Joinwit JW3213 Series User Manual page 14

"
Use
thresholds rang and name have already set in the software, and also
download to the instrument, please check with the user manual of Chapter
6 data communication), For example choose threshold and name it as "a"
and press"
Press"
Clean the tested optic cable, connect with OLT/VIDEO port and ONT port,
(SC type connector), noted with the optic adaptor type, the optical adaptor
1 3
or "
to choose the required threshold value,(The
".
" back to the testing menu.