Setup Guide Instruction Manual
FPM/FLS 101 • Quick Start Guide (Continued)
2
FPM 101 Display Readings
The following table lists the display readings for the FPM 101 power meter. 
WAVE ID
nm
µW
nm
dB dBm
µW
dB dBm
Single and Dual WAVE ID mode 
REF
Hz
F
G
H
I
C
D
E
Item Field Description
a
Battery status indicator Displays approximate remaining battery life. When 
the indicator flashes, the batteries should be changed 
immediately.
b
REF indicator Press the REF button to toggle through stored reference 
values. The reference values for the currently selected 
wavelength (CW) or detected WAVE ID wavelengths will 
be displayed briefly in the following order:
CW mode: The reference value will be displayed in field 
e
.
Single WAVE ID mode: The reference value will be 
displayed in field 
e
.
Dual WAVE ID mode: The reference values will be 
displayed in fields 
e
 and 
g
.
c 
WAVE ID indicator  Displayed when a wavelength has been identified using 
the WAVE ID feature.
d 
Wavelength CW mode: Displays the currently enabled wavelength.
Single WAVE ID mode: Displays the detected WAVE ID 
wavelength.
Dual WAVE ID mode: Displays the first detected WAVE ID 
wavelength.
e 
Power Displays measured power (dBm or µW), or insertion 
loss (dB) at the wavelength displayed in field 
d
.
If power or loss is too high or too low for accurate 
measurement, this field will display HI or LO.
f 
Wavelength / Tone CW mode: Displays detected tone modulation frequency 
in hertz (Hz).
Dual WAVE ID mode: Displays the second WAVE ID 
wavelength.
g 
Power 
(Dual WAVE ID mode 
only)
Displays measured power (dBm or µW), or insertion 
loss (dB) at the wavelength displayed in field 
f
.
If power or loss is too high or too low for accurate 
measurement, this field will display HI or LO.








