High-Frequency Multiplexer/Matrix Modules
NI PXI-2593, NI PXIe-2593, NI SCXI-1193 NEW!
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500 MHz bandwidth
50 Ω characteristic impedance
10 W RF carry power
Operating Systems
Windows XP/2000/Me/9x/NT
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Recommended Software
150 V, CAT I switching
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LabVIEW
Fully software configurable
Unterminated multiplexer
Available in both PXI and PXI Express
versions for optimal slot placement
LabWindows™/CVI
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Measurement Studio
for Visual C++
NI Switch Executive
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Configurations
NI SCXI-1193: 32x1, dual 16x1,
Other Compatible Software
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Visual Basic
ANSI C/C++
quad 8x1, nine 3x1
NI PXI-2593/ NI PXIe-2593 (NI 2593):
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Driver/Software (included)
16x1, dual 8x1, quad 3x1
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NI-SWITCH
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Terminated multiplexer configurations
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NI SCXI-1193: 16x1, dual 8x1,
quad 4x1
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NI 2593: 8x1, dual 4x1
Sparse matrix configurations
NI SCXI-1193: 36-terminal
NI 2593: 18-terminal
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Overview and Applications
NI SCXI-1193
NI 2593
Unterminated
Multiplexer
Topology
NI PXI-2593, PXIe-2593, and SCXI-1193 are high-density 50 Ω RF relay modules.
You can programmatically configure them as unterminated multiplexers,
externally terminated multiplexers, or dimensionally flexible sparse matrices.
Each configuration handles signal frequencies from DC to beyond 500 MHz.
These single-slot switch modules use high-density push-on MCX connectors
for discrete yet manageable cabling. NI 2593 modules are designed to integrate
with high-frequency instruments such as the NI PXI-5404 frequency generator
and the NI PXI-5112 high-speed digitizer.
Unterminated
Terminated
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Terminated
32x1
16x1
8x1
1 bank
2 banks
4 banks
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–
–
–
1 bank
2 banks
4 banks
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1 bank
2 banks
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1 bank
2 banks
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4x1
3x1
9 banks
4 banks
Table 1. This table shows available multiplexer configurations.
Dimensionally Flexible Sparse Matrix Configurations
You can configure the NI 2593 modules as flexible sparse matrices, which
you can use to route signals between any pair of channels or commons
while maintaining >500 MHz bandwidth and minimizing reflections. Unlike a
traditional sparse matrix made from two multiplexers with their COM terminals
connected, these modules use a flexible architecture in which you can define
the row and column dimensions. There is no restriction on row-to-row or
column-to-column connections. For example, you can configure the 18 terminals
on the NI 2593 modules as a 2x16, 4x14, or 9x9 sparse matrix, or any size in
between. It is even possible to connect multiple crosspoints simultaneously.
Figure 1 demonstrates the configuration capabilities of an NI 2593 as a
dimensionally flexible sparse matrix.
Multiplexer Configurations
The NI 2593 and SCXI-1193 are 16- and 32-channel unterminated multiplexers,
respectively. With external 50 Ω MCX terminators (P/N: 761930-01) on half of
the channels, you can use these modules as terminated multiplexers. Table 1
shows multiplexer configurations for each module.