The North Atlantic VXI-5388 is a C-size VXI card that performs high-accuracy synchro and resolver signal measurement and simulation. Operating as both an Angle Position Indicator (API) and Synchro/Resolver Simulator (SIM), it delivers 0.001° accuracy across a full 0 to 359.999° angular range with 0.001° resolution. The module uses message-based serial communication compliant with VXIbus specifications and includes automatic phase correction for stator-rotor phase shifts up to 80°. Settling time for 180° step changes is 2 seconds, with maximum tracking rate of 150°/sec. Dual-channel architecture provides independent measurement and simulation functionality.
Technical Specifications
Form Factor & Communication
• VXIbus C-size, single slot card
• Message-based serial communication, VXIbus compliant
Angular Performance
• Accuracy: 0.001° (simulation and measurement)
• Angular range: 0 to 359.999°
• Resolution: 0.001°
• Tracking rate: 150°/sec
• Settling time: 2 seconds (180° step change)
• Auto phase correction: Up to 80° between stator and rotor inputs
Synchro Mode Measurement
• Input voltage: 11.8 to 90 V Line-to-Line, programmable
• Reference voltage: 2 to 115 Vrms, programmable
• Frequency range: 47 Hz to 10 kHz (selectable: 47–400 Hz or 360 Hz–2.0 kHz)
• Accuracy: ±0.004° (360 Hz to 2.0 kHz)
Resolver Mode Measurement
• Input voltage: 2 to 26 V Line-to-Line, programmable
• Reference voltage: 2 to 115 Vrms, programmable
• Frequency range: 360 Hz to 2.0 kHz
• Accuracy: ±0.006° to ±0.0075° (2–11.7 V), ±0.004° to ±0.0052° (11.8–26 V), frequency-dependent
Simulation Channel
• Frequency range: 47 Hz to 10 kHz (selectable bands)
• Rotation modes: Clockwise, counter-clockwise, and angle slewing
• Velocity range: 0.001° to 1000°/sec, dynamically programmable
– Key Features
• Independent measurement and simulation channels
• Operates at signal levels as low as 2 V Line-to-Line
• Track or Freeze data states
• Wide programmable frequency and voltage ranges
• Auto phase correction reduces calibration complexity
– Typical Applications
• Synchro and resolver alignment and calibration
• Gyro system testing
• Fire control system evaluation
• Servo system calibration and validation
• Aerospace and defense synchro signal processing
– Compatibility & Integration
Designed for integration into VXI mainframes using standard VXIbus message-based protocols. Note: Product discontinued December 2020; calibration and repair support subject to component availability.
