Supplementary Configuration Information; Table 2-4. Channel Gain Selection; Table 2-5. Channel Input Mode - National Instruments SC-2040 User Manual

Chapter 2
Switch
U2
U6
U9
U14
U17
U21
U24
U28
Gain Table
Switch
W2
W3
W4
W5
W6
W7
W8
W9
© National Instruments Corporation

Table 2-4. Channel Gain Selection

Description
Unity gain position—For
unity gain (gain = 1), open all
the switches by pushing down
the OFF end of the switches.
(factory setting)
Other gains—Refer to
Supplementary Configuration
Information, later in the
chapter, and the gain table on
the board itself.

Table 2-5. Channel Input Mode

Description
A-B position—Use this
setting for connecting ground-
referenced signals to the
SC-2040 (factory setting).
B-C position—Use this setting
for connecting floating (non-
ground referenced) sources.
A 100 k resistor is
connected from the negative
channel input to the SC-2040
analog ground.
2-5
Configuration and Installation
Configuration
A B C D
1 2 3 4
OFF
The unity gain position has
the number side up.
Configuration
A B C
W2
A B C
W2
The W3–W9 jumper
positions are the same
as on W2.
SC-2040 User Manual