Thermo Scientific 42i Instruction Manual page 213

Analog Output
Calibration
Thermo Fisher Scientific
Use the following procedure to calibrate the analog outputs if a meter
reading in the "Analog Output
one percent or after replacing the optional I/O expansion board.
Equipment Required:
Multimeter
1. Connect a meter to the channel to be adjusted and set to voltage or
current as appropriate.
Table 7–4 identifies the associated channels.
2. From the Main Menu, press
to scroll to Analog Output Calibration > and press
The Analog Output Cal screen appears.
Note If Service Mode is not displayed, refer to
Mode" on page 7-4 , then return to the beginning of this step.
3. At the Analog Output Cal screen, press
voltage channel or current channel corresponding to the rear panel
terminal pin where the meter is connected, then press
4. With the cursor at Calibrate Zero, press
The Analog Output Cal line displays Zero
Note When calibrating the analog output, always calibrate zero first and
then calibrate full-scale.
5. Use until the meter reads 0.0V (or 0.0 or 4.0 mA for a
current channel), then press
6. Press to return to the previous screen.
7. Press to select Calibrate Full-Scale.
8. Use until the meter reads the value shown in the Set
Output To line, then press
Testing" procedure differed by more than
Figure 7–15 shows the analog output pins and
to scroll to Service > press
▲
to save the value.
to save the value.
Servicing
Analog Output Calibration
.
"Accessing the Service
▲
to scroll to the desired
.
.
Model 42i Instruction Manual
>
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