Agilent/Keysight N2261A-N2291A

The N2261A is a 40-channel General Purpose Relay Module delivering high-speed switching for automated test and measurement systems. Each channel provides an independent Single-Pole-Single-Throw (SPST) armature latching relay rated for 200 V and 1 A per channel, with maximum switching power of 60 W (DC) or 62.5 VA (AC RMS). The module supports simultaneous operation of up to 10 channels at 80 channels/sec scan rate, enabling efficient parallel test execution.

– Technical Specifications

• Relay Configuration: 40 independent SPST latching relays with built-in cycle counters
• Switching Ratings (Per Channel): 200 V (DC/AC RMS), 1 A (DC/AC RMS), 60 W / 62.5 VA
• Module Power: 20 A maximum current, 1200 W / 1250 VA maximum power
• Contact Resistance: < 0.5 Ω initial closed-channel resistance
• Thermal Offset: 10¹⁰ Ω channel-to-channel and channel-to-chassis (40 °C, 50% RH)
• Isolation (AC Capacitance): < 10 pF channel-to-channel, < 20 pF channel-to-chassis
• Scan Rate: 80 channels/sec maximum
• Simultaneous Channels: Up to 10 channels operational in parallel
• Bandwidth: 10 MHz
• RF Performance (50 Ω): Insertion loss < 0.10 dB at 100 kHz, < 0.20 dB at 1 MHz, < 0.50 dB at 10 MHz; crosstalk < -70 dB at 100 kHz, < -50 dB at 1 MHz, < -30 dB at 10 MHz

– Key Features

• Configurable for break-before-make (BBM) or multiple-channel open/close modes
• Supports both SCPI and 3488A operating modes
• Parallel drive circuits enable high-throughput multi-channel switching
• Low thermal offset for precision measurement applications
• Extensive relay life for high-cycle-count testing environments

– Typical Applications

• Automated test equipment (ATE) signal routing and switching
• Multi-channel RF and analog switching matrices
• High-speed parallel test execution in production environments
• High-voltage and high-power switching in test systems

– Compatibility & Integration

Designed as a plug-in module for Keysight/Agilent switch mainframes. The N2291A screw terminal block accessory is available to simplify field wiring connections.