Arif Siddiqui, technical marketing specialist, Agilent Technologies Pvt Ltd.

calibration, electronics, measurement, electronics instrument




How frequently should calibration be done?

It is difficult to specify the time intervals between calibration. A daily testing control solution of known values can provide a quantitative indication of the instrument’s performance, which can be recorded. If the control data indicates that the instrument’s performance is stable, or is varying randomly but well within the acceptable range of values, then there is no need to recalibrate the instrument. However, if the historical data indicates a trend beyond the limit of the acceptable range, then recalibration is warranted. Informs Nasser Salim Jariwala, head, business development and regional manager, west India, Rhode & Schwarz, “There is no special maintenance required other than the usual procedure followed for test and measurement (T&M) products. We at Rohde & Schwarz recommend calibration of a unit after one year of its operation. Also, all prominent manufacturers have their own calibration facilities in their labs.”

What players offer

Normally, specific adjusters are required to enable the instrument to be calibrated. Additionally, the required test setup and suitable test equipment to perform the calibration procedure is required. Shares Kumaraswamy ML, deputy general manager, TMI and Communications products division, Yokogawa India Ltd, “Scopes usually require periodic maintenance for healthy operations related to its published specifications. Hence, not only do companies offer calibration services for their devices but they also have dedicated service and repair centres to take care of periodic maintenance and repair.”

Says Praveen Kumar Gupta, director, Avante Global Services Pvt Ltd, “An oscilloscope calibrator is an independent device that offers very high accuracy and can be calibrated. These are being offered by a select few calibration equipment manufacturers only. Most manufacturers recognise the need to maintain properly calibrated devices for high accuracy measurements. To help meet calibration needs, manufacturers provide calibration support and services that include manual calibration procedures, services to calibrate products and automated calibration software.”

Adds Nandini Subramanya, marketing communications manager, National Instruments (NI) India, “Every PXI-5922 is factory calibrated to verify that it meets NIST-traceable standards. It has an onboard calibration circuit that corrects it for environmental effects on linearity, gain, offset and input bias current. Also, users can perform self calibration to ensure that the board is within specifications.” With ISO 17025 accredited calibration, NI offers traceable and complaint calibration services to its clients. With traceable calibration, users can track how instruments are performing as well as minimise the time and costs associated with unscheduled downtime and quality issues.

The RTO 1044 series of oscilloscopes offered by Rhode and Schwarz have self-test and self-alignment features. Self-alignment involves performing horizontal and vertical alignment, ideally, 0.5 hours after the power is on. If self-alignment fails, the ‘UNCAL’ flag appears on the screen indicating that calibration has not been processed. Adds Nasser Salim Jariwala, “Both self-testing and self-alignment can be initiated by the customer at any time during the operation of the unit. We are equipped to repair and calibrate these scopes in the event of failure. We have trained service experts and have a NABL-certified lab in Bengaluru.”

While manufacturers do offer calibration facilities, it is the users who have to ensure that the equipment is operating as per specifications. This is achieved by rigorously maintaining a process whereby all the equipment in use is calibrated. This will ensure that all the measurements are accurately made and with sufficient records, any test equipment problem can be traced and rectified.

-- Richa Chakravarty




Print Email Post Comment  (1)
(Total Views: 3338)
 
Share

 
 

1 Comments

Sagar   1334 days ago

This is a most useful contribution to the debate
Reply  
 
Electronics News
   
Microsoft Selects TechBlocks As A Key Go-To-Market Partner For Their Internet Of Things (IoT) Initiatives
Trustonic Simplifies Security For Mobile And IoT Apps Developers
Kalray To Launch High Speed I/O Processors
AVX Introduces A New Series Of Conductive Polymer Chip Capacitors For Demanding Automotive Applications
Cima NanoTech Debuts Large Interactive Touch Screens With European Customers At ISE 2016
 
 
 
     
     
     
     
