Exfo FOT-5200 Coarse Spectrum Analyzer Uživatelský manuál stáhnout pdf (Strana 25)

Setting Up and Operating your FOT-5200

CWDM Analyzer 19

Finding Relative Value (dB) of All Channels

The following shows the relative value (dB) of all channels based on

independent standard value (dBm), which appears when you press

dB/dBm ( ) on the SCAN ALL screen.

If you press ALL SCAN from the current state, it scans the newly measured

value (dBm) to compare with the existing standard value REF (dBm) and

generates the relative value (dB).

Press dB/dBm once more to cancel the relative value (dB/dBm) mode.

Relative value (dB)

Standard value (dBm)

Relative value (dB)

New absolute value (dBm)

Existing absolute value (dBm)

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Exfo FOT-5200 Coarse Spectrum Analyzer Uživatelský manuál Strana 25