The CCSDS / ECSS Telemetry and Telecommand EGSE (Electrical Ground Support Equipment) provides the necessary means for communicating with the on-board space segment. It has been designed to support satellite integration and test activities, on-board space segment development, ground segment applications, etc.
The EGSE communicates directly with the on-board telemetry encoder and telecommand decoder devices, TM/TC boards and units, bypassing the transponder. The EGSE is ideally suited for the verification of FPGA designs and validation of ASIC devices, as well as during integration of complete TM/TC boards or communication subsystems.
The TM/TC EGSE hardware establishes the link between the on-board flight segment and the ground segment software. The EGSE features standardized RS422 interfaces supporting up to 10 MBPS transfers on the downlink and up to 1 MBPS on the uplink. The EGSE hardware communicates with the ground segment software through a 10/100/1000 Mbit/s Ethernet interfaces via TCP/IP.
Telecommand transmitter capabilities:
Telemetry receiver capabilities:
The EGSE hardware can efficiently communicate with the library of CCSDS/ECSS routines described below.
CCSDS/ECSS Software Library
The TM/TC EGSE hardware is delivered with the CCSDS/ECSS library, which provides basic routines for generating uplink commands and checking downlink data. It is delivered in source code, together with example applications operating on ASCII files. The library currently does not include support for the SpaceWire, CAN interface, and PacketWire interfaces.
CCSDS/ ECSS library capabilities: