The Rigol M300 Data Acquisition/Switch System is a modular mainframe designed for automated multichannel measurement and switching in R&D and production environments. Five module slots accommodate up to 8–10 different plug-in types, including digital multimeters, multiplexers, matrix switches, and actuators. The system delivers up to 320 switch channels per mainframe with integrated DMM scanning of 256 channels and support for 128 fully differential measurements. A 6½-digit DMM module measures DC/AC voltage and current, 2-wire and 4-wire resistance, frequency, period, and temperature via thermocouple, thermistor, RTD, and sensor inputs. The 4.3-inch color LCD display and user-friendly interface support independent operation or PC control of up to 5 mainframes via Ultra Acquire software. Data logging captures up to 100,000 time-stamped readings with interval scanning and USB archival for indefinite storage.
Technical Specifications
• Module Slots: 5 available in M300 mainframe
• Supported Module Types: Up to 8–10 types including DMM, multiplexers, matrix switches, and actuators
• Switch Capacity: Up to 320 channels per mainframe
• DMM Module (MC3065): 6½-digit resolution
– Measurement functions: DCV, ACV, DCI, ACI, 2WR, 4WR, FREQ, PERIOD, temperature (thermocouple, thermistor, RTD)
– Maximum input: 300 Vdc or 300 Vrms on analog bus
• Scanning: Up to 256 channels per mainframe; up to 128 fully differential measurements
• Data Logging: Up to 100,000 time-stamped samples internal; USB archival for extended storage
• PC Control: Single instance controls up to 5 mainframes
• Display: 4.3-inch high-resolution color LCD
• Languages: Multiple system languages supported
– Key Features
• Interval scanning with storage of 100,000 time-stamped readings
• Per-scan data archiving to USB flash drive
• Independent operation without PC connection
• Online help system
• Clear key backlight and operation prompts
– Multiplexer & Switch Modules
• MC3120: 20-channel multiplexer, two banks (A/B) with 10 two-wire channels each, fully isolated
• MC3132: 32-channel differential multiplexer, configurable 2-wire or 4-wire
• MC3324: 24-channel multiplexer with 20 voltage channels (2-wire/4-wire configurable) and 4 current-only channels
• MC3164: 64-channel single-ended multiplexer
• Matrix Switch: 4×8 two-wire configuration, 32 cross points
– Typical Applications
Automated test systems requiring high-channel-count measurement and switching; production line validation; environmental monitoring with long-term data logging; multi-sensor acquisition with selective routing.
