
Teledyne API – Model T300/T300M CO Analyzer
Troubleshooting and Service
293
12.6.3.2.
ADJUSTING THE SYNC/DEMODULATOR, CIRCUIT GAIN
To adjust the sync/demodulator circuit gain:
1. Make sure that the analyzer is turned on and warmed up.
2. Set the analyzer display to show the
STABIL
or
CO STB
test function.
3. Apply Zero Air to Sample Inlet of the analyzer.
4. Wait until the stability reading falls below 1.0 ppm.
5. Change the analyzer display to show the
CO MEAS.
6. Remove the Sync/Demod Housing
•
Remove the two mounting screws.
•
Carefully lift the housing to reveal the sync/demod PCA.
Figure 12-19: Location of Sync/Demod Housing Mounting Screws
7. Adjust potentiometer VR1 until
CO MEAS
reads 4500 mV ± 300 mV
VR1
Adjustment Made Here
Figure 12-20: Location of Sync/Demod Gain Potentiometer
06864B DCN6314
Summary of Contents for T300
Page 2: ......
Page 12: ...Teledyne API Model T300 T300M CO Analyzer x This page intentionally left blank 06864B DCN6314 ...
Page 25: ...23 PART I GENERAL INFORMATION 06864B DCN6314 ...
Page 26: ...24 06864B DCN6314 ...
Page 89: ...87 PART II OPERATING INSTRUCTIONS 06864B DCN6314 ...
Page 90: ...Getting Started Teledyne API Model T300 T300M CO Analyzer 88 06864B DCN6314 ...
Page 243: ...241 PART III TECHNICAL INFORMATION 06864B DCN6314 ...
Page 244: ...06864B DCN6314 ...
Page 245: ...243 06864B DCN6314 ...
Page 246: ...06864B DCN6314 ...
Page 386: ...This page intentionally left blank B 2 06864B DCN6314 ...
Page 395: ...APPENDIX D Wire List and Electronic Schematics 06864B DCN6314 D 1 ...
Page 396: ...This page intentionally left blank D 2 06864B DCN6314 ...
Page 400: ...This page intentionally left blank D 6 06864B DCN6314 ...
Page 401: ...06864B DCN6314 D 7 ...