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Troubleshooting
Connector Pin Descriptions
Thermo Fisher Scientific
Model 43i Trace Level-Enhanced Instruction Manual
6-17
Connector Label
Reference Designator Pin Signal Description
2
-15V
3
Ground
4
Lamp
Intensity
INPUT BD
MJ8
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
HVPS
MJ9
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
PRES
MJ10
1
Pressure Sensor Input
2
Ground
3
+15V
4
-15V
FLOW
MJ11
1
Flow Sensor Input
2
Ground
3
+15V
4
-15V
5
Ground
LED MJ14 1
LED
Drive
2
LED
Supply
AMB TEMP
MJ15
1
Ambient Temperature Thermistor
2
Ground
BENCH HEATER
NTJ1
1
Bench Temperature Input