National Instruments NI PXI-6561 用户手册

You can generate or acquire digital data with the NI digital waveform 
generator/analyzer using NI-HSDIO. You also can run the NI-HSDIO 
examples to demonstrate the functionality of your device.

The NI-HSDIO API features a set of operations and attributes that exercise 
all the functionality of the device, including configuration, control, and other 
device-specific functions.

Information about programming with NI-HSDIO is available in the 
NI Digital Waveform Generator/Analyzer Help. This online document 
contains hardware information, concepts, a detailed function/VI reference 
for NI-HSDIO, and information specific to your device.

The NI-HSDIO examples demonstrate some of the functionality of the 
NI digital waveform generator/analyzers that you can use or integrate into 
your applications.

For the location of example programs that you can use as a basis for your 
first NI-HSDIO program, refer to Programming»Getting Started with 
NI-HSDIO in the NI Digital Waveform Generator/Analyzer Help.

This section contains front panel connector figures and connector description
tables that describe the signal connection options for NI digital waveform 
generator/analyzers.

NI 654X/655X Front Panels and Connectors

The NI 654X/655X front panels contain four connectors—three SMB jacks 
(CLK IN, PFI 0, and CLK OUT) and one 68-pin VHDCI connector 
(DIGITAL DATA & CONTROL, or DDC).

Figure 8 shows the NI 6541 front panels and pinout, which are identical to 
those of the NI 6542. The DDC signals are described in Table 4. The 
SMB connectors are described in Table 7. The LEDs are described in 
Tables 8 and 9.