Scientific Atlanta PowerVu D9834, Руководство пользователя

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12 PowerVu D9834/D9835 Satellite Receiver User’s Guide 4007520 Rev B
Signal Lock/Quality Tone
No Signal Lock Slow repeating tone
Signal Lock Steady tone
Signal lock + increasing Signal
Quality Steady tone Increasing in pitch
Provided the RF cable is connected between the satellite receiver and the LNB, Signal
Level displays a low number (typically less than 40). As the receiver achieves Signal
Lock, the Signal Level increases, and the tone changes from a slow repeating beep to a
steady tone. Once Signal Lock is obtained, align the dish to increase the Signal Quality
to the best possible value (up to a maximum of 10).
Signal Level and Signal Quality
Your Satellite receiver actively monitors and updates the signal level and signal quality
characteristics of the incoming signal, and displays this information both numerically and
using bar graphs.
The
Signal Level
is associated with the Symbol Rate and signal input level. The Signal
Level display is continuously updated to indicate the relative strength of the received
QPSK input signal. It is displayed in the range from 0 to 99. Signal Level is displayed on
the Main Menu and both numerically and graphically on the Dish Setup menu.
The Signal Quality (displayed in the range from 0 to 10) is associated with the Bit
Error Rate, and is a measure of how much of the original signal information is being
received. Signal Quality is displayed on the Main Menu and both numerically and
graphically on the Dish Setup Menu.
Certain receiver settings can cause signal loss or degradation which can compromise
video or audio information, or data. The effect of any changes you make to your satellite
LNB antenna installation is displayed in real time. Signal Level and Signal Quality can
also be affected by changes at the signal source, and/or by adverse environmental or
terrestrial conditions. Taken in combination, certain receiver settings and signal condi-
tions can cause the Signal Level and Signal Quality to increase or decrease accordingly.
Temporary, solar-related electromagnetic disturbances occur every year during the spring
and autumn months. These disturbances usually persist for several minutes a day for
approximately one week at this time. Your service provider can advise you about chan-
nels that may be adversely affected. See Appendix B for troubleshooting information.
To verify your satellite LNB antenna installation or improve signal reception, refer to
your antenna equipment installation manual, or contact your local service provider.
Signal Lock
The
Signal Lock
status is continuously updated to indicate whether the receiver is syn-
chronized with the received LNB signal. Signal Lock status is displayed on the Preset &
LNB Setup and Dish Setup menus.
If the receiver is able to synchronize to a carrier frequency and an MPEG stream is pre-
sent,
Signal Lock
displays
Yes
and the
Signal
LED on the receiver front panel is on.
A tone can be heard as your receiver achieves signal lock. The tone starts as a slow re-