778572-58
National Instruments
778572-58
National Instruments
Description
The National Instruments PXI-2558 (Part Number: 778572-58) is a broadly useful single-pole double-throw (SPDT) switch module designed for RF applications, offering flexibility and uniform signal paths for high-channel-count multiplexers. Users should consider VSWR performance at the frequency of interest to ensure optimal signal routing with this switch network.
The National Instruments PXI-2558 (Part Number: 778572-58) is a broadly useful single-pole double-throw (SPDT) switch module designed for RF applications. This PXI RF Relay Module can be utilized to add adaptability to a video switch network or to maintain uniform signal paths over various channels when assembling high-channel-count multiplexers. The ideal switch should have a VSWR equivalent to 1, but a VSWR of 1.8 or less at the frequency of the signal being routed is typically sufficient. The bandwidth of a switch is not related to its VSWR specification, making it essential to consider the VSWR performance at the frequency of interest for the user's application. When using the National Instruments PXI-2558 Switch Network, users should first check whether insertion loss and VSWR specifications align with the system requirements. It is recommended to avoid cascading multiplexers if possible and to use SPDT relays and multiplexers to ensure the signal path length remains consistent across all channels. This ensures that discrepancies in measurements between channels are minimized.
| Made By | National Instruments |
|---|---|
| Part number | 778572-58 |
| Product type | PXI RF Relay Module |
| Switch configuration | 2.5 GHz 75 Ohm Quad SPDT (Single-Pole Double-Throw) Relays |
| Manufacturer | National Instruments |
| VSWR specification | VSWR of 1.8 or less at the frequency of interest |
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Question:
What is the part number of the National Instruments PXI-2558?
Answer:
The part number of the National Instruments PXI-2558 is 778572-58.
Question:
What type of switch module is the PXI-2558?
Answer:
The PXI-2558 is a single-pole double-throw (SPDT) switch module designed for RF applications.
Question:
What is the significance of having a VSWR of 1.8 or less for the PXI-2558?
Answer:
A VSWR of 1.8 or less at the frequency of the signal being routed is typically sufficient for the PXI-2558 and ensures improved performance of the switch in RF applications.
Question:
How does the bandwidth of a switch relate to its VSWR specification?
Answer:
The bandwidth of a switch is not related to its VSWR specification, thus it is important to consider the VSWR performance specifically at the frequency of interest for the user's application.
Question:
What recommendations are provided for using the National Instruments PXI-2558 Switch Network?
Answer:
When using the National Instruments PXI-2558 Switch Network, it is recommended to avoid cascading multiplexers and to use SPDT relays and multiplexers to keep signal path length consistent across all channels, minimizing discrepancies in measurements.