DDC IAC-37001 Synchro/Resolver Module

The DDC IAC-37001 is a VXI C-size register-based module that combines independent synchro/resolver angle generation and measurement in a single card. It converts synchro or resolver signals into high-resolution digital data and generates precision synchro/resolver outputs, delivering the accuracy and isolation required in aerospace and industrial control systems.

## Technical Specifications

**Measurement Section**
• Resolution: 20 or 16 bits (programmable)
• Accuracy: 18 arc seconds (20-bit); 36 arc seconds (16-bit)
• Angular Range: 0–360 degrees
• Reference Input: Transformer isolated, 11.8/26/90 V line-to-line, 360–5000 Hz, ±50° phase shift maximum, 150 kΩ minimum impedance, 500 V breakdown voltage
• Signal Input: Transformer isolated, 11.8/26/90 V line-to-line, 360–5000 Hz, ±50° phase shift maximum, 150 kΩ minimum impedance, 500 V breakdown voltage

**Generation Section**
• Resolution: 16 bits
• Accuracy: ±25 arc seconds (no load); ±36 arc seconds (1.5 VA load)
• Angular Range: 0–360 degrees
• Reference Input: Transformer isolated, 11.8/26/90 V line-to-line
• Signal Output: Transformer isolated, 11.8/26/90 V line-to-line, 1.5 VA load capacity, ±3.5° phase shift maximum, ±0.15 Ω output impedance, 500 V breakdown voltage
• Dynamic Rotation: Programmable clockwise or counter-clockwise angular rotation via internal data rate control

## Key Features

• Dual independent measurement and generation channels
• Transformer isolation on all synchro/resolver interfaces
• Programmable resolution (16/20-bit measurement)
• Selectable voltage levels (11.8, 26, 90 V)
• Mode selection: synchro or resolver operation
• Internal/external rate signal configuration for dynamic rotation
• Wrap-around self-test capability
• Full 360° measurement and generation range

## Typical Applications

• Aircraft attitude and heading reference systems
• Rotating machinery position feedback and control
• Precision angle encoder interfaces
• Synchro-to-digital conversion in legacy avionic systems
• Multi-axis position simulation and test

## Compatibility & Integration

The IAC-37001 integrates into standard VXI C-size slot architecture. All signal inputs and outputs employ transformer isolation to prevent ground loops and ensure noise immunity in high-voltage industrial environments. Programmable self-test simplifies system validation.