Digital Mode - emitor Satlook Micro HD User Manual

Digital Mode

Locked
Not Locked
About Digital Mode
When the user enters Digital Mode, the Satlook G2 will attempt to receive a DVB-S
signal at the current frequency and the Satlook HD will also try to receive a DVB-S2
signal. The current frequency is displayed in the centre of the screen and can be
changed by the knob (within the limits of the current LNB type and the 22 kHz setting).
The state of the battery is displayed in the upper right corner of the screen.
When a signal is received, the Satlook G2 / HD is "locked" and the modulation mode is
displayed. This will be shown as QPSK , or with the Satlook HD, QPSK HD or 8PSK HD .
The current FEC and symbol rate are shown along with the LNB type definition being
used.
If the signal is locked, then the frequency displayed includes the frequency offset to the
signal centre frequency. Usually, the instruments will lock to a signal up to 5MHz offset.
When not locked, the frequency display contains no offset and an Automatic Search is
started in the direction given by the knob.
Four boxes are shown in the upper left to indicate the state of locking. For the Satlook
G2, from left to right these are: QPSK Lock, Descrambler Lock, Byte Align Lock, Viterbi
Lock. For the Satlook HD, from left to right these are: Tuner Mixer Lock, Tuner
DAC Lock, FEC Lock, Demod Lock.
In Automatic Search, the Satlook G2 / HD checks the signal power at each 3 MHz
interval and if the signal is a peak, it will attempt to lock using the current Modulation
settings defined in the Setup/Modulations screen (DVB-S, DVB-S2, DVB-S Low Symbol
rate). The Satlook G2 searches for QPSK signals. The search will stop when a signal is
locked. Turning the knob re-starts the search in the direction of the knob turn. For
Universal LNBs, if the frequency reaches 11900 MHz in low band, the 22kHz signal will
automatically switch on and the search continues in high band. When searching down,
when the frequency reaches 11520 MHz in high band, the 22kHz will automatically
switch off and the search continues down.
The Search will end when a signal is locked or the frequency limits are reached. Manual
Tuning can be entered using the Digital Menu and is active until the next press of the
menu knob. With the Satlook HD, in order to lock on signals when the signal symbol rate
is less than 15000 MSymbols/sec, the option "Low Symbol Rate" must be selected in the
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