The Seiko Instruments G191C-21R0A is a full dot-matrix LCD display board engineered for visual signal path representation in lightwave switching systems. The module integrates a liquid crystal panel with electroluminescent backlight, CMOS driver ICs, and a reflecting mirror to deliver both graphic and character output with wide viewing angle and high contrast performance.
Technical Specifications
• Display Type: Full dot-matrix LCD module with integrated EL backlight
• Drive Duty Cycle: 1/128
• Frame Frequency: 70 ± 5 Hz
• Common Driver ICs: Two CMOS ICs with 80 drive outputs each
• Segment Driver ICs: Three CMOS ICs with 80 drive outputs each, supporting up to 192 bits of data
• Backlight: Electroluminescent (EL), integrated
• Liquid Crystal Drive: AC voltage between frames; LC drive control signal designated as ‘M’
• Power Consumption (Standby/Operation): Related modules typically ≤1.4 µA; consumption >1.4 µA indicates potential circuit block defect
– Key Features
• Wide viewing angle and high contrast LCD panel
• Full dot-matrix construction enables simultaneous graphics and character display
• Thin module profile with embedded optical reflecting mirror
• SCPI-compatible command interface for automated system control
• GPIB and RS-232 communication ports for test equipment integration
• AC-driven liquid crystal design prevents electrolytic degradation
– Typical Applications
• Visual signal path configuration in Agilent/HP 86060B and 86060C lightwave switches
• Display output for optical networking test systems
• System status and parameter indication in automated switching networks
– Compatibility & Integration
The G191C-21R0A integrates directly into lightwave switch architectures alongside optics modules, switch assemblies, and communications boards. SCPI command support enables seamless integration into test automation frameworks via GPIB or RS-232 interfaces, facilitating real-time signal path visualization and system configuration.
