System BLUE / capability to handle external RF fields
Each Amp channel also including two digital gain adjustable Amps, a digital LP-Filter and an anti aliasing filter just before the A/D-converter

Pre-Amp for the H-Field is tested for a long period and with different antennas and operating as intended.

E-Field is a slightly modifyed pre-amp as used in System RED

All analog circuitry is straightforward, but we need to test possible disturbance from the digital circuits surrounding the Amps - IT takes time because everything must sit properly on the final PCBs before ordering hundreds Smile
We need an adaptation from the antenna to the amplifier via a cable - the cable must be properly terminated and therefore the easiest way is with a pre-amp, since the antenna impedance varies greatly.
Stations: 584, 585, 2017

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RE: System BLUE / capability to handle external RF fields - by RichoAnd - 2015-07-04, 22:11

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