Data Sheet

1
Free PC Software
After obtaining an optical power value to be used as
reference, the measurement result is compared to this
reference and the loss is automatically
shown on the display.
Loss
measurement
Optical
Power
measurement
Easily measure absolute value of input optical power.
Save results in memory.
Optical
❏ Step 1
Connect light source to 3661-20 with
short reference cable (about 2 m).
❏ Step 2
Select wavelength to be measured
according to light source.
❏ Step 5
Switch to the LOSS display to
measure power loss.
Store the results in memory.
❏ Step 4
Connect light source and 3661-20
to both ends of cable to be
measured.
❏ Step 3
Switch to POWER display to measure
optical power received from light
source. Store this as reference value.
❏
Simple and intuitive operation
Large LCD shows measurement results and memory data at a
glance Ergonomic key layout
❏
Large Memory
*Store 1000 sets of data for each registered wavelength
*Register up to 8 custom wavelengths adjustable in 5nm units
❏
Effective data processing
USB interface and supplied application software allows easy
data management on a computer
Features of 3661-20
Keep the connector safe from
dust and mechanical damage
with sturdy cover.
Top view of 3661-20
Attach connector cover here to
prevent dust from accumulating
on the connector.
Mount optional FC or
SC connector here.
Attach supplied
strap here for
total convenience
and portability.
Quickly collect data
and process it later
on a computer