Best for NEMA 23 and 34 step motors? Tracks from 0 to 100,000 cycles/sec? 64 to 2,500 cycles per revolution (CPR)? 256 to 10,000 pulses per revolution (PPR)? 2 channel quadrature TTL squarewave outputs? Optional index (3rd channel)? -40 to 100 oC operating temperature? 2 year warranty? Through shaft hole option available