Table 4

Specifications of the XFFT-processing pipeline.

Signal processing/algorithm       polyphase filter bank (PFB)
Processing bandwidth 2.5 GHz (default)
Spectral channels 32768 (32k) @ 2.5 GHz
Channel separation 76.3 kHz @ 2.5 GHz
Spectral resolution (ENBW) 88.5 kHz @ 2.5 GHz
Internal FPGA signal processing 72-bit precision
On-board integration time max. 5 s
Spectral dump time 20 ms @ 32k channels
Spectroscopic Allan-variance  ~4000 s

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