Руководство по эксплуатации National Instruments SHC68-H1X38

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USER GUIDE
Digital Flying Lead Cable
Accessory for Single-Ended NI Digital Waveform Generator/Analyzers
The NI SHC68-H1X38 cable is a single-ended cable that breaks out each
NI digital waveform generator/analyzer signal into two 0.1 inch header
receptacles, one receptacle each for the signal and ground. The
NI SHC68-H1X38 cable provides an easy way to connect NI single-ended
high-speed digital waveform generator/analyzer devices to various types of
devices and circuits for interfacing, test

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What You Need to Get Started To set up and use the NI SHC68-H1X38 cable, you need the following items: ❑ Compatible NI digital waveform generator/analyzer, installed in a PXI chassis, compactPCI chassis, or PCI slot ❑ The documentation included with the digital waveform generator/analyzer and driver software Related Documentation The NI digital waveform generator/analyzer ships with several documents designed to familiarize you with different aspects of the module. The documentation set inc

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Parts Locator Refer to Figure 1 to locate connectors and components on the NI SHC68-H1X38 cable. The lead pairs are shown in more detail in Figure 2. 1 2 3 1 Lead Pairs 2 Removable Sleeving 3 68-Pin VHDCI Connector Figure 1. NI SHC68-H1X38 Cable Parts Locator Diagram © National Instruments Corporation 3 Digital Flying Lead Cable User Guide

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4 3 1 2 1 0.25 in. diameter 0.1 in. pitch 3 Microcoaxial wire compatible receptacles 4 Ground 2 Strain-relief and label Figure 2. Detailed Parts Locator Diagram for the Lead Pairs Connecting Signals Each DIO, PFI, and clock channel of the NI digital waveform generator/analyzer connects to a corresponding pair of leads on the NI SHC68-H1X38 cable. The NI SHC68-H1X38 cable is separated into two bundles of 19 channels, and each channel is split into a pair of leads for connecting the signal and

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Table 1. NI Digital Waveform Generator/Analyzer Signal Descriptions (Continued) Channel Signal Description Bundle CLKOUT / PFI 4 For devices that have a DDC CLK OUT Bundle A channel, this signal is the exported sample clock signal. Otherwise, this is PFI 4. PFI <1..3> Programmable functional interface PFI PFI 1: Bundle A <1..3>. PFI <2..3>: Bundle B Reserved / PFI 0 For devices that have PFI 0 on a Bundle B front-panel SMB connector, this channel is reserved and should not be used. Otherwis

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Using Your Accessory The NI SCH68-H1X38 cable breaks out every signal through a 50Ω characteristic impedance microcoaxial cable, which is then split into the two leads with receptacles. This cable was designed for both acquisition and generation operations with your single-ended NI digital waveform generator/analyzer. Refer to the Termination sections in the NI Digital Waveform Generator/Analyzer Help to learn how to correctly terminate your signals to achieve optimal signal quality. For o

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Specifications Digital I/O DIO Channels......................................... 32, single-ended Control I/O Channels ............................. 6, single-ended Typical Propagation delay ..................... 13.5 ns Typical channel-to-channel skew........... ±250 ps Typical characteristic impedance........... 50 Ω Typical Input capacitance ...................... 150 pF Physical Length .................................................... 1.5 m I/O Connectors .................................

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