Analog Input Calibration - Thermo Scientific 5028i Instruction Manual

Analog Input
Calibration
Calibrating the Input
Channels to Zero Volts
Calibrating the Input
Channels to Full-Scale
Thermo Fisher Scientific
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
Mode" on page 7-4, then return to the beginning of this step.
2. At the Analog Input Cal screen, press
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 >
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 7–9
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
selected in Step 1, and press
to return to the Analog Input Cal screen and
"Calibrating the Input Channels to
shows the analog input pins and
.
Model 5028i Instruction Manual
Servicing

Analog Input Calibration

"Accessing the Service
s
to scroll to a channel,
.
Full-Scale"
Table
to scroll to the channel
7-21