Calibrating The Input Channels To Full-Scale - Thermo Scientific 42i Instruction Manual

Servicing
Analog Input Calibration
Calibrating the Input
Channels to Full-Scale
7-34 Model 42i Trace Level Instruction Manual
1. From the Main Menu, press
to scroll to Analog Input Calibration, and press
The Analog Input Cal screen displays.
Note If Service Mode is not displayed, refer to
Mode" on page 7-4, then return to the beginning of this step.
2. At the Analog Input Cal screen, press
press .
3. With the cursor at Calibrate Zero, press
The screen displays the input voltage for the selected channel.
4. Make sure that nothing is connected to the channel input pins and
press to calibrate the input voltage on the selected channel to
zero volts.
The screen displays 0.00 V as the voltage setting.
5. Press >
repeat Steps 2 through 4 to calibrate other input channels to zero as
necessary.
6. Continue with the
procedure that follows.
Use the following procedure to calibrate the input channels to full scale by
applying a known voltage to the channels.
Equipment Required:
DC voltage source (greater than 0 volts and less than 10 volts)
1. Connect the known DC voltage source to the input channel (1-8) to be
calibrated. Figure 7–16
identifies the associated channels.
2. From the Main Menu, press
to scroll to Analog Input Calibration, and press
The Analog Input Cal screen displays input channels 1-8.
to scroll to Service, press
to return to the Analog Input Cal screen and
"Calibrating the Input Channels to
shows the analog output pins and
to scroll to Service, press
.
"Accessing the Service
▲
to scroll to a channel, and
.
Full-Scale"
Table 7–5
.
Thermo Fisher Scientific
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