Extron Electronics Fiber Optic Test Set Setup Guide

POWER

Fiber Optic Test Set • Setup Guide

This guide provides instructions for an experienced
technician to begin using the Extron Fiber Optic Power
Meter (FPM 101) and Light Source (FLS 101).

The Extron Fiber Optic Test Set includes all the tools needed to measure optical
power and cable loss in multimode (MM) and singlemode (SM) fiber optic AV
equipment and fiber optic cabling. The light source includes both a multimode LED
output that operates at 850 nanometers (nm) and 1300 nm, and a singlemode laser
output that operates at 1310 nm and 1550 nm. The power meter is compatible
with both multimode and singlemode fiber and measures optical power in dBm or
microwatts (µW) and insertion loss in dB.

FPM 101 Function Buttons

Power

This button provides two functions:

z Press and hold to turn the power meter on. The meter turns off after five

minutes of inactivity.

z With the power meter on, press and hold to disable or enable the auto off

feature.

Wavelength/Backlight

This button provides two functions:

z Press and release to manually cycle through the calibrated wavelengths in the

following order:
850 nm > 1300 nm > 1310 nm > 1490 nm > 1550 nm > 850 nm ...

NOTE: When the power meter is receiving a wavelength ID indication

(WAVE ID) from the FLS 101 light source, it automatically switches to
the WAVE ID wavelength.

z With the power meter on, press and hold to toggle the backlight on or off.

dB/dBm/µW

This button provides two functions:

z Press and release to toggle display readings between insertion loss (dB) and

power (dBm).

z Press and hold to view power in microwatts (µW).

Ref/Set

This button provides two functions:

z Press and release to display the stored reference level for the currently

selected wavelength or the stored reference levels for multiple wavelengths.

z Press and hold until HELD SET is displayed to store the currently measured

level, or multiple levels, as the new reference.

µW

1

FPM/FLS 101 • Quick Start Guide (Continued)

Single and Dual WAVE ID mode

FPM 101 Display Readings

The following table lists the display readings for the FPM 101 power meter.

C

REF

D

WAVE ID

E

Item Field Description

Battery status indicator Displays approximate remaining battery life. When

a

REF indicator Press the REF button to toggle through stored reference

b

WAVE ID indicator Displayed when a wavelength has been identified using

c

Wavelength CW mode: Displays the currently enabled wavelength.

d

Power Displays measured power (dBm or µW), or insertion

e

Wavelength / Tone CW mode: Displays detected tone modulation frequency

f

Power

g

(Dual WAVE ID mode
only)

nm

µW

dB dBm

Hz
nm

µW

dB dBm

the indicator flashes, the batteries should be changed
immediately.

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

Single WAVE ID mode: The reference value will be
displayed in field

Dual WAVE ID mode: The reference values will be
displayed in fields

the WAVE ID feature.

Single WAVE ID mode: Displays the detected WAVE ID
wavelength.

Dual WAVE ID mode: Displays the first detected WAVE ID
wavelength.

loss (dB) at the wavelength displayed in field
If power or loss is too high or too low for accurate

measurement, this field will display HI or LO.

in hertz (Hz).
Dual WAVE ID mode: Displays the second WAVE ID

wavelength.

Displays measured power (dBm or µW), or insertion
loss (dB) at the wavelength displayed in field

If power or loss is too high or too low for accurate
measurement, this field will display HI or LO.

F
G

H

I

e

.

e

and g.

d

f

.

e

.

.

2

POWER

Measuring Optical Power

NOTE: It is important to keep all optical connections and surfaces clean to ensure

accurate measurements and operation. Always clean reference cables before
conducting tests.

1. Turn on the FPM 101.

2. Select the appropriate fiber optic reference cable. The reference cable fiber type

(SM or MM), must be the same as the type required by the output being measured.

3. Mount the appropriate adapter cap on the FPM 101 port.

4. Connect one end of the

reference cable to the adapter
cap and the other end to the
optical output to be measured.

5. Press the wavelength button

(see “Wavelength/Backlight”
on page 1) to select the
wavelength matching the
nominal wavelength of the
source being measured. The
selected wavelength is indicated
by

in the display.

e

6. Press the power selection

button (see “dB/dBm/µW” on
page 1) to display power in
dBm, or press and hold to display
power in µW. The power output
is indicated by

in the display.

f

d

c

f

a

WAVE ID

µW Set

dB

dBm

POWER

Adapter Cap

0000

0.00

0000

0.00

Ref

λ

FPM 101

FIBER POWER METER

Hz
nm

µW

dB

Hz

nm

µW

dB

e
f

e

Fiber Optic Equipment

d

Reference Cable

b

FLS 101 Function Buttons

Power Button

Press and hold to toggle the FLS 101 On or Off.

Multimode (MM) WAVE ID / CW Select

This button provides two functions:

z Press and release to cycle through output wavelengths in the

following order:
Dual 850/1300 nm > 850 nm > 1300 nm > dual 850/1300 nm > ...

z Press and hold to switch to CW mode at the current

wavelength, then press and hold the button again to select a
single wavelength in the following order:
850 nm > 1300 nm > 850 nm ...

NOTE: To switch back to WAVE ID mode, press and release the

button again.

CW

850nm

1300nm

MM

3