A 215 to 265 GHz spectral line survey of the Sgr B2 molecularcloud By A l b e r t Numme l i n email: albert@bele.oso.chalmers.se Onsala Space Observatory, S439 92 Onsala, SWEDEN The spectrum of the Sgr B2 molecularcloud has been surveyed between 215 and 265 GHz towards 3 positions, the dense cores Sgr B2(N)and Sgr B2(M), and the quiescent core Sgr B2(NW). ... 1993)). ... 1991)). ... Albert Nummelin: Spectral line survey of the Sgr B2 molecularcloud 3 Lis D.C., Goldsmith P.F., 1991, ApJ, 369, 157. ...
... The design employs a differential structure. ... The input is adapted to 100 differential, and the outputs use standard Low Voltage Differential Signaling (LVDS). ... T/H SINGLE T/H Single Input T/H Single Output 1.35 0.15 0.2 T/H DIFFERENTIAL Input T/H Output T/H 0.1 1.3 0.05 volts volts Figure 5: Digital part and digital gate 0 1.25 -0.05 -0.1 1.2 Integrated Test System A test system is integrated on chip to evaluate the transmission to the data acquisition card (fig: 7). ...
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