The Model 540/10 Synchro/Resolver Bridge provides the user with the ability to measure the electrical shaft position of either 3-wire Synchros or 4-wire Resolvers to an accuracy of 3 arc-seconds. Its unique bridge circuit design provides a constant null voltage gradient over the entire angular range. When the model 540/10 input is connected to the standard line to line levels of 11.8, 26, 90, 115 Vrms, it provides a null output in either the Synchro or the Resolver mode. This instrument is designed to provide 3 arc-seconds of accuracy at the operating frequency of 400Hz and may be used with reduced accuracy up to 5 kHz (see specification section). Accuracy is maintained for all angles over the range of 0° to 359.9999° with a resolution of 0.0001º. The 540/10 is designed for use with the North Atlantic model 2250 and 2251, DAVM’s.