National Instruments 4-Channel 用户手册
NI USB-9215 Series User Guide and Specifications
12
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Each channel of the NI USB-9215 Series has a terminal or center pin to
which you can connect the positive voltage signal, AI+, and a terminal or
shield to which you can connect the negative voltage signal, AI–. The
NI USB-9215 with screw terminal also has a common terminal, COM, that
is internally connected to the isolated ground reference of the module.
Refer to Table 3 for the terminal assignments of the NI USB-9215 with
screw terminal. Refer to Figure 7 for the pin assignments of the
NI USB-9215A with BNC.
which you can connect the positive voltage signal, AI+, and a terminal or
shield to which you can connect the negative voltage signal, AI–. The
NI USB-9215 with screw terminal also has a common terminal, COM, that
is internally connected to the isolated ground reference of the module.
Refer to Table 3 for the terminal assignments of the NI USB-9215 with
screw terminal. Refer to Figure 7 for the pin assignments of the
NI USB-9215A with BNC.
Table 3. Terminal Assignments
Module
Terminal
Signal
0
AI0
+
1
AI0–
2
AI1
+
3
AI1–
4
AI2
+
5
AI2–
6
AI3
+
7
AI3–
8
No Connection
9
Common (COM)
0
1
2
3
4
5
6
7
8
9