  During the summer of 2006, the accreting X-ray pulsar EXO 2030+375 underwent
its first giant outburst since its discovery in 1985. Our observations include
the first ever of the rise of a giant outburst of EXO 2030+375. EXO 2030+375
was monitored daily with the Rossi X-ray Timing Explorer (RXTE) from 2006 June
through 2007 May. During the giant outburst, we discovered evidence for a
cyclotron feature at ~11 keV. This feature was confidently detected for about
90 days, during the brighter portion of the outburst. Daily observations of the
next five EXO 2030+375 orbits detected pulsations at all orbital phases and
normal outbursts shifted to a later orbital phase than before the giant
outburst. An accretion disk appears to be present in both the normal and giant
outbursts, suggesting that the long-term behavior is a product of the state of
the Be star disk and the accretion disk. Here we will present flux and
frequency histories from our detailed RXTE observations of the giant outburst
and the normal outbursts that surrounded it. A new orbital analysis is
presented that includes observations from 1991 through 2007 August.
