Revision 7 Date: 22 Jun 2020 Page 7 of 13
3.3 Back Light
Backlight turns on when instrument is first turned on and goes off after 30
sec.
When backlight is off, press any key to turn it back on for 30 sec.
3.4 Selecting Measurement Unit
At Home Display, press [F2] to select measurement unit (dBm or W).
3.5 Relative Measurement Mode
At Home Display, press and hold [▼] to enter Relative Measurement mode;
the displayed measurement unit will change to dB. Press [F2] to exit Relative
Measurement mode.
3.6 Threshold Setup
3.6.4
When a wavelength is selected, press and hold [OK] to enter Threshold
Editing mode.
Use [◄, ►] to move cursor onto threshold type & onto digit to be edited; the
selected digit will blink.
3.6.1
At Home Display, press and hold [▲]
to enter Threshold Management Display,
see picture on the right.
3.6.2
Choose a threshold group number
from the available 01, 02, 03 using [▲, ▼].
3.6.3
W
hen a threshold group is selected,
use [◄, ►] to select wavelength from the
available 1310, 1490, 1550 nm.
Selected threshold group
