SECTION THREE - Interfacing961 INSTALLATION MANUAL Revision A Page 55Aux port format Outputting DGPS corrections to another sourceSC-104 OUT outputs differential corrections from your 961XD’s internaldifferential receiver to an external device that accepts the standardSC-104 data stream. When using the SC-104 OUT setting, be sure that theBAUD setting also matches the baud rate requirements of the receivingdevice.DiagnosticsThe aux port’s DIAG option is for factory diagnosis of 961 operatingparameters. Do not turn this function on.Port offUse the OFF setting when the aux port’s input or output functions aren’tneeded.Aux port baudrateThe aux port’s baud rate must match the external device’s baud rate; referto the external device’s instructions for the correct baud rate setting, thenfollow the instructions on the previous page for changing an aux port set-ting.Setting PPNM To access the pulses per nautical minute (PPNM) options:1. Press the STAR key to access the SERVICE MENU screen.2. Press the PORT SETUP key, then press the PPNM key.3. The 961 displays the PPNM OUTPUT SETUP screen with options fornumber of pulses, pulse-time minimum, and pulse-separation mini-mum.Figure 28: PPNM output setup screen