The Keysight N2264A Multifunction Module integrates 12 general-purpose relays, 3 high-current relays, and 16-bit digital I/O into a single unit for data acquisition and control applications. This consolidated design reduces space requirements and system costs while delivering high-speed parallel switching with built-in relay cycle counters and comprehensive channel protection.
## Technical Specifications
**Digital I/O**
• 16 bi-directional lines, TTL compatible
• 3 lines dedicated for handshaking
• Individually addressable as bit-by-bit, dual 8-bit ports, or single 16-bit port
• 0.6 A sink capability per line for external device control
**General Purpose Relay Channels**
• 12 channels
• Switching: up to 200 V, 1 A, 60 W or 62.5 VA
**High-Current Relay Channels**
• 3 channels
• Switching: up to 5 A at 125 VDC or 200 V AC RMS
**Protection**
• Zener diode on each channel for input overvoltage protection (>42 V DC)
• ESD protection on all channels
## Key Features
• High-speed switching in parallel operation
• Built-in relay cycle counters
• TTL-compatible digital I/O with flexible addressing modes
• Screw and crimp terminal blocks for field wiring
• N2294A Connector Block available as accessory
• DIN96-to-D25/D50 cable options provided
## Typical Applications
The N2264A addresses data acquisition, automated test systems, and control applications requiring mixed-signal switching and digital I/O in compact form factors. High-current channels handle loads up to 5 A, while general-purpose relays manage lower-power switching tasks. TTL-compatible digital lines support handshaking protocols in parallel measurement systems.
## Compatibility & Integration
Designed for modular instrument chassis supporting the N2264A architecture. Compatible with the 3499A/B/C series and similar mainframe systems. Complete terminal block and cabling accessories ensure field integration flexibility. Product is obsolete; support through existing documentation and available technical overviews.
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