Chapter 8 Measure Mode – Basic Tab
Constellation
DSAM Help User Guide Rev. 001 175
3 Using the arrow keys, select Constellation.
4 Press ENTER.
Understanding
Constellation
Results
Measurement
Information Area
The QAM type (64 QAM, 128 QAM, or 256 QAM) and channel number
appear at the top of the screen in the right corner. Directly below the
channel number is the channel frequency and channel level informa-
tion.
Figure 157 Measurement Mode – Basic Tab: Constellation
N
NOTE
To save the results to a file, refer to “Saving Results” on page 198.
Only digital and DOCSIS channels defined in the downstream (for-
ward path) channel plan are available for Constellation testing.
Figure 158 Measure Mode – Constellation
Measurement
Information Area
Digital Performance
Interleaver Depth
21128026 R001 DSAM Help User Guide.book Page 175 Thursday, February 5, 2009 2:02 PM
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