Synchro / Resolver Measurement (S/D)

Synchro / Resolver Measurement (S/D)


See SD-X for newest architecture.

Synchros and Resolvers are transformer-type voltage/current transducers that convert a shaft or other rotating device's angular position and/or velocity to a multi-wire AC electrical signal. Both deliver signals proportional to the Sine and/or Cosine of the shaft angle. A Resolver-to-Digital or a Synchro-to-Digital converter is used to convert these signals to a digital output corresponding to the shaft angle and/or velocity.

NAI offers multichannel programmable, isolated output, synchro and/or resolver measurement Synchro/Resolver–to-Digital function modules, for all the multifunction intelligent I/O cards and platforms. Covering the range of excitation voltages/ frequency and field parameter programmability, the function modules are able to interface to virtually any type synchro or resolver. All Synchro/Resolver–to-Digital function modules feature background wrap-around self-test capability and most platforms support an optional programmable AC excitation supply. Utilizing state-of-the-art technologies and Type II servo loop processing techniques and specialized design algorithms, many useful application features such as excitation voltage and frequency measurement, excitation loss detection and many others are “built-in.” Operating voltages between 2-90 VL-L and reference voltage/frequency between 2-115 VRMS / 47 Hz - 20 kHz can be specified (see part number). Individual excitation inputs are supplied for each channel input.


Click below for manuals and specifications:

S*S/D (Module S*) - Four Synchro/Resolver Measurement ChannelsN/AContact Factory at 1 (631) 567-1100

Function module(s) featured in products below:

ModelBoard TypeFunction Module SlotsBoard ArchitectureSizeOn Board ReferenceEthernetOtherMaster / Slave
76C2PCI3 1/2N/A    
64C3VME6BF533 / Cyclone® III Y2 x Gb Both 
64C2VME 6BF533 / Cyclone® II Y1 x Gb Slave 
64CS4VME5BF533 / Cyclone® II Y1 x GbHigh power D/S capableSlave 
76CS3PCI5 FullY High power D/S capable  
79C3PCIe3 1/2N/A    
75C33U cPCI2 + 1/2S/B Cyclone® II  1 x Gb Slave 
75C53U cPCI2 + 1/2BF533 / Cyclone® III  1 x Gb Both 
78C26U cPCI6BF533 / Cyclone® II Y1 x GbHigh power D/S capableSlave 
78CS26U cPCI5BF533 / Cyclone® II Y1 x Gb Slave 
67C36U OpenVPX6BF533 / Cyclone® III Y2 x Gb Both 
68C33U OpenVPX2 + 1/2BF533 / Cyclone® IV  2 x Gb Both 
ModelPhotoBoard TypeDimensions w/Connectors (w x h x d)Volume w/Connectors (in3)Weight / lbs (fully populated)Est. Typ. Power Dissipation (W)# of Board SlotsFunction Module SlotsMax I/O PinsEthernet
SIU66U11.75" x 3.35" x 8.65"340.49<14.012 to 60 W2123162 x Gb
ModelForm FactorMax ChannelsFunctionOn Board ReferenceOther
73SD4PC1046Synchro / Resolver MeasurementY optionConvection Cooled
ModelFunctionForm FactorVoltage RangeFront Panel TypeFrequency RangeInternal ReferenceExcitation / Reference SupplyResolutionNumber of ChannelsAccuracyOtherSignal Voltage RangeReference Voltage RangeInterfaces
65CS4 Synchro/Resolver Measurement and Stimulus 1.0 to 90 VL-L 47 Hz to 4,000 Hz For 47Hz to 10kHz or 20kHz 2 to 115 Vrms 4 Measurement Channels 4 Stimulus Channels 5410C-89 Replacement   
Legacy API Manuals          Models 800, 801, 8300, 8500, 8800 & 8810   
5388S/D & D/S 2 to 115 VAC 47 Hz to 10 kHz None 2