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www.TELE-satellite.com
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1 -12/2012 —
TELE-satellite International —
全球发行量最大的数字电视杂志
1)
The tuner configuration is accessed in the AZBox ME menu
2)
The AZBox uses an Availink AVL2108 tuner that is quite sensitive and is therefore
good for weaker signal situations.
3)
LNB 1 is configured in DiSEqC 1.2 mode for all satellite positions.
4)
Since the SG2100A doesn’t support USALS, this option is turned off. This function
isn’t even appropriate for our project since we will be using the stored tables of both
motors. The best thing would be to create a table that contains the stored motor position
for every satellite. The menu would be called here ‘Stored Position’.
5)
Next we will program LNB 2 for the dummy satellite ‘Switching Motor 1’ that won’t be
configured with DiSEqC 1.2 but rather with the Committed DiSEqC Command ‘AA’.
6)
For the dummy satellite ‘Switching Motor 2’ we are using LNB 3 with the Committed
DiSEqC Command ‘AB’.
7)
In the ‘Positioner Setup Menu’ we can now manually fine-tune the elevation of the
antenna as long as Motor 2 is active. Using our satellite table we know what motor
storage position the respective satellites must be stored to.
8)
Switching to channel 2: here Motor 2 was just activated!
9)
From HISPASAT 30.0W we turn our antenna back…
10)
Where we first switch to channel 1…
11)
And then select a channel on ASTRA 19.2E…
12)
After a few seconds, the antenna is now pointing to this satellite and a TV picture
appears.
13)
Now we switch to channel 2…
14)
Motor 2 is activated…
15)
And through the correction in elevation the signal level jumps from 17% to 46%!
16)
If, for example, you switch back to HISPASAT, the elevation changes since Motor 2 is
still active. The picture shows how the signal level dropped to 39%.
then moved into one of the Favorites
lists. Here they would need to occupy
position 1 and 2 in the list. Why?
Linux receivers have a peculiarity that
we can take advantage of: the channels
in the Favorites lists are numbered like
this! In other words, the first channel
in the Favorites list is channel 1 while
the second is channel 2. This makes it
very easy to switch between the two
motors; you simply select channel 1 or
2
on the remote control.
The arrow button on the remote con-
trol will take you to the previous chan-
nel so in the end you always need only
two button pushes to switch between
the two motors.
This entire process is only necessary
because the original receiver software
doesn’t include the capability to drive
two motors. But in this way, it actually
can be done!
Through the rough alignment based