+5 V Power Source - National Instruments NI 6602 User Manual

+5 V Power Source

© National Instruments Corporation
PXI TIO devices use PXI trigger line 7 as their RTSI clock line. The
maximum timebase provided by the PXI TIO device is phase locked to the
10 MHz PXI backplane clock. By using other PXI modules that phase lock
their board clocks to the 10 MHz PXI backplane clock, you can better
synchronize operation in a multi-module PXI system. The phase locking is
enabled by default and can be disabled by way of software. If the module
is used in a compact PCI chassis that does not have the 10 MHz PXI
backplane clock, the phase locking is automatically disabled. Additionally,
PXI trigger line 6 corresponds to PXI star trigger on PXI TIO devices.
Figure 3-9 shows the RTSI signal connection scheme for PXI TIO devices.
PXI Star 6
PXI Trigger
<0..5>
PXI Trigger 7
Figure 3-9. RTSI Signal Connection for PXI
The +5 V pin on the I/O connector supplies power from the computer
power supply through a self-resetting fuse. The fuse resets automatically
within a few seconds after removal of an overcurrent condition. The power
pin is referenced to the D GND pins and can supply power to external
digital circuitry. The power rating for this +5 V pin on the NI 660x is
+4.65 to +5.25 VDC at 1 A.
3-17
Chapter 3 Signal Connections
CtrnSource
CtrnGate
CtrnAux
CtrnInternalOutput
20 MHz Timebase
Master Timebase
NI 660x User Manual