Exfo IQS-12004B DWDM Passive Component Test System for Bedienungsanleitung Seite 171

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Using the Power Meter Linearity Verification Tool
DWDM Passive Component Test System 159
Setting Up the Acquisition Parameters
Note: Since the maximum power value is not equal to 0 dBm, the last power
value displayed on the graph and in the grid will be less than the minimum
power value. However, values under –55 dBm are not taken into account
when determining channel status.
E.g.:
maximum power = –5 dBm
minimum power allowed = –55 dBm
last power value displayed = –60 dBm
On each acquisition, attenuation will be increased and/or decreased of a
value corresponding to the increment (in dB) that you will have specified
during parameter setup.
To set up acquisition parameters:
1. Ensure that the appropriate DUT and reference power meter are
selected. For more information, see Selecting the DUT and Reference
Power Meter on page 157.
2. Select the power direction: Decreasing and/or Increasing.
3. Select the attenuation increment by using the up/down arrows next to
the Attenuation step box.
Attenuation
increment
Power
directions
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