The Yokogawa 720230 Logic Input Module is a 16-bit digital signal acquisition component for ScopeCorder data acquisition systems. It provides two 8-bit input ports for high-speed monitoring and analysis of logic signals from industrial automation field devices. The module captures and displays digital waveforms with individual bit labeling and selective bit display control, making it essential for timing analysis and complex digital event sequence visualization in demanding test and diagnostic environments.
Technical Specifications
• Channel Count: 16 bits (two 8-bit ports)
• Sampling Rate: Up to 10 MS/s
• Bit Display: Individual bit ON/OFF control with unique labeling per bit
• Maximum Expandability: Up to 8 modules per compatible host instrument, supporting 128 bits of simultaneous logic signal display
• Input Voltage (probe-dependent): Logic Probe 702911/702912 ±35V; High-Speed Logic Probe 700986 30Vrms; Isolation Logic Probe 700987 250Vrms
• Threshold Level (probe-dependent): Logic Probe 702911/702912 ≈1.4V; High-Speed Logic Probe 700986 ≈1.4V; Isolation Logic Probe 700987 6VDC or 50VAC
• Response Time (probe-dependent): Logic Probe 702911/702912 ≤3 µs; High-Speed Logic Probe 700986 ≤1 µs; Isolation Logic Probe 700987 ≤1 ms DC / ≤20 ms AC
– Key Features
• Compatible with four logic probe types: TTL contact input probes (702911, 702912), high-speed probe (700986), and isolation probe (700987)
• Probe-selectable input characteristics allow application-specific signal conditioning
• Waveform display of all acquired logic signals
• Input voltage and threshold parameters determined by selected logic probe specifications
– Compatibility & Integration
The module integrates with DL350, DL850, and DL850V ScopeCorder instruments. Logic probe compatibility determines input range and response characteristics.
