Front-end lock: A “bulb” indicating front end lock when green, red indicates no lock
Level:
This is a measure of the stream signal power. It is expressed according
to the level mode selection made in the Setup — ETR view:
dBm: in decibels relative to a reference value of 1mW
dBμV: in decibels relative to a reference value of 1μV
dBmV: in decibels relative to a reference value of 1mV
BER (pre Viterbi):
The bit error rate before forward error correction (Viterbi) applies only to
DVB-S
BER (post Viterbi):
The bit error rate after forward error correction (Viterbi) applies only to
DVB-S
BER (post LDPC-BCH):
The bit error rate after forward error correction (LDPC-BCH) applies only
to DVB-S2
Packet error count:
The number of erroneous packets after FEC. Packet errors are due to
either packet loss or packet bit errors
Signal to noise ratio: Signal to noise ratio in dB
Modulation error rate: Modulation error rate in dB
Error Vector Magnitude: Error Vector Magnitude in %
Error Vector Magnitude: Error Vector Magnitude in dB
E
b
/N
0
: Energy per transmitted bit to noise power spectral density ratio in dB
E
binf
/N
0
: Energy per information bit to noise power spectral density ratio in dB
E
s
/N
0
: Energy per symbol to noise power spectral density ratio in dB
Transmission system: The modulation standard – may be DVB-S, DVB-S2.
Modulation:
The SAT modulation scheme – may be QPSK, 8PSK, 16APSK or 32APSK
Tuner bandwidth: The tuner bandwidth in MHz
Tuner frequency: The RF tuner frequency in GHz
Center frequency offset: The measured center frequency offset in kHz
Roll-off factor: The filter roll-off factor – one of the following: 0.2, 0.25, 0.35
Actual symbol rate: The actual SAT symbol rate in Msym/s
Symbol rate offset: The offset between defined and actual symbol rate in sym/s
FEC rate:
The forward error correction rate – may be 1/2, 2/3, 3/4, 4/5 (for Turbocode
only),5/6, 6/7 (for DSS only), 7/8 or 8/9 (for Turbocode only)
Spectrum inversion: Indicates whether the spectrum is inverted or normal
Num input streams:
Indicates whether the Single Input Stream (SIS) or Multiple Input Stream
(MIS) is used
Coding and modulation:
Indicates type of coding – one of the following: Constant Coding and
Modulation (CCM) or Adaptive Coding and Modulation (ACM) – VCM is
signaled as ACM.
ISSI: Shows if Input Stream Synchronization Indicator is Enabled or Disabled
Null packet deletion: Indicates if Null packet deletion (NPD) is Enabled or Disabled
208 VB2xx GigE User’s Manual version 5.4
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