| 1 | 1PPS | O | Signal from internal GNSS monitor that becomes active when the monitor is locked. | 5 V level - max 25 mA |
| 2 | DIGO 1 | O | Digital Output for User. | 5 V level - max 25 mA |
| 3 | DIGI 1 | I | Digital Input for User. | Up to 12 V input level.
Detection threshold=2.5 V |
| 4 | - | - | - | - |
| 5 | - | - | - | - |
| 6 | DIGO 2 | O | Digital Output for User. | 5 V level - max 25 mA |
| 7 | - | - | - | - |
| 8 | DIGI 2 | I | Digital Input for User. | Up to 12 V input level.
Detection threshold=2.5 V |
| 9 | - | - | - | - |
| 10 | CAN 1 H | I/O | CAN bus - High - Channel 1 . | Standard ISO11898 voltage signal levels for CAN |
| 11 | CAN 1 L | I/O | CAN bus - Low - Channel 1. | Standard ISO11898 voltage signal levels for CAN |
| 12 | CAN 2 H | I/O | CAN bus - High - Channel 2. | Standard ISO11898 voltage signal levels for CAN |
| 13 | CAN 2 L | I/O | CAN bus - Low - Channel 2. | Standard ISO11898 voltage signal levels for CAN |
| 14 | I2C SDA | I/O | I2C bus data - Reserved for future use. | - |
| 15 | I2C SCL | I/O | I2C bus data - Reserved for future use. | - |
| 16 | I2C VCC | I/O | I2C bus data - Reserved for future use. | - |
| 17 | RS232 Tx | O | RS232 data output. NMEA data from GNSS monitor or user-specified RS232 data if enabled. | Standard RS232 level. |
| 18 | RS232 Rx | I | User-specified RS232 data that is recorded if RS232 is enabled in the Digital configuration menu. | Standard RS232 level. |
| 19 | Ground | O | Ground connection. | - |
| 20 | Ground | O | Ground connection. | - |
| 21 | Ground | O | Ground connection. | - |
| 22 | | - | | |
| 23 | | - | | |
| 24 | | - | | |
| 25 | | - | | |
| 26 | | - | | |
| 27 | | - | | |
| 28 | IO_0 | I/O | Reserved. | |
| 29 | IO_1 | I/O | Reserved. | |
| 30 | IO_2 | I/O | Reserved. | |
| 31 | IO_3 | I/O | Reserved. | |
| 32 | | - | | |
| 33 | Ground | O | Ground connection. | |
| 34 | Ground | O | Ground connection. | |
| 35 | Power | O | Connected to input power. | Max 250 mA. |
| 36 | Power | O | Connected to input power. | Max 250 mA. |
