Antenna Adjustment For Optimum Signal Quality (3> Adjust) - Promax SKYHUNTER Manual De Instrucciones

You may find that the instrument does not manage to initially determine any of the
three parameters and that it shows the message "MPEG-2 ...", to subsequently obtain
one of the previous parameters and alter the on-screen message.
If the instrument does not detect a signal with a valid transport stream, then the
'lock' message does not appear on the screen and it continues to show the name that
has been assigned to that satellite detection point (see figure 12).
Signal Quality
The IDENTIFY function also shows the information regarding the signal quality.
Now, when a signal with a valid transport stream is detected, the SKYHUNTER shows
'lock' on the display and proceeds to measure the BER. Once measured
(approximately 5 s later) the 'lock' indication changes to 'BER' if the BER is < 2x10E-4
(equivalent to good quality) or 'ber' if the BER is > 2x10E-4 (equivalent to poor quality).
This measurement will be repeated every 5 s.
The QPSK demodulator circuit tends to measure better as time passes due to the fact
that it includes an input signal tracking and adaptation algorithm. Therefore, to ensure a
correct signal quality reading, you are recommended to wait until a few measurements
have been taken.
4.2.3 Antenna Adjustment for Optimum Signal Quality (3> ADJUST)
Once the antenna has been positioned so that it receives maximum power and
checked that it is pointing to the right satellite, you should adjust the antenna so that it
produces optimum reception quality. Press button
function. This function measures the modulation error ratio MER at the digital
demodulator output and shows the measured value on the screen numerically (in dB).
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Figure 14.- IDENTIFY function screen.
USER'S MANUAL SKYHUNTER.
[3] to select the 3> ADJUST
07/2006