21
⑶
．
“Del All”
Under “History data”, use
and
to highlight “Del All”,
press “
” to confirm to delete all the saved history data as
shown in below figure.
Chapter 5
Troubleshooting
Problem
Possible Cause
Solution
No display on
the LCD
1. Power Off
1. Lower Battery
1. Press
“
” to turn
on
2. Change the battery
Inaccurate
measurements
1.Optical interface
is not clean
2. Improper fiber
connection
1Clean the fiber optic
interface
2. Reconnect the fiber
