NOYAFA NF-906A - Manual (Page 11)

REF
REF
(5). Shortly press key, the value on screen is the loss value of
the bridle wire being inserted.
(6). If to measure the loss of optical fiber link, it is necessary to
carry out local initialization reference for light source and optical
power meter, as shown in the following Fig, read the initial
reference value on optical fiber meter, and it is available to
press the key continuously to save this reference value.
(7). Put the light source and NF-906 Optical Fiber Meter at the two
ends of optical fiber link being tested respectively, the value on
power meter is just the loss value of optical fiber link being tested
(including the loss of linker).
NF-906 Fiber Power Meter Light Source
NF-906 Fiber Power Meter Light Source
Your excellent helper in cable test! 09