OptoTest OP940-SW Instruction Manual page 22

OP940-SW
Front Panel Operation
Page 1
Page 1
Changes the selected wavelength for the scan
Switches the "gain stage" of the return loss meter. The higher
the number, the more sensitive the meter is to detect smaller
reflections and the more a large reflection will saturate the meter
Switches the return loss source from high-power to low-power.
As with the "gain stage" setting, High will be useful for detecting
small reflections, but will saturate the meter if used to scan large
reflections (single mode only)
Begins or stops a continuous scan of the displayed range. With
Run selected the unit will update the screen continuously
Advances to the next page of options
Returns to the Home Screen
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