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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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National Instruments, NI, ni.com, and LabVIEW are trademarks of National Instruments Corporation. Refer to the Terms of Use section on ni.com/legal for more information about National Instruments trademarks. Other product and company names mentioned herein are trademarks or trade names of their respective companies. For patents covering National Instruments products, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your CD, or ni.com/patents. © 200
