1 – Introduction
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1.3.9 USB Ports
Three standard USB ports are located on the rear of the instrument. One free USB port is located on
the tablet’s right side (the port on the left side connects to the BD BACTEC™ FX40 instrument). USB
ports are used primarily to connect peripheral devices such as a barcode scanner and printer, and to
save files to and update system software from flash media.
1.3.10 Audible Alarm
An audible alarm provides notification of system alerts and positive vials. Loudness settings for
positive vials are set in the configuration display and are indicated by numbers from 1 (softest) to 10
(loudest). A jack on the rear of the instrument enables connection of an optional remote alarm unit.
1.3.11 Barcode Scanner
A peripheral barcode scanner is designed to allow vial barcode scanning for vial entry, identification,
and removal operations. The barcode scanner is used to scan vial sequence and user-provided
accession barcodes. One scanner can serve up to four BD BACTEC™ FX40 instruments in a cluster.
NOTE
Accepted barcode symbologies include Code 128, Codabar,
Code 39, and Interleaved 2 of 5.
1.3.12 Software and Operation Overview
The tablet presents all the information needed to monitor instrument and station status, to enter and
remove vials, set up the instrument, print reports, and perform routine instrument maintenance. The
information is presented in the form of icons that graphically represent the information (such as a clock
to indicate the current time), text buttons, or a combination of icons and text.
Operations you perform at the in
strument can be initiated by opening the door and scanning a vial in a
vial activated workflow or can be initiated by tapping buttons, tabs, and fields on the tablet display in a
screen activated workflow. Routine operations, such as entering vials and removing positive vials, are
initiated from the Status display. A Reports tab provides access to the built-in BD BACTEC™ FX40
reports, while Maintenance and Configuration tabs provide access to these functions.
Positivity analysis (Algorithm subsystem)
Algorithms determine vial positivity (i.e., the detectio
n of microbial growth). Multiple algorithms are
used to test for vial positivity. Some algorithms are medium-specific for greater sensitivity.
If a sequenced vial has not triggered a positivity a
lgorithm by the end of the defined protocol
length, and there are no instrument error conditions that would prevent accurate detection of
positives, the vial is declared a negative vial, however, positivity algorithms continue to be applied
until the vial is removed from the instrument.
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