MTS Systems FlexTest IIm Manual page 172

ADDA II Universal
Each encoder requires a Model 493.59 Universal Encoder mezzanine
Encoder Connections
card installed on the Model 493.50 ADDA II module.
Up to sixteen encoders can be connected to the Model 493.80 ADDA II
Encoder Transition module when the Model 493.50 ADDA II module is
fully populated with Universal Encoder cards.
MTS 793 Controller Hardware FlexTest IIm Controller Connections 171
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