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Step 2 - Enter the
channel number of the
TDMA reference signal.
Step 4 - Press SHIFT, REF SET, ENTER
to set the present signal level to be the
measurement reference level. All
subsequent power measurements are
relative to the indicated value.
Notice that the Test Set now indicates that
the displayed measurement is referenced
to some other level.
The 0.004dB reading in this example
indicates that the reference signal's level
has changed very slightly since the
reference level was first set.
Figure 48
Setting a Relative TX Power measurement reference.
Chapter 4, Making Measurements
Power Measurements
Step 3 -With a signal
of a known
amplitude and
frequency applied,
position the cursor
in front of the dB
units.
Note: In this case,
the 0dBm signal we
are using as a
reference indicated a
level of 0.91 dB.
txpower_db_digmeas.tif
txpower_db_ref.tif
133
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