ADLINK PXES-2590 - Manual (Page 24)

14 Introduction
Figure 1-11: Differential Star Trigger Routing
Star trigger functionality provides a precise trigger signal to the
peripheral modules by installation of a specific star trigger con-
troller module in the ST slot. The star trigger slot can also be
used as a general PXI Express peripheral slot if star trigger
functionality is not required.
PXI Express Hybrid Slots
7 peripheral slots are provided in the PXES-2590, all of which
are PXI Express hybrid slots. Each can accommodate a 3U
PXI Express/CompactPCI Express/ hybrid slot compatible PXI-
1/CompactPCI peripheral module.