Radyne QAM256 User Manual Page 131

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NMS-4000
Network Management System
P/N 2349-72712-01 Page 6-7
Table 6-1: Configuration/Receiver Menu Options
DSNG
QPSK
QAM
ATM
G.703
OPTION DESCRIPTION
þ
Diseqc-LNB
22Hz Tone
Modulation
Selects the Diseqc-LNB 22Hz Tone.
Available Options:
Modulated
Unmodulated
þ
þ
þ
Frequency Tune
(KHz)
Tune Frequency Received
Displays the tuner programmed frequency of the signal
received at the IRD. Number given in KHz.
NOTE
When the Frequency Drift Compensation function is
activated, the displayed frequency is adjusted by the
frequency offset during receiver operation.
þ
þ
þ
Frequency
Offset
Frequency Offset Value
Indicates the frequency offset between the expected carrier
frequency, And the carrier frequency of the recovered signal
at the antenna. Number is given in KHz.
þ
þ
þ
Signal Quality
(0-100%)
Signal Quality Indicator
Displays the quality of the input signal as a bar. The longer
the bar, the stronger the signal.
The indicator may be used to position the antenna to obtain
optimal signal quality.
þ
þ
Link Margin Link Signal Margin Display
Displays the margin between the input signal strength and
the link margin standard (as per Error Performance
Requirements;
EN300.421 for QPSK input link, and
EN301.210 for DSNG input link.
Number is given in dB above (+dB) or below (-dB) the link
margin standard.
þ
þ
Eb/NO Bit Energy Level
Provides an estimation of the input signal strength (bit
energy) relative to the noise level (spectral density).
Number is given in dB.
NOTE
For a proper reading, wait one minute for value stabilization.
þ
þ
Viterbi BER Viterby Bit Error Rate (BER) Indication
Indicates BER level measured after Viterbi correction.
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