Observed 0.5–7 keV spectra of 185 XMM-CDFS sources, shown in order of PID number. Only the first three spectra are shown here and the remaining 182 spectra can be found in Appendix D. Flux density is in units of 10⁻¹⁵ erg s⁻¹ cm⁻² keV⁻¹. The energy scale is as observed and the three, vertical dotted lines indicate the rest-frame energies of 3 keV, 6.4 keV and 10 keV, expected from the adopted redshift.