National Instruments CB-2162 Manuale utente

USER GUIDE

NI CB-2162

Single-Ended Digital I/O Accessory

The NI CB-2162 is a connector block and prototyping board for National

Instruments digital waveform generator/analyzer modules. The

NI CB-2162 provides an easy way to:

• Terminate digital I/O (DIO) and control channels

• Connect to other devices for testing and debugging

• Develop and interface to prototype circuits

• Probe DIO and control channels

This guide explains how to set up and use the NI CB-2162 single-ended

DIO accessory.

Contents

What You Need to Get Started ............................................................... 2

Related Documentation........................................................................... 3

Parts Locator Diagram ............................................................................ 4

Installing Cables...................................................................................... 5

Connecting Signals ................................................................................. 6

Using 1x2 Header Receptacles ........................................................ 9

Using a Ribbon Cable ...................................................................... 10

Making a Wire-Wrap Connection.................................................... 11

Terminating Signals ................................................................................ 12

Minimizing the Effects of Stubs ...................................................... 12

Terminating DIO Channel Signals .................................................. 12

Terminating Control Channel Signals ............................................. 14

Using the NI CB-2162 Prototyping Area................................................ 15

Connecting Power............................................................................ 16

Prototyping Circuits......................................................................... 16

Replacing Components .................................................................... 16

Specifications .......................................................................................... 17

Digital I/O ........................................................................................ 17

Resistors........................................................................................... 17

NI CB-2162 User Guide 2 ni.com

LED ..................................................................................................17

Prototyping Area ..............................................................................17

Traces ...............................................................................................17

Power................................................................................................17

Physical.............................................................................................17

Technical Support Resources ..................................................................19

NI Web Support................................................................................19

Worldwide Support ..........................................................................19

What You Need to Get Started

To set up and use the NI CB-2162, you need the following items:

❑SHC68-C68-D2 cable assembly

❑Compatible NI digital waveform generator/analyzer, installed in a PXI

or CompactPCI chassis

You also may need the following optional items:

❑Resistors and 10-pin single-inline packaged resistor networks for

pull-up/pull-down and series termination.

❑The NI CB-2162 ships populated with a 0 Ωresistor. A 50 Ωresistor

also is included for optional STROBE series termination.

❑30-gauge wire

❑Wire-wrap tool

❑1x2 header receptacle(s)

❑DC power supply for the prototyping area

❑The documentation included with the digital waveform

generator/analyzer module and the NI-HSDIO driver software

©National Instruments Corporation 3 NI CB-2162 User Guide

Related Documentation

National Instruments digital waveform generator/analyzer modules ship

with several documents designed to familiarize you with different aspects

of the module. The documentation set includes the following pieces:

•NI Digital Waveform Generator/Analyzer Getting Started

Guide—This printed document should be the first thing you read.

Its purpose is to guide you through setting up the digital waveform

generator/analyzer and configuring it to generate or acquire your first

samples.

•NI Digital Waveform Generator/Analyzer Help—This online

document provides more in-depth information about the hardware

capabilities of the digital waveform generator/analyzer, theory of

operation discussion, and information on programming flow and

software reference.

• NI digital waveform generator/analyzer module specifications—This

printed document provides specifications for the NI hardware.

These documents also are located in the Start menu at Program Files»

National Instruments»NI-HSDIO»Documentation. Visit

ni.com/manuals for the most current documentation.

You also may have documentation for any application development

environment (ADE) you are using.

NI CB-2162 User Guide 4 ni.com

Parts Locator Diagram

Refer to Figure 1 to locate connectors and components on the NI CB-2162.

Figure 1. NI CB-2162 Parts Locator Diagram

1 68-Pin Digital Data & Control (DDC) Connector

2 Termination Sockets

3 Control and Ground Header Pairs

4 Prototyping Area Power Connectors

5 Prototyping Area Power LED

6 Prototyping Area Power and Ground Solder Pads

7 Prototyping Area

8 Labeling Strips

9 DIO and Ground Header Pairs

J15

©National Instruments Corporation 5 NI CB-2162 User Guide

Installing Cables

The NI SHC68-C68-D2 cable is designed to connect the NI CB-2162 to the

digital waveform generator/analyzer. Figure 2 shows how to install this

cable.

Figure 2. Connecting a 68-Pin Digital Waveform Generator/Analyzer to the CB-2162

Refer to Figure 2 as you complete the following steps to install the

NI SHC68-C68-D2 cable:

Caution Before connecting the cable, disconnect power from the module, accessory, and

any other connected hardware to prevent damage to the hardware and personal injury. NI is

not liable for damage resulting from improper connections.

