| GpsStatusMask | Macrodyne GPS status mask (from Status 2 byte, bits 3-4). |
| GpsSynchronizationBit | GPS synchronization bit (from Status 2 byte, bits 7): set = last time mark was true / tracking, not set = last time mark was false / not tracking. |
| MaximumAnalogValues | Absolute maximum number of possible analog values that could fit into a data frame. |
| MaximumDataLength | Absolute maximum data length (in bytes) that could fit into any frame. |
| MaximumDigitalValues | Absolute maximum number of possible digital values that could fit into a data frame. |
| MaximumExtendedDataLength | Absolute maximum number of bytes of extended data that could fit into a command frame. |
| MaximumPhasorValues | Absolute maximum number of possible phasor values that could fit into a data frame. |
| ReferenceInputPortBit | Reference input port bit (from Status 2 byte, bits 5): set = port 3, not set = port 4. |
| ReferenceOutputPortBit | Reference output port bit (from Status 2 byte, bits 6): set = port 2, not set = port 1. |
| TriggerReasonMask | Macrodyne trigger reason mask (from Status 2 byte, bits 0-2). |