Teledyne AX300-I - Medical application oxygen analyzer - Manual (Page 21)

Portable Oxygen Analyzer Operating Instructions
Teledyne Analytical Instruments
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If your analyzer is set for analog (0-1 VDC) output, you can reconfigure it
to use the digital output by changing a jumper on the internal PC board.
To activate the digital output:
1. Remove the batteries and remove the five screws that hold the case to-
gether.
2. Remove the rear case section leaving the PCB in the front half of the
case.
3. Remove jumper at position JP3 and reinstall it at position JP7.
4. Replace the rear cover and secure in place with five screws. Install the
batteries and recalibrate per Section 2.1.3.
To reconfigure the analyzer from a digital (RS 232) output to analog (0-1
VDC) output, use the same procedure except in step 3 remove the jumper from
JP7 and replace it at JP3.
CAUTION: EXERCISE EXTREME CARE WHILE MODIFYING YOUR MEDICAL DE-
VICE. TELEDYNE WILL NOT BE RESPONSIBLE FOR ANALYZER
MALFUNCTION DUE TO MODIFICATIONS NOT DONE BY THE FAC-
TORY. WE STRONGLY RECOMMEND SENDING THE ANALYZER TO
TELEDYNE FOR ANY DESIRED RECONFIGURATION.
2.2 Operating Instructions
2.2.1 Procedure
Note: Prior to every use, always test the batteries, check the sensor for any leaks or
damage, and check the analyzer calibration.
The AX300-I analyzer can be used to measure a gas mixture for oxygen in
two basic modes:
 In the inhalation side of breathing system upstream of any antibac-
terial filters, humidifiers and other such medicating devices.