GE PT878GC Benutzerhandbuch
April 2004
9-24
Servicing the PT878GC
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 [
X
] arrow key to move to the Read box, and then
press
[ENTER]
to read the low input.
6. The next prompt asks for the value to which you want to set
the high input (20 mA).
a. Press
[ENTER]
to open the text box.
b. Use the numeric keys to enter the recommended value.
c. Press
[ENTER]
to confirm your entry.
7. Connect the current source to the input and set it to deliver the
value entered in the previous step.
8. Press the [
X
] arrow key to move to the Read box, and then
press
[ENTER]
to read the high input.
9. Press the [
T
] key to move to the Calibrate box, and press
[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 [
X
] arrow key to move
to the Reset box, and then press
[ENTER]
to undo the
calibration.
b. If you are satisfied with the calibration, press the [
T
] key
to return to the Input# prompt, and repeat steps 2 through 8
for the other input.
for the other input.
You have completed calibrating the inputs. To leave the Inputs
window,
window,
•
Press the [
S
] key to return to the Inputs tab, and the [
W
]
arrow key to move to the Outputs tab.
•
Press
[F2]
(Cancel) to return to Operate Mode without
confirming the changes.
•
Press
[F3]
(OK) to confirm the new data. The PT878GC
returns to Operate Mode.