     
     
Most popular
 

Daily

Automotive Industry Adopts GSMA Embedded SIM Specification To Accelerate Connected Car Market
SMK Electronics To Introduce ‘Evolution’ And ‘Voice Navigator’ Remote Controls At CableLabs Winter Conference
SimpliVity Extends Leadership In Enterprise-Grade Hyperconverged Solutions, Doubles Bookings And Grows Customer Base By 2.5x
Exinda Enters Agreement With ImmixGroup To Help Support Digital Government Strategy
CircleUp And RangeMe Team Up To Help Emerging Consumer Brands Connect With Investors And Retailers
Larson Electronics Releases 75 KVA Step-Down Power Distribution Cart For Heavy Duty Applications
Planar And Leyard Showcase Widest Range Of Commercial Displays At ISE 2016
SolarEdge Surpasses 10 Million Shipped Power Optimizers
IAR Systems Welcomes Visitors Of Embedded World 2016 To In-Booth Technical Seminar Sessions
Arecont Vision Names Joe Byron As New Regional Sales Manager For New England And Eastern Canada
 
   

Weekly

Indian Startups Shine At Asia Leaders’ Summit 2016
Team IIIT – B Wins Swiss Re 'My Personal Risk Advisor' Hackathon
EMC Announces New Innovation In Software Defined Storage With ECS2.2
Future Of Smart Manufacturing: 2016 Patent Analysis And Vendors' Deployment - Research And Markets
The Qprize – Make in India Contest by Qualcomm & DIPP
5 Brands That Created Buzz On Twitter In Past Week
5 Hidden Features In Truecaller
7 Things You Didn't Know You Could Do With iPhone
GE to Stop Making CFL Bulbs
Microsoft Acquires SwiftKey for Keyboard Apps
Payoye takes Mobile Payment to a New Level
Payoye Files Patent For QR Code Based Mobile Payment Technology
The 2015 Technovation Award Winners
Lenovo to Locally Manufacture Half of its Devices
Wipro enters into 7-year deal with RSA
Govt. plans $1.25 billion renewable energy fund
 
   

Overall

Features
8 Fun Facts About Facebook
The social networking giant has just turned 12....
5 Controversial Logo Changes Of Top Tech Startups
Here are some controversial logo changes over the years....
5 Hidden Features In Truecaller
The next generation digital phonebook app is full of hidden tricks and features....
5 Brands That Created Buzz On Twitter In Past Week
Weekly Twitter Advertiser Index lists the brands that generate most engagement with audience using the platform....
7 Things You Didn't Know You Could Do With iPhone
Here are 7 hidden feature of iPhone. ...
10 Interesting Interview Questions Asked In Top Tech Startups
Are you eying for the dream job in USA? Here are some interesting interview questions that you might get asked....
5 Biggest Smartphone Myths Busted
Did you know that overcharging of the device does not damage the battery?...
Top 5 Hidden Tricks For Your Android Smartphone
You can customize everything on your Android smartphone. ...
5 Key Qualities Of Facebook's Best Managers
The best managers help employees to progress and grow their skills. ...
7 Things Startup CEOs Are Better At Than Everyone Else
The great entrepreneurs are the best marketeer, salesman and leader. ...
6 Tips & Tricks That Every YouTube User Should Know
The popular video streaming site has tons of hidden features....
5 Hot Upcoming Smartphone Launches Of 2016
Here are top 5 smartphones that will be launched in coming months....
Top 5 Smartphones With Great Battery Life Under Rs 12000
Here are some budget smartphones that last for day long heavy usage!...
5 Things You Should Buy To Keep Your Gadgets Clean
Here are 5 things under Rs 800 that should be part of your gadget cleaning kit....
6 Hot Tech Careers For 2016
Tech jobs are amazing. They provide you flexibility and lots of opportunities. ...
 
  View All
Dialogue
 
Cisco Chairman keen on Manufacturing in India
EFY Times brings you some exclusive excerpts of an interview that was recently held with US-based, Cisco, executive chairman, John Chambers. ...
Chat-based bot developed by engineering graduates
Niki, developed by a group of four engineering graduates from Bangalore, now has 5,000 users, Niki - niki.ai/app - an Android (mobile) app is chat bas...
Meet Pranjal Saxena, India's 21 Year Old Electronics Wizard
Milan Ondhia of EFYTimes was in a forthright conversation with the 21 year old Pranjal Saxena from New Delhi; an aspirant at the WorldSkills meet, in ...
“We Offer Managed Document Solutions To CIO And IT Decision Makers”: Canon
Manufacturing within the country will surely reduce the cost of our devices, but manufacturing can begin only if there is the desired eco-system and w...
“One Day The End User Can Open Up A Used Battery, And Use What’s Inside As Barbecue Sauce”
Of course that is not something currently possible, but what B&B Batteries does have are some secret recipes for their very specialised battery design...
   
  View All
Videos
 
First Look: LG Optimus G
The phone sports a high-end display and comes powered by a powerful processor. ...
Create QR-Codes For Free
TEC-IT releases the freeware QR-Code Studio to provide a quick and convenient way of QR code creation for every application scenario....
DoT Secretary Shares Plans For Growth Of Telecom Sector
M.F. Farooqui has recently taken charge as secretary, Department of Telecom....
Hands-On: Sony Xperia Z
Xperia Z is Sony's first entrant model in the big-screen smartphone category. ...
Hands On: Videocon A30 Smartphone
Videocon, the consumer electronics company which is known for its refrigerators, washing machine and air-conditioner has unveiled its Android-based sm...
   
View All
   
 
IFA 2014
 
IFA 2014: LG Launches 34-Inches Curved Monitor
The company is yet to confirm price and availability of the device....
IFA 2014: Intel Launches First Core M Range Of Processors
This range of processors is tailor-made for 2-in-1 devices which include a tablet and a laptop....
MWC 2014: Tablet Lets People Feel Textures On Its Screen
Now feel what you see on your tablet, by way of ultrasonic waves....
MWC 2014: 4K Android Tablet Games To Kill Consoles, iPad
Tablet makers like Samsung want to beat the iPad by making 4K tabs. ...
MWC 2014: This Vodafone Backpack Helps Get Network In Disaster Situations
Two engineers of Vodafone New Zealand displayed the "mini" mobile network by Vodafone substructure in a backpack. ...
MWC 2014: Wilocity Chipset To Bring 'Lightening' Speed To Mobile Phones
Wilocity has developed a WiGig chipset for mobile phones that will bring lightning-fast wireless capability ...
MWC 2014: Samsung Introduces Octacore, Hexacore Chipsets
The Korean giant, Samsung unveiled two new octacore and hexacore chipsets at MWC 2014, in Barcelona. The company previously used Exynos 5 Octa 5410 ch...
   
View All
   
 
Events
 
19th Consumer Electronic Imaging Fair To Be Held On ...

View All
   
   
 
 

home archives contact us advertise with us
           
Magazines Portals Directories Events News Verticals Educational Institute  
Electronics for You
Open Source for You
Electronics Bazaar
electronicsforu.com
efytimes.com
opensourceforu.com
electronicsb2b.com
Electronics Annual Guide
EFY EXPO INDIA
EFY EXPO WEST
ELECTRONICS ROCKS
EFY Awards
OSIDAYS Expo
Electronics
Infotech
Linux & Open Source
Consumer Electronics
Science & Technology
BPO
EFY Techcenter

Educational Kits
Kitsnspares.com  
 
 
© Copyright 2016 EFY Enterprises Pvt. Ltd.
All rights reserved. Reproduction in whole or in part in any form or medium without written permission is prohibited.
Usage of the content from the web site is subject to Terms and Conditions