Phase Angle Voltmeter, VXI

Model VXI 227

Phase Angle Voltmeter, VXI

***This product is discontinued.  The closest alternative product is the NAI 2250A, benchtop PAV*** The 2250A can be found at the link below:

NAI’s 227 is a broadband Phase Angle Voltmeter on a single slot VXI C-size board. This instrument measures phase angle, total, fundamental, in-phase, and quadrature. Typical applications include servo system alignment and avionics tests requiring small signal measurements in the presence of common-mode voltages, noise, and harmonics. Specifically designed for the Synchro/Resolver and LVDT/RVDT marketplace, the 227 is ideally suited for defense, industrial, and commercial applications.



  • Broadband capabilities from 10 Hz to 100 kHz
  • Phase accuracy of 0.10°
  • Phase sensitive voltage accuracy of 0.08%
  • 360° offset capability
  • 5-digit voltage and 0.01° phase angle resolution
  • 3 mV to 300 Vrms range
  • Opto-isolated, high-impedance inputs
  • Isolated auto-ranging inputs
Document DownloadsDate
227 Specification Sheet