The SC11 experiment is a triaxial fluxgate magnetometer. Each axis has a range of 0 to +/- 500 nT. The sensor is mounted on a 4 m boom extended perpendicular to the spin axis. The field vector is measured four times per second. The output from the spin axis aligned sensor is also fed to a set of SC10 filter channels to provide the same frequency band outputs. The bandwidth of this magnetometer output is ~100 Hz. The same axis can be placed on a brodband channel. The filter output from SC10 provides a sensitivity of 10^-1 nT in the 20 to 200 Hz channel while the broadband output provides a sensitivity of 0.2 nT/V.

  An error analysis performed by the spacecraft manufacturer estimated that the absolute accuracy measurements of the ambient magnetic field component along the space vehicle's X-axis would be better than 1nT at 1σ confidence level. Errors in the other two axes would be less than in the X-axis. The spacecraft's maneuvers and spin provided in-flight information about the magnetometer zero levels and the spacecraft magnetic field components along those two axes.