NI SCXI-1193 500 MHz Multiplexer/Matrix

The NI SCXI-1193 is a 32-channel RF multiplexer switch module for high-frequency signal routing within the SCXI system architecture. It supports multiple configurations—from single 32×1 multiplexer to quad 8×1 arrangements—using electromechanical latching relays with a maximum scan rate of 100 operations per second. The module operates across DC to over 500 MHz with configuration-dependent insertion loss and bandwidth performance, making it suitable for integration with RF instruments requiring precise channel selection and signal management.

– Technical Specifications

Frequency Response
• Bandwidth: DC to over 500 MHz
• Typical 3 dB bandwidth varies by configuration: 8×1 >900 MHz, 16×1 >750 MHz, 32×1 >600 MHz
• Characteristic impedance: 50 Ω nominal
• Insertion loss (8×1): <0.9 dB (DC–200 MHz), <1.6 dB (200–500 MHz)
• Insertion loss (16×1): <1.2 dB (DC–200 MHz), <1.9 dB (200–500 MHz)
• Insertion loss (32×1): <1.4 dB (DC–200 MHz), <2.4 dB (200–500 MHz)
• RF carry power: 10 W

Electrical
• Power supply: +5 VDC at 50 mA; +18.5 to +25 VDC at 170 mA; −18.5 to −25 VDC at 170 mA
• Switching voltage rating: 150 V CAT I
• Impulse voltage withstand: 800 V
• Path resistance: typically <1.0 Ω during relay life

Physical & Environmental
• Dimensions: 1.2 × 6.8 × 7.8 in. (3.0 × 17.3 × 19.8 cm)
• Weight: 2 lb 2 oz
• Operating temperature: 0 °C to 50 °C
• Storage temperature: −20 °C to 70 °C
• Humidity: 5% to 85% noncondensing
• Altitude: up to 2,000 m

– Key Features

• Nine configurable multiplexer and matrix topologies for flexible channel routing
• Latching relay architecture for minimal power dissipation
• 36 MCX jacks plus 2 SMB trigger connectors for compact I/O density
• 50 Ω termination option available for terminated configurations
• Supports MCX-MCX, MCX-BNC, MCX-SMB, and MCX-SMA cabling (0.3 m and 1.0 m lengths)

– Typical Applications

• Multi-channel RF signal acquisition and switching
• High-frequency automated test environments
• Frequency-agile measurement systems
• Lab and production RF test benches

– Compatibility & Integration

The SCXI-1193 integrates directly into National Instruments SCXI chassis and pairs with NI data acquisition hardware for programmatic control. MCX connector standardization enables straightforward integration with external RF instruments and cabling ecosystems.