NI CB-2162 User Guide 8 ni.com
Table 1 describes the DDC signals shown in Figure 3.
The NI CB-2162 provides connectivity to up to 32 of the single-ended
DIO channels of an NI digital waveform generator/analyzer. The 32 DIO
channels are divided into two bundles of 16 × 2 header pins. Each bundle
is grouped by signal and ground pairs. The ground pins provide ground
return paths for the DIO channels.
You can make connections to the DIO channels, the PFI channels,
DDC CLK OUT/PFI_4, or STROBE/PFI_5 on the NI CB-2162 using a
1 × 2 header receptacle, ribbon cable, a wire-wrap technique, or by
soldering directly to the pins. Examples of how to make these connections
are provided in the following sections.
Caution Connections that exceed any of the maximum ratings for the NI CB-2162 or the
NI digital waveform generator/analyzer module can damage the module and the computer.
Maximum input ratings are provided in the Specifications section and in the specifications
document that shipped with the digital waveform generator/analyzer. NI is not liable for
any damage resulting from such signal connections.
Table 1. DDC Connector Pinout Descriptions
DDC Pin Signal Description
DIO <0..31> Bidirectional digital data channels 0 through 31.
STROBE/PFI_5 External sample clock source for pattern
acquisition or general-purpose PFI*.
DDC CLK
OUT/PFI_4
Exported sample clock signal or general-purpose
PFI.
PFI <0..3> Programmable functional interface (PFI)
channels 0 through 3.
GND Ground reference for signals.
RESERVED These channels are reserved for system use.
Do not connect signals to these channels.
*Refer to your device documentation for support.
