KAD/HBM/102
HSDB bus monitor
Description
The KAD/HBM/102 receives Ethernet (10BaseT) traffic then parses and distributes it to other Acra KAM-500 modules. The KAD/HBM/102 monitors traffic only on the receive signal pair. A second port can forward a mirror copy of all frames received on the primary port, for transmission on the FTI network or to a packet recorder.
The KAD/HBM/102 can be configured to respond to specific ping and acknowledgement requests but otherwise does not transmit via Ethernet.
The KAD/HBM/102 parses messages within HSDB packets. It filters packets based first on the 4-bit Pipe ID and then on the 2-byte IOP (Input/Output Processing) HSDB Packet ID field. The entire IOP HSDB packet is triple buffered and tagged with a time stamp, packet size and message count. Parameters within the IOP packet can be read individually across the chassis backplane for transmission from other Acra KAM-500 modules.
The KAD/HBM/102 does not handle fragmented HSDB packets.
Features
- Full-duplex 10BaseT, IEEE 802.3 standard compatible Ethernet interface
- Monitors a single Garmin™ G1000 High Speed Data Bus (HSDB) network link
- Selectable support for embedded and PC interface protocol stacks
- Parses (triple buffers) and classifies messages within the HSDB packet payload
- Identifies 1,023 unique messages plus one catchall
- All messages are counted and the count is stored as a tag with each identified message
- Time tags messages to one microsecond resolution
Applications
- Monitoring of messages transmitted over a Garmin G1000 HSDB link
Inputs and outputs of the HSDB PARSER module