National Instruments NI 653x, 653X 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 newer NI 6535/6536/6537
devices to the 68-pin DAQ connectors found on older NI 6533/6534
accessories and fixturing. The 653x 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
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
Custom Wiring Example ................................................................. 11
Specifications .......................................................................................... 13
Digital I/O ........................................................................................ 13
Traces............................................................................................... 13
Power ...............................................................................................13
Physical............................................................................................ 13
Where to Go for Support......................................................................... 14
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 devices)
❑ Compatible NI high-speed digital I/O device
(NI 6535/6536/6537/654x/655x)
❑ (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.
Vis it
ni.com/manuals for the most current documentation.
You also may have documentation for any application development
environment (ADE) you are using.
NI 653x Cable Adapter User Guide 2 ni.com
Parts Locator Diagram
Refer to Figure 1 to locate connectors and components on the NI 653x
cable adapter.
1
2
8
7
6
1 Enclosure Base
2 Jacksockets (M2.5 Screw, #2-56 Socket)
3 68-Pin DAQ Connector
4 Enclosure Top Cover
3
4
5
653X CABLE ADAPTER
NATIONAL
INSTRUMENTS
Remove screws on this side of
enclosure to access terminals.
5 M2.5 x 6 mm Philips Flathead Countersunk Screws
6 Terminal Connectors
7 VHDCI Connector
8 #2-56 Custom Screw
Figure 1. NI 653x Cable Adapter Parts Locator Diagram
© National Instruments Corporation 3 NI 653x Cable Adapter User Guide
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.
1
DIGITAL DATA & CONTROL
653x
NI PCIe-
3
2
enclosure to access terminals.
Remove screws on this side of
653X CABLE ADAPTER
INSTRUMENTS
NATIONAL
4
1 PC Chassis with NI High-Speed DIO Device
2 Cable Assembly
3 Cable Jackscrews
4 NI 653x Cable Adapter
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.
NI 653x Cable Adapter User Guide 4 ni.com
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.
1
653X CABLE ADAPTER
NATIONAL
INSTRUMENTS
Remove screws on this side of
enclosure to access terminals.
1 M2.5 x 6 mm Philips Flathead Countersunk Screws
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.
© National Instruments Corporation 5 NI 653x Cable Adapter User Guide
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