Thermo Scientific 5028i, Инструкция по эксплуатации

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Servicing
Analog Input Calibration
Thermo Fisher Scientific Model 5028
i
Instruction Manual 7-21
Use the following procedures to calibrate the analog inputs after
replacing the optional I/O expansion board. These procedures include
selecting analog input channels, calibrating them to zero volts, and then
calibrating them to full-scale using a known voltage source.
Use the following procedure to calibrate the input channels to zero
volts.
1. From the Main Menu, choose Service >
Analog Input Cal .
The Analog Input Cal screen appears.
Note
If Service Mode is not displayed, refer to “ Accessing the Service
Mode ” on page 7-4 , then return to the beginning of this step.
s
2. At the Analog Input Cal screen, press to scroll to a channel,
and 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 > to return to the Analog Input Cal screen and
repeat Steps 2 through 4 to calibrate other input channels to zero as
necessary.
6. Continue with the “ Calibrating the Input Channels to Full-Scale ”
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 7–9 shows the analog input pins and Table
7–5 identifies the associated channels.
2. From the Main Menu, choose Service > Analog Input Cal .
The Analog Input Cal screen displays input channels 1-8.
3. At the Analog Input Cal screen, press to scroll to the channel
selected in Step 1, and press .
Analog Input
Calibration
Calibrating the Input
Channels to Zero Volts
Calibrating the Input
Channels to Full-Scale