The Astronics/EADS/Racal 1260-18 is a VXI C-size high-density switch module featuring 152 SPST channels for signal routing in aerospace, military, and industrial test systems. Each channel handles up to 2 A at 250 VAC or 220 VDC with maximum switching power of 60 W and 125 VA per channel. The module supports message-based and register-based control via VXIbus, user-configurable relay grouping through equate programming lists, and relay coil current monitoring for operational confidence checking. Path resistance remains below 0.5 Ω with thermal EMF under 15 µV, while AC performance into 50 Ω delivers insertion loss below 0.1 dB at 100 kHz rising to 0.7 dB at 10 MHz, crosstalk better than −80 dB at 100 kHz, and isolation exceeding 80 dB at 100 kHz. Open-channel capacitance is capped at 50 pF input-to-ground and output-to-ground, with input-to-output capacitance under 5 pF. The module integrates into standard VXI platforms and accepts a 160-pin mating connector.
## Technical Specifications
• **Channels:** 152 SPST
• **Switching Current:** Up to 2 A per channel
• **Voltage Rating:** Up to 250 VAC or 220 VDC per channel
• **Maximum Switching Power:** 60 W, 125 VA per channel
• **Path Resistance:** <0.5 Ω
• **Thermal EMF:** <15 µV
• **Input/Output Capacitance:** <50 pF each; <5 pF I-to-O
• **Data Rate:** 1 kHz
• **Operating Altitude:** 10,000 ft
• **Non-Operating Altitude:** 15,000 ft
## Key Features
• AC insertion loss <0.1 dB at 100 kHz, <0.25 dB at 1 MHz, <0.7 dB at 10 MHz
• Crosstalk <−80 dB at 100 kHz; 80 dB at 100 kHz; >55 dB at 1 MHz
• Relay coil current monitoring for operational assurance
• Equate programming for multi-relay closure with single command
• Option 01 and Option 01T control module compatibility
## Typical Applications
• Aerospace and military test systems
• Industrial signal routing
• Complex electronic system switching
## Compatibility & Integration
• VXI C-Size form factor
• 160-pin mating connector
• Formerly sold under Racal Instruments brand
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