Instrument Description If specified, indicates that this is a description for a module or an option. Instrument(s) ito which the module or option belongs. Modules and options can not be used without the associated instrument. The bus type is specified by specifying a type derivied from the "Bus" abstract type. The schema includes derived types for common instrumentation control buses. Keyword-value pair for identifying power-on defaults. Resources are the physical entities in the instrument that provides the source and measure capabilities. Abstract type for identifying the bus used to communicate with the instrument VXI Bus The amount of dynamic current in amps consumed by the device on each of the VXI backplane voltage lines. The amount of peak current in amps consumed by the device on each of the VXI backplane voltage lines. The number of ECL trigger lines concurrently input or sensed. The number of TTL trigger lines concurrently input or sensed. Identifies the keying class (1-6) defined by the VXI specification. Classes 7, 8, and 9 are defined as follows: Class 7 – No local bus Class 8 – Sensor +/-16V Class 9 – Sensor +/-42V Top Key supports C size modules. Bottom Key supports D size modules (Bottom Key on C size modules is always 7). The module cooling as back pressure in mm/H2O Represents Module Cooling as air flow in liters/sec. Identifies the type of VXI address space needed by the instrument or module in addition to A16. The number of interrupt lines utilized by a device. The weight of the module in kilograms per slot occupied. The number of slots consumed. This type is used to store the amount of current in amps consumed by the device for each of the VXI backplane voltages. Used to specify the number of triggers concurrently input or sensed. IEEE-488 bus VME Bus Ethernet RS-232 USB Used to identify the version of USB supported. IEEE--1394 LXI PCI PCI Express PXI PXI Express Conditions under which the specifications are measured. These conditions apply to all specifications. Each individual specification can add additional conditions, or override/replace the any of these conditions. Specifies traceability information for all specs A grouping of specifications that share a set of conditions. Conditions under which the grouped specifications are measured. Each individual specification can add additional conditions, or override/replace any of these conditions. A short (one or two sentence) textual description of the specification A rigorous (mathematical) description of how the specification is defined and measured Conditions under which this specification is measured. The limits for the specification. Supplies graphical data for specifications that vary with other parameters. Some specs are only available in graphical format. Supplying a bitmap of the graph is one way to satisfy this requirement; the other is to ask the vendor to include all the data, but that would lose important annotations from the graph itself. Any additional information that is necessary to clarify the specification. This includes information that is contained in footnotes of the datasheet Instrument options that are required for this spec to be valid Instrument options that make this spec invalid Guaranteed: If the instrument does not meet this spec, it is considered broken and will be repaired under warranty Typical: Most instruments would be expected to meet this spec, but it is not guaranteed States the expected percentage of instruments that will meet the spec Nominal: Characteristics that are true by design, but not measured or tested. Characteristic: A ball-park figure that describes the type of performance that may be expected, but not verified with rigorous statistical analysis or measurements Feature: A description of a feature, which is not actually an instrument spec but is the sort of thing that is often included in the spec sheet