scope:

This Standard relates to Synchros, 60 and 400 Hz. It is not complete in itself but shall be read in conjunction with Def Stan 59-27 (Part 1), 'Precision instrument, rotating servocomponents, Part 1: General requirements and common tests', hereinafter referred to as Def Stan 59-27 (Part 1), in which the latter shall be regarded as forming an inherent part of this document.

The Standard gives information on or states the requirements for those attributes which are relevant to synchros:

- definitions, terms and conventions

- type designations and marking

- test requirements and methods of test

- nature of test equipment.

Physical and performance requirements for individual types of standard synchros are given in the relevant Supplementary Detail Sheets.

NOTE: Performance figures and their limits stated in the relevant Supplementary Detail Sheet are based on a. close tolerance power supply and on test conditions which are strictly controlled. Under service conditions, these figures may be modified by the effects of power supply variations and of environmental conditions.