N4LNurses 4 London (London, UK)
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An N4L application note (3) succinctly deals with accuracy: "While the digital design of any digital instrument is clearly important, the accuracy of all these instruments is dictated by the analog design and calibration." In particular, the capacitance of voltage inputs and the inductance of current inputs limit achievable performance.
According to the PPA3500 datasheet, N4L selected the DFT for signal decomposition because it is not restricted to the [2.sup.n] sample window size as is the FFT.
Current shunt design is the subject of another N4L application note.
To put the importance of a shunt's frequency response into perspective, the N4L PPA3500 has a built-in 30-A shunt, and the current accuracy is specified as 0.04% of reading + 0.1% of range + 0.005% x F(kHz) of reading + 900 [micro]A.
As per the contract, Telecom s ICT services unit, Gen-i, will be responsible to help N4L in developing a solution encompassing managed network services, internet access, security and content filtering.
According to CEO Tim Miles, with a nationwide network of retail stores and Gen-i branch offices, local existence of the firm and amount of ICT services experience would offer a high level of service to the N4L community.
Miles said, In partnering with N4L, Gen-i will leverage extensive experience in delivering high-quality products and services over fibre to help build what we believe will be the largest managed network in New Zealand.
Additionally, N4L will even have to develop a portal which will provide a safe, collaborative environment where discovery of trusted educational content as well as services are done along with the sharing of knowledge.
John Hanna, CEO, N4L said, Interactive, inquiry-based learning, supported by technology will help to make a difference to all students.