1. Install NI-HSDIO and the digital waveform generator/analyzer by

following the installation procedure in the NI Digital Waveform

Generator/Analyzer Getting Started Guide.

1 PXI Chassis with NI Digital Waveform

Generator/Analyzer

2 SHC68-C68-D2 Cable

3 NI CB-2162 Accessory

NI PXI-6551

50 MHz Digital I/O

DIGITAL DATA & CONTROL

PFI 0

ACCESS ACTIVE

CLK

OUT

J15

NI PXI-1042

NI CB-2162 User Guide 6 ni.com

Caution Before attaching any cables or accessories, install the digital waveform

generator/analyzer in a PXI/CompactPCI chassis. Refer to the NI Digital Waveform

Generator/Analyzer Getting Started Guide for instructions on installing the module.

2. Attach either end of an NI SHC68-C68-D2 cable assembly to the

DDC connector of the digital waveform generator/analyzer module

and secure the cable with the captive screws on the cable connector.

3. Attach the other end of the NI SHC68-C68-D2 cable assembly to the

DDC connector of the NI CB-2162 and secure them together with the

captive screws on the cable connector.

Connecting Signals

Each DIO, PFI, and clock channel of the digital waveform

generator/analyzer connects to a corresponding pin on the NI CB-2162.

Refer to Figure 1 for the location of these pins on the NI CB-2162.

Caution Before powering down the digital waveform generator/analyzer module, remove

power from the prototyping area of the NI CB-2162. NI is not liable for any damage

resulting from improper signal connections.

©National Instruments Corporation 7 NI CB-2162 User Guide

Figure 3 shows the DDC connector pinout of the NI CB-2162.

Figure 3. NI CB-2162 DDC Connector Pinout

Note Refer to the NI Digital Waveform Generator/Analyzer Help for information about

the number of available DIO channels on your device. DIO<20..31> may not be applicable

to your device.

DIO31

GND

DIO29

GND

DIO27

GND

DIO25

RESERVED

DIO23

GND

DIO21

GND

DIO19

GND

DIO17

GND

DIO15

GND

DIO13

GND

DIO11

GND

DIO9

GND

DIO7

PFI 1

DIO5

GND

DIO3

PFI 3

DIO1

GND

DDC CLK OUT

GND

DIO30

GND

DIO28

GND

DIO26

GND

DIO24

GND

DIO22

GND

DIO20

GND

DIO18

GND

DIO16

GND

DIO14

RESERVED

DIO12

GND

DIO10

GND

DIO8

GND

DIO6

RESERVED

DIO4

GND

DIO2

PFI 2

DIO0

GND

STROBE

GND

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 16x2 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, or STROBE on the NI CB-2162 using a 1x2 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 External sample clock source for pattern

acquisition.

DDC CLK OUT Exported sample clock signal.

PFI <1..3> Programmable functional interface (PFI)

channels 1 through 3.

GND Ground reference for signals.

RESERVED These channels are reserved for system use.

Do not connect signals to these channels.

©National Instruments Corporation 9 NI CB-2162 User Guide

Using 1x2 Header Receptacles

Each signal and ground header pair is labeled on the NI CB-2162 and in

Figure 1. These header pairs are arranged so that you can make quick

connections using a 1x2 header receptacle, such as the 3M Monosignal

Socket Connector (3M part number TS0870), to a coaxial cable assembly.

Connectivity is made by inserting the receptacle onto the appropriate

header pair. Refer to the receptacle documentation to assure that proper

connections are made to signal and ground.

Figure 4 shows how to make 1x2 header receptacle connections.

Figure 4. 1x2 Header Receptacle

1 1x2 Header Receptacle 2 Header Pin Pair

DIO

NI CB-2162 User Guide 10 ni.com

Using a Ribbon Cable

The header pairs on the NI CB-2162 are available for single wire probing.

You also can use 32-pin ribbon cables to easily connect a large number of

channels to other devices. Cable type and quality can dramatically affect

how well the signal integrity is maintained. NI recommends using short

twisted-pair ribbon cables.

Refer to the device or cable manufacturer for additional information on

proper connectivity to the NI CB-2162 signal and ground connections.

Figure 5 shows how to connect a ribbon cable to the accessory.

Figure 5. Using a Ribbon Cable with the NI CB-2162

J15

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