Agilent/Keysight 69770A

The Agilent/Keysight 69770A is a modular data acquisition mainframe that integrates a 6½ digit (22-bit) internal Digital Multimeter with flexible plug-in module architecture for switching and signal conditioning. The 3-slot mainframe supports up to eight optional modules, enabling configurations with up to 120 single-ended channels, 96 matrix cross-points, or 60 channels per instrument depending on module selection. It delivers 0.004% basic DCV accuracy with ultra-low reading noise across 11 measurement functions including temperature, DC/AC volts, 2- and 4-wire resistance, frequency, period, DC/AC current, capacitance, and direct and bridge strain measurements.

– Technical Specifications

• Mainframe: 3-slot configuration
• Internal DMM Resolution: 6½ digit (22-bit)
• DCV Accuracy: 0.004% basic accuracy
• Measurement Functions: 11 types without external signal conditioning
• Channel Capacity: Up to 120 single-ended channels; up to 96 matrix cross-points; up to 60 channels per instrument (configuration-dependent)
• Scanning Rate: 250 channels/second maximum
• Reading Rate: 600 readings/second on single channel
• Data Storage: 50k readings non-volatile memory; up to 1 million points scanning memory; USB flash drive support (compatible models)
• Alarm Outputs: 4 TTL outputs with HI/LO limits per channel
• Power Supply: 100, 120/220, 240 Vac ±10%; 45–66 Hz
• Dimensions: 89 mm H × 255 mm W × 374 mm D
• Weight: 8 lb

– Key Features

• Modular plug-in architecture supports multiplexing, matrix, Form C switching, RF switching, digital I/O, totalize, and 16-bit analog output modules
• Integrated channel scanning at up to 250 channels/second
• HI/LO alarm limits with TTL control outputs
• 50k non-volatile data storage for power-loss retention
• Supports thermocouples, RTDs, and thermistors for temperature measurement

– Typical Applications

• Automated test and measurement in manufacturing environments
• Multi-channel data logging with alarm-based control
• Complex switching matrix applications
• Precision DC and AC signal acquisition
• Strain and bridge measurement systems

– Compatibility & Integration

The 69770A integrates with BenchVue DAQ software and operates with GPIB, RS-232, LAN, and USB interfaces depending on mainframe model variant.