The GX1034 is a 3U PXI board that offers PXI system designers the capability to develop a system re-certification strategy, employing only internal system resources. By incorporating the GX1034 as part of a system configuration, it is possible to develop a system accuracy verification strategy that can recertify a system's source and measure base band instrumentation – resulting in simplified support and maintenance logistics and improved system availability.
The GX1034's standards exhibit excellent long-term stability with absolute accuracy achieved by employing an on-board EEROM, which contains NIST traceable calibration values for source and resistor standards. The module also includes source and measure resources which can be used to support system self-test functions including continuity verification and verification of instrument functionality. The GX1034’s standards accuracy is derived by measuring the module’s standards values at the time of manufacture and subsequently saving those values into the module’s EEROM, which can then be accessed by the user when re-certifying the test system’s instrumentation.
The GX1034 provides a positive DC voltage source reference, a negative DC voltage source reference, an AC voltage source reference, eight 2-wire low drift resistor references, three 4-wire low drift resistor references and a precision 10 MHz frequency reference. The board also has an on-board programmable current source and a 16-bit ADC for voltage measurements.
An on-board temperature sensor is used to record the temperature of the module at the time of calibration time. This value is saved in the on-board non-volatile memory. The GXCAL driver uses the recorded temperature to correct for temperature variations that affect the module’s on-board standards. The card also includes built-in-test functionality using its own internal source / measure functions. An external loop back connector available from Marvin Test Solutions is required to fully support the BIT functionality.