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Manuals and User Guides for LabJack U3. We have
1
LabJack U3 manual available for free PDF download: User Manual
LabJack U3 User Manual (120 pages)
Affordable Multifunction DAQ
Brand:
LabJack
| Category:
Control Unit
| Size: 1 MB
Table of Contents
Table of Contents
4
1 Installation on Windows
7
Control Panel Application (Ljcontrolpanel)
7
Figure 1-1. Ljcontrolpanel Main Window
7
Figure 1-2. Ljcontrolpanel U3 Configure Defaults Window
8
Figure 1-3. Ljcontrolpanel U3 Test Window
9
Figure 1-4. Ljcontrolpanel Settings Window
9
Self-Upgrade Application (Ljselfupgrade)
10
Figure 1-5. Self-Upgrade Application
10
2 Hardware Description
12
Usb
12
Figure 2-1. Labjack U3
12
Status LED
13
GND and SGND
13
Flexible I/O (FIO/EIO)
13
Ain
14
Table 2-2. Configio Factory Default Values
14
Channel Numbers
15
Converting Binary Readings to Voltages
15
Table 2-6. Nominal Analog Input Voltage Ranges (DAC1 Disabled)
16
Table 2-8. Fixed Point Conversion Examples
17
Typical Analog Input Connections
17
Figure 2-2. Non-Inverting Op-Amp Configuration
20
Figure 2-3. Voltage Divider Circuit
21
Figure 2-4. Buffered Voltage Divider Circuit
21
Figure 2-5. Current Measurement with Arbitrary Load or 2-Wire 4-20 Ma Sensor
22
Figure 2-6. Current Measurement with 3-Wire 4-20 Ma (Sourcing) Sensor
22
Internal Temperature Sensor
23
Dac
23
Typical Analog Output Connections
24
Digital I/O
25
Figure 2-7. ± 10 Volt DAC Output Circuit
25
Figure 2-8. Driven Signal Connection to Digital Input
26
Typical Digital I/O Connections
26
Figure 2-9. Driven Signal Connection to Digital Input
27
Figure 2-10. Basic Mechanical Switch Connection to Digital Input
28
Figure 2-11. Passive Hardware Debounce
28
Figure 2-12. Relay Connections (Sinking Control, High-Side Load Switching)
29
Timers/Counters
30
Timer Mode Descriptions
32
Timer Operation/Performance Notes
36
SCL and SDA (or SCA)
36
Db15
36
CB15 Terminal Board
37
RB12 Relay Board
37
U3-Oem
38
Hardware Revision Notes
39
3 Operation
40
Command/Response
40
Stream Mode
42
Streaming Digital Inputs, Timers, and Counter0
43
4 Labjackud High-Level Driver
44
Overview
44
Function Flexibility
45
Multi-Threaded Operation
46
Function Reference
48
Listall()
48
Openlabjack()
49
Eget() and Eput()
50
Eaddgoget()
51
Addrequest()
51
Go()
52
Goone()
53
Getresult()
53
Getfirstresult() and Getnextresult()
54
Doubletostringaddress()
55
Stringtodoubleaddress()
55
Stringtoconstant()
56
Errortostring()
56
Getdriverversion()
57
Tcvoltstotemp()
57
Resetlabjack()
57
Eain()
58
Edac()
58
Edi()
59
Edo()
59
Etcconfig()
60
Etcvalues()
61
Example Pseudocode
62
Open
62
Configuration
63
Analog Inputs
63
Analog Outputs
65
Digital I/O
65
Timers & Counters
66
Stream Mode
68
Raw Output/Input
72
Easy Functions
72
Miscellaneous
73
Errorcodes
75
Table 4-3. Group Level Error Codes
77
5 Low-Level Function Reference
78
General Protocol
78
Low-Level Functions
80
Badchecksum
80
Configu3
81
Configio
84
Configtimerclock
86
Feedback
87
Readmem (Readcal)
95
Writemem (Writecal)
96
Erasemem (Erasecal)
97
Reset
98
Streamconfig
99
Streamstart
101
Streamdata
102
Streamstop
103
Watchdog
104
Spi
106
Asynchconfig
108
Asynchtx
109
Asynchrx
110
I2C
111
Sht1X
113
Errorcodes
114
Specifications
116
Enclosure & PCB Drawings
119
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