Racal Instruments 1260-50B

The Racal Instruments 1260-50B is a C-size VXIbus switching module engineered for RF multiplexing and high-frequency signal routing. It handles wide-band signals up to 200 MHz and integrates into VXI test systems alongside function generators, counters, and oscilloscopes. The module delivers exceptional RF performance with low insertion loss and superior isolation across its operating bandwidth. Software-configurable multiplexer channels eliminate the need for physical reconfiguration, streamlining test setup and teardown cycles.

– Technical Specifications

Multiplexer Configuration
• Sixteen 1×4 multiplexers (bi-directional)
• Software reconfigurable

RF Performance (into 50 Ω)
• Bandwidth (−3 dB): 200 MHz
• Insertion loss @ 100 MHz: 40 dB
• Isolation @ 100 MHz: > 40 dB
• Isolation @ 200 MHz: > 35 dB
• VSWR @ 100 MHz: ≤ 1.3:1

Electrical Characteristics
• Maximum switchable voltage: 200 VDC or 200 VAC peak
• Maximum switchable current per channel: 0.5 A DC, 0.5 A AC peak
• Maximum carry current: 1 A DC, 1 A AC peak
• Maximum switchable power per channel: 10 W DC, 10 VA, 10 W RF (50 Ω)
• DC path resistance: ≤ 2 Ω

– Key Features

• VXIbus C-size form factor for chassis integration
• Coaxial connector housing with purchasable connector pins
• Optional coaxial cables available in 2, 6, and 12-foot lengths (tested to 1 GHz)
• Smart card control via Option 01 or Option 01T interface

– Compatibility & Integration

Operation requires an Option 01 (Master) or Option 01T Smart Card. The module integrates with standard VXI chassis and supports message-based and register-based control protocols.