The Racal Instruments 1260-45B is a high-density switching matrix module for VXIbus systems, delivering flexible signal routing and management in automated test equipment environments. This C-size, single-slot module configures into multiple matrix topologies—including two 4×32 two-wire matrices, four 4×16, two 8×16, one 8×32, one 4×64, or one 16×16—selected to match test requirements. Control via native command set (Option 01) or SCPI command set (Option 01T) enables seamless integration with Racal smart controllers. Latching relays with optional guard relays at row inputs provide reliable switching performance across DC, AC, and RF applications.
Technical Specifications
Switching Performance
• Maximum voltage: 300 VDC or ACrms (terminal-terminal or terminal-chassis)
• Maximum current per channel: 1 ADC or ACrms
• Maximum power per channel: 30 WDC, 62.5 VA
• Path resistance: ≤500 mΩ
• Isolation: >2 GΩ
AC Performance (50Ω)
• Capacitance (Hi to Lo): <50 pF open, <80 pF closed
• Bandwidth (−3 dB): 25 MHz (4×16, 4×32), 20 MHz (4×64), 10 MHz (16×16)
• Crosstalk @ 1 MHz: <−50 dB
Physical & Environmental
• Form factor: C-size, single-slot VXIbus module
• Weight: 3.07 lb (1.38 kg) without Option 01; 3.35 lb (1.51 kg) with Option 01
• Cooling: 1.0 liters/sec (0.05 mm H₂O backpressure) without Option 01S/T; 2.0 liters/sec (0.2 mm H₂O) with Option 01S/T
• Power: +5 V @ 0.4 A base; 2.8 A with Option 01 installed
Connectors
Crimp (discrete wire) or IDC (ribbon cable) types supplied.
– Key Features
• Configurable matrix topologies match application requirements
• Latching relays minimize power consumption
• Guard relays at row inputs (4×16 blocks) with jumper bypass for full latching mode
• Message-based and register-based control interfaces
– Typical Applications
• Automated test equipment signal routing
• Multi-channel switching in RF and analog test systems
• High-frequency signal matrix applications up to 25 MHz
– Compatibility & Integration
Requires Racal Instruments Option 01 (native command set) or Option 01T (SCPI) smart controller installed in the leftmost slot of a 1260-xx set.
