PXI-665X Datasheet, PDF (1/4 Pages) National Instruments Corporation – PXI and PXI Express Timing and Synchronization Control

PXI and PXI Express Timing and Synchronization Control
NI PXI-665x, NI PXIe-6672
• Works with all PXI and PXI Express
modules
• Multichassis PXI synchronization
• Onboard routing of internal and external
clock and trigger signals
• PXI slot 2 star trigger controller (PXI-665x)
• PXI Express system timing slot star
trigger controller (NI PXIe-6672)
• Onboard high-stability references
• OCXO, 50 ppb (PXI-6653)
• TCXO, 1 ppm (PXI-6652 and
NI PXIe-6672)
• Reference clock import and
export with PLL capabilities
• DC to 105 MHz, high-resolution
DDS clock generation
• Software trigger generation
• Frequency measurement capabilities
Operating Systems
• Windows Vista/XP
• LabVIEW Real-Time
Recommended Software
• LabVIEW
• LabWindows^TM/CVI
Driver Software (included)
• NI-Sync
>> For complete specifications, see the NI PXI-665x and the
NI PXIe-6672 user manuals at ni.com/manuals.
Overview and Applications
The National Instruments PXI-665x and NI PXIe-6672 timing and
synchronization control modules use the trigger bus, star trigger,
and system reference clock features of PXI to implement advanced
multimodule or multichassis synchronization. You can vastly improve
the accuracy of measurements, implement advanced triggering
schemes, or synchronize multiple modules and/or multiple chassis
to act as a single system for high-channel-count applications.
Features
NI PXI-6651 NI PXI-6652 NI PXI-6653 NI PXIe-6672
Slave Module Master Module Master Module Master Module
Front Panel Connectivity
CLK10 in




CLK10 out
–



General-purpose PFI lines
2 SMB
6 SMB
6 SMB
6 SMB
Programmable voltage
threshold




Trigger Routing
Star trigger source
(PXI_STAR)




PXI trigger bus (PXI_TRIG)




Onboard Clock Sources
10 MHz timebase
–
TCXO (1 ppm) OCXO (50 ppb) TCXO (1 ppm)
DDS programmable clock
–
DC to 105 MHz DC to 105 MHz DC to 105 MHz
Table 1. NI PXI-665x and NI PXIe-6672 Features
CLKIN
CLKOUT
AC Coupled
Clock Detector
OCXO/TCXO
Clock
PLL
OCXO
Calibration
DAC
OCXO (6653)
TCXO (6652)
PXI_CLK10_IN
PXI_CLK10
PFI 0
PFI 1
PFI 2
PFI 3
PFI 4
PFI 5
Driver/
Comparator
PFI 0
Threshold
DAC
Driver/
Comparator
PFI 1
Threshold
DAC
Driver/
Comparator
PFI 2
Threshold
DAC
Driver/
Comparator
PFI 3
Threshold
DAC
Driver/
Comparator
PFI 4
Threshold
DAC
Driver/
Comparator
PFI 5
Threshold
DAC
DDS
DDS Clock
CLOCK and
TRIGGER
Routing
PXI_STAR<0...12>
PXI_TRIG<0...7>
PCI Interface
Figure 1. Block Diagram of PXI-6652 and PXI-6653 Master Modules