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Thermo Fisher Scientific
Connector Label
Reference Designator
INPUT BD
MJ8
HVPS
MJ9
PRES
MJ10
FLOW
MJ11
LED
MJ14
AMB TEMP
MJ15
BENCH HEATER
NTJ1
Pin
Signal Description
2
-15V
3
Ground
4
Lamp Intensity
1
+15V
2
Ground
3
-15V
4
+5V
5
Ground
6
Measurement Frequency Output
7
Sample Hold
8
NC
9
GAIN A
10
GAIN B
1
HV Power Supply Voltage Adjust
2
Ground
3
HV Power Supply On/Off
4
Ground
5
HV Power Supply Voltage Monitor
6
Ground
7
Ground
1
Pressure Sensor Input
2
Ground
3
+15V
4
-15V
1
Flow Sensor Input
2
Ground
3
+15V
4
-15V
5
Ground
1
LED Drive
2
LED Supply
1
Ambient Temperature Thermistor
2
Ground
1
Bench Temperature Input
Model 43i Trace Level-Enhanced Instruction Manual
Troubleshooting
Connector Pin Descriptions
6-17
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Troubleshooting
