Using the Optical Spectrum Analyzer
The Bandwidth/Sweep Menus
Manually setting the sweep time turns coupling off.
Note
If the sweep time is set too fast, an OVER SWEEP message appears indicating the display is no longer calibrated and that trace data may not meet specifications. Increase the sweep time until the OVER SWEEP message disappears. If the sweep time is set too slow, measurement times may be excessively long.
To turn repeat sweep on and off
1Press the
2Press the Repeat Sweep softkey to toggle this function ON or OFF.
To perform a single sweep
1Press the
2Press the Single Sweep softkey. The instrument will perform a single sweep and then stop.
When first turned on, the optical spectrum analyzer uses free run triggering with continuous sweeps. Free run triggering ensures evenly timed sweeps for a stable display of the current tuning range. Sweeps continuously repeat as long as trigger conditions are met. The SWEEP indicator light on the front panel of the optical spectrum analyzer is on when the sweep is in progress. The indi- cator is off between sweeps.
Note
Single sweep mode is especially useful when programming the instrument. Use single sweeps for the following reasons:
•Insure trace reflects current measurement range settings
•Capture traces before processing them with math commands
•Capture traces before positioning markers