Teledyne TED-200 - Medical application oxygen monitor - Manual (Page 9)

Introduction 1
1-3 Teledyne Analytical Instruments
CAUTION: Remove and save the diverter when the sensor is used in
confined volume applications.
1.2.2 Signal Processing
The electrical current developed in the sensor is sent to the microprocessor for
processing. Processing includes amplification, conversion to digits, and comparison
to alarm standards. Using a microprocessor allows for easier setting of alarms, auto-
matic calibration, and self-diagnosis. When the battery runs low or the unit needs
recalibration, the TED 200-T tells you so.
The oxygen level is calculated and then displayed on the liquid crystal display
(LCD) on the front panel.
User-programmed high and low alarm setpoints are stored in random access
memory (RAM) which resides within the microprocessor. The oxygen level calculated
by the microprocessor is compared to these setpoints , and an alarm activated, if
necessary.
The audio alarm itself can be manually bypassed for a set amount of time by the
user. Pressing the ALARM SILENCE key will stop the alarm in increments of 30, 90,
and 180 seconds. The alarm can also be turned back on after silencing.