User manual

IRD-2900 Series
Professional Integrated Receiver Decoders
Scopus Documents (p/n 100793) Page 3-75
The available options are:
• Signal Quality – Qualitative indicator of the received signal C/N relative
to the maximum C/N that can be measured without forcing the receiver
to saturation.
Signal Quality
100 [%]
< 000 - 100 >
The Available range is a percentage value between 0 and 100.
• Eb/N0 – Received signal Eb/N0 measurement
• Link Margin – The estimated C/N of the received signal relative to the
C/N in EN 300-421 for a given Viterbi rate
• Viterbi BER – Errored bits that the Viterbi error correction did not
correct. BER is measured over 10
7
symbols.
• Frequency Tune – The value is dependent on the mode selected in
RootÆ Configuration Æ Receiver Æ Freq Drift Compensate (see
Paragraph 3.3.1.1/7)
When Frequency Drift Compensate is set to On, the value of the
frequency tune displays the frequency of the incoming signal after
frequency offset set-off.
When Frequency drift Compensate is set to Off, the value of the
frequency tune displays the actual frequency.
NOTE
Displayed frequencies are L-Band frequencies.
• Frequency Offset - Displays the offset from the frequency as was set in
Configuration
Æ
Receiver
Æ
Frequency (see Paragraph 3.3.1.1).
When Frequency Drift Compensate is set to On, the frequency offset
displays the value 0.
When Frequency Drift Compensate is set to Off, frequency offset
displays the value of the offset from the tuned frequency in KHz.
• Viterbi Rate – When Viterbi rate mode is set to automatic (see
Paragraph 3.3.1.1), the value displayed is IRD selected. When Viterbi
rate is manually configured to specific rate, the value displayed is user
selected.
• Spectral Inversion – When the Spectral Inversion mode is set to
automatic (see Paragraph 3.3.1.1), the value displayed is IRD selected.
When you set the Spectral Inversion manually, the value displayed is
user–made selected.