BNC-2081 Board
Chapter 3
BNC-208X Series User Manual
3-4
© National Instruments Corporation
Table 3-1. Component Positions in Each Channel
Position in Figure 3-3
Channel
A
B
C
D
0
R1
R2
R3
R13
1
R4
R5
R6
R14
2
R7
R8
R9
R15
3
R10
R11
R12
R16
4
R19
R20
R21
R31
5
R22
R23
R24
R32
6
R25
R26
R27
R33
7
R28
R29
R30
R34
When the board is shipped, a jumper is inserted in the
C
position of the input network. The jumper can
be easily removed to build analog input signal conditioning circuits. A few specific applications showing
the use of these open component positions are discussed in
Application Notes
later in this chapter.
Shield Ground
Jumper W1 is used to connect digital ground (DGND) to a grounded metal case. This option is useful
only if the BNC-2081 board is on metal standoffs and mounted in a grounded metal case. Shield
grounding can be selected to reduce noise.
Figure 3-4 shows the jumper settings for W1.
Shield Ground Selected
Shield Ground Not Selected
• •
W2
• •
W2
• •
Figure 3-4. W1 Jumper Settings
