PON-3 / Operation
5.3
Definitions
LEDs
The LED indicators provide a quick method to identify Pass, Fail, or Marginal readings without having to reading the LCD
screen.
The three LED indicators represent: upstream 1310nm (ONU), downstream 1490nm (OLT) and 1550nm (Video)
respectively. The color codes are intuitive: RED = Fail; ORANGE = Warning; GREEN =Pass.
Thresholds for Pass / Fail
The definitions for the three states (Fail, Warning and Pass) are described as below:
There are 5 Threshold limits:
Limit1:
PON-3 upper measurement capability of the meter
Threshold1:
Maximum level for a Pass, Signal cannot be greater than this value
Threshold2:
Minimum level needed for a Pass. Below this level is either a warning condition.
Threshold3:
Lower limit for Fail. Below this level is a Fail condition.
Limit2:
Lower limit of the PON-3 measurement capability of the meter
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