emitor Satlook Micro G2 Manuel D'utilisation page 37

LNB: LNB: LNB: LNB: (Low Noise Block) The general name for the amplifier and downconverter at the
dish.
MaxHold: MaxHold: MaxHold: MaxHold: In the Analog Mode, this can be used to "remember" the highest peak of the
RF signal.
MER: MER: MER: MER: (Modulation Error ratio) This is usually expressed in dB. It is calculated from the
constellation pattern and represents how close the I and Q decision points are to the
ideal position. A typical MER value is 16 dB.
NIT: NIT: (Network Information Table) One of the System Information (SI) tables in DVB
NIT: NIT:
containing the current satellite name, position, and other data.
QPSK: QPSK: (Quadrature Phase Shift Keying) This is a digital modulation used for all DVB-S
QPSK: QPSK:
transmissions. The data is transmitted depending on the phase of the signal with 90
degrees the shift, so four states (one symbol) are encoded at each Symbol Frequency.
QPSK HD QPSK HD QPSK HD QPSK HD: : : : DVB-S2 transmissions can be broadcast in either 8PSK modulation or QPSK
modulation, When the demodulator receives a DVB-S2 transmission in QPSK, then QPSK
HD" is displayed.
RF: RF: RF: RF: (radio frequency) In the Satlook G2 / HD, this is a measurement of the total power in
the band from 950 MHz to 2150 MHz.
SIG: SIG: SIG: SIG: (Signal) In the Satlook G2 this is a measurement of the total power in the band from
950 MHz to 2150 MHz. In the Satlook HD, this is a measurement of the RF power at the
frequency shown on the display.
SNR: SNR: SNR: SNR: (Signal to Noise Ratio) The SNR of a Signal is a measure of the quality of the signal
in dB and higher SNR is better. Typical SNR readings for a clean signal will be greater
than 10.0 dB. This is a measurement from the demodulator and is only valid when the
received signal is locked.
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