
Analog Input Modules
(T7420A, AF)
PD
-
7023
Mar
-
06
21
Figure
12
. Analog Input Module Calibration Potentiometer
Locations.
The I/O extender module has jumper posts that allow you to
connect or disconnect the I/O slot field wiring on the I/O
chassis to the printed circuit board plugged into the I/O
extender. During the calibration steps yo
u will remove any
jumpers installed on these posts in order to connect the DC
voltage signal source to the analog inputs. For modules
configured for 16
-
channel, single
-
ended inputs, Figure
13
shows the jumper posts to which you should connect the signal
source for each analog input channel. For modules configured
for 8
-
channel, differential inputs, Figure
14
shows the jumper
posts to which you should connect the signal source for each
analog in
put channel.
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