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NI PXI-2548

2.7 GHz 50 Ω Quad SPDT (Insertion Loss <0.9 dB)

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  • 50 Ω characteristic impedance
  • 2.7 GHz bandwidth
  • Insertion loss at 2.7 GHz <0.9 dB (typical <0.6 dB)
  • VSWR at 2.7 GHz <1.5 (typical <1.35)
  • Onboard relay counting
  • Use NI Switch Executive for calibrating losses on each PXI-2548 channel
Data Sheet  |   Configure System popup

The National Instruments PXI-2548 is a general-purpose switch module that features four (quad) independent SPDT relays suited for routing signals from DC to 2.7 GHz in 50 Ω RF applications. It can switch up to 30 Vrms or 500 mA at a maximum power rating of 10 W. Use the NI PXI-2548 to add flexibility to your switch network or to maintain uniform signal paths across multiple channels when building high-channel-count multiplexers. The module also features excellent insertion loss, voltage standing-wave ratio (VSWR), and isolation parameters to minimize signal degradation; and its onboard relay-count-tracking feature can be used to predict relay lifetime and reduce unexpected system downtime.

Note: The bandwidth specification of a switch module, which is not an absolute specification, is determined by vendor standards. Although higher frequency signals can be routed through this switch module, they will encounter more degradation than those at lower frequencies. In order to determine the best switch module for your application, review the insertion loss, VSWR, and isolation specifications of the product for the bandwidth of your application. For more information on choosing the right RF switch for your application, review the ‘Guide to Selecting an RF Switch’ linked in the 'Resources' section of this page.

Data Sheet | View Pricing and Purchasing Information »

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Module Accessories   Chassis, Controllers, Modules Software & Services
Step 1: Verify Device and Quantity Selection
Part
Number		 Description Est Ship Days Glossary Definition US Dollars
(change) 		Qty
778572-48 NI PXI-2548 12 - 20 $ 1,599.00

Each NI PXI-2548 requires:

NI PXI-2548
Step 2: Select Cable
Part
Number		 Description Est Ship Days Glossary Definition US Dollars
(change) 		Qty
Shielded
763443-01 SMA100 Cable (12.7 cm) 10 - 15 $ 69.00
763444-01 SMA100 Cable (38.1 cm) 10 - 15 $ 79.00
Step 3: Select Optional Accessories
Part
Number		 Description Est Ship Days Glossary Definition US Dollars
(change) 		Qty
Software
778546-09 NI Switch Executive Development System + 1 Yr SSP 5 - 10 $ 1,199.00
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Specifications Documents


Specifications Summary

General 
Form FactorPXI Platform
PXI Bus TypePXI Hybrid Compatible
OS SupportWindows, Real-Time, Linux, Mac OS
Switches 
Switch TypeGeneral-Purpose Relay, RF
Relay TypeElectromechanical
ConnectivityCables
Product CertificationsC-Tick, CE, FCC Part 15, UL - Product Safety
Number of Relays4 SPDT
Maximum Switching Voltage DC (Pollution Degree 2)30 VDC
Maximum Switching Voltage DC (Pollution Degree 1)30 VDC
Maximum Switching Voltage AC30 Vrms
Maximum Switching Current0.5 A
Maximum Carry Current0.5 A
Maximum Switching Power10 W
Bandwidth2.7 GHz
Relay Count TrackingYes
Voltage CategoryCAT I
Path Resistance (Typical)0.25 Ohm
VSWR (Typical)1.15 @ 1.5 GHz, 1.35 @ 2.7 GHz
Isolation (Typical)39 dB
Insertion Loss (Typical)0.6 dB
TerminatedNo
Characteristic Impedance50 Ohm
Mechanical Relay Life1000000 cycles
Scan Rate45 cycles/s
Timing/Triggering/Synchronization 
Synchronization Bus (RTSI)Yes
T-clock CapabilityNo
TriggeringAnalog
External ClockingNo

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