Omega OMB-DAQ-2416_4AO ユーザーズマニュアル
OMB-DAQ-2416-4AO User's Guide
Installing the OMB-DAQ-2416-4AO
11
Screw terminal pin out
– differential
Figure 3. 16-channel differential mode pin out
Differential connection guidelines
When connecting differential voltage inputs to a "floating" voltage source, make sure there is a DC return
path from each voltage input to ground. You make this path by connecting a resistor from each input to a
GND pin (pins 18, 36, 39, 42, 44, 46, 66, 81, 84). A value of approximately 100 kΩ can be used for most
applications.
GND pin (pins 18, 36, 39, 42, 44, 46, 66, 81, 84). A value of approximately 100 kΩ can be used for most
applications.
Leave any unused input channels either floating or tied to GND (pins 18, 36, 39, 42, 44, 46, 66, 81, 84).
Source impedances should be kept as small as possible to avoid settling time and accuracy errors.
When configuring thermocouple sensors, keep any stray capacitance as small as possible relative to GND
(pins 18, 36, 39, 42, 44, 46, 66, 81, 84) to avoid settling time and accuracy errors. For thermocouple
channels, do not provide a return path to ground. This is done internally.
channels, do not provide a return path to ground. This is done internally.
49
NC
No connection
50
CH15L
Channel 15 LO
51
CH15H
Channel 15 HI
52
NC
No connection
53
NC
No connection
54
CH14L
Channel 14 LO
55
CH14H
Channel 14 HI
56
NC
No connection
57
NC
No connection
58
CH13L
Channel 13 LO
69
CH13H
Channel 13 HI
60
NC
No connection
61
NC
No connection
62
CH12L
Channel 12 LO
63
CH12H
Channel 12 HI
64
NC
No connection
No connection
NC
1
Channel 0 HI
CH0H
2
Channel 0 LO
CH0L
3
No connection
NC
4
No connection
NC
5
Channel 1 HI
CH1H
6
Channel 1 LO
CH1L
7
No connection
NC
8
No connection
NC
9
Channel 2 HI
CH2H
10
Channel 2 LO
CH2L
11
No connection
NC
12
No connection
NC
13
Channel 3 HI
CH3H
14
Channel 3 LO
CH3L
15
No connection
NC
16
No connection
NC
17
Analog ground
GND
18
Channel 4 HI
CH4H
19
Channel 4 LO
CH4L
20
No connection
NC
21
No connection
NC
22
Channel 5 HI
CH5H
23
Channel 5 LO
CH5L
24
No connection
NC
25
No connection
NC
26
Channel 6 HI
CH6H
27
Channel 6 LO
CH6L
28
No connection
NC
29
No connection
NC
30
Channel 7 HI
CH7H
31
Channel 7 LO
CH7L
32
No connection
NC
33
No connection
NC
34
+5 V output
+5V
35
Analog ground
GND
36
Analog out 0
VDAC0
37
Analog out 1
VDAC1
38
Analog ground
GND
39
Analog out 2
VDAC2
40
Analog out 3
VDAC3
41
Analog ground
GND
42
Counter input 0
CTR0
43
Analog ground
GND
44
Counter input 1
CTR1
45
Analog ground
GND
46
No connection
NC
47
No connection
NC
48
65
NC
No connection
66
GND
Analog ground
67
CH11L
Channel 11 LO
68
CH11H
Channel 11 HI
69
NC
No connection
70
NC
No connection
71
CH10L
Channel 10 LO
72
CH10H
Channel 10 HI
73
NC
No connection
74
NC
No connection
75
CH9L
Channel 9 LO
76
CH9H
Channel 9 HI
77
NC
No connection
78
NC
No connection
79
CH8L
Channel 8 LO
80
CH8H
Channel 8 HI
81
GND
Analog ground
82
NC
No connection
83
NC
No connection
84
GND
Analog ground
85
DIO7
Digital input/output
86
DIO6
Digital input/output
87
DIO5
Digital input/output
88
DIO4
Digital input/output
89
DIO3
Digital input/output
90
DIO2
Digital input/output
91
DIO1
Digital input/output
92
DIO0
Digital input/output
93
DGND
Digital I/O ground
94
DGND
Digital I/O ground
95
NC
No connection
96
NC
No connection