Decade Synchro/Resolver Standards (DSRS)
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Catalog excerpts

Decade Synchro/Resolver Standards (DSRS) - 1

MODEL DSRS and DSRB Decade Synchro/Resolver Standards (DSRS) proportional to the sine of the angle displayed on the dials and the second proportional to the cosine. In the synchro mode, the sine and cosine outputs are interconnected into a Scott-Tee. This transformer arrangement produces the three output voltages of an ideal synchro control transmitter. Most commercially-available components may be tested without affecting the 2-seconds-of-arc accuracy. Low output impedance unbalance permits severe loading without introducing error. For testing components, either the proportional voltage gradient or the proportional voltage nulling method may be used. If the proportional voltage nulling method is used, the TEGAM DSRS may be adjusted to obtain a null instead of the dividing head. In this case, the angular error may be read directly from the setting of the control switches. R A T I O T R A N S F O R M E R S 100° increment switching to simulate operation over a full 360° Selective output No warm-up time Age or environmental conditions have little effect Switches good for 100,000 turns One-year warranty The TEGAM DSRB combines the functions of a decade synchro bridge and a decade resolver bridge into a single unit. A front panel switch changes the unit from one mode of operation to the other. The units are designed for testing control transmitters, differentials (rotors), and torque transmitters as components or for simulating an incremental control transformer in a servo loop. Because of the low output impedance, the bridge is essentially insensitive to pickup and loading errors. The high input impedance allows an actual load to be connected in parallel with the bridge input, providing a test of the component under actual load conditions. As with all TEGAM bridges, operation consists of setting in the desired angle -no warm-up, no pre-use calibration. The unit is essentially a decade resolver bridge. In the synchro mode, the three-wire input is converted to two voltage signals in a Scott-Tee transformer arrangement. After conversion, the voltage comparator operates in the same manner as in the resolver mode. A Rack Mount Adapter is also available for bridges and standards. TEGAM’s Decade Synchro/Resolver Standards combine the functions of a decade synchro standard and a decade resolver standard into a single unit. A front panel switch changes the unit from one mode to another. In system tests, the standard may be used to introduce accurately known inputs for testing auto pilots, aircraft indicators, etc. This technique can also be used to check the response of a servo loop. In component tests, the standard may be used to transmit precise angular data to the test component. As a synchro standard, the unit may be used to test CDX's, CT's, TDX's, TDR's and TR's. As a resolver standard, the unit may be used to test RD's and RC's. The TEGAM DSRS is essentially a decade resolver standard with a Scott-Tee to convert the output to a synchro standard output. As a resolver standard, the DSRS generates two isolated outputs: one

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Decade Synchro/Resolver Standards (DSRS) - 2

TEN TEGAM WAY GENEVA, OHIO 44041 440-466-6100 FX 440-466-6110 www.tegam.com e-mail: sales@tegam.com Specifications subject to change without notice

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