MTS  MPA-03-172 Servo Amplifier.

-172 indicates it has special features for a Scientific Atlanta, now Viasat application. 

Caution: these special features will not allow its use as a standard MPA-03 for most applications

This model was manufactured by Custom Servo Motors and later by MTS and Parker

It is in good operating condition and I will warranty it for 6 months.

The picture is representative of this model

Here is a link to the manual: http://www.parkermotion.com/new_ulm/manuals_download.htm MPA 03/06/09

Repair services also available for these units.

See my other listings for a variety of Custom Servo Motors, MTS Automation, and Parker products.

Please contact me with any questions regarding suitability to your application, and also for expert troubleshooting assistance on this family of products.