National Instruments NI PXI-5422 Instrukcja Użytkownika Pobierz pdf (Strona 53)

4. Call niFgen_SetAttributeViReal64 to set the offset (niFgen

property node: Arbitrary Waveform Output»Arbitrary Waveform

Offset) using the following parameters:

• vi: The session handle returned from

niFgen_InitExtCal

• channelName: "0"

• attributeID: NIFGEN_ATTR_ARB_OFFSET

• value: 0

Note

You can adjust this value based on which measuring device you use.

5. Call

niFgen_SetAttributeViBoolean to set the analog filter state

(niFgen property node: Output Attributes»Analog Filter Enabled)

using the following parameters:

• vi: The session handle returned from

niFgen_InitExtCal

• channelName: "0"

• attributeID: NIFGEN_ATTR_ANALOG_FILTER_ENABLED

• value: VI_TRUE

6. Call niFgen_SetAttributeViReal64 to set the output impedance

(niFgen property node: Basic Operation»Output Impedance) using

the following parameters:

• vi: The session handle returned from

niFgen_InitExtCal

• channelName: "0"

• attributeID: NIFGEN_ATTR_OUTPUT_IMPEDANCE

• value: 50

7. Call niFgen_SetAttributeViBoolean to enable the analog output

(niFgen property node: Basic Operation»Output Enabled) using the

following parameters:

• vi: The session handle returned from

niFgen_InitExtCal

• channelName: "0"

• attributeID: NIFGEN_ATTR_OUTPUT_ENABLED

• value: VI_TRUE

8. Generate an array of waveform samples.

Each waveform should have 20 samples per cycle, with a total of

500 samples and 25 sine wave cycles. Because you set the sample rate

to 200 MS/s and because there are 20 samples per cycle, the resulting

waveform is a 10 MHz sine wave. The sample values of this waveform

must fall between –1.0 and 1.0.

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 ... 62 63

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National Instruments NI PXI-5422 Instrukcja Użytkownika Strona 53