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Performs the following initialization actions:
- Opens a session to the specified device using the interface and address that you specify for Resource Name.
- If Reset Device is set to TRUE, this VI resets the device to a known state.
- Sends initialization commands to set the instrument to the state necessary for NI-FGEN operation.
- Returns a session handle that you can use to identify the device in all subsequent NI-FGEN VI calls.
Resource Name specifies the instrument name, for example "PXI1Slot3" where "PXI1Slot3" is an instrument name assigned by Measurement & Automation Explorer (MAX).
For Traditional NI-DAQ devices, the syntax is DAQ::n, where n is the device number assigned by MAX, as shown in Example 1.
For NI-DAQmx devices, the syntax is just the device name specified in MAX, as shown in Example 2. Typical default names for NI-DAQmx devices in MAX are Dev1 or PXI1Slot1. You can rename an NI-DAQmx device by right-clicking on the name in MAX and entering a new name.
An alternate syntax for NI-DAQmx devices consists of DAQ::NI-DAQmx device name, as shown in Example 3. This naming convention allows for the use of an NI-DAQmx device in an application that was originally designed for a Traditional NI-DAQ device. For example, if the application expects DAQ::1, you can rename the NI-DAQmx device to 1 in MAX and pass in DAQ::1 for the resource name, as shown in Example 4.
If you use the DAQ::n syntax and an NI-DAQmx device name already exists with that same name, the NI-DAQmx device is matched first.
You can also pass in the name of an IVI logical name or an IVI virtual name configured with the IVI Configuration utility, as shown in Example 5. A logical name identifies a particular virtual instrument. A virtual name identifies a specific device and specifies the initial settings for the session.
Id Query specifies whether to verify that NI-FGEN supports the device you initialize.
Circumstances can arise where sending an ID query to the device is undesirable. When you set this parameter to FALSE, the VI initializes the device without performing an ID query.
Default value: True
Reset Device specifies whether you want to reset the device during the initialization procedure.
Set Reset Device to TRUE to reset the device. Reset Device performs the same function as the niFgen Reset VI.
Default value: True
Option String specifies the initial values of certain session properties.
Default Values: "Simulate=0,RangeCheck=1,Cache=1, QueryInstrStatus=1"
The syntax for Option String is attributeName=value
attributeName = the name of the attribute
value = the value to which the attribute is set.
To set multiple properties, separate them with a comma.
If you do not wire this input or pass in an empty string, the session uses the default values for these properties. You can override the default values by assigning a value explicitly in a string that you pass for this input. You do not have to specify all of the properties and may leave any of them out. If you do not specify one of the properties, its default value is used.
If simulation is enabled (Simulate=1), you may specify the device that you want to simulate. To specify a device, enter the following syntax in Option String.
DriverSetup=Model:< driver model number >;BoardType:< module type >;MemorySize:< size of onboard memory in bytes >
Option String Examples:
error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
Default value: no error
Instrument Handle Out passes a reference to your instrument session to the next VI.
error out contains error information. This output provides standard error out functionality.