Connect the Input and Output Signals

All of the communication connections to the MIC and the OEM719 receiver are available on the communications connector (P601) on the MIC. These connections include:

• MIC serial port

• OEM719 serial port (COM2)

• USB port

• Event1 trigger input

• Event2 trigger input

• 1 PPS (Pulse Per Second) output

• VARF (Variable Frequency) output

• Reset input

• Position Valid output

See MIC Connectors for the pinouts of the communications connector.

All signal I/O with the exception of the USB port are at LVCMOS levels. To connect the MIC to devices that use other signals levels, such as a computer with an RS-232 serial port, an interface circuit that converts LVCMOS to the other signal level must be used.

Use a twisted pair for the USB port connection and keep the wires as short as possible.