National Instruments 653 Series User manual

USER GUIDE

NI 653x Cable Adapter

The NI 653x cable adapter interfaces with National Instruments high-speed

digital I/O (DIO) devices. The cable adapter provides an easy way to

connect the Very High Density Connector Interface (VHDCI) connectors,

labeled as Digital Data & Control, on the NI 6535/6536/6537 devices and

NI 6535B/6536B/6537B devices to the 68-pin DAQ connectors found on

older NI 6533/6534 accessories and fixturing. The cable adapter is also

compatible with the NI 654x and NI 655x digital pattern

generator/analyzer devices.

For best signal integrity, NI recommends using the NI 6535/6536/6537 and

6535B6536B/6537B devices with newer accessories such as the

NI CB-2162 and NI SMB-2163.

This guide explains how to set up and use the NI 653x cable adapter.

Contents

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

Related Documentation........................................................................... 2

Parts Locator Diagram ............................................................................ 3

Installing Cables...................................................................................... 4

Removing the NI 653X Cable Adapter from its Enclosure .................... 5

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

NI 6535/6536/6537 or NI 6535B/6536B/6537B

Custom Wiring Example............................................................... 12

Specifications .......................................................................................... 15

Digital I/O ........................................................................................ 15

Traces............................................................................................... 15

Power ............................................................................................... 15

Physical............................................................................................ 15

Where to Go for Support......................................................................... 16

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NI 653X Cable Adapter User Guide 2 ni.com

What You Need to Get Started

To set up and use the NI 653x cable adapter, you need the following items:

❑NI SHC68-C68-D2 or NI C68-C68-D4 cable assembly

(for NI 6535/6536/6537/654x/655x and NI 6535B/6536B/6537B

devices)

❑Compatible NI high-speed digital I/O device

(NI 6535/6536/6537/654x/655x or NI 6535B/6536B/6537B)

❑(Optional) 22- to 26-gauge wire

❑(Optional) The documentation included with the NI high-speed DIO

device and the driver software included with your device

❑(Optional) NI 6533 or NI 6534 supported terminal block

Related Documentation

National Instruments high-speed DIO devices ship with several documents

designed to familiarize you with different aspects of the device. The titles

and location of the documents vary based on the 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

high-speed DIO device 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 high-speed DIO device, 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 may also have documentation for any application development

environment (ADE) you are using.

©National Instruments 3 NI 653X Cable Adapter User Guide

Parts Locator Diagram

Refer to Figure 1 to locate connectors and components on the NI 653x

cable adapter.

Figure 1. NI 653x Cable Adapter Parts Locator Diagram

1 Enclosure Base

2 Jacksockets (M2.5 Screw, #2-56 Socket)

3 68-Pin DAQ Connector

4 Enclosure Top Cover

5M2.5×6 mm Phillips Flathead Countersunk Screws

6 Terminal Connectors

7 VHDCI Connector

8 #2-56 Custom Screw

NATIONAL

INSTRUMENTS

653X CABLE ADAPTER

Remove screws on this side of

enclosure to access terminals.

NI 653X Cable Adapter User Guide 4 ni.com

Installing Cables

An SHC68-C68-D2 or C68-C68-D4 cable connects the NI 653x cable

adapter to the NI high-speed DIO device. Figure 2 shows how to install the

cable.

Figure 2. Connecting a SHC68-C68-D2 or C68-C68-D4 Cable

to the NI 653x Cable Adapter

Caution Before connecting the cable, disconnect power from the NI device and any other

connected hardware to prevent damage to the hardware and personal injury. NI is not liable

for damage resulting from improper connections.

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

adapter:

1. Insert the cable into the cable adapter.

2. Tighten the cable jackscrews.

Caution Before attaching any cables or accessories, install the NI high-speed DIO device.

Refer to the Getting Started Guide that shipped with your device for instructions on

installing the device.

1 PC Chassis with NI High-Speed DIO Device

2 Cable Assembly

3 Cable Jackscrews

4 NI 653x Cable Adapter

DIGITAL DATA & CONTROL

NI PCIe-

653x

NATIONAL

INSTRUMENTS

653X CABLE ADAPTER

Remove screws on this side of

enclosure to access terminals.

©National Instruments 5 NI 653X Cable Adapter User Guide

Removing the NI 653x Cable Adapter from its Enclosure

You will need to remove the NI 653x cable adapter from its enclosure to

connect signals. To remove the cable adapter from its enclosure, complete

the following steps:

1. Remove the screws from the cable adapter enclosure top cover,

as shown in Figure 3.

Figure 3. Remove Screws from the Enclosure

2. Remove the enclosure top cover.

Note Be sure to remove the screws from side with the NI logo label, as shown in Figure 3.

1 M2.5 ×6 mm Phillips Flathead Countersunk Screws

NATIONAL

INSTRUMENTS

653X CABLE ADAPTER

Remove screws on this side of

enclosure to access terminals.

NI 653X Cable Adapter User Guide 6 ni.com

Connecting Signals

The NI 653x cable adapter provides connectivity to up to 32 of the

single-ended DIO channels of an NI high-speed DIO device. Each DIO,

PFI, and clock channel of the NI high-speed DIO device connects to a

corresponding pin on the NI 653x cable adapter. The 32 DIO channels are

directly connected between the two bulk connectors. PFI <0..5> from the

NI 6535/6535B, NI 6536/6536B, and NI 6537/6537B VHDCI connector

are connected to a 6-position screw terminal. PFI <0..7> from the

NI 6533/6534 68-pin DAQ connector are connected to an 8-position screw

terminal.

PFI channels must be manually connected through screw terminals for

flexibility and to ensure correct signal routing. You can make connections

between the PFI channels using 22- to 26-gauge wire.

The NI 6533/6534 devices have specific applications for PFI channels and

thus require custom wiring to be compatible. An example of how to make

these connections is provided in the NI 6535/6536/6537 or

NI 6535B/6536B/6537B Custom Wiring Example section.

©National Instruments 7 NI 653X Cable Adapter User Guide

Figure 4 shows the screw terminal locations on the NI 653x cable adapter.

Figure 4. NI 653x Signal Connections

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.

6535/6/7 PFI

6533/4

PFI

J1 J4

GND +5V

NI 653X Cable Adapter User Guide 8 ni.com

Figures 5 and 6 show pinouts for the VHDCI connector and 68-pin DAQ

connector, respectively.

Figure 5. VHDCI Connector Pinout (NI SHC68-C68-D2 or NI C68-C68-D4 Cable)

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

©National Instruments 9 NI 653X Cable Adapter User Guide

Figure 6. 68-pin DAQ Connector (NI 6533/6534 Fixture or Accessory)

+5 V

PFI 2

PFI 6

PFI 0

PFI 4

PFI 5

PFI 1

PFI 7

PFI 3

P0.0

GND

P0.3

P0.4

GND

P0.7

P1.0

P1.1

GND

R GND

GND

P1.6

P1.7

P2.0

GND

P2.3

P2.4

GND

P2.7

P3.0

GND

P3.3

P3.4

GND

P3.7

R GND

GND

D PULL

GND

C PULL

GND

R GND

P0.1

P0.2

GND

P0.5

P0.6

GND

P1.2

P1.3

P1.4

P1.5

GND

R GND

P2.1

P2.2

GND

P2.5

P2.6

GND

P3.1

P3.2

GND

P3.5

P3.6

GND

NI 653X Cable Adapter User Guide 10 ni.com

Table 1 describes the VHDCI signals shown in Figure 5. Table 2 describes

the DAQ connector signals shown in Figure 6.

Note Refer to your device documentation for supported channels.

Note The NI 6535/6536/6537/654x/655x and the NI 6535B/3536B/6537B do not provide

+5 V. If your fixtures require this, access to the +5 V signal on the DAQ connector is

provided through the unpopulated W1 through-hole solder pad.

Table 1. VHDCI Connector Pinout Descriptions (NI 6535/6536/6537/654x/655x and NI 6535B/6536B/6537B)

Pin Signal Description Connection

DIO <0..31> Bidirectional digital data channels 0 through 31. P0 <0..7>, P1 <0..7>,

P2 <0..7>, or P3 <0..7>

on a 68-pin DAQ

connector

PFI <0..5> Programmable functional interface (PFI) channels

0 through 5.

6-position screw

terminal (J4)

GND Ground reference for signals. —

RESERVED These channels are reserved for system use.

Do not connect signals to these channels.

—

Table 2. DAQmx Connector Pinout Descriptions (NI 6533/6534)

Pin Signal Description Connection

P0 <0..7> Bidirectional digital data port 0 channels 0 through 7. VHDCI DIO <0..7>

P1 <0..7> Bidirectional digital data port 1 channels 0 through 7. VHDCI DIO <8..15>

P2 <0..7> Bidirectional digital data port 2 channels 0 through 7. VHDCI DIO <16..23>

P3 <0..7> Bidirectional digital data port 3 channels 0 through 7. VHDCI DIO <24..31>

PFI <0..7> Programmable functional interface (PFI) channels

0 through 7.

8-position screw

terminal (J3)

+ 5 V DC power Unpopulated W1

C PULL,

DPULL

Power on state control NC

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