S R A / S F X 2 1 0 0 S E R I E S S A T E L L I T E R E C E I V E R
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Metric Description
demodulator chip, and is converted to a BER value in the form
x.y E -z.
The accuracy of the values reported for C/No and Eb/No are typically ±1 dB up to a C/No of
15 dB (BER of 1 x 10
-12
). With C/No values higher than 15 dB, the accuracy degrades. (A
DVB signal can be considered error free at greater than 7 dB Eb/No at 7/8 Viterbi, 4 dB
Eb/No at 1/2 Viterbi).
All RF metrics are accurate to the above-mentioned limits, when AFC is set to Fast
Acquisition mode. Performance Mode is recommended for use when large adjacent
carriers are present. The presence of these adjacent carriers affects the C/No estimation
circuitry, with the result that the accuracy of the RF metrics may change. Since the
presence, type and strength of adjacent carriers are site specific, it is not possible to provide
accurate C/No and Eb/No estimation in a general way. It is also difficult to determine what
accuracy there would be with adjacent carriers present, or whether the accuracy would be
any less than that stated above.
RF Metrics Refresh Rate Selection
This area allows you to specify what the refresh rate will be in seconds, for updates to the
metrics displayed in the RF Metrics Display Area. Enter a value between 1 and 99, and
click on the OK word to the right. This will cause the Web GUI to immediately provide the
RF Metrics information to the browser at the specified period in seconds.
Main Menu Tool Bar
The Main Menu Tool Bar provides the top-level menu access for all functions that can be
monitored and controlled in the receiver. The remainder of this chapter will describe these
functions, as organized by menu items, shown in the following menu hierarchy:
Show
Edit
Identity
Back to Main
Cancel Changes
Send Update
Carrier Status
Edit Carrier A
Edit Carrier B
Back to Main
Cancel Changes
Send Update
DVB Carriers
Show Attributes
Edit
Reset LNB Offset
DVB Carrier
LNB Attributes
Back to Main
Cancel Changes
Send Update
Main Menu
Data Delivery
PIDs and Ports
NET PIDs
ASYNC PIDs
SYNC PIDs
Other PIDs
