![background image](http://html.mh-extra.com/html/national-instruments-corporation/sc-207-series/sc-207-series_user-manual_710252025.webp)
SC-2070 Board
Chapter 2
SC-207X Series User Manual
2-8
© National Instruments Corporation
+ Channel
+
E
- Channel
AIGND
To
Input
Multiplexer
-
D
F
G
100 k
Ω
Input Schematic
Component Position
Channel 1
Channel 9
R10
R8
R7
C3
(-in)
(+in)
R11
100 k
Ω
Resistor
Jumpers
Figure 2-7. Bias Return Resistor for DC-Coupled Floating Source on Channel 1
Single-Ended Inputs
When measuring floating signal sources, configure the MIO-16 board to supply a ground reference.
Therefore, configure the MIO-16 for referenced single-ended input. In this configuration, the negative
input of the MIO-16 instrumentation amplifier is tied to the analog ground. Therefore, use the
SC-2070 board in its factory configuration. In the factory configuration, jumpers are in the two series
positions, E and F (see Table 2-1). In this configuration, all of the signal grounds should be tied to
AIGND. Signal conditioning circuitry such as filters and attenuators (described in Building Lowpass
Filters, Building Highpass Filters, and Building Attenuators later in this chapter) can be built in the
open component positions.
Summary of Contents for SC-207 Series
Page 15: ......