Piedinature - Pinouts
GPS to PC or MAC

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Reference and Sources:

This will outline the basics for connecting most GPS receivers to a PC or MAC serial connector for data transfer.
Since the GPS needs to both send and receive from your PC or MAC, the data connection will consist in three wires:

  • Transmit Data (TxD)
  • Receive Data (RxD)
  • Signal Ground (SG) - (is common for both power and data grounding)
For GPS connector pinouts refer to documentation on Pinouts->Connector section of this site.

PC 9 PIN D-SUB FEMALE
PC 9 PIN D-SUB FEMALE (on cable)

PC 25 PIN D-SUB FEMALE
PC 25 PIN D-SUB FEMALE (on cable)

MAC MINI-DIN 8 MALE
MAC MINI-DIN 8 MALE (on cable)

GPS Signal namePC or MAC signal name PC DB9 PC DB25 MAC MINI-DIN 8
Data OUT (TxD)Receive Data (RxD)235
DATA IN (RxD)Transmit Data (TxD)323
Signal Ground (SG)Ground574



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