Keysight / Agilent / HP 34980A Multifunction Switch / Measure Unit

The Keysight 34980A is a modular multifunction switch and data acquisition unit designed for automated test, design verification, and data logging applications. Its eight-slot mainframe accepts any combination of 21 plug-in modules, enabling customized configurations without the cost premium of VXI or PXI systems. The unit integrates a 6½-digit DMM, general-purpose and RF switching, digital I/O, analog outputs, and frequency counter functions into a single platform capable of handling signal routing to 26.5 GHz, voltage measurements to ±300 V, and switching speeds up to 1,000 channels/second.

– Technical Specifications

Measurement & Switching
• Maximum switching frequency: 26.5 GHz
• Maximum voltage: ±300 V
• Maximum bandwidth: 45 MHz
• Maximum scanning speed: 1,000 channels/second
• Maximum switch current: 5 A (8 A carry)
• DMM resolution: 6½-digit (22-bit)
• DC voltage measurement accuracy: 0.004%

Switching Configurations
• Multiplexer channels: Up to 560 two-wire per mainframe
• Matrix cross-points: Up to 4,096 (1- or 2-wire selectable) or 1,024 two-wire per mainframe
• General-purpose relays: 28 × 1 A Form C, 4 × high-power (5 A, 150 W), 20 × Form A (5 A, 150 W), 64 × Form A (1 A switch/2 A carry)
• RF/microwave switches: SPDT 1×2 terminated and unterminated switches rated to 26.5 GHz

Digital I/O & Control
• Digital I/O: 64 bits bidirectional with pattern memory; eight 8-bit channels with programmable polarity, thresholds to 5 V, and 7 handshaking protocols; four 8-bit channels
• Frequency counter/totalizers: Two 20 MHz channels; one 100 kHz gated totalizer
• Analog outputs: Four channels ±16 V DC or ±20 mA DC; two ±12 V outputs; waveform output to 200 kHz update rate (16-bit resolution) with over 500,000-point on-board memory

DMM Measurements
• DC and AC voltage, current, and frequency
• 2- and 4-wire resistance
• Temperature via thermocouple, RTD, and thermistor

– Typical Applications

Automated production test, device characterization, design verification, environmental monitoring, signal routing and multiplexing, and mixed-signal data acquisition in R&D and manufacturing environments.