Test Connections - March 2016

GX7017 GENASYS Subsystem - PXI-Based, High Performance, High Density Switching Architecture

The GENASYS GX7017 subsystem employs the same innovative switching architecture associated with the high pin count, GX7016 subsystem. The GX7017 supports the integration of both a high performance, PXI digital and switching subsystem, providing a complete, mixed-signal test solution within a single, compact PXI chassis.

Key features associated with the GX7017 include:
  • Support for up (9) GENASYS switching modules, offering over 2200 multiplexed, hybrid test connections
  • Support for up to (8) GX5960 digital modules, supporting up to 256 performance digital channels which can be routed via the GENASYS switch modules
  • Integrated Scout receiver providing a reliable, cable-less interface
  • Integrated, high-level switching software - SwitchEasy, providing end to end signal routing

The figure below details that GX7017 and its slot configuration / capabilities.  Note that any of the peripheral slots can accept 3U or 6U PXI modules, providing additional flexibility when configuring the overall system.

GX7017 GENASYS Chassis Configuration

GX7017 GENASYS Chassis Configuration


GX7017 Chassis with MacPanel Scout Receiver & GENASYS Switch Card

GX7017 Chassis with MacPanel Scout Receiver & GENASYS Switch Card


The GX7017 can be configured with any of the GENASYS switch modules, providing analog / digital switching capability for both baseband and RF applications.

GENASYS modules currently available include:
  • GX6256 – 256 x 16 x 16 mux/matrix card; supports 16 digital and 16 internal analog bus signal resources
  • GX6192 – 100 MHz, 192 x 16 x 16 mux / matrix card; supports 16 external and 16 internal analog bus resources
  • GX6864 – 500 MHz, 64 x 16 x 16 mux / matrix card; supports 16 external and 16 internal analog bus resources

Analog signal routing from card to card is supported by an internal 16 wire bus which can also be used for routing analog instrumentation and triggers from an instrument source to the receiver interface. The implementation of this bus is not the typical “tapped bus” configuration which can seriously limit signal bandwidth due to stubbing effects. Instead, a fabric switch topology is employed, providing a controlled, high bandwidth point to point connection for each of the 16 bus wires, regardless of the number of cards installed in the system or the routing of the signal. The figure below details the how this switch router module, which is located on the GENASYS backplane is implemented. Note that for any signal path connection; no more than 6 relays are needed to connect to any of the 9 GENASYS switch cards installed in the GX7017 chassis.

Analog Bus Switch Router

Analog Bus Switch Router, (1 of 16)


The GENASYS switch cards also support signal routing for the digital I/O cards, which provides a high bandwidth signal path as well as hybrid pin capability to each receiver pin, providing “any signal to any pin” signal routing. Additionally, for higher bandwidth applications, the GENASYS architecture offers an HF Matrix / Mux module which supports the routing of signals with bandwidths > 100 MHz. The figure below provides a simplified diagram of the GENASYS switching architecture. Note that up to 32 analog / trigger resources are supported in the base GENASYS configuration via the 32x16 matrix switch module.

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All GENASYS systems are delivered with SwitchEasy signal routing software, which provides end to end signal routing and can be easily integrated with ATEasy and other test executive environments. The task of managing GENASYS’ complex signal routing architecture is efficiently performed by SwitchEasy which also prevents erroneous connections or dangerous connections that could damage the system.

Click here to learn more about the GENASYS switching subsystem.
Click here to read the white paper about the GENASYS architecture.