National Instruments NI 6602 User Manual page 21

Chapter 2 Device Overview
Note The PXI CLK10 in pin is used as the PXI Star pin in other slots. The PXI Star pin is
not used for the PXI backplane clock.
NI PXI-6608 in Slot 2
of PXI Chassis
10 MHz
OCXO
80 MHz
VCXO
Phase
Lock
Loop
NI PXI-6608 or NI PXI-6602
in Slot 3 of PXI Chassis
10 MHz
OCXO
80 MHz
VCXO
Phase
Lock
Loop
NI 660x User Manual
Slot 2, the chassis disables its internal clock, then uses the OCXO clock
instead, illustrated in Figure 2-7.
80 MHz Phase Locked to
10 MHz PXI Backplane Clock
10 MHz PXI Backplane Clock
80 MHz Phase Locked to
10 MHz PXI Backplane Clock
10 MHz PXI Backplane Clock
Figure 2-7. OCXO as the 10 MHz PXI Backplane Clock
TIO(0)
PXI CLK10 in
(Driving
10 MHz
Supplied by
OCXO)
TIO(1)
TIO(0)
PXI Star
(Not Used
for
Backplane
Clock)
TIO(1)
2-10
PXI Backplane
10 MHz
Circuit
toDrive
10MHz
PXI
Backplane
Clock
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