High-Density Multiconfiguration Matrix Modules
Terminal Block
SCXI-1333
Configuration (Row by Column)
Quad 4x16
Column Expansion Via Row Connection
External wires
With HVAB or matrix expansion cable.
Examples: 4x128, 4x256
With matrix expansion cable (2 cables required).
Examples: 8x64, 8x128
External wires
External wires
External wires
External wires
External wires
Row Expansion Via Column Connection
With matrix expansion plug.
Examples: quad 8x16, quad 16x16
With matrix expansion plug.
Examples: 8x64,16x64, 32x64
With matrix expansion plug.
Examples: 16x32, 32x32
With matrix expansion plug.
Examples: 32x16, 64x16
External wires
External wires
External wires
External wires
SCXI-1334
4x64
NI SCXI-1129
SCXI-1335
8x32
SCXI-1336
SCXI-1337
SCXI-1339
NI 2529
TB-2634
TB-2635
16x16
Dual 8x16
Dual 4x32
4x32
8x16
Table 1. NI 2529 and SCXI-1129 Configuration and Matrix Expansion
Expansion with the SCXI-1129
Matrix modules can serve as building blocks for creating configurations well
beyond the size of a single module. Connecting the rows of two modules
doubles the column count. Likewise, connecting the columns of two modules
doubles the row count. For example, you can expand a 4x64 matrix, made up of
one SCXI-1129 module and one SCXI-1334 terminal block, to a 4x128, 4x192,
4x256, and so forth, by connecting the columns of multiple SCXI-1129 modules
via the terminal block. To expand the columns of the SCXI-1129, you can use
expansion cables. Expansion cables connect four differential signals. Hence,
you must use two matrix expansion cables for each expansion with the
SCXI-1335 because it has eight rows. You can expand the row count of the
SCXI-1129 with expansion plugs, which connect the columns of two adjacent
switch modules as shown in Figure 1. With the expansion plugs, you can
create the 128x16 matrix in less than five minutes. For further information
on matrix expansion, refer to the tutorial,
Matrix Switch Expansion Guide,
at
http://zone.ni.com/devzone/cda/tut/p/id/3628.
SCXI Analog Routing
You can increase the flexibility of your switch system with the addition of the
high-voltage analog bus (HVAB). Using the HVAB, you can easily route high-
voltage or low-voltage analog signals between multiple switch modules or
instruments without the need for external wiring (assuming it is safe to do so).
For example, you can use the HVAB to effortlessly create a 4x256 matrix from
four SCXI-1129 modules in the 4x64 matrix configuration (SCXI-1334 terminal
block). Without the HVAB, the 4x256 matrix requires external wiring or cables.
The HVAB works with the SCXI-1127, SCXI-1128, and SCXI-1129 modules.
Signal Connections
You can choose from several solutions for your signal connections:
■
Terminal blocks provide screw terminals, solder cups, or headers
for easy connections
A shielded backshell features a 180-pin connector housing
to accommodate custom cables on the SCXI-1129
Mass interconnect solutions from industry leaders
■
■
SCXI Relay Control
Every SCXI switch system requires an external switch controller. The switch
controller uses the digital communications bus on the SCXI chassis to control
the switch circuitry. An NI 4021 switch controller, available for both PCI and
PXI, is the recommended SCXI switch controller.
Contact your local National Instruments sales representative for information
on these products.
Software
All National Instruments PXI and SCXI switch modules are shipped with
NI-SWITCH, an IVI-compliant driver that offers complete functionality for
all switch modules. For additional assistance in configuring, programming,
and managing higher-channel-count switching systems, NI Switch Executive
software provides an easy-to-use, intelligent switch management and visual
routing environment.
BUY ONLINE at ni.com or C
ALL 800 813 36
93 (U.S.)
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NI [ NATIONAL INSTRUMENTS CORPORATION ]
