Sundance SMT702 - Manual (Page 23)

Reference clock selection is made on the board via a jumper (J11). Position 1-2
selects the PXI reference clock (100Mhz provided by the PXI Express chassis –
Factory setting). Position 2-3 selects the on-board 250Mhz crystal.
Figure 8 - Standard SMT702 - PXI Express Peripheral Module
Optionally, the module can be a 3U Hybrid Peripheral Slot Compatible PXI-1 Module,
which means it comes with two connectors: XP4 (PXI timing and synchronisation
signals) and P1 (32-bit, 33MHz PCI Signals). This version of the SMT702 can only
plug in a PXI Express Hybrid Slot (PXI Express chassis, such as the NI-1062Q from
National Instrument or equivalent).
Figure 9 - SMT702-HYBRPXI32 (opt.) - Hybrid Peripheral Slot Compatible PXI-1 Module