1971-HKRS30-16-30_Part07 — Page 8

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Inductosyos), possessing any of the following character- istics--

(1) A rated electrical error of 10 minutes or less or of 0.25% or less of maximum output voltage;

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

(iii) Multi-speed from single shaft types;

(iv) Employing solid state Hall effect;

(v) Designed for gimbal mounting;

(e) Amplifiers, electronic or magnetic, specially designed for

use with resolvers, the following-

(1) Isolation types baving a variation of gain constant (linearity of gain) of 02% or better;

(i) Summing types having a variation of gain constant (linearity of gain) or an accuracy of summation of 02% or belles;

(iii) Employing solid state Hall effect;

(c) Induction potentiometers (including function generators and linear synchros). linear and non-linear, posscasing any of the following characteristics-

() A rated conformity of 0.5% or less, or of 18 minutes or lesst

(0 Employing solid state Hall effect;

(i) Designed for gimbal mountiną:

(e) Induction rate (lachometer) generatora, synchronous and

asynchronous, as follows.

(Employing solid state Hall effect;

(ii) With a housing diameter of 2 inches (50 mun) and smaller and a length (without shaft-ends) of 4 inches (100 mm) and smaller or with a diameter-to-length ratio greater than 2:1, having one or more of the following characteristic-

(1) with a rated linearity of 0.5% or less;

(2) all temperature-compensated or temperature-cor-

rected types:

(0) Servo-motors (gear-head or plain) as follows--

(i) Designed to operate from power sources of more than 300 Hertz except those designed to operate from power sources of over 300 Hertz up to and not exceeding 400 Hertz with a temperature range of from -25°C to +100°C.;

(i) Designed to have a torque-to-inertia ratio of 10,000 radians per second per second or greater;

(i) Incorporating special features to Becure internal damping:

Gv) Employing solid state Hall effect;

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(g) Potentiometers (and special Instruments rated to have the same characteristics as potentiomelets in () and (ii) below, such as Veristals), as follows-

(1) Linear potentiometers having a constant resolution and a rated linearity of 0.1% or less;

(i) Non-liocar potentiometers having a variable resolu tion and a rated conformity of

(1) 1% or less when the resolution is inferior to that obtained with a near potentiometer of the same type and of the same track length; or

(2) 0.5% 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; (i) Designed for gimbal mounting:

(b) Direct current and alternating current torquers, Ee, torque motors specially designed for gyros and stabilized plat- Format

() Electro-optical devices designed to monitor relative rotation

of remote surfaces;

( Synchronous motors, as follows-

til Of size 30 (3 inches (76.2 mm.) in diameter) and smaller and having synchronous speeds in excess of 3,600 revolutions per minute:

(H) Designed to operate from power sources of more Chan 400 Herly;

(ii) Designed to operate below -25°C. Or above +100°C;

(k) Ball-and-disc or cylinder-and-bali mechanical integralers;

and mechanical ball resolvers;

(/) Analogue-to-digital and digital-to-analogue coverters, ILS

follow-

(i) Electrical-impul types possessing-

(1) A peak conversion rate capability in excess of

50,000 complete conversions per second;

(2) An accuracy in exceeds of 1 part in more than

10,000 of full scale; or

(3) A figure of merit of 107 or more (derived from the number of complete conversions per second divided by the accuracy);

(ii) Mechanical input types (including but not limited

the

to shaft-position encoders and linear displacement encoders, but excluding complex servo-follower following-

systems).

(1) Rotary types having an accuracy or maximum incremental accuracy better than 1 part in 10,000 of full scale:

(2) Linear displacement types having ag accuracy

better than 5 microns;

(i) Employing solid state Hall effect;

(m) Semi-conductor Hall Geld probes, as follow-

() Made of Indium-arsenide-phosphide (In As P;