User's Manual

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13 GPS data input Data input for initial setting of GPS module.
It follows NMEA 0183 format and uses
asynchronous data format.
TTL level I/P
14 DGPS data input Data input for DGPS Correction of GPS
module. It follows NMEA 0183 format and
uses asynchronous data format.
TTL level I/P
15 GPS data output Position data output from the GPS module. It
follows NMEA 0183 format and uses
asynchronous data format.
TTL level O/P
When building a cable to interface with the SD-170E, the ground connection is made by grounding the outer shell of the
DB-15 connector. Make sure the securing screws are tight on the connector when installing it to the unit