| 摘要 |
<p>An instrument for performing analytical assays is taught including one or more of the following features. Claims are directed to an analysis system in which unique codes contained on a cartridge insertable into the analytical cartridge location of the instrument (or a different location in some embodiments) are utilized for customization, for example, to establish the language in which the prompts will be presented to the user or the units of measurement which will be displayed. Other features of the system include an APTT test performed utilizing a bandpass filter centered at approximately 45 Hz in order to provide the best analysis of scattered light for properly detecting the endpoint of the APTT assay; a floating threshold voltage used for comparison with the output signal, thereby avoiding problems which cause false endpoint detection; or periodic determinations made to ensure that an adequate supply of sample is present in the sample well.</p> |
