Owner's manual

Using the Optional Power Meters and VFL

Power Meter and VFL 9

Setting Reference Values on Your Power Meter

In Reference mode, your unit displays the loss created by the fiber under

test only, since it subtracts a reference value from the measured power.

You can set a different reference value for each wavelength. A reference

value remains in memory until a new one is stored at the same

wavelength.

If the source and power meter you are using has auto-wavelength or

auto-switching capacity, you can take the reference value automatically for

each wavelength as well.

To set reference values to use in Reference mode:

1. Check your fibers and clean them properly.

2. Using the proper adapter and test jumpers, connect a light source to

your power meter.

3. From the Instrument View tab, select the wavelength in the list.

Activate the source at the same wavelength.

If you want to use the auto-wavelength or auto-switching mode, enable

it on the source, then select Auto in the wavelength list (for more

information on the auto-wavelength or auto-switching mode, see

Measuring Power or Insertion Loss on page 10).

4. Tap Reference to save the current power value as the new reference. It

will appear on the upper-right corner of the data display.