National Instruments NI CB-2162 User manual

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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 complete the
following tasks:
• 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.
Caution To ensure the specified EMC performance of the device connected to the
NI CB-2162, this product must be installed in a shielded enclosure and used only
with shielded cables and accessories. Do not use unshielded cables or accessories
unless they are installed in a shielded enclosure with properly designed and shielded
input/output ports and connected to the product using a shielded cable. If unshielded
cables or accessories are not properly installed and shielded, the EMC specifications
for the product are no longer guaranteed. Refer to Mounting the NI CB-2162 in an
Enclosure for installation guidance.
Contents
What You Need to Get Started ................................................................................................. 2
Related Documentation ............................................................................................................ 2
Parts Locator Diagram.............................................................................................................. 3
Installing Cables ....................................................................................................................... 4
Connecting Signals ................................................................................................................... 5
Terminating Signals.................................................................................................................. 9
Using the NI CB-2162 Prototyping Area ................................................................................. 13
Mounting the NI CB-2162 in an Enclosure.............................................................................. 14
Specifications............................................................................................................................ 17
Where to Go for Support .......................................................................................................... 19
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2|ni.com |NI CB-2162 User Guide
What You Need to Get Started
To set up and use the NI CB-2162, you need the following items:
NI SHC68-C68-D2 or NI C68-C68-D4 cable assembly
Compatible NI digital waveform generator/analyzer module installed in a PXI chassis,
compact PCI chassis, or desktop PC
CA-1000 (NI part number 777664-01), rack-mount side panels (NI part number
777665-01), and an NI CB-2162 CA-1000 mounting kit for mounting the NI CB-2162 in
an enclosure
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/PFI 5 series termination.
30-gauge wire
Wire-wrap tool
1 × 2 header receptacle(s)
DC power supply for the prototyping area
The documentation included with the digital waveform generator/analyzer module and the
driver software included with your NI device
Related Documentation
National Instruments digital waveform generator/analyzer modules ship with several documents
designed to familiarize you with different aspects of the module. The titles and location of the
documents vary based on the instrument driver that supports the NI device, but you should have
the following types of documentation:
• 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
module and configuring it to generate or acquire your first samples.
• Help—This online document provides more in-depth information about the hardware
capabilities of the digital waveform generator/analyzer module, theory of operation
discussion, and information on programming flow and software reference.
• Specifications—This printed document provides specifications for the NI hardware.
Visit ni.com/manuals for the most current documentation.
You also may have documentation for any application development environment (ADE) you are
using.
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NI CB-2162 User Guide |© National Instruments |3
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
1
J3
J4
4
3
2
9
7
5
6
4/DDC
CLKOUT 5/
STROBE
F6 F5 F4 F3F2 F1
8
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4|ni.com |NI CB-2162 User Guide
Installing Cables
A cable connects the NI CB-2162 to the digital waveform generator/analyzer. Figure 2 shows
how to install a 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 supported 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 or NI-DAQmx and the digital waveform generator/analyzer by
following the installation procedure in the Getting Started Guide that shipped with your
device.
Caution Before attaching any cables or accessories, install the digital waveform
generator/analyzer. Refer to the Getting Started Guide that shipped with your device
for instructions on installing the module.
2. Attach either end of the 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 cable assembly to the DDC connector of the NI CB-2162 and
secure them together with the captive screws on the cable connector.
1 PXI Chassis with NI Digital Waveform
Generator/Analyzer
2Cable
3 NI CB-2162 Accessory
NI PXIe-6536
25 MHz Digital I/O
DIGITAL DATA & CONTROL
ACCESS ACTIVE
NI PXI-1042
3
2
J15
J3
J4
4/DDC
CLKOUT
5/
STROBE
F6 F5 F4 F3 F2 F1
1
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NI CB-2162 User Guide |© National Instruments |5
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.
Figure 3 shows the DDC connector pinout of the NI CB-2162.
Figure 3. NI CB-2162 DDC Connector Pinout
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
DIO 31
GND
DIO 29
GND
DIO 27
GND
DIO 25
RESERVED
DIO 23
GND
DIO 21
GND
DIO 19
GND
DIO 17
GND
DIO 15
GND
DIO 13
GND
DIO 11
GND
DIO 9
GND
DIO 7
PFI 1
DIO 5
GND
DIO 3
PFI 3
DIO 1
GND
DDC CLK OUT/PFI_4
GND
DIO 30
GND
DIO 28
GND
DIO 26
GND
DIO 24
GND
DIO 22
GND
DIO 20
GND
DIO18
GND
DIO 16
GND
DIO 14
RESERVED/PFI_0
DIO 12
GND
DIO 10
GND
DIO 8
GND
DIO 6
RESERVED
DIO 4
GND
DIO 2
PFI 2
DIO 0
GND
STROBE/PFI_5
GND
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6|ni.com |NI CB-2162 User Guide
Note Refer to the help file for your device for information about the number of
available DIO channels on your device. DIO <20..31> or PFI_0 may not be
applicable to your device. The function of DDC CLK OUT/PFI_4 and
STROBE/PFI_5 may be unique to your device.
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.
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NI CB-2162 User Guide |© National Instruments |7
Using 1 ×2 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 1 × 2 header receptacle to a
coaxial cable assembly.
Note Header receptacle assemblies are not included with the NI CB-2162, but you
can create custom assemblies by purchasing parts from vendors such as 3M.
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 1 × 2 header receptacle connections.
Figure 4. 1 × 2 Header Receptacle
1 1 × 2 Header Receptacle 2 Header Pin Pair
2
1
DIO
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8|ni.com |NI CB-2162 User Guide
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
J5
J6
4/DDC
CLKOUT 5/
STROBE
F6 F5 F4 F3F2 F1
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NI CB-2162 User Guide |© National Instruments |9
Making a Wire-Wrap Connection
Make connections from the appropriate 1 × 1 header with a standard wire-wrap tool and
30-gauge or similar wire. Strip the wire and insert it into the receptacle end of the wire-wrap tool.
Place the wire-wrap tool over the appropriate header pair pin, and twist the tool around the
header post. You then can make connections to the device under test (DUT) as defined by the
device manufacturer. Connect the DIO channel and ground header pins for each channel being
used.
Figure 6 provides an illustration for making a wire-wrap connection.
Figure 6. Wire-Wrap Connections
Terminating Signals
Termination of high-speed digital signals is necessary to prevent signal reflections and to force
signal channels to a known state when no signal is present. Sockets for terminating resistors are
connected to all DIO and control channels on the NI CB-2162. These sockets are labeled in
Figure 1.
Note Proper termination needs are application-specific. For some special
considerations for choosing resistor values, refer to the TerminatingControl Channel
Signals section.
1 Wire-Wrap Tool
2 Stripped Wire
3 Header Pin Receptacle
1
2
3
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