GE PT878GC User Manual Page 224

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Servicing the PT878GC 9-23
April 2004
Calibrating Inputs
To open the Inputs window, press the [X] arrow key and press
[ENTER]. The screen appears similar to Figure 9-15 below.
Note: Calibrating the analog inputs requires use of a current
source.
Figure 9-15: The Inputs Window in the Calibrate Option
1. Press the [
T] arrow key to enter the window.
2. The first prompt asks you to select the input.
a. Press
[ENTER] to open the drop-down list.
b. Use the [
T ]or [S] arrow keys to scroll to the desired
output (A or B).
c. Press
[ENTER] to confirm your selection.
3. The next prompt asks for the value to which you want to set
the low input (0 or 4 mA).
a. Press
[ENTER] to open the text box.
b. Use the numeric keys to enter the desired value.
c. Press
[ENTER] to confirm your entry.
Analog Output
Calibrate/Test I/O
Analog Input
Input# A
Low
Cancel OK
4
mA
mA
20
Calibrate
High
Read
Read
Reset
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