THEORY
20
Art: 714382-00D
Rev. Date: 02/20/06
20-1
ANALYZER FUNCTIONS
Introduction
The i-STAT 1 analyzer is a microprocessor-controlled electromechanical
instrument designed to:
• identify the cartridge type.
• control the flow of fluids within the cartridges.
• mix sample and reagent (where applicable).
• apply electrical signals to certain types of sensors within the
cartridges.
• control the temperature of the cartridge at 37°C (where applicable).
• measure electrical signals generated by the sensors (cartridge and test
strip).
• measure the barometric pressure of the surrounding environment
(where applicable).
• calculate concentrations of analytes using the generated electrical
signals.
• display the results in numerical values and on bar graphs (where
applicable).
• communicate the results to a printer and computer.
• sense and communicate operational errors.
• maintain an internal clock/calendar.
• store all test records, Electronic Simulator results and Quality Check
Codes and messages.
Microprocessor
System
The microprocessor control system manages all functions of the analyzer. It
accesses three types of memory storage devices. A “FLASH” EEPROM module
stores the software program in the analyzer. The RAM, which is backed up
by an internal lithium battery, is used for temporary storage of sensor signals
measured during operation and for storage of test records. Another EEPROM
stores factory calibration information, the instrument serial number and
cumulative count of uses. Neither of the EEPROMs relies on the lithium
battery for maintaining information.
Sensor Interface
Electrical signals from the cartridge sensors are conducted from the contact
pads on the cartridge, through the internal connector in the analyzer, to the
sensor interface circuit board. Electrical signals from the test strip sensor are
conducted from the contact bars to a sensor interface circuit board. These
circuits amplify the signals from the sensors so that they can be further
processed by the main electronic circuit board. Four signals are relayed to the
main electronic circuit board from the cartridge sensor interface circuit board:
Summary of Contents for i-STAT 1
Page 1: ...i STAT 1 System Manual Rev Date 20 Jan 12 Art 714336 00L ...
Page 18: ...1 8 Art 714363 00U Rev Date 02 Aug 12 ...
Page 44: ......
Page 90: ......
Page 106: ...9 12 Art 714371 00E Rev Date 06 Aug 12 ...
Page 162: ......
Page 166: ...Art 730292 00A Rev Date 20 Feb 12 4 ...
Page 176: ...10 10 Art 714372 00L Rev Date 30 Jul 12 ...
Page 182: ...11 6 Art 714373 00F Rev Date 17 Jan 11 ...
Page 184: ...12 2 Art 714374 00J Rev Date 25 Aug 11 ...
Page 185: ...Art 714374 00J Rev Date 25 Aug 11 12 3 ...
Page 186: ...12 4 Art 714374 00J Rev Date 25 Aug 11 ...
Page 187: ...Art 714374 00J Rev Date 25 Aug 11 12 5 ...
Page 192: ......
Page 194: ......
Page 214: ...14 20 Art 714376 00M Rev Date 31 Jan 12 ...
Page 216: ...14 22 Art 714376 00M Rev Date 31 Jan 12 ...
Page 218: ...14 24 Art 714376 00M Rev Date 31 Jan 12 ...
Page 220: ...14 26 Art 714376 00M Rev Date 31 Jan 12 ...
Page 222: ...14 28 Art 714376 00M Rev Date 31 Jan 12 ...
Page 224: ...14 30 Art 714376 00M Rev Date 31 Jan 12 ...
Page 226: ......
Page 236: ......
Page 252: ...17 4 Art 714379 00F Rev Date 18 Jul 12 ...
Page 254: ......
Page 294: ...Art 725768 00E Rev Date 04 Jan 12 20 ...
Page 336: ...22 2 Art 714384 00D Rev Date 07 18 06 ...
Page 342: ...22 8 Art 714384 00D Rev Date 07 18 06 ...
Page 348: ...22 14 Art 714384 00D Rev Date 07 18 06 ...
Page 352: ...22 18 Art 714384 00D Rev Date 07 18 06 ...
Page 364: ...22 30 Art 714384 00D Rev Date 07 18 06 ...
Page 384: ...22 50 Art 714384 00D Rev Date 07 18 06 ...
Page 404: ...22 70 Art 714384 00D Rev Date 07 18 06 ...
Page 488: ...Kaolin ACT 4 Art 715878 00M Rev Date 31 Jan 12 ...
Page 536: ......
Page 556: ...Art 714261 00E Rev Date 10 Jan 11 8 ...
Page 560: ...Art 716240 00D Rev Date 03 Mar 10 4 ...
Page 572: ...Art 715617 00D Rev Date 06 11 08 ...
Page 578: ...Art 714547 00F Rev Date 06 11 08 ...
Page 590: ...Art 720735 00B Rev Date 06 11 08 ...
Page 592: ...Art 721106 00B Rev Date 06 11 08 ...
Page 598: ...Art 722831 00A Rev Date 19 Feb 09 ...
Page 610: ...Art 720654 00B Rev Date 06 11 08 ...
Page 614: ...Art 721317 00D Rev Date 13 Aug 12 4 ...
Page 616: ...Art 725703 00A Rev Date 08 Mar 10 2 ...
Page 618: ...Art 721296 00A Rev Date 07 16 08 ...
Page 620: ...REV DATE 16 Oct 12 ART 714446 00L ...
Page 627: ...PROCEDURE MANUAL FOR THE i STAT SYSTEM 6 REV DATE 16 Oct 12 ART 714446 00L ...
Page 628: ...PROCEDURE MANUAL FOR THE i STAT SYSTEM 7 REV DATE 16 Oct 12 ART 714446 00L ...
Page 629: ...PROCEDURE MANUAL FOR THE i STAT SYSTEM 8 REV DATE 16 Oct 12 ART 714446 00L ...
Page 630: ...PROCEDURE MANUAL FOR THE i STAT SYSTEM 9 REV DATE 16 Oct 12 ART 714446 00L ...
Page 658: ......