Specifications
Table 20: Audio Bar Displays (cont.)
Characteristic Performance requirement Reference information
Over Indication Delay Off or 1 to 30 seconds, user selectable
Indication and alarm will not be asserted
until signal stays above the Over Indication
Threshold for this number of consecutive
seconds. Factory default is set to 2. A setting
of 0 is equivalent to “Off”
Peak P rogram level is the level, relative to
digital full scale, that the user chooses as
the maximum desired level for monitored
programs. The meter bars change to red
above Peak Program level
Digital
Range 0 to –30 dBFS
Adjustable
Peak Program
Level
Analog Range 24 to –6 dBu
Test lev el is the level, relative to digital full
scale, that the user chooses as the test or
“line up” level for monitored programs. The
meter bars change to yellow between the
Test and Peak Program levels
Digital
Range 0 to –30 dBFS
Adjustable
Test Level
Analog Range 24 to –6 dBu
Set 0 dB Mark Selections are 0 dBFS or 0 dBu, Peak
Program Level (dB), or Test Level (dB)
Use this item to number the meter scale
relative to Digital Full scale w ith digital
sources, or relative to 0 dBu with analog
sources, or to one of the two user-adjustable
levels. When the zero mark is set to either
Peak Program or Test level, the scale units
are dBr, relative to the 0 dB level; units above
the s elected 0 dB mark are positive, while
units below it are negative
Analog Audio Scale Types Selection of DIN, Nordic, or PPM preset the
scale, test, and reference levels to match
these de fined meter types
Table 21: Audio Bar and Lissajous/Surround Display
C
haracteristic
P
erformance requirement
R
eference inform ation
Description In combination with Bar mode can have
Lissajous or Surround Display in one tile.
(See Table 20.)
Automatic Gain Control (AGC) Lissajous gain control may be on or off AGC time constant: 0.5 second to expand
display after a 0 to –40 dB level transition,
0.05 second to reduce gain after a –40 to
0 dB level transition
20 Waveform Monitors Specifications and Performance Verification