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Thermo Fisher Scientific
Table 6-7. Measurement Interface Board Connector Pin Descriptions, continued
Connector
Reference
Label
Designator
DET
J5
OZONATOR
J6
PHOTOMETER
J7
FAN
J8
FAN
J9
24V IN
J10
DATA
J11
Pin
Signal
Description
4
-15V
1
Frequency Input 1
2
+15V
3
Ground
4
Frequency Input 2
5
-15V
6
Ground
1
Ozonator Lamp Intensity Control
Voltage Output
2
Ozonator Lamp Intensity Control
Voltage Input
3
Ozonator Heater Thermistor
4
+24V
5
Ground
6
Ozonator Lamp On/off Control
7
Ground
8
Ground
1
Photometer Lamp Intensity Control
Voltage Output
2
Photometer Lamp Intensity Control
Voltage Input
3
Photometer Heater Thermistor
4
+24V
5
Ground
6
Photometer Lamp On/Off Control
7
Ground
8
Ground
1
+24V (Fused)
2
Ground
1
+24V (Fused)
2
Ground
1
+24V
2
Ground
1
Ground
Model 146i Instruction Manual
Troubleshooting
Connector Pin Descriptions
6-21
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Troubleshooting
