Exiting The Software; Preparing For Measurements; Zeroing The System; Zeroing For A Dut - JDS Uniphase SWS15100 User Manual

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To place a marker at a peak, select the marker and press the Set @Min or Set @Max button.
The selected marker is placed on the appropriate peak. This action provides a simple way,
for example, to get the wavelength between two maximum points.
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To set the marker at the center wavelength, press the Set @CWL button, or press the Set
@Nearest ITU Channel button. The marker is moved to the nearest ITU channel.

Exiting the Software

The group of configuration windows that are open, along with the properties for each window, is
called a workspace. To exit the SWS application, or move to a different test scenario, save the
current configuration window setup. For example, save the window settings, layout, and analysis
settings. To save the settings, exit the application; the system prompts for file names for each of
the configuration windows that are open, plus a filename for the workspace.

Preparing for Measurements

Before DUTs can be tested, the system must be warmed up and zeroed. To warm up the SWS
before taking measurements turn on all the power switches of the SWS components and allow
the components to warm up for a minimum of two hours, after which it is recommended that the
components be left on at all times.

Zeroing the System

Before taking measurements, the system defaults must be set. The default configuration
compensates for optical losses in the optical path not caused by the DUT. Zeroing must be done
a minimum of once each day. Specifications are written based on a reference made directly
before device testing.
To zero the system:
1. Select the physical channel and follow the instructions in the Using SWS Software section.

Zeroing for a DUT

To zero the system for a DUT such as a Fiber Bragg Grating, without using a circulator and
reflector:
1. Set up the equipment as shown in Figure 75.
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Figure 75: Zeroing the System for a DUT
Operating and Maintenance Instructions – 89