Network Monitoring Experiment
Selected results from the JIVE SFXC software correlator
3 March 2025
Mode:
3.6 cm, 2048 Mbps, 16 BBC channels, 32 MHz filters, 2-bit sampling
Participating antennas:
Westerbork (Wb), Effelsberg (Ef), Noto (Nt), Onsala 20m (O6), Tianma 65m (T6),
Urumqi (Ur), Torun (Tr), Yebes 40m (Ys), Hartebeesthoek (Hh), Kunming (Km), Wettzel (Wz)
With 2 s integration times on
J0237+2848 (scans 2/4/6), J0319+4130 (scans 8/10), and J0530+1331 (scans 10/16/22).
Notes:
-- Ef: Amplitude difference between LCP and RCP (rxp is circular). Missed scan 6 (tracking problem).
-- Hh: sent data for both 26m (Hh) and 15m (Ht). They used same setup, same maser. In scan 4 Hh refers to Ht to check fringe (clock not centered for Ht).
-- T6: Amplitude problems between pols, BBCs, parallel and cross hands (rxp is circular). Much weaker fringes than expected. No fringes in scans 4/6 (trying to fix problem).
-- Nt: No fringes (fault in the elevation servo system).
-- O6: No fringes after scan 4 (input IF signal was accidentally set to C band after scan 4 due to unrelated onsite engineering work).
-- Wz: No data received due to not having real-time data transfer.
scan02
2 s integration, J0237+2848, 12:10 UTC (ref = Ef)
scan04
2 s integration, J0237+2848, 12:40 UT (ref = Ef)
Hh = Ht (see notes above)
scan06
2 s integration, J0237+2848, 13:10 UTC (ref = Ys)
scan08
2 s integration, J0319+4130, 13:40 UTC (ref = Ef)
scan10
2 s integration, J0319+4130, 14:10 UTC (ref = T6)
scan16
2 s integration, J0530+1331, 14:35 UTC (ref = Ef)
scan22
2 s integration, J0530+1331, 14:58 UTC (ref = Km)