The MD-013 is a Microchip standard platform module that provides 1 pps TTL,10 MHz sine wave and 10 MHz square wave outputs that are disciplined to an embedded 72 channel GNSS Receiver (with upgrade options L1 L2 L5 for dual-band multi-GNSS receiver supporting GPS, GLONASS, Galileo, and BeiDou). In addition, an external reference input can override the internal receiver as the reference. Internal to the module is a Microchip digitally corrected OCXO.