Remote monitor and control implementation via an optical digital link

Zoran Ljusic Sr.; Krzysztof Caputa; Erning Zhao Sr.

doi:10.1117/12.2562967

13 December 2020 Remote monitor and control implementation via an optical digital link

Zoran Ljusic Sr., Krzysztof Caputa, Erning Zhao Sr.

Proceedings Volume 11454, X-Ray, Optical, and Infrared Detectors for Astronomy IX; 114542E (2020) https://doi.org/10.1117/12.2562967
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

The Single Pixel Feed Receiver (SPFRx) is a Sub-Element of the Square Kilometer Array (SKA) Dish Element. Its main function is receiving RF signals captured by the SKA-mid Dish (DSH) and pre-amplified by the Single Pixel Feed (SPF) Sub-Element components. The main tasks of the SPFRx hardware, firmware, and software is to perform analog to digital conversion on the incoming RF signals and to send the digital RF samples to the SKA Central Signal Processing (CSP) Element as 100G Ethernet packets. For analog to digital conversion, of SKA-mid Bands 1-3 a 12-bit Analog to Digital Converter (ADC) is used. The ADC and its supporting electronics reside on an electronic board placed within a metal box on the telescope’s indexer. A number of measures are taken to minimize Radio Frequency Interference (RFI) created by the switching elements on the board. One of the major measures is using an optical link for performing monitor and control function of the internal electronics by the Local Monitor Control (LMC) module residing within the telescope’s base.

Citation Download Citation

Zoran Ljusic Sr., Krzysztof Caputa, and Erning Zhao Sr. "Remote monitor and control implementation via an optical digital link", Proc. SPIE 11454, X-Ray, Optical, and Infrared Detectors for Astronomy IX, 114542E (13 December 2020); https://doi.org/10.1117/12.2562967

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