The North Atlantic 213C is a precision phase angle voltmeter and resolver/synchro-to-digital converter that translates electromechanical transducer outputs into digital format for modern control systems and data acquisition equipment. It measures phase angle and magnitude of complex AC signals while converting analog angular position data from resolvers and synchros into digital values. The instrument delivers high-accuracy angular measurement suitable for industrial automation, laboratory testing, and legacy transducer integration into contemporary digital architectures.
Technical Specifications
Device Type: Phase Angle Voltmeter / Resolver/Synchro to Digital Converter
Input Voltage Range: 300 µV to 300 V across 13 selectable ranges
Frequency Range: 10 Hz to 100 kHz (total voltmeter mode); optimized for phase-sensitive operation at 30 Hz to 10 kHz
Accuracy: ±5% full-scale
Resolution: 1° increments on parallax-free scale
Nulling Sensitivity: 2 µV (phase-sensitive null meter)
Input Impedance: 1 MΩ
Excitation Voltage (Synchro/Resolver): 2 V to 28 V L-L, programmable
Input Coupling: Direct or transformer-coupled for signal and reference paths
Power Supply: 9 V battery or AC adapter
– Key Features
• Dual-function operation: phase angle measurement and resolver/synchro conversion in one instrument
• Front panel voltage range and function selection
• Transformer switching via front panel control
• Direct or transformer-coupled input flexibility
• Digital output format for direct system integration
– Typical Applications
• Angular position measurement from synchro and resolver transducers
• Legacy electromechanical transducer modernization
• Industrial control system data acquisition
• Phase angle analysis of AC signals in laboratory environments
• Vector component measurement relative to reference voltage
– Compatibility & Integration
The 213C accepts resolver and synchro signals operating at programmable excitation voltages between 2 V and 28 V L-L. Digital output interfaces with standard control systems and data acquisition platforms, eliminating the need for external conversion modules.
