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Page II-63
180 DSP Operation Manual
Signal Level Meter
Removing Limits from a Limit Set
To remove a limit from the limit set, use the up/down arrow buttons to highlight the limit to
be removed and select the Remove softkey.
Knowing Your Limits
When the 180 DSP performs testing versus a limit set it immediately display the pass/fail
status for each measurement criteria that you have set.
To meet a minimum limit, the measured values must be equal to or greater than the
minimum limit. To meet a maximum limit, the measured values must be less than or equal
to the maximum limit.
• Video Level – This sets the
minimum and maximum analog
video channel levels.
• Video Audio Delta – This sets the
minimum and maximum allowable
video to audio level difference.
• Adjacent Level – This sets the
maximum level variation between
any two adjacent video carriers.
• Video Delta – This sets the maximum difference allowed between the lowest and
highest levels measured for the analog video channels.
• Video Digital Delta – This sets the maximum difference allowed between the lowest
and highest levels measured for the digital video channels.
• Digital Level – This sets the minimum and maximum digital video channel levels.
• QPSK MER – This sets the minimum QPSK MER level for digital video channels.
• 16 QAM MER – This sets the minimum MER for digital video channels with 16 QAM
Modulation.
• 32 QAM MER – This sets the minimum MER for digital video channels with 32 QAM
Modulation.
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