Product specifications

Instrumentation Laboratory Exercise 7
It is very important that you know how to acquire voltage
measurements properly. Figure 1- 5 shows two ways to connect the
voltage divider to the data acquisition system. The line going into
Screw Terminal Block pin 1 or pin 2 is the signal line. The line going
into pin 39 is the “ground reference” line, which we will connect to
ground 1 in our circuit. On the left the voltage divider V
div
is
measured relative to ground. On the right both V
div
and the 5 V line
can be measured.
Figure 1-5 Measurement of divider voltage (left) and independent measurement of
upper and lower voltages (right)
Screw
Te r mi n a l
Block
Pin
1
39
R
1
R
2
R
3
5 V
V
div
Screw
Te r m i n a l
Block
Pin
1
39
R
1
R
2
R
3
5 V
V
div
2