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Chapter 3 Optical Testing
FTTx testing
Storing and
editing
reference levels
Storing an
absolute value as a
reference
16
Measurement
mode
REL (dB)
Watt
Pass/Fail
The display switches to the selected mode.
Measurement results appear on the screen. For more infor-
mation on the results, see
In relative measurement mode, the received signal is
compared to a reference value. This section describes how to
store or edit reference values.
The following procedure describes how to store an absolute
measurement as a reference value.
To store an absolute value as a reference value
1 Run a test in absolute measurement mode.
2 Press the Reference soft key.
3 Select Abs-> Ref.
The absolute power level is stored as new reference value
and the display switches to relative measurement mode.
HST-3000 OLP-3057 Optical Power Meter User's Guide
Description
Relative measurement mode in which the
received signal is compared to the reference
value, with the difference displayed in dB.
NOTE: If no reference value has been stored,
0.00 dBm will be used as reference value.
Relative measurement mode can also be acti-
vated by storing the absolute power level as
reference value (see
value as a reference
Absolute measurement mode, with results
displayed in watts.
A quick qualification measurement, with
results simply "Pass" or "Fail."
Chapter 4 "Test
"To store an absolute
value").
Results".
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