Installation manual

Revision F • 3/12
HARRIS CORPORATION
4-5
4 Using the HDE-200
ing upon the amount of signal processing). Peak
levels are held for one second before decaying.
Ideally, the right end of the average level bar
will fall between -20 and -12 dBFS marks for typi-
cal processed air signals. The levels from -57 dBFS
up to -20 dBFS are displayed using green seg-
ments. Signal levels from -19 dBFS up to -3 dBFS
are shown using amber segments. This is the area
where the average and peak indications should
normally be seen. The amber color indicates you
are getting close to using up the signal headroom.
The last three segments: -2, -1 and 0 dBFS, use
red segments to indicate these levels are danger-
ously close to digital clipping. An occasional peak
in this area is OK, but regular peaks in this area
indicate the level is too hot and digital clipping
may occur.
To the right side of each meter are two Signal
Peak indicators. These blue indicators turn on any
time a signal level of -3 dBFS or higher is detected.
If the blue Peak indicators regularly turn on, the
signal level feeding the HDE-200 is too hot.
4.2.2 DIVERSITY DELAY CONTROL
Status indication and control of the Diversity
Delay are located just below the
Analog meter.
There are two controls in this section (Ramp
Up and Ramp Down) to allow a User to control
the Diversity Delay, which is a delay that delays
the analog broadcast so it is aligned with the HD
Radio broadcast.
The Diversity Delay Status Bar shows both a
visual and the numerical state of the diversity de-
lay. When the delay is out (or ramped down), then
the diversity delay is 0% with 0.00 seconds delay.
When the delay is fully ramped up, then 100%
and the diversity delay setting, in seconds, is shown.
The Progress Bar waxes green from left to right
in a linear fashion as the delay is built from zero
seconds to the target value. The relative length of
the bar corresponds to the percentage completion
of the delay.
If there is currently no Diversity Delay, the Ramp
Up button is enabled. Holding the pointer over
the Ramp Up button (mouse over) turns it Yellow
signifying that clicking will cause the action to oc-
cur.
Once the Ramp Up button is clicked, the Ex-
porter commences inaudibly increasing delay, typi-
cally utilizing the Soft Ramp feature, to the Ana-
log
audio stream. It continues this process until
the Diversity Delay target is reached or the Ramp
Down button is clicked.
The green Progress Bar appears immediately
progressing from left to right as the delay increases.
Also, the amount of delay in seconds and the per-
centage completion begin to increment. While the
Diversity Delay is ramping up, the Ramp Up But-
ton function is “grayed out” and not available for
activation.
Ramp Down may be initiated at any time the
delay is ramping up or when the delay has reached
the “Target Value.” During ramp down, the progress
bar proceeds from right to left. Also, the amount
of delay in seconds and the percentage comple-
tion decrement. While “ramping down” the Ramp
Down button is “grayed out” and not available for
activation.
Meter Source Selection Peak Levels
Average Levels Peak Signal Alarms
ECC App Meter Features
Ramp Down Button Ramp Up Button
Diversity Delay Status Bar
Diversity Status and Ramp Controls