(This functionality is available with the Input / Output module)
The default communications settings are designed to work effectively if the GRE4N or GRE4A data recorders and the GIF2 are set up as follows.
| SET MODE | DISPLAY | SETTING |
| 70 | BAUD (Baud Rate 2400) | 2400 |
| 71 | SPAR (Parity - even) | 2 |
| 72 | SPTC (Protocol - yes) | 1 |
| 73 | LF ? (End of line characters-CR/LF) | 1 |
| 74 | SPRT (ACK/NAK CR/LF) | 3 |
| 75 | STPB | 2 |
The internal switch settings for the GIF2 must conform to the following:
| Switch 1 | ON |
| Switch 2 | ON |
| Switch 3 | ON |
The cable connecting the serial port of the computer to the GIF2 must conform to one of the following:
| GIF2 25 pin plug (DP25S) | Computer 25 pin plug (DP25S) |
| 2 | 2 |
| 3 | 3 |
| 7 | 7 |
| GIF2 25 pin plug (DP25S) | Computer 9 pin plug (DP9S) |
| 2 | 3 |
| 3 | 2 |
| 7 | 5 |