Her X-1 has been monitored nearly continuously in soft X-rays ( 2-12 keV ) since February 1996 by the ASM on board RXTE .
We present analysis of these observations which include 23 contiguous 35-day cycles .
We present the best yet average 35-day cycle lightcurve for Her X-1 .
35-day lightcurve features such as eclipses and absorption dips , and the alternating occurrence of the Main High and Short High states , are well measured .
The occurrence of X-ray eclipse during the Low state is confirmed as is the presence of Main High states that “ turn-on ” sharply at orbital phases 0.23 and 0.68 .
The Main High state covers 35-day phase 0-0.31 and the Short High state covers phase 0.57-0.79 , with phase 0 defined by Main High state turn-on .
We find extended ingresses and egresses for the Short High state .
Marching pre-eclipse absorption dips progressively become shallower during the Main High state .
The marching pre-eclipse dip period is best determined from reanalysis of archival data as 1.651 \pm . 002 days if the dip marching can be extrapolated from the Main High state into the Short High state or 1.646 \pm . 003 using dips within single Main High states alone .