AFL MFIS Краткое справочное руководство - Страница 12

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Testing Multimode or Single-mode Links with MFP

Step I - Set the Reference (One Jumper Method)

1. Turn on MFP and verify that it is in regular power meter test mode. Turn on OLS

and allow it to stabilize (minimum of 2 minutes).

2. Set both instruments to the desired wavelength.

3. Select transmit and receive jumpers (fiber type must match link to be tested).

MM: Wrap and secure transmit jumper five times around mandrel.

SM (TIA testing only): Make and secure 30 mm loop in a transmit jumper.

Clean both ends of the transmit jumper!

4. Connect the transmit jumper to the OLS output port (MM or SM respectively).

5. Mount adapter cap on the MFP (must match free connector on transmit jumper).

6. Connect transmit jumper (free end) to the MFP. Display optical power in [dBm].

7. If measured power is outside of the normal range (specified by manufacturer),

clean all fiber connections or replace the transmit jumper. Repeat steps 4 - 7.

8. Set reference level:

– On MFP, press and hold [Ref/Set] until [HELD SET] is displayed to store

currently measured level as the new reference level.

– Once set, MFP switches to [dB] mode. MFP should display [0 dB] ± 0.05 dB.

OLS

Transmit jumper

Mandrel wrap - MM (shown),

or 30 mm loop - SM

0 dB

MFP