Exfo IQS-12004B DWDM Passive Component Test System for Uživatelský manuál Strana 172

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Using the Power Meter Linearity Verification Tool
160 IQS-12004B
Verifying Linearity on a Specific Channel
Verifying Linearity on a Specific Channel
Linearity must be verified on each channel of the power meter to be
tested. After each acquisition, a linearity value is calculated:
reference power meter result – DUT result = linearity value
The channel status (Pass/Fail) will be determined by comparing the
obtained value to the limit linearity (value appearing on the upper right of
the Instrument function tab).
The channel will be tagged as Pass if
otherwise, it will be identified as Fail.
IMPORTANT
Linearity values obtained when power is under –55 dBm are not
taken into account when determining the channel status, due to
the power meter specifications.
Current
channel
status
Pass/Fail
criterion
(non-editable)
obtained linearity permitted limit
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