Giga-Transceiver
Input/Output Cards

The GTDI provides optically isolated digital input to the real time simulation from external equipment. The card has a total of 64 inputs for use in regular or small timestep (1-2 µs) simulations running on the GPC card.

The GTDI input is current driven (~10 mA), allowing a wide range of input voltages to be connected to the card by providing the appropriate value of current limiting resistor.

The GTDI is normally mounted on a DIN rail in the rear of the RTDS Simulator cubicle. Optionally a longer optical cable can be provided to allow the card to be located remotely (e.g. in a control system cubicle). If being used in a small timestep simulation, the GTDI card should be first in the daisy chain.

After line commutated valve groups are available on the GPC, the GTDI can also be used to provide timestamp/DITS functionality.

The GTDO provides optically isolated digital output from the simulation to external equipment. The card has a total of 64 outputs which can be sent from either a regular or small timestep simulation running on the GPC card.

The GTDO has a source driven output that can provide up to 100 mA with a voltage supply range from +7 to +24 V.

Like the GTDI, the GTDO is normally located on a DIN rail in the rear of the cubicle, but can also be located remotely.

The GTAO provides optically isolated analogue output from the simulation to external equipment. The card has a total of 12 outputs which can be sent from either regular or small timestep simulations running on the GPC.

Special care has been taken in the design of the GTAO to provide the communication bandwidth required for small timestep applications.

The GTAO output can range between a maximum of ± 10 Vpeak. When operating with a regular timestep simulation, the GTAO card can provide oversampling of the output at 1.0 µs intervals.

Like the GTDI and GTDO, GTAO is normally located on a DIN rail in the rear of the cubicle, but can also be located remotely.

GTAI - Giga-Transceiver Analogue Input Card

The GTAI provides optically isolated analogue input from external equipment to the simulation. The card has a total of 12 true differential inputs which can be read by simulation components running on the GPC. The GTAI can provide updates to the GPC card at a minimum of 6 µs intervals. The GTAI input can range between a maximum of ± 10 Vpeak. Like the other GT-I/O cards, the GTAI is normally located on a DIN rail in the rear of the cubicle, but can also be located remotely.