Greenlee Communications GVIS300C Guia Del Usuario página 21

User Guide
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Set PASS/FAIL Parameters
Touch the "Settings" button in the top right to open the PASS/FAIL parameter screen. Enter the
desired Min and Max values and touch "OK" to return to the power meter screen.
Any reading which falls between your Min and Max values will show as GREEN in the power meter
window. All other readings will be RED. This is a simple way to see if readings PASS or FAIL.
3
Change Measurement Mode
Touch the "Mode" button to switch between the two power meter measurement modes.
dB is a loss measurement mode which represents a logarithmic ratio between two power levels.
When a reference is set at a specific optical power level and then the power level is reduced (this
happens when fiber is added between source and receiver), the dB measurement is affected. LOSS of
optical power will give a positive dB value.
dBm is an absolute power measurement mode which references 1mW (milliWatt) of optical power.
This mode is used when the output power of an optical light source needs to be measured.
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