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April 2009
Calibrating Inputs (cont.)
4. Connect the current source to the input and set it to deliver the
value entered in the previous step.
5. Press the [ ] arrow key to move to the Read box, and then
[ENTER]
press
6. The next prompt asks for the value to which you want to set
the high input (20 mA).
a. Press
[ENTER]
b. Use the numeric keys to enter the recommended value.
c. Press
[ENTER]
7. Connect the current source to the input and set it to deliver the
value entered in the previous step.
8. Press the [ ] arrow key to move to the Read box, and then
[ENTER]
press
9. Press the [
[ENTER]
to calibrate the inputs.
10.At this point, you have two options:
a. If you are unsatisfied with the calibration, you can reset the
inputs to factory defaults. Press the [ ] arrow key to move
to the Reset box, and then press
calibration.
b. If you are satisfied with the calibration, press the [
to return to the Input# prompt, and repeat steps 2 through 8
for the other input.
You have completed calibrating the inputs. To leave the Inputs
window,
•
Press the [
arrow key to move to the Outputs tab.
•
[F2]
Press
confirming the changes.
•
[F3]
Press
returns to Operate Mode.
9-24
to read the low input.
to open the text box.
to confirm your entry.
to read the high input.
] key to move to the Calibrate box, and press
] key to return to the Inputs tab, and the [ ]
(Cancel) to return to Operate Mode without
(OK) to confirm the new data. The PT878GC
[ENTER]
to undo the
Servicing the PT878GC
] key
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