Sample Programs

The following example demonstrates how to program the board using the C programming language under Windows. The example shows how to initialize the counter, set it up for measurement or trigger settings and get the reading.

To run, enter the following command line:

GxCntExample <Slot> <Channel|Measure> <Operation> <Mode|Level>

Where:

<Slot>	PXI Explorer slot number where the board reside.
<Channel\|Measure>	Channel setting or measurement: SCHA= set channel A function, trigger level or trigger mode SCHB= set channel B function, trigger level or trigger mode MEASURE=Read single measurement
<Operation>	Operation code: FREQ=Sets measurement function to frequency PERIOD=Sets measurement function to period TRIG_MODE=Sets the trigger level mode TRIG_LEVEL=Sets the trigger level
<Mode\|Level>	Trigger mode or level depends on the operation: Mode: 0=trigger level set by user 1=trigger level set automatically 2=trigger level uses the last value Level: voltage level (-5.0v to +5.0v)

Sample Programs

<Slot>

PXI Explorer slot number where the board reside.

<Channel|Measure>

Channel setting or measurement:

SCHA= set channel A function, trigger level or trigger mode

SCHB= set channel B function, trigger level or trigger mode

MEASURE=Read single measurement

<Operation>

Operation code:

FREQ=Sets measurement function to frequency

PERIOD=Sets measurement function to period

TRIG_MODE=Sets the trigger level mode

TRIG_LEVEL=Sets the trigger level

<Mode|Level>

Trigger mode or level depends on the operation:

Mode:

0=trigger level set by user

1=trigger level set automatically

2=trigger level uses the last value

Level: voltage level (-5.0v to +5.0v)