4 Packet Format

Packets are retrieved by ndigo6g12_read(). They are of type crono_packet.

• Each hit on an ADC channel is stored in one packet. Two consecutive packets on the same ADC channel must have a minimum distance of eight ADC samples. The format of the payload data (see crono_packet::data) is explained in Section 4.4.

• All TDC hits within the time given by ndigo6g12_param_info::tdc_rollover_period are stored in a single packet (stored in the payload data). The memory layout thereof is shown in Section 4.5.

Contents of this Chapter

• 4.1 Constants
• 4.2 Output Structure crono_packet
• 4.3 Utility macros
• 4.4 Data encoding for ADC hits
• 4.5 Data encoding for TDC hits