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LabVIEW Applications for Optical Amplifier Automated Measurements,
Fiber-Optic Remote Test and Fiber Sensor Systems
VISA write
221
Wait (ms)
Fig. 29. Programming for “file type save”
VISA write
Fig. 30. Programming for data save.
The end of the program is as shown in Figure 31. This automation program ends with a
VISA Close. The VISA Close closes a device session or event object specified by the VISA
resource name. Finally, the simple error handling function indicates whether an error has
occurred. If an error occurs during the program execution, it will return a description of the
error and optionally displays it in a dialog box. In this section, the measurement data
obtained from the automation program are presented. These data will be used to compare
with the data obtained without using the automation program in the next section.
The results obtained from the automation program for 1310nm wavelength single mode
fiber at 100ns, 200ns and 500ns pulse width are printed on the screen and shown in Figures
32, 33 and 34. The data shown are the event number, distance, splice loss, return loss,
cumulative loss, dB/km, event type and the total return loss. The data are separated by
comma and is ignored if there is no such data for the certain event. The event number is in
accordance with the sequence of the events.
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