1.3 GHz and 4 GHz Multiplexers
NI SCXI-1190, NI PXI-2590, NI SCXI-1191, NI PXI-2591
• 4x1 unterminated multiplexer
• 50 characteristic impedance
• High-bandwidth
Operating Systems
• Windows 2000/NT/XP
Recommended Software
• LabVIEW
• LabVIEW Real-Time Module
(PXI Modules only)
electromechanical relays
• Excellent insertion loss, VSWR,
and isolation specifications
• Fully software programmable
• LabWindows/CVI
SCXI-1190 (quad 4x1),
PXI-2590 (single 4x1)
• 1.3 GHz bandwidth
• SMB direct connectivity
• 1 A at 24 VDC capacity
• Measurement Studio
• NI Switch Executive
Other Compatible Software
• Visual Basic
• C/C++
SCXI-1191 (quad 4x1),
PXI-2591 (single 4x1)
• 4 GHz bandwidth
• SMA direct connectivity
• 330 mA at 30 VDC capacity
Driver Software (included)
• NI-SWITCH
Compliance
• CE
Overview
The National Instruments PXI-2590 and PXI-2591 are 4x1 high-
frequency unterminated multiplexing switches. The NI SCXI-1190 and
NI SCXI-1191 perform the same functions as the PXI-2590 and
PXI-2591 but also offer a quad 4x1 multiplexing configuration. The
switches are capable of switching signals from DC to 1.3 GHz
(SCXI-1190 and PXI-2590) and DC to 4 GHz (SCXI-1191 and
Ordering Information
NI SCXI-1190................................................................776572-90
NI PXI-2590 ..................................................................777987-01
NI SCXI-1191................................................................776572-91
NI PXI-2591 ..................................................................778339-01
Includes switch module and NI-SWITCH driver software.
For information on extended warranty and value added
services, see page 20.
PXI-2591). The characteristic impedance of the channels is 50
.
See page 499 for accessory and cable information.
For the SCXI-1190 and the PXI-2590, the maximum voltage rating
of the switches is 24 V with a maximum current of 1 A. For the
rms
BUY ONLINE!
SCXI-1191 and the PXI-2591, the maximum voltage rating is 30 V
rms
Visit ni.com/products and enter pxi2590, pxi2591, scxi1190,
and/or scxi1191.
with a maximum current of 330 mA. All are well suited for
applications that require the routing of high-frequency signals inside
automated test equipment (ATE) systems because they can switch
signals with a very low insertion loss. In addition, the excellent
voltage standing-wave ratio (VSWR) and isolation parameters make
these modules the perfect choice in a system geared to high-
frequency applications as shown in Table 1.
Module
Insertion Loss
< 1.5 dB
VSWR
< 1.5
< 2.5
< 1.5
SCXI-1190, PXI-2590 (@ 1.3 GHz)
SCXI-1190, PXI-2590 (@ 2 GHz)
SCXI-1191, PXI-2591 (@ 4 GHz)
< 3 dB
< 0.9 dB
Table 1. Parameters of High-Frequency Switching Modules
Extended Features and Specifications
National Instruments switch modules are built with a number of core
features that are covered in detail in the Switch Overview section.
For additional information about the PXI-2590, PXI-2591, SCXI-1190, and
SCXI-1191, including software, certifications and compliance, relay
control, etc., please see page 20. For detailed specifications, please
see page 504.
492 National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • info@ni.com • ni.com
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