AXING SZU 21-00 User Manual
Page 8
Operation Instructions SZU 21-00
Chapter 3: Operation
8
© AXING AG • Reserving change in design and type - We cannot be held liable for printing errors
2014-08-29
3. Please move now the Satellite dish antenna slowly until you clearly hear the buzzer noise. The SAT
Navi has logged-in and reckognized the wanted Satellite. The following other informations are
displayed now too:
P:
Signal Strength (in dBµV)
BER:
Bit Error Rate
Q:
Signal Quality (Bar Graph)
With this Information and the acoustic signal, you can fine-tune the antenna to the optimal position.
The frequency of the acoustic signal is linked to the signal quality. So you can search the satellite and
fine-tune the position also without seeing the display of the Sat Navigator.
To exit the Satellite Navigator function, just press OK.
3.2.1
BER – bit error rate
The BER (bit error rate) indicates the system reserves of a Satellite dish unit. The BER value should be
as high as possible.
1.0 e-8...e-7
1.0 e-6...e-4
1.0 e-3...e-1
2.0 e-4
The lowest BER-limit value lies at 2.00e-04, in order to achieve an error-free signal. However with this
a.m. limit-value the system does not have any more reserves and should therefore lie well above this
min. level.
3.2.2
Signal level
46 dBµV
78 dBµV
47...50 dBµV
75...77 dBµV
51...74 dBµV
The signal level must neither be too low, nor too high.
3.2.3
Short Circuit Protection
If there is a short circuit on the LNB input, the LNB power will be cut off and there will be the message
“Short c. detected” in the display.
After you have removed the cause for the short circuit, it appears the message “Short c. restored” and the
LNB Power is switched on again.
3.3
Activating the DiSEqC control
If necessary, the respective LNB can be activated via DiSEqC.
Fig. 9: Signal
Abb. 10: bit error rate
Abb. 11: Signal level measured at
an antenna wall outlet
Fig. 12: Calling up the DiSEqC
menu
good acceptable bad
bad bad
good acceptable
acceptable