RF Wirelesss Optics

RF, Microwave, Wireless, Optics and High Frequency Applications. Low Power Embedded Devices and Networking. Part of delabs Technologies

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Monday, February 17, 2020

Modbus Communication Protocol Suite

Group of individuals and firms supporting and helping the implementation of Modbus communication protocol suite and the evolution to address architectures for distributed automation systems.

Modbus Communication Protocol Suite

Some Activities of the Modbus Organization are ...to Encourage, support and evolve ...
  • Participation in standards activities worldwide.
  • Leading the evolution of the Modbus protocol and its variants.
  • Modbus across a broad spectrum of physical layers and transmission media.
  • Conformance testing program to insure greater interoperability of Modbus devices.


Some Facts -

Modbus Protocol is a messaging structure developed by Modicon (Schneider Electric) in 1979. It is used to establish master-slave/client-server communication between intelligent devices. It is a de facto standard, truly open and the most widely used network protocol in the industrial manufacturing environment.

Thursday, February 13, 2020

Anritsu Corporation - Test and Measurement

Information network test & measurement for mobile & internet, RF&Microwave solutions, fibre-optic telecommunications and industrial solutions.

Anritsu Corporation - Test and Measurement

Anritsu Corporation is a Japanese company specializing in the test and measurement equipment market. Products include microwave, radio frequency (RF), and optical signal generators, spectrum analyzers, and network analyzers.

VectorStar  MS4640B Series Anritsu

The VectorStar family is Anritsu's Premium VNA line, providing the highest overall performance on a modern platform. The MS4640B VectorStar VNA offers the broadest coverage in a single instrument, 70 kHz to 70 GHz. The additional two decades at the low end are even more impressive than the guaranteed 70 GHz coverage on the high end.

VectorStar Family of RF, µW, mmW VNAs MS4640B Series

The Anritsu MS4640B Vector Network Analyzer offers a new level of performance for device modeling engineers struggling to accurately and reliably characterize their devices, for R&D engineers pushing the last fraction of a dB out of their state-of-the-art designs, and for the manufacturing engineer trying to maximize throughput without sacrificing accuracy

1931- Anritsu Electric Corporation was established by the merger of Kyoritsu Electric and Annaka Electric

Thursday, February 06, 2020

Nordic Semiconductor - Wireless Microchip

A semiconductor company specializing in design solutions at the microchip level in the areas of wireless communication and multimedia. Nordic Semiconductor ASA is a world leader in high-speed data converters and short-range radio communication.

Nordic Semiconductor - Wireless Microchip

ANT is a proven, ultra low power, flexible and easy-to-use network protocol for 2.4GHz ISM band communication. ANT provides multivendor interoperability via the ANT+ managed network and the member companies of the open ANT+ Alliance.

Useful for ultra low power wireless sensor network applications including wireless sensors and hubs.

ANT - Single chip ICs/solutions

ANT is perfectly suited for any kind of low data rate sensor network topologies in personal area networks (PANs) and practical wireless sensor networks

Nordic nRF51 SoC Eval Kit

"Nordic Semiconductor has released a matchbox-sized, low cost, battery-powered eval kit for its latest nRF51 Series of SoCs that allows engineers to perform real-world environmental testing of ANT+, Bluetooth low energy (including Bluetooth Smart), and proprietary 2.4GHz ultra low power wireless sensors and accessories 'in the field'"

Nordic Semiconductor ASA
Otto Nielsens veg 12 Trondheim, 7052 Norway

Thursday, January 16, 2020

Personal Telco Project - Oregon

The Personal Telco Project is a 501(c)(3) non-profit organization located in Portland, Oregon dedicated to the idea that users have a central role in how their communications networks are operated.

"We are a volunteer group of Portlanders who believe that 802.11 (wireless networking, or Wi-Fi) technology is both cool and empowering. "

Personal Telco Project - Oregon

"We started, in 2000, by turning our own houses and apartments into wireless hotspots (also referred to as "nodes"), and then set about building these nodes in public locations such as parks and coffee shops. Currently we have over 100 active nodes, and we eventually would like to cover the entire city of Portland, Oregon with even more."

A PTP Node Trailer loaded with the NuCab - Personal Telco Project - Oregon

A "PTP Node Trailer" loaded with the NuCab.

Wireless Connectivity - Texas Instruments

TI Wireless Connectivity devices are helping you connect to the Internet of things.

Wireless Connectivity - Texas Instruments

A gateway is a bridge that connects wireless devices to the Internet. This Linux-based Home Automation Gateway enables remote monitoring and control of ZigBee powered nodes and devices inside the home.

 Residential Smart Home Gateway Reference System for IoT Applications Hardware Block Diagram

 Residential Smart Home Gateway Reference System - TI

ZigBee Home Automation Gateway

Simple API for home automation, incorporating TCP/IP to ZigBee bridge and enabling faster development of applications and easier integration of low power connectivity solutions.

Yokogawa - Test and Measurement

The product range includes digital oscilloscopes, energy/power analyzers, data acquisition systems and Optical Instruments like Optical Spectrum Analyzers and Optical Reflectometer.

Yokogawa - Test and Measurement

Yokogawa also has sources and signal generators to configure a high speed test and measurement system. Portable and Handheld Instruments for field use like DMM, Insulation tester, Lux meter and more.

DLM2000 Series Digital Oscilloscopes Yokogawa

The flexible MSO input lets you measure both, including mixed signal triggers and decoding of parallel or serial bit patterns.

DLM2000 Series Digital Oscilloscopes Yokogawa

Using logic input, up to 11 input signals can be observed simultaneously as 3 ch of analog and 8-bit logic. It is not only possible to use logic input for observation of data and control signals, or as a trigger source, but also for logic

Monday, November 11, 2019

Cloud Computing the Cerebral Six Pack

Grid computing among servers is fine. But the concept of networking unused computers and using that for crunching large numbers is not practical. This is mainly because it is not green (power consumption). Such ideas are not economical for the purpose served. Not Sustainable.
Cloud Computing the Cerebral Six Pack

What we need is like a Class AB Audio Amplifier. Deliver Power on demand, or scale up/down (hardware switching) on demand, efficiently. This is only possible in client-server systems. Cloud Computing is the way. The clients are Low Power Multi-Media Terminals. The Modules in the Servers can turn on, as demand increases, as more people login or compute more.

Sunday, November 10, 2019

e-Gram - Secure and Green Communications

When we send a snail mail or receive them, there is not much of spam involved. This is because of the cost of the postage stamp and cover. Even then some unwanted snail mail may come in rarely.

e-Gram - Secure and Green Communications

 The cost of sending an e-mail should fall on the sender, not the receiver or the mail transport system. A way - more like 100 free sending per day, above that nominal charges. This may not work well as most of this spam is sent unconventionally. If routers and servers get smart, they can block spam, then it may be like charging a Toll on the Data Highway. That may choke the net for normal users.

Extra Extra !