JDS Uniphase DSAM-3500, Руководство пользователя

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Chapter 8 Measure Mode – Basic Tab
Level
156 DSAM Help User Guide Rev. 001
Analog Channel
Display
Measurement
Information Area
This area displays information about the current channel. Information
that is displayed in this area includes:
– Overall pass/fail indicator
– Channel label
– Channel type (Single, TV, Dual, Digital, or DOCSIS)
– Limit
– Channel number
– Test point compensation (if applicable)
Video Information This area displays the channel’s video frequency and level.
Audio Information This area displays the channel’s primary audio frequency and level as
well as the delta between the video and audio levels.
Secondary Audio
Information
This area (if broadcast) displays the channel’s secondary audio
frequency and level as well as the delta between the video and audio
levels.
C/N Carrier-to-noise ratio in decibels if the hardware supports it.
Figure 144 Measure Mode – Level (analog channel)
C/N
Video Information
Measurement
Information Area
Audio Information
Secondary Audio
Information
NOTE
For information about how to read the graph, see “Reading Mea-
surement Graphs” on page 196 .
21128026 R001 DSAM Help User Guide.book Page 156 Thursday, February 5, 2009 2:02 PM