CV-3981/APN-221B

Technical Characteristics

• Overall Height

  7.620 inches nominal

• Overall Width

  7.800 inches nominal

• Average Life Measurement

  not rated

• Basic Shape Style

  1 rectangular or square

• Inclosure Type

  encased

• Signal Data Type Per Channel

  operating channel digital

• Operating Ac Frequency In Hertz

  400.0 nominal single voltage

• Phase

  single

• Phase

  three

• Functional Description

  processes the doppler shift information received from the receiver-transmitter,radar and derives the components of the aircraft's velocity vector as the basis for the navigation computations; digital and analog signal interfaces are provided or processed

• Supplementary Features

  designed for airborne installation

• Inclosure Material

  aluminum

• Overall Length

  12.560 inches nominal

• End Item Identification

  an/apn-221 doppler system

• Installation Design

  module

• Unpackaged Unit Weight

  20.000 pounds

• Circuit Construction Type

  solid state

• External Dc Operating Voltage In Volts

  28.0 nominal single voltage

• External Ac Operating Voltage In Volts

  26.0 nominal 1st voltage and 115.0 nominal 2nd voltage

• ~1

  to or from other units of the radar set external equipment; the digital processing and memory functions are provided by a general central processor