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//eAIN

/Take a single-ended measurement from AIN3.

(Handle, ChannelP, ChannelN, *Voltage, Range, Resolution,

served1, Reserved2)

/eDAC (Handle, Channel, Voltage, Binary, Reserved1, Reserved2)

e, 0, 3.1, 0, 0, 0);

DO(lngHandle, 3, 1);

1 output timer and 1 input timer, and enable Counter0.

h the desired values, then make the call.

/ TimerClockBaseIndex, TimerClockDivisor, *aTimerModes,

nd re er1), read and reset Counter0, and update

lue ( er (Timer0).

he ar ues, then make the call.

reset Timer1

/ Reserved2);

oudest. The frequency of the signal sent to the buzzer is

ery n iterations of the main U3 firmware loop. The following

// Settling, Binary, Re

eAIN(lngHandle, 3, 31, &dblVoltage, 0, 0, 0, 0, 0, 0);

printf("AIN3 value = %.3f\n",dblVoltage);

//Set DAC0 to 3.1 volts.

eDAC(lngHandl

//Read state of FIO2.

//eDI (Handle, Channel, *State)

eDI(lngHandle, 2, &lngState);

printf("FIO2 state = %.0f\n",lngState);

/Set FIO3 to output-high.

//eDO (Handle, Channel, State)

//Enable and configure

Fill the arrays wit

alngEnableTimers = {1,1}; //Enable Timer0-Timer1

alngTimerModes = {LJ_tmPWM8,LJ_tmRISINGEDGES32}; //Set timer modes

blTimerValues = {16384,0}; //Set PWM8 duty-cycle to 75%.

alngEnableCounters = {1,0}; //Enable Counter0

/eTCConfig (Handle, *aEnableTimers, *aEnableCounters, TCPinOffset,

// *aTimerValues, Reserved1, Reserved2);

eTCConfig(lngHandle, alngEnableTimers, alngEnableCounters, 0, LJ_tc48MHZ, 0,

alngTimerModes, adblTimerValues, 0, 0);

//Read a set the input timer (Tim

//the va duty-cycle) of the output tim

//Fill t rays with the desired val

alngReadTimers = {0,1}; //Read Timer1

alngUpdateResetTimers = {1,1}; //Update Timer0 and

alngReadCounters = {1,0}; //Read Counter0

ngResetCou ters = {1,0}; //Reset Counter0

adblTimerValues = {32768,0}; //Change Timer0 duty-cycle to 50%

//eTCValues (Handle, *aReadTimers, *aUpdateResetTimers, *aReadCounters,

// *aResetCounters, *aTimerValues, *aCounterValues, Reserved1,

eTCValues(lngHandle, alngReadTimers, alngUpdateResetTimers, alngReadCounters,

alngResetCounters, adblTimerValues, adblCounterValues, 0, 0);

printf("Timer1 value = %.0f\n",adblTimerValues[1]);

printf("Counter0 value = %.0f\n",adblCounterValues[0]);

4.3.10 Miscellaneous

The U3 has a buzzer that can be used to make noise. The buzzer has a resonant frequency of

about 4 kHz where it is the l

determined by toggling the signal ev

IOType is used to control the buzze

Analog Outputs	2
Analog Output Resolution	10 bits
Digital I/O	20
Counter/Timers	2
Interface	USB
Operating Voltage	5 V
Manufacturer	LabJack Corporation
Analog Inputs	16
Analog Input Resolution	12-bit
Max Sample Rate	50 kHz

LabJack U3 User Manual

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LabJack U3 Specifications