OPERATING INSTRUCTIONS AND SPECIFICATIONS
NI 9208E
16-Channel, ±20 mA, 24-Bit Analog Input Module
This document describes how to use the National Instruments 9208E
and includes dimensions, pin assignments, and specifications for the
NI 9208E. Visit ni.com/info and enter rdsoftwareversion to
determine which software you need for the modules you are using.
For information about installing, configuring, and programming the
system, refer to the system documentation. Visit
enter
cseriesdoc for information about C Series documentation.
Caution National Instruments makes no electromagnetic
compatibility (EMC) or CE marking compliance claims
for the NI 9208E. The end-product supplier is responsible
for conformity to any and all compliance requirements.
Caution The NI 9208E must be installed inside a suitable
enclosure prior to use. Hazardous voltages may be present.
ni.com/info and
NI 9208E Operating Instructions and Specifications 2 ni.com
NI 9208E Dimensions
73.4 (2.89)
0.0 (0.00)
58.4 (2.30)
0.0 (0.00)
The following figure shows the dimensions of the NI 9208E.
© National Instruments Corp. 3 NI 9208E Operating Instructions and Specifications
Figure 1. NI 9208E Dimensions in Millimeters (Inches)
Connecting the NI 9208E
Vsup
Vsup
Vsup
Vsup
Vsup
Vsup
Vsup
Vsup
COM
COM
Vsup
Vsup
Vsup
Vsup
Vsup
Vsup
Vsup
Vsup
AI0
AI1
AI2
AI3
AI4
AI5
AI6
AI7
COM
COM
AI8
AI9
AI10
AI11
AI12
AI13
AI14
AI15
Vsup
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
The NI 9208E has a 37-pin DSUB connector that provides
connections for 16 analog input channels.
NI 9208E Operating Instructions and Specifications 4 ni.com
Figure 2. NI 9208E Pin Assignments
Each channel has an AI pin to which you can connect a current
signal. The NI 9208E also has 17 V
pins, one for connecting an
sup
external power supply, and one for each channel. There are also
four common pins, COM, that are internally connected to the
isolated ground reference of the module.
The input signals are scanned, amplified, conditioned, and then
sampled by a single 24-bit ADC. The module provides overvoltage
protection for each channel. Only one channel can be in an
overvoltage condition at a time. Refer to the Specifications section
for information about overvoltage protection. Refer to Figure 3 for
an illustration of the input circuitry on the NI 9208E.
© National Instruments Corp. 5 NI 9208E Operating Instructions and Specifications
NI 9208E
R
R
Amp
Isolated
ADC
MUX
V
sup
V
sup
AI0
COM
COM
AI15
Figure 3. Input Circuitry on the NI 9208E
NI 9208E Operating Instructions and Specifications 6 ni.com
Loading...