Exfo FPM-300 Power Meter Manual do Utilizador descarregar pdf (Página 19)

FPM-300/FLS-300/FOT-300 14

6. Match the source and power meter wavelengths:

 If the source emits an auto-wavelength signal

(see Automatically Detecting Wavelength on

page 15), the power meter automatically

matches the source wavelength.

If the source emits an auto-wavelength signal or

is in auto-switching mode (see Automatically Detecting Wavelength on

page 15 and see To receive the auto-wavelength signal or detect the source's

auto-switching mode: on page 15), the power meter automatically matches

the source wavelength.OR

 Press

(power meter)

to switch between pre-selected wavelengths (see

Defining a List of Favorite Wavelengths on page 10).

7. If you want to see a loss value and your power meter displays W or dBm units,

press to access reference mode.

When the unit detects a modulated signal, it beeps and displays the modulation

value and average measured power or loss (see left illustration above). You may

notice a slightly unstable last digit.

8. If necessary, change the displayed units by pressing .

9. Repeat the procedure for other wavelengths.



REF

When power or loss is outside power limits

(see Technical Specifications on page 32)

Actual power or loss

of fiber under test

Modulation detected

dBm/W

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 39 40

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Exfo FPM-300 Power Meter Manual do Utilizador Página 19