Lin Engineering released the SilverPak 23CE, an integrated NEMA 23 high torque step motor, microstepping driver, intelligent controller, and optical encoder in one unit. The SilverPak 23CE is available in three body lengths: 3.41", 3.85" and 4.78" and is capable of up to 294 oz-in of holding torque depending on the stack size of the motor. The unit is capable of up to 3 Amps Peak of output current, operates from +12 to 40 VDC, and can reach speeds of 16.7MHz. Some of the fully programmable features include: stand-alone operation with no connection to a PC; fully programmable ramps and speeds; software selectable hold and move currents; up to 256x microstepping resolution settings; and four user configurable digital I/O’s. Commands, which can be issued from the Windows$B%g(B HyperTerminal$B%g(B program, Lab View and Visual Basic, can be preset to execute upon power up. The SilverPak 23CE has an optical encoder being placed inside the main unit. The built-in encoder allows for instant encoder feedback and is available with the following options: tracks up to 100,000 cycles/sec; 32 to 1250 CPR; max pps 5000; two channel quadrature TTL squarewave single ended outputs and optional index (3rd channel).