REF
Save
>2S PERM
Optical Communication Instrument
Unit
PERM
2KHz
REF
nm
dBm
9
88
Record
88
Record
Data Storage and backlight
When in testing interface, user can press
key
. And press the
key
for 2 seconds
.
to the History interface
to save current value
Save
Save
Turn on or turn off the backlight