... We propose to use observations of the time delay of pulses from pulsars to detect lensing objects located close to the line of the sight, in order to study the distribution of dark matter in our Galaxy. ... Time delay . ... Application to the pulsar B0525+21 . ... Gravitational lensing and time delay of pulsar signal in the gravitational field of a mass are General Relativity effects which may be used as a tool to detect the observational parameters of dark matter in our Galaxy. ...

... 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). ...