Keysight Technologies M9037A User Manual

Also see for M9037A: Startup guide Update guide

Contents

Keysight M9037A PXIe Embedded Controller User Guide 29Chassis Power Inhibit Functionality Using the ControllerChassis Power Inhibit FunctionalityOn some PXIe chassis, the controller may go into a state where the blue StatusLED on the front panel is constantly lit but the controller never boots.- For a Keysight 18-Slot PXIe chassis, this may happen when the rear panelInhibited switch is set to “MAN.” If the controller is stuck in this state, toggling(pulse low for a minimum of 500 ms) the Inhibit pin (pin 5) on the DB-9connector causes the system to reboot. Alternately, change the Inhibit switchto the Default position and then power-on or reboot the chassis.- For other chassis, refer to the manufacturer’s chassis documentation.M9018 PXIe Chassis PCIe Link ConfigurationThis discussion is applicable when using the M9037A in slot 1 of an M9018A orM9018B PXIe Chassis. It does not apply for use with the M9019A or M9010APXIe chassis, because they have a fixed configuration of 1x8 and 1x16 for theirPCIe Link fabric.PCIe link configuration refers to how the PXIe chassis PCIe Switch Fabric isconfigured to connect PCI Express signals between slot 1, the system controllerslot, and the other chassis slots. For a review of the supported PCIe linkconfigurations, please refer to the PXIe Chassis Family User Guide (availablefrom the Windows Start button, then look under Keysight).For a detailed graphics, explaining the operation of the chassis PCIe data paths,see the Keysight PXIe Chassis Interactive Block Diagram atwww.keysight.com/find/pxi-blockdiagram.Keysight’s M9037A embedded controller can boot and run with all of the PCIeswitch fabric configurations supported by the M9018 chassis. The supportedswitch fabric configurations are:- 1x8 Configuration — Referred to as 1x8, this configuration provides one x8 linkfrom the M9037A embedded controller to the PCIe switch fabric. This link isrouted by the PCIe switch fabric to all slots (2 through 18) of the M9018chassis. While the 1x8 configuration will work with the M9037A, it is bettersuited for use with the M9021A system module which supports 8 PCIe lanes.- 2x8 Configuration - Referred to as 2x8, this configuration provides two x8 linksfrom the M9037A embedded controller to the PCIe switch fabric. Link 1 isrouted by the PCIe switch fabric to slots 2 through 9, while Link 2 is routed toslots 10 through18. The two x8 links provide the highest performance I/O tothe 18 chassis slots; therefore, the 2x8 configuration is recommended for usewith the M9037A.