Servicing
Ambient Temperature Calibration
7-30 Model 48i Instruction Manual Thermo Electron Corporation
5. Use until the meter reads 0V, then press to save the
value.
6. Press to return to the Analog Output Cal: screen.
The Analog Output Cal: screen displays.
7. Press to select Calibrate Full Scale.
The Analog Output Cal: Span screen displays.
8. Use until the meter reads the value shown in the Set
Output To: line, then press to save the value.
Ambient Temperature
Calibration
Use the following procedure to calibrate the ambient internal temperature
for the instrument.
Equipment Required:
Calibrated thermometer or 10K ±1% resistor
1. Remove the instrument cover.
2. Tape the thermistor (Figure 7-3) to a calibrated thermometer.
WARNING The service procedures in this manual are restricted to qualified
service representatives.
If the equipment is operated in a manner not specified by the manufacturer,
the protection provided by the equipment may be impaired.
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly grounded antistatic wrist strap must
be worn while handling any internal component.
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