LabJack U3 User Manual

Contents

Table Of Contents
Table Of Contents
Table Of Contents
Installation on Windows
Figure 1-2. LJControlPanel U3 Configure Defaults Window
Figure 1-3. LJControlPanel U3 Test Window
Self-Upgrade Application (LJSelfUpgrade)
Hardware Description
Status LED
Table 2-2. ConfigIO Factory Default Values
Channel Numbers
Table 2-6. Nominal Analog Input Voltage Ranges (DAC1 Disabled)
Table 2-8. Fixed Point Conversion Examples
Figure 2-2. Non-Inverting Op-Amp Configuration
Figure 2-3. Voltage Divider Circuit
Figure 2-5. Current Measurement With Arbitrary Load or 2-Wire 4-20 mA Sensor
Internal Temperature Sensor
Typical Analog Output Connections
Digital I/O
Typical Digital I/O Connections
Figure 2-9. Driven Signal Connection To Digital Input
Figure 2-10. Basic Mechanical Switch Connection To Digital Input
Figure 2-12. Relay Connections (Sinking Control, High-Side Load Switching)
Timers/Counters
Timer Mode Descriptions
Timer Operation/Performance Notes
CB15 Terminal Board
U3-OEM
Hardware Revision Notes
Operation
Stream Mode
Streaming Digital Inputs, Timers, and Counter0
LabJackUD High-Level Driver
Function Flexibility
Multi-Threaded Operation
Function Reference
OpenLabJack()
eGet() and ePut()
eAddGoGet()
Go()
GoOne()
GetFirstResult() and GetNextResult()
DoubleToStringAddress()
StringToConstant()
GetDriverVersion()
eAIN()
eDI()
eTCConfig()
eTCValues()
Example Pseudocode
Configuration
Analog Outputs
Timers & Counters
Raw Output/Input
Miscellaneous
Errorcodes
Table 4-3. Group Level Error Codes
Low-Level Function Reference
Low-Level Functions
ConfigU3
ConfigIO
ConfigTimerClock
Feedback
ReadMem (ReadCal)
WriteMem (WriteCal)
EraseMem (EraseCal)
Reset
StreamConfig
StreamStart
StreamData
StreamStop
Watchdog
AsynchConfig
AsynchTX
AsynchRX
SHT1X
A. Specifications
B. Enclosure & PCB Drawings

LabJack U3 User Manual Manual pdf 39 page image

2.13 Hardware Revision NotesStarting September of 2006, all U3 shipments changed from hardware revision 1.20 to 1.21.Following are the some of the main changes in revision 1.21:• The default timer clock frequency is 48 MHz.• All TimerBaseClock frequencies are twice the previous frequencies.• The input timer edge limit is now 30,000 edges/second, compared to the old limit of10,000 edges/second.• Stream mode is now supported. See Section 3.2.• Other new functions are supported, including Watchdog, SPI, Asynch, I2C, and SHT1X.• Typical supply current is 50 mA.Older U3s can be upgraded by LabJack for a small fee. For information about upgrading a rev1.20 unit, go to labjack.com.39

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