Keysight Technologies VXI bus 75000 C Series Service Manual

Also see for VXI bus 75000 C Series: Configuration and user's guide User manual

Contents

Keysight Technologies VXI bus 75000 C Series Service Manual Manual pdf 22 page image

22 Keysight E1406A Command Module Service GuideVerification Tests Command Module ConfigurationSome Command Module DefinitionsIn this manual, the VXIbus “system” assumed is an external controller connectedto a command module via GPIB, with the command module configured as theresource manager and the slot 0 device. The following paragraphs summarizesome terms associated with the command module. See the C-Size VXIbusSystems Configuration Guide for details.Resource Manager/Slot 0 DeviceEvery VXIbus system must have a device to provide the system’s resourcemanager and slot 0 requirements. The resource manager operates ONLY atpower-on. Once the power-on sequence completes, the resource manager is nolonger used. The resource manager:– identifies all installed plug-in modules– sets commander/servant hierarchies– performs A24/A32 mapping– allocates interrupt lines– starts system operationDuring operation, the slot 0 function is used to:– identify module locations– manage the data flow across backplane buses– provide the (10 MHz) system clock.Logical Address/GPIB AddressFor VXIbus systems, the Logical Address (set with the Logical Address Switch) isused to:– determine device registers base address– set a device as the system resource manager– establish servant areas– create instruments– derive secondary GPIB addressesThe GPIB (IEEE-488) Address is used to address the device and consists of thefollowing three parts:– Interface Select Code (ISC) (typically 7)In VXIbus systems using an external controller, the KeysightE1406A Command Module should be configured as resourcemanager and slot 0 device.