The North Atlantic VXI-5388-S3420 is a C-size VXI synchro/resolver processor that combines simulation and angle measurement on a single module. It delivers 0.001° resolution across a 0–359.999° range with ±0.015° accuracy, tracking rates to 150°/sec, and 2-second settling time on 180° steps. The card operates via VXIbus message-based serial communication and includes auto phase correction up to 80° between stator and rotor inputs.
Technical Specifications
• Angular Resolution: 0.001°
• Angular Range: 0 to 359.999° (programmable 0–360° or ±180° in simulation mode)
• Measurement Accuracy: ±0.015°
• Tracking Rate: Up to 150°/sec
• Settling Time: 2 seconds for 180° step change
• Auto Phase Correction: Up to 80° between stator and rotor inputs
• Operating Frequencies: 5.5 kHz and 15.6 kHz (resolver only)
• Line-to-Line Voltage: 2–5 Vrms
• Output Load Capability: Up to 6 VA with remote sense lines
• Output Impedance (400 Hz): 0.03 Ω at 11.8 V L-L
• Power Supply: +5 Vdc, 2.2 A
• Form Factor: VXIbus C-size, single slot
• Front Panel Connectors: 2 × 15-pin female (simulator); 9-pin male (API); D-type mating connectors supplied
– Key Features
• Dual-function processor: simulator and angle position indicator in one module
• Programmable velocity from 0.001 to 1000°/sec in constant or slew modes
• Track or freeze data states
• Native VXIbus protocol support (no MATE/CIIL)
– Typical Applications
• Gyro system testing
• Fire control system testing
• Servo system alignment
• Position and velocity simulation and control
– Compatibility & Integration
The S3420 integrates directly into VXIbus mainframes via message-based serial communication. Remote sense lines accommodate heavy loads in distributed test configurations.

















