Octagon 6000 Series, User Manual

Page: 102 / 233

8-7
6000 Series user’s manual Analog I/O
≡
6040 analog input reference adjustment
The analog input reference voltage is adjusted at the factory and nor-
mally will not require adjustment. If necessary, this reference adjust-
ment can be readjusted to the factory setting or can also be offset to
measure up to a 5% over range input. If adjustment is required, pro-
ceed with the following:
1. Attach a digital voltmeter between TP1(+) and TP2, connecting the
positive lead to TP1(+).
2. For standard factory adjustment, adjust potentiometer R1 until a
reading of 4.096V is attained.
3. For over range input adjustment, adjust potentiometer R1 to the follow-
ing table:
Table 8-3 Over range input adjustment
Over range % Voltmeter reading
1% 4.137V
2% 4.178V
3% 4.219V
4% 4.260V
5% 4.301V
Figure 8-2 Analog input reference voltage potentiometer
R1: analoginput reference voltage potentiometer
TP2
TP1(+)