How to Measure Power Power Measurement
Agilent 8163A Lightwave Multimeter, Agilent 8164A Lightwave Measurement System, & Agilent 8166A Lightwave
Multichannel System, Fourth Edition
81
13 Enter the range value determined in Step 8, by using the cursor key, and press
Enter.
If the measured power is more than 3dBm greater than the range setting, it is
impossible for power to be displayed. The power value, +1.--- dBm, as shown
in Figure 50, is shown. This means that the measured power is greater than the
Upper Power Limit. You must decrease the [Range] value.
See Table 1 on page 83 for more details.
Figure 49 Manual Range Mode - Within Range
Figure 50 Out of Range - Power Greater Than Upper Power Limit
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