The GX5641 is a 3U PXI instrument card that consists of 64 Bi-Directional TTL-Differential I/O channels. Each channel has two ports: TTL and Differential. Each channel can be individually set to operate in one of two modes: Conversion or Static I/O. In Static I/O mode the GX5641 supports 128 individual digital inputs or outputs, 64 TTL and 64 Differential. In Conversion mode the GX5641 support 64 individual Differential channels. The GX5641 can be configured via jumper to operate in one of two modes: Independent or Software Controlled.
When the card is configured to Independent mode the PXI interface is disabled and all 64 channels operate in Conversion mode. In this mode each channel conversion operation is predefined using DIP-Switches. Each channel can be predefined to convert TTL to Differential or Differential to TTL. The channels conversion settings will be loaded automatically upon power up.
When the card is configured to Software Controlled mode each channel can be individually programmed to operate in Conversion mode or Static I/O mode. In Conversion mode each channel can be programmed to convert TTL to Differential or Differential RS422 to TTL. In Static I/O mode, each channel’s port can be programmed as follows:
TTL port input, Differential port input.
TTL port output, Differential port input.
TTL port input, Differential port output.
TTL port output, Differential port output.
In Software Controlled mode each channel’s TTL and Differential outputs can be individually enabled or disabled.
There are three different versions of this module, the GX5641, the GX5641-3, and the GX5641-XC. Unless otherwise specified, reference to the GX5641 applies to all three versions of the module.