GE CTF878, Руководство пользователя и обслуживания

Страница: 35 / 72

February 2009
3-4 Calibration
Testing and Calibrating
Analog Inputs
The Calibration/Test option can be used to test and calibrate the
analog inputs. To enter the option, scroll to the AnalogIns option
under the Calibrate/Test Menu and press
[ENTER]
. The screen appears
similar to Figure 3-2 on page 3-2.
Testing Analog Inputs
To test an Analog Input, you must connect a current source to the
analog input. Proceeding as above, select the Test AnalogIn option for
the Analog In to be tested, and press [
ENTER
]. The screen appears as
in Figure 3-4 below. It displays the analog input current RAW count
from the A/D. When the input current changes, you can press [
F3]
(OK) to update the RAW count or [
F2
] (Cancel) to exit.
Figure 3-4: AnalogIn Test Window
If you pressed [
F3
] (OK), a clock appears in the middle of the screen
with the message “
TESTING IO”
below it. When the test is complete,
the screen returns to Operate Mode.
Repeat the process to test additional Analog Inputs.
Site Program Meter Logging
Counts = 65535
Press 'Cancel' to exit or 'OK' for
another reading
Cancel OK
Service
AnalogIn Test