1964_IMPORT_AND_EXPORT_(STRATEGIC_COMMODITIES)_REGULATIONS — Page 130

G 130

CAP. 60]

Import and Export (Strategic Commodities) Regulations

[1988 Ed.

[Subsidiary]

IL 1568

Equipment, as follows-

(a) All classes of devices, regardless of other characteristics, identified in sub-items (b), (c), (d), (e), (f), (g), (j) and (k) below, which are designed to operate below -55°C or above +125°C;

(b) Synchros and resolvers (and special instruments rated to have the same characteristics as synchros and resolvers in (1) and (2) below, such as Microsyns, Synchro-Tels and Inductosyns), possessing any of the following characteristics:

(1) A rated electrical error of 7 minutes of arc or less or of 0.2 per cent or less of maximum output voltage;

(2) A rated dynamic accuracy for receiver types of 1° or less, except that for units of size 30 (76.2 mm (3 inches) in diameter) or larger a rated dynamic accuracy of less than 1°;

(3) Multi-speed from single shaft types;

(4) Designed for gimbal mounting,

(e) Amplifiers electronic or magnetic specially designed for use with resolvers, the following:

(1) Isolation types having a variation of gain constant (linearity of gain) of 0.2 per cent or better;

(2) Summing types having a variation of gain constant (linearity of gain) or an accuracy of summation of 0.2 per cent or better;

(3) Employing solid state Hall effect;

(d) Induction potentiometers (including function generators and linear synchros), linear and non-linear, possessing any of the following characteristics:

(1) A rated conformity of 0.25 per cent or less, or of 13 minutes of arc or less;

(2) Employing solid state Hall effect;

(3) Designed for gimbal mounting;

(e) Induction rate (tachometer) generators, synchronous and asynchronous, with a housing diameter of 50.8 mm (2 inches) and smaller and a length (without shaft-ends) of 101.6 mm (4 inches) and smaller or with a diameter-to-length ratio greater than 2:1, having one or more of the following characteristics:

(1) With a rated linearity of 0.1 per cent or less;

(2) All temperature-compensated or temperature-corrected types;

(f) Servo-motors/gear-head of plain) as follows:

(1) Designed to operate from power sources of more than 300 Hz except those designed to operate from power sources of over 300 Hz up to and not exceeding 400 Hz with a temperature range from -55°C to +125°C;

(2) Designed to have a torque-to-inertia ratio of 50,000 radians per second per second or greater;

(3) Incorporating special features to secure internal damping;

(g) Precision potentiometers (and special instruments rated to have the same characteristics as potentiometers in (1) and (2) below, such as Vernistats), as follows:

(1) Linear potentiometers having a constant resolution and a rated linearity of better than 0.05 per cent absolute;

(2) Non-linear potentiometers having a variable resolution and a rated conformity of:

(i) 1 per cent or less when the resolution is inferior to that obtained with a linear potentiometer of the same type and of the same track length; or

(ii) 0.5 per cent or less when the resolution is better than or equal to that obtained with a linear potentiometer of the same type and of the same track length;

(3) Designed for gimbal mounting;

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