MR-TR-3G-D
Rev.
0
3.2 Optical power meter
By turning DIP#9 on, the LEDs can be used as an optical power meter. This is
practical under installation of the module. The power measurement is not accurate
but can be used as an indication of optical signal strength. Remember to turn this
function of after installation. When all LEDs are green the optical input power is
more than -6.5dBm. When all LED are off input power is below -25dBm.
Optical input power
Status LED LOS/lock1 LED
LOS/lock2 LED Laser fail LED
More than -6.5dBm
Green
Green
Green
Green
-7.0dBm to –8.5dBm
Yellow
Green
Green
Green
-9.0dBm to –10.5dBm
Red
Green
Green
Green
-11.0dBm to –12.5dBm
Green
Green
Green
-13.0dBm to –14.5dBm
Yellow
Green
Green
-15.0dBm to –16.5dBm
Red
Green
Green
-17.0dBm to –18.0dBm
Green
Green
-18.5dBm to –19.0dBm
Yellow
Green
-19.5dBm to –20.0dBm
Red
Green
-21.0dBm to –22.0dBm
Green
-23.0dBm to –24.0dBm
Yellow
Below -25dBm
Red
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