Digital I/O Accessories and Cables
Accessories for Digital I/O
SCXI – High-Performance Modular Signal Conditioning (See Figure 1)
SCXI is a modular high-performance signal conditioning system that serves as a front
end to your DIO device. The SCXI modules for DIO offer isolation, extended voltage
ranges (up to 250 Vrms), increased current switching capabilities, and expanded
channel counts (up to 3,072 I/O lines). In addition to SCXI modules for DIO, your
SCXI signal conditioning system can include modules for analog output and general-
purpose switching when cabled to a DIO device. With SCXI, you can create
integrated, flexible high-channel-count measurement systems with signal
conditioning components tailored to your needs. See page 270 for details on SCXI
signal conditioning.
Figure 1. SCXI High-Performance Signal Conditioning
Figure 2. Digital Signal Conditioning Accessories
Figure 3. CA-1000 Configurable Signal Connectivity Solution
Figure 4. SCB-100 Shielded Connector Blocks
Figure 5. CB-50 I/O Connector Block
SCC – Portable Modular Signal Conditioning
National Instruments offers SCC modules for portable low-channel-count digital
signal conditioning. These modules mount in a compact, versatile carrier. See page
251 for details on SCC signal conditioning.
Digital Signal Conditioning Assessories (See Figure 2)
National Instruments also offers several options for low-channel-count digital signal
conditioning. These accessories provide a cost-effective solution for digital I/O
systems requiring isolated I/O or relays for controlling external devices. Most of these
products cable directly to your National Instruments digital I/O device. See page 349
for details on digital signal conditioning accessories.
CA-1000 (See Figure 3)
Configurable signal connectivity solution for connecting DIO devices to different
types of standard I/O connectors and for incorporating switches and LED indicators.
You can place this connector box under a laptop PC, on a benchtop, or in a 19 in. rack.
CA-1000 ........................................................................................................See page 351
Dimensions – 30.7 by 25.4 by 4.3 cm (12.1 by 10 by 1.7 in.)
SCB-100 (See Figure 4)
Shielded I/O connector block for easy connection of I/O signals to 100-pin digital
I/O devices. The screw terminals are housed in a metal enclosure for protection
from noise corruption. Combined with shielded cables, the SCB-100 provides
rugged, very low noise signal termination. It also includes general breadboard
areas – three on the SCB-100.
SCB-100............................................................................................................776990-01
Dimensions – 19.5 by 15.2 by 4.5 cm (7.7 by 6.0 by 1.8 in)
CB-50 I/O Connector Block with DIN-Rail Mounting (See Figure 5)
Termination accessory with 50 screw terminals for easy connection of field I/O
signals to NI 650x and NI 6527 devices. Includes one 50-pin header for direct
connection to 50-pin cables. The CB-50 includes a protective plastic base and
hardware for mounting the accessory on either a standard DIN rail or flush on a wall
or panel.
CB-50................................................................................................................776164-90
Dimensions – 13.5 by 7.3 cm (5.3 by 2.9 in.)
382 National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • info@ni.com • ni.com
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