Racal Instruments 1260-45C

The Racal Instruments 1260-45C is a high-density switch matrix module engineered for VXIbus system integration. This single-slot C-size module delivers two independent 8×16 matrix configurations, enabling complex signal routing and switching in test automation environments. With 300 VDC/ACrms maximum switching voltage per channel and 1 A maximum current capability, the 1260-45C addresses demanding measurement and switching applications. Low path resistance (≤500 mΩ) and exceptional isolation (>2 GΩ) ensure signal integrity across switching operations.

– Technical Specifications

• Matrix Configuration: Two 8×16 matrices (two-wire)
• Maximum Switchable Voltage: 300 VDC or ACrms (terminal-to-terminal or terminal-to-chassis)
• Maximum Switchable Current: 1 ADC or ACrms per channel
• Maximum Switchable Power: 30 WDC, 62.5 VA per channel
• Path Resistance: ≤500 mΩ maximum
• Isolation: >2 GΩ
• Capacitance (Hi to Lo): <50 pF open channel; <80 pF closed channel
• Bandwidth: 10 MHz (16×16 configuration)
• Crosstalk: <−50 dB at 1 MHz
• Cooling Requirement: 1.0 liters/sec airflow, 0.05 mm H₂O backpressure
• Weight: 3.07 lb (1.38 kg) without Option 01; 3.35 lb (1.51 kg) with Option 01

– Key Features

• Guard relays at row inputs revert to open state upon power loss, safely disconnecting UUT signal paths
• Guard relay bypass via jumpers enables full latching configuration for maintained signal paths during power-down conditions
• CRIMP (discrete wire) or IDC (ribbon cable) connector options
• One set of mating connectors supplied; additional connectors available separately
• Message-based control interface (Option 01) or message/register-based interface with SCPI command set (Option 01T)

– Typical Applications

Signal routing in automated test systems, RF/analog switching matrices, multi-channel data acquisition routing, and unit under test (UUT) signal path management.

– Compatibility & Integration

Designed for VXIbus-compatible chassis. Compatible with Option 01 and Option 01T Smart Cards for enhanced control interface capabilities.