The Agilent 81910A Photonic All-parameter Analyzer provides simultaneous measurement of signal loss and delay (dispersion), which were previously treated as separate tasks and addressed by separate test solutions. Photonic signal loss parameters include fiber optic insertion loss (IL) along with polarization dependent loss (PDL), group delay (GD) and differential group delay (DGD). The Agilent 81910A characterizes the impact a component has on wavelength dependent signal delay caused by the component; with direct measurements of group delay and differential group delay.