GE Medical Systems Dash 3000, Service Manual, Page: 208 / 232

ASSEMBLY DRAWINGS: Theory Of Operation
9-20 Dash 3000/4000 Patient Monitor Revision B
2000966-105
Calibration Data Calibration factors for NBP and CO
2
are stored in non-volatile memory
on the DAS board.
Calibration factors for the analog output signals are stored in non-
volatile memory on the Processor/Power Management PCB.
Error Log 50 input errors and 50 output errors are retained in static RAM backed
up by a lithium battery soldered onto the processor/power management
PCB. Contents are retained for at least five years, provided that you
exercise caution when you handle the board to prevent inadvertently
discharging the battery (e.g. when you ship the board for problem
diagnosis).