Overview
The Racal Instruments 1260-54 is a mature, high-performance RF multiplexer module engineered for precision test and measurement applications. With configurable six 1×4 tree multiplexers and a frequency range to 1.3 GHz, this VXI-format switching card delivers excellent signal integrity and low noise performance, making it ideal for oscilloscope, spectrum analyzer, network analyzer, and distortion analyzer measurements.
Key Features
- Six independent banks of channels configured as 1×4 tree multiplexers
- Frequency range up to 1.3 GHz with excellent VSWR performance
- Outstanding crosstalk and isolation performance between channels
- Low-noise design for switching low-level RF signals
- Optional on-board 50 Ω termination of input signals
- Tree configuration eliminates unterminated stub effects for superior bandwidth performance
- Compact VXI single-slot module form factor
Technical Specifications
- Frequency Range: DC to 1.3 GHz
- Configuration: Six 1×4 tree multiplexers (independent banks)
- Form Factor: VXI single-slot C-size module
- User Connector: IDC-style connector
- Input Termination: Optional on-board 50 Ω impedance
- Part Number: 1260-54
- Manufacturer: Racal Instruments (Astronics Test Systems)
Typical Applications
- RF signal routing in automated test equipment (ATE) systems
- Oscilloscope and spectrum analyzer multiplexing
- Network and distortion analyzer switching matrices
- VHF/UHF matrix building blocks for modular test systems
- Low-level signal measurement and switching
- Time interval counter measurements
- General-purpose RF test and development applications
Compatibility & Replacements
Compatible With
- VXI chassis and VXI-based test systems
- Racal Instruments 1260 series controllers and test platforms
- Oscilloscopes with VXI interfaces
- RF and microwave measurement instruments
- Standard VXI trigger and clock bus
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator or technical support before ordering. The 1260-54 is a mature Racal product; check equipment documentation to confirm module interchangeability.
Works With
- VXI LBus messaging protocol
- Register-based switch control interfaces
- Standard VXI system controllers
- GPIB-to-VXI gateway controllers
- Racal Instruments measurement and control